./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:13:32,921 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:13:32,989 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-16 23:13:33,004 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:13:33,005 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:13:33,038 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:13:33,039 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:13:33,039 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:13:33,040 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:13:33,040 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:13:33,041 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:13:33,041 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:13:33,041 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:13:33,041 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:13:33,042 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:13:33,042 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:13:33,042 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:13:33,042 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:13:33,043 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:13:33,043 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:13:33,043 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:13:33,044 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:13:33,044 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-16 23:13:33,044 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:13:33,044 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-16 23:13:33,045 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:13:33,045 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:13:33,045 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:13:33,045 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:13:33,046 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:13:33,046 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:13:33,046 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:33,051 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:13:33,051 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:13:33,052 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:13:33,052 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c885fc256284ed3b5456c69b30daa307e14001acfa6c144983451f9519cbd1fd [2024-11-16 23:13:33,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:13:33,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:13:33,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:13:33,344 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:13:33,344 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:13:33,345 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-16 23:13:34,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:13:34,878 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:13:34,878 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-race.i [2024-11-16 23:13:34,890 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edc303b1/4c89f81be7cc4c009938c78f4cf2305a/FLAG4dc1ef849 [2024-11-16 23:13:34,901 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5edc303b1/4c89f81be7cc4c009938c78f4cf2305a [2024-11-16 23:13:34,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:13:34,905 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:13:34,907 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:34,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:13:34,912 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:13:34,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:34" (1/1) ... [2024-11-16 23:13:34,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f94f3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:34, skipping insertion in model container [2024-11-16 23:13:34,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:34" (1/1) ... [2024-11-16 23:13:34,953 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:13:35,280 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:35,297 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:13:35,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:35,378 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:13:35,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35 WrapperNode [2024-11-16 23:13:35,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:35,380 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:35,380 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:13:35,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:13:35,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,405 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,431 INFO L138 Inliner]: procedures = 164, calls = 27, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 108 [2024-11-16 23:13:35,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:35,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:13:35,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:13:35,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:13:35,440 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,446 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,456 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,456 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,462 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,462 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:13:35,469 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:13:35,469 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:13:35,469 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:13:35,470 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:35,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:35,546 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:13:35,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:13:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-16 23:13:35,619 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-16 23:13:35,619 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 23:13:35,623 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:13:35,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:13:35,625 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 23:13:35,746 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:13:35,749 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:13:35,979 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 23:13:35,980 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:13:36,002 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:13:36,002 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 23:13:36,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:36 BoogieIcfgContainer [2024-11-16 23:13:36,003 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:13:36,004 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:13:36,004 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:13:36,008 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:13:36,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:13:34" (1/3) ... [2024-11-16 23:13:36,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29720d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:36, skipping insertion in model container [2024-11-16 23:13:36,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (2/3) ... [2024-11-16 23:13:36,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29720d0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:36, skipping insertion in model container [2024-11-16 23:13:36,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:36" (3/3) ... [2024-11-16 23:13:36,011 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-race.i [2024-11-16 23:13:36,025 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:13:36,026 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-16 23:13:36,026 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 23:13:36,102 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:36,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 129 transitions, 262 flow [2024-11-16 23:13:36,184 INFO L124 PetriNetUnfolderBase]: 12/139 cut-off events. [2024-11-16 23:13:36,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:36,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 139 events. 12/139 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 198 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-11-16 23:13:36,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 129 transitions, 262 flow [2024-11-16 23:13:36,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 129 transitions, 262 flow [2024-11-16 23:13:36,200 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:36,205 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;@6fa00c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:36,206 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-16 23:13:36,216 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:36,216 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:36,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:36,216 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:36,217 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] [2024-11-16 23:13:36,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:36,222 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:36,222 INFO L85 PathProgramCache]: Analyzing trace with hash 296857979, now seen corresponding path program 1 times [2024-11-16 23:13:36,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:36,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068634283] [2024-11-16 23:13:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:36,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:36,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068634283] [2024-11-16 23:13:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068634283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:36,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:36,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:36,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544420702] [2024-11-16 23:13:36,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:36,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:36,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:36,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:37,100 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2024-11-16 23:13:37,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 129 transitions, 262 flow. Second operand has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:37,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2024-11-16 23:13:37,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:37,164 INFO L124 PetriNetUnfolderBase]: 5/121 cut-off events. [2024-11-16 23:13:37,164 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 23:13:37,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 121 events. 5/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 136 event pairs, 0 based on Foata normal form. 21/131 useless extension candidates. Maximal degree in co-relation 78. Up to 14 conditions per place. [2024-11-16 23:13:37,166 INFO L140 encePairwiseOnDemand]: 116/129 looper letters, 13 selfloop transitions, 5 changer transitions 0/116 dead transitions. [2024-11-16 23:13:37,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 116 transitions, 272 flow [2024-11-16 23:13:37,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:37,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:37,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 632 transitions. [2024-11-16 23:13:37,183 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8165374677002584 [2024-11-16 23:13:37,185 INFO L175 Difference]: Start difference. First operand has 121 places, 129 transitions, 262 flow. Second operand 6 states and 632 transitions. [2024-11-16 23:13:37,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 116 transitions, 272 flow [2024-11-16 23:13:37,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 116 transitions, 272 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:37,196 INFO L231 Difference]: Finished difference. Result has 119 places, 116 transitions, 246 flow [2024-11-16 23:13:37,198 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=119, PETRI_TRANSITIONS=116} [2024-11-16 23:13:37,202 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -2 predicate places. [2024-11-16 23:13:37,203 INFO L471 AbstractCegarLoop]: Abstraction has has 119 places, 116 transitions, 246 flow [2024-11-16 23:13:37,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:37,203 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:37,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:13:37,204 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:37,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:37,204 INFO L85 PathProgramCache]: Analyzing trace with hash -837726804, now seen corresponding path program 1 times [2024-11-16 23:13:37,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:37,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621448683] [2024-11-16 23:13:37,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:37,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:37,287 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:37,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:37,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621448683] [2024-11-16 23:13:37,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621448683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:37,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:37,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:37,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131367450] [2024-11-16 23:13:37,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:37,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:37,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:37,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:37,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:37,374 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 129 [2024-11-16 23:13:37,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 116 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:37,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 129 [2024-11-16 23:13:37,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:37,421 INFO L124 PetriNetUnfolderBase]: 5/134 cut-off events. [2024-11-16 23:13:37,425 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-16 23:13:37,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 134 events. 5/134 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 130 event pairs, 0 based on Foata normal form. 1/125 useless extension candidates. Maximal degree in co-relation 96. Up to 9 conditions per place. [2024-11-16 23:13:37,426 INFO L140 encePairwiseOnDemand]: 126/129 looper letters, 7 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2024-11-16 23:13:37,426 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 117 transitions, 268 flow [2024-11-16 23:13:37,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:37,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:37,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 346 transitions. [2024-11-16 23:13:37,428 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8940568475452196 [2024-11-16 23:13:37,428 INFO L175 Difference]: Start difference. First operand has 119 places, 116 transitions, 246 flow. Second operand 3 states and 346 transitions. [2024-11-16 23:13:37,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 117 transitions, 268 flow [2024-11-16 23:13:37,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 117 transitions, 256 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:37,435 INFO L231 Difference]: Finished difference. Result has 117 places, 117 transitions, 248 flow [2024-11-16 23:13:37,436 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=117, PETRI_TRANSITIONS=117} [2024-11-16 23:13:37,437 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, -4 predicate places. [2024-11-16 23:13:37,440 INFO L471 AbstractCegarLoop]: Abstraction has has 117 places, 117 transitions, 248 flow [2024-11-16 23:13:37,441 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,441 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:37,441 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:37,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:13:37,442 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:37,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:37,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1329128756, now seen corresponding path program 1 times [2024-11-16 23:13:37,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:37,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868365906] [2024-11-16 23:13:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:37,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:37,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:37,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868365906] [2024-11-16 23:13:37,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868365906] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:37,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774421176] [2024-11-16 23:13:37,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:37,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:37,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:37,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:37,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 23:13:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:37,708 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:37,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:37,788 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:37,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:37,845 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:37,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774421176] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:37,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:37,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:37,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340559112] [2024-11-16 23:13:37,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:37,847 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:37,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:37,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:37,940 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2024-11-16 23:13:37,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 117 transitions, 248 flow. Second operand has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:37,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2024-11-16 23:13:37,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:38,023 INFO L124 PetriNetUnfolderBase]: 5/151 cut-off events. [2024-11-16 23:13:38,024 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 23:13:38,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 151 events. 5/151 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 0 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 133. Up to 9 conditions per place. [2024-11-16 23:13:38,025 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 11 selfloop transitions, 9 changer transitions 0/125 dead transitions. [2024-11-16 23:13:38,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 125 transitions, 306 flow [2024-11-16 23:13:38,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:38,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:38,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1003 transitions. [2024-11-16 23:13:38,027 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8639104220499569 [2024-11-16 23:13:38,027 INFO L175 Difference]: Start difference. First operand has 117 places, 117 transitions, 248 flow. Second operand 9 states and 1003 transitions. [2024-11-16 23:13:38,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 125 transitions, 306 flow [2024-11-16 23:13:38,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 125 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:38,031 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 296 flow [2024-11-16 23:13:38,032 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=296, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-11-16 23:13:38,033 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 6 predicate places. [2024-11-16 23:13:38,033 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 296 flow [2024-11-16 23:13:38,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 110.9) internal successors, (1109), 10 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:38,034 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:38,034 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:38,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 23:13:38,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:38,237 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:38,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:38,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1217639156, now seen corresponding path program 2 times [2024-11-16 23:13:38,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:38,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603453298] [2024-11-16 23:13:38,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:38,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:38,403 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:38,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603453298] [2024-11-16 23:13:38,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603453298] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:38,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [193829880] [2024-11-16 23:13:38,404 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:38,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:38,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:38,407 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:38,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 23:13:38,501 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:38,502 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:38,503 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:38,506 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:38,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:38,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [193829880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:38,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:38,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:38,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956657791] [2024-11-16 23:13:38,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:38,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:38,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:38,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:38,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:38,829 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2024-11-16 23:13:38,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 296 flow. Second operand has 15 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:38,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:38,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2024-11-16 23:13:38,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:38,997 INFO L124 PetriNetUnfolderBase]: 5/193 cut-off events. [2024-11-16 23:13:38,997 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-16 23:13:38,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280 conditions, 193 events. 5/193 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 106 event pairs, 0 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 194. Up to 9 conditions per place. [2024-11-16 23:13:38,998 INFO L140 encePairwiseOnDemand]: 123/129 looper letters, 14 selfloop transitions, 18 changer transitions 0/137 dead transitions. [2024-11-16 23:13:38,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 434 flow [2024-11-16 23:13:38,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:39,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1997 transitions. [2024-11-16 23:13:39,002 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8600344530577089 [2024-11-16 23:13:39,002 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 296 flow. Second operand 18 states and 1997 transitions. [2024-11-16 23:13:39,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 434 flow [2024-11-16 23:13:39,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 137 transitions, 422 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:39,006 INFO L231 Difference]: Finished difference. Result has 147 places, 133 transitions, 396 flow [2024-11-16 23:13:39,006 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=396, PETRI_PLACES=147, PETRI_TRANSITIONS=133} [2024-11-16 23:13:39,007 INFO L277 CegarLoopForPetriNet]: 121 programPoint places, 26 predicate places. [2024-11-16 23:13:39,007 INFO L471 AbstractCegarLoop]: Abstraction has has 147 places, 133 transitions, 396 flow [2024-11-16 23:13:39,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 111.06666666666666) internal successors, (1666), 15 states have internal predecessors, (1666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:39,009 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:39,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 23:13:39,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 23:13:39,214 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2024-11-16 23:13:39,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:39,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1981944940, now seen corresponding path program 3 times [2024-11-16 23:13:39,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:39,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57945513] [2024-11-16 23:13:39,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:39,255 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:39,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:39,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:39,298 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:39,299 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-16 23:13:39,300 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-16 23:13:39,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-16 23:13:39,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-16 23:13:39,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-16 23:13:39,301 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-16 23:13:39,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-16 23:13:39,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-16 23:13:39,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-16 23:13:39,302 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-16 23:13:39,302 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:13:39,302 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:39,305 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:39,305 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 23:13:39,345 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:39,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 187 places, 201 transitions, 412 flow [2024-11-16 23:13:39,362 INFO L124 PetriNetUnfolderBase]: 21/223 cut-off events. [2024-11-16 23:13:39,363 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 23:13:39,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 223 events. 21/223 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 516 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2024-11-16 23:13:39,365 INFO L82 GeneralOperation]: Start removeDead. Operand has 187 places, 201 transitions, 412 flow [2024-11-16 23:13:39,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 201 transitions, 412 flow [2024-11-16 23:13:39,367 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:39,368 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;@6fa00c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:39,368 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-16 23:13:39,371 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:39,371 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:39,371 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:39,371 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:39,371 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] [2024-11-16 23:13:39,372 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:39,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:39,372 INFO L85 PathProgramCache]: Analyzing trace with hash 358804923, now seen corresponding path program 1 times [2024-11-16 23:13:39,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:39,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066826666] [2024-11-16 23:13:39,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:39,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:39,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:39,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066826666] [2024-11-16 23:13:39,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066826666] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:39,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:39,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:39,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088420988] [2024-11-16 23:13:39,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:39,537 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:39,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:39,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:39,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:39,653 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 201 [2024-11-16 23:13:39,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 201 transitions, 412 flow. Second operand has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:39,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 201 [2024-11-16 23:13:39,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:39,760 INFO L124 PetriNetUnfolderBase]: 90/625 cut-off events. [2024-11-16 23:13:39,760 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2024-11-16 23:13:39,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 781 conditions, 625 events. 90/625 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3506 event pairs, 42 based on Foata normal form. 179/708 useless extension candidates. Maximal degree in co-relation 322. Up to 125 conditions per place. [2024-11-16 23:13:39,766 INFO L140 encePairwiseOnDemand]: 184/201 looper letters, 20 selfloop transitions, 5 changer transitions 0/182 dead transitions. [2024-11-16 23:13:39,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 182 transitions, 424 flow [2024-11-16 23:13:39,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1003 transitions. [2024-11-16 23:13:39,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8316749585406302 [2024-11-16 23:13:39,768 INFO L175 Difference]: Start difference. First operand has 187 places, 201 transitions, 412 flow. Second operand 6 states and 1003 transitions. [2024-11-16 23:13:39,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 182 transitions, 424 flow [2024-11-16 23:13:39,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 182 transitions, 424 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:39,786 INFO L231 Difference]: Finished difference. Result has 183 places, 182 transitions, 384 flow [2024-11-16 23:13:39,787 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=384, PETRI_PLACES=183, PETRI_TRANSITIONS=182} [2024-11-16 23:13:39,788 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, -4 predicate places. [2024-11-16 23:13:39,788 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 182 transitions, 384 flow [2024-11-16 23:13:39,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 162.5) internal successors, (975), 6 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,789 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:39,789 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:39,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:13:39,789 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:39,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 862013545, now seen corresponding path program 1 times [2024-11-16 23:13:39,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:39,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246602540] [2024-11-16 23:13:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:39,812 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:39,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:39,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246602540] [2024-11-16 23:13:39,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246602540] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:39,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:39,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:39,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689235002] [2024-11-16 23:13:39,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:39,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:39,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:39,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:39,828 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 176 out of 201 [2024-11-16 23:13:39,829 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 182 transitions, 384 flow. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,829 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:39,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 176 of 201 [2024-11-16 23:13:39,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:39,869 INFO L124 PetriNetUnfolderBase]: 23/361 cut-off events. [2024-11-16 23:13:39,870 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-11-16 23:13:39,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 361 events. 23/361 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1198 event pairs, 6 based on Foata normal form. 1/321 useless extension candidates. Maximal degree in co-relation 347. Up to 24 conditions per place. [2024-11-16 23:13:39,873 INFO L140 encePairwiseOnDemand]: 198/201 looper letters, 10 selfloop transitions, 2 changer transitions 0/183 dead transitions. [2024-11-16 23:13:39,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 183 transitions, 412 flow [2024-11-16 23:13:39,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:39,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:39,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2024-11-16 23:13:39,875 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8971807628524047 [2024-11-16 23:13:39,875 INFO L175 Difference]: Start difference. First operand has 183 places, 182 transitions, 384 flow. Second operand 3 states and 541 transitions. [2024-11-16 23:13:39,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 183 transitions, 412 flow [2024-11-16 23:13:39,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 183 transitions, 400 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:39,877 INFO L231 Difference]: Finished difference. Result has 181 places, 183 transitions, 386 flow [2024-11-16 23:13:39,878 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=181, PETRI_TRANSITIONS=183} [2024-11-16 23:13:39,878 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, -6 predicate places. [2024-11-16 23:13:39,878 INFO L471 AbstractCegarLoop]: Abstraction has has 181 places, 183 transitions, 386 flow [2024-11-16 23:13:39,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 3 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,879 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:39,879 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:39,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:13:39,879 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:39,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:39,880 INFO L85 PathProgramCache]: Analyzing trace with hash -87137879, now seen corresponding path program 1 times [2024-11-16 23:13:39,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:39,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435903462] [2024-11-16 23:13:39,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:39,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:39,937 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435903462] [2024-11-16 23:13:39,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435903462] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:39,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294970875] [2024-11-16 23:13:39,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:39,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:39,939 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:39,940 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:39,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 23:13:40,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:40,016 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:40,018 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:40,053 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:40,054 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:40,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294970875] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:40,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:40,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906926468] [2024-11-16 23:13:40,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:40,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:40,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:40,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:40,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:40,191 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 201 [2024-11-16 23:13:40,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 183 transitions, 386 flow. Second operand has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:40,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 201 [2024-11-16 23:13:40,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:40,272 INFO L124 PetriNetUnfolderBase]: 23/378 cut-off events. [2024-11-16 23:13:40,272 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2024-11-16 23:13:40,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 378 events. 23/378 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1174 event pairs, 6 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 384. Up to 24 conditions per place. [2024-11-16 23:13:40,274 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 14 selfloop transitions, 9 changer transitions 0/191 dead transitions. [2024-11-16 23:13:40,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 191 transitions, 450 flow [2024-11-16 23:13:40,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:40,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:40,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1582 transitions. [2024-11-16 23:13:40,278 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8745163073521283 [2024-11-16 23:13:40,278 INFO L175 Difference]: Start difference. First operand has 181 places, 183 transitions, 386 flow. Second operand 9 states and 1582 transitions. [2024-11-16 23:13:40,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 191 transitions, 450 flow [2024-11-16 23:13:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 448 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:40,281 INFO L231 Difference]: Finished difference. Result has 191 places, 189 transitions, 434 flow [2024-11-16 23:13:40,281 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=183, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=191, PETRI_TRANSITIONS=189} [2024-11-16 23:13:40,282 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, 4 predicate places. [2024-11-16 23:13:40,282 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 189 transitions, 434 flow [2024-11-16 23:13:40,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 175.0) internal successors, (1750), 10 states have internal predecessors, (1750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,283 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:40,283 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:40,299 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 23:13:40,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:40,485 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:40,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:40,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1458373673, now seen corresponding path program 2 times [2024-11-16 23:13:40,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:40,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880796796] [2024-11-16 23:13:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:40,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:40,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:40,622 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:40,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880796796] [2024-11-16 23:13:40,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880796796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:40,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047951165] [2024-11-16 23:13:40,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:40,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:40,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:40,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:40,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 23:13:40,703 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:40,703 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:40,704 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:40,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:40,815 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:40,815 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:40,928 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-16 23:13:40,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047951165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:40,929 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:40,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:40,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802484326] [2024-11-16 23:13:40,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:40,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:40,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:40,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:40,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:41,027 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 173 out of 201 [2024-11-16 23:13:41,029 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 189 transitions, 434 flow. Second operand has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:41,029 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:41,029 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 173 of 201 [2024-11-16 23:13:41,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:41,187 INFO L124 PetriNetUnfolderBase]: 23/420 cut-off events. [2024-11-16 23:13:41,188 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2024-11-16 23:13:41,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 420 events. 23/420 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1177 event pairs, 6 based on Foata normal form. 3/382 useless extension candidates. Maximal degree in co-relation 344. Up to 24 conditions per place. [2024-11-16 23:13:41,190 INFO L140 encePairwiseOnDemand]: 195/201 looper letters, 17 selfloop transitions, 18 changer transitions 0/203 dead transitions. [2024-11-16 23:13:41,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 203 transitions, 578 flow [2024-11-16 23:13:41,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3152 transitions. [2024-11-16 23:13:41,197 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.871199557766722 [2024-11-16 23:13:41,198 INFO L175 Difference]: Start difference. First operand has 191 places, 189 transitions, 434 flow. Second operand 18 states and 3152 transitions. [2024-11-16 23:13:41,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 203 transitions, 578 flow [2024-11-16 23:13:41,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 203 transitions, 566 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:41,201 INFO L231 Difference]: Finished difference. Result has 211 places, 199 transitions, 534 flow [2024-11-16 23:13:41,201 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=201, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=534, PETRI_PLACES=211, PETRI_TRANSITIONS=199} [2024-11-16 23:13:41,202 INFO L277 CegarLoopForPetriNet]: 187 programPoint places, 24 predicate places. [2024-11-16 23:13:41,202 INFO L471 AbstractCegarLoop]: Abstraction has has 211 places, 199 transitions, 534 flow [2024-11-16 23:13:41,203 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 175.13333333333333) internal successors, (2627), 15 states have internal predecessors, (2627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:41,203 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:41,204 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:41,221 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 23:13:41,404 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:41,404 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 10 more)] === [2024-11-16 23:13:41,405 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:41,405 INFO L85 PathProgramCache]: Analyzing trace with hash -1716383767, now seen corresponding path program 3 times [2024-11-16 23:13:41,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:41,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744151457] [2024-11-16 23:13:41,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:41,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:41,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:41,465 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:41,466 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-16 23:13:41,466 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-16 23:13:41,467 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-16 23:13:41,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:13:41,468 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:41,468 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:41,468 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 23:13:41,500 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:41,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 253 places, 273 transitions, 564 flow [2024-11-16 23:13:41,544 INFO L124 PetriNetUnfolderBase]: 30/307 cut-off events. [2024-11-16 23:13:41,545 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-16 23:13:41,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 320 conditions, 307 events. 30/307 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 921 event pairs, 0 based on Foata normal form. 0/260 useless extension candidates. Maximal degree in co-relation 227. Up to 8 conditions per place. [2024-11-16 23:13:41,547 INFO L82 GeneralOperation]: Start removeDead. Operand has 253 places, 273 transitions, 564 flow [2024-11-16 23:13:41,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 253 places, 273 transitions, 564 flow [2024-11-16 23:13:41,551 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:41,551 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;@6fa00c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:41,551 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-16 23:13:41,555 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:41,555 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:41,555 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:41,555 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:41,555 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] [2024-11-16 23:13:41,556 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:41,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:41,556 INFO L85 PathProgramCache]: Analyzing trace with hash 1212189691, now seen corresponding path program 1 times [2024-11-16 23:13:41,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:41,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453165761] [2024-11-16 23:13:41,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:41,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:41,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:41,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:41,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:41,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453165761] [2024-11-16 23:13:41,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453165761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:41,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:41,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:41,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882934556] [2024-11-16 23:13:41,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:41,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:41,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:41,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:41,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:41,846 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 273 [2024-11-16 23:13:41,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 273 transitions, 564 flow. Second operand has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:41,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:41,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 273 [2024-11-16 23:13:41,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:42,376 INFO L124 PetriNetUnfolderBase]: 1081/4272 cut-off events. [2024-11-16 23:13:42,376 INFO L125 PetriNetUnfolderBase]: For 364/364 co-relation queries the response was YES. [2024-11-16 23:13:42,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5818 conditions, 4272 events. 1081/4272 cut-off events. For 364/364 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 40683 event pairs, 630 based on Foata normal form. 1516/5001 useless extension candidates. Maximal degree in co-relation 1508. Up to 1318 conditions per place. [2024-11-16 23:13:42,407 INFO L140 encePairwiseOnDemand]: 252/273 looper letters, 27 selfloop transitions, 5 changer transitions 0/248 dead transitions. [2024-11-16 23:13:42,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 248 transitions, 578 flow [2024-11-16 23:13:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1374 transitions. [2024-11-16 23:13:42,412 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8388278388278388 [2024-11-16 23:13:42,412 INFO L175 Difference]: Start difference. First operand has 253 places, 273 transitions, 564 flow. Second operand 6 states and 1374 transitions. [2024-11-16 23:13:42,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 248 transitions, 578 flow [2024-11-16 23:13:42,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 248 transitions, 576 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:42,419 INFO L231 Difference]: Finished difference. Result has 247 places, 248 transitions, 522 flow [2024-11-16 23:13:42,419 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=522, PETRI_PLACES=247, PETRI_TRANSITIONS=248} [2024-11-16 23:13:42,420 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -6 predicate places. [2024-11-16 23:13:42,420 INFO L471 AbstractCegarLoop]: Abstraction has has 247 places, 248 transitions, 522 flow [2024-11-16 23:13:42,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 222.5) internal successors, (1335), 6 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,422 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:42,422 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:42,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 23:13:42,422 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:42,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:42,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1811362819, now seen corresponding path program 1 times [2024-11-16 23:13:42,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:42,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437876929] [2024-11-16 23:13:42,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:42,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:42,443 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:42,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:42,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437876929] [2024-11-16 23:13:42,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437876929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:42,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:42,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:42,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544507689] [2024-11-16 23:13:42,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:42,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:42,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:42,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:42,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:42,468 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 240 out of 273 [2024-11-16 23:13:42,469 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 248 transitions, 522 flow. Second operand has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,469 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:42,469 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 240 of 273 [2024-11-16 23:13:42,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:42,585 INFO L124 PetriNetUnfolderBase]: 95/1060 cut-off events. [2024-11-16 23:13:42,585 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-11-16 23:13:42,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1201 conditions, 1060 events. 95/1060 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6412 event pairs, 42 based on Foata normal form. 1/926 useless extension candidates. Maximal degree in co-relation 1136. Up to 87 conditions per place. [2024-11-16 23:13:42,599 INFO L140 encePairwiseOnDemand]: 270/273 looper letters, 13 selfloop transitions, 2 changer transitions 0/249 dead transitions. [2024-11-16 23:13:42,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 249 transitions, 556 flow [2024-11-16 23:13:42,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 736 transitions. [2024-11-16 23:13:42,601 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8986568986568987 [2024-11-16 23:13:42,601 INFO L175 Difference]: Start difference. First operand has 247 places, 248 transitions, 522 flow. Second operand 3 states and 736 transitions. [2024-11-16 23:13:42,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 249 transitions, 556 flow [2024-11-16 23:13:42,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 249 transitions, 544 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:42,604 INFO L231 Difference]: Finished difference. Result has 245 places, 249 transitions, 524 flow [2024-11-16 23:13:42,605 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=512, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=524, PETRI_PLACES=245, PETRI_TRANSITIONS=249} [2024-11-16 23:13:42,605 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, -8 predicate places. [2024-11-16 23:13:42,606 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 249 transitions, 524 flow [2024-11-16 23:13:42,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 242.33333333333334) internal successors, (727), 3 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,606 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:42,606 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:42,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 23:13:42,606 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:42,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash -21982627, now seen corresponding path program 1 times [2024-11-16 23:13:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577861195] [2024-11-16 23:13:42,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:42,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:42,693 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:42,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577861195] [2024-11-16 23:13:42,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577861195] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:42,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495152017] [2024-11-16 23:13:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:42,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:42,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:42,695 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:42,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-16 23:13:42,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:42,769 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:42,770 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:42,796 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:42,835 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:42,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [495152017] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:42,835 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:42,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:42,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467722887] [2024-11-16 23:13:42,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:42,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:42,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:42,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:42,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:42,894 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 273 [2024-11-16 23:13:42,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 249 transitions, 524 flow. Second operand has 10 states, 10 states have (on average 239.1) internal successors, (2391), 10 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:42,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:42,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 273 [2024-11-16 23:13:42,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:43,049 INFO L124 PetriNetUnfolderBase]: 95/1077 cut-off events. [2024-11-16 23:13:43,049 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2024-11-16 23:13:43,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1226 conditions, 1077 events. 95/1077 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6386 event pairs, 42 based on Foata normal form. 2/944 useless extension candidates. Maximal degree in co-relation 1173. Up to 87 conditions per place. [2024-11-16 23:13:43,059 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 17 selfloop transitions, 9 changer transitions 0/257 dead transitions. [2024-11-16 23:13:43,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 257 transitions, 594 flow [2024-11-16 23:13:43,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:43,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:43,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2161 transitions. [2024-11-16 23:13:43,064 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8795278795278795 [2024-11-16 23:13:43,064 INFO L175 Difference]: Start difference. First operand has 245 places, 249 transitions, 524 flow. Second operand 9 states and 2161 transitions. [2024-11-16 23:13:43,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 257 transitions, 594 flow [2024-11-16 23:13:43,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 257 transitions, 592 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:43,068 INFO L231 Difference]: Finished difference. Result has 255 places, 255 transitions, 572 flow [2024-11-16 23:13:43,069 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=572, PETRI_PLACES=255, PETRI_TRANSITIONS=255} [2024-11-16 23:13:43,069 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 2 predicate places. [2024-11-16 23:13:43,069 INFO L471 AbstractCegarLoop]: Abstraction has has 255 places, 255 transitions, 572 flow [2024-11-16 23:13:43,070 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 239.1) internal successors, (2391), 10 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,070 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:43,070 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:43,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 23:13:43,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-16 23:13:43,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:43,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:43,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1650861853, now seen corresponding path program 2 times [2024-11-16 23:13:43,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:43,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211385625] [2024-11-16 23:13:43,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:43,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:43,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:43,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211385625] [2024-11-16 23:13:43,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211385625] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:43,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158223920] [2024-11-16 23:13:43,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:43,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:43,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:43,413 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:43,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-16 23:13:43,519 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 23:13:43,519 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:43,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:43,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:43,592 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:43,695 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-16 23:13:43,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158223920] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:43,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:43,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:43,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619325469] [2024-11-16 23:13:43,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:43,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:43,785 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 273 [2024-11-16 23:13:43,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 255 transitions, 572 flow. Second operand has 15 states, 15 states have (on average 239.2) internal successors, (3588), 15 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:43,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 273 [2024-11-16 23:13:43,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:44,104 INFO L124 PetriNetUnfolderBase]: 95/1119 cut-off events. [2024-11-16 23:13:44,104 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2024-11-16 23:13:44,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1322 conditions, 1119 events. 95/1119 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6386 event pairs, 42 based on Foata normal form. 3/987 useless extension candidates. Maximal degree in co-relation 1133. Up to 87 conditions per place. [2024-11-16 23:13:44,115 INFO L140 encePairwiseOnDemand]: 267/273 looper letters, 20 selfloop transitions, 18 changer transitions 0/269 dead transitions. [2024-11-16 23:13:44,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 269 transitions, 722 flow [2024-11-16 23:13:44,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:44,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:44,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4307 transitions. [2024-11-16 23:13:44,123 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8764753764753764 [2024-11-16 23:13:44,123 INFO L175 Difference]: Start difference. First operand has 255 places, 255 transitions, 572 flow. Second operand 18 states and 4307 transitions. [2024-11-16 23:13:44,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 269 transitions, 722 flow [2024-11-16 23:13:44,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 269 transitions, 710 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:44,128 INFO L231 Difference]: Finished difference. Result has 275 places, 265 transitions, 672 flow [2024-11-16 23:13:44,128 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=672, PETRI_PLACES=275, PETRI_TRANSITIONS=265} [2024-11-16 23:13:44,129 INFO L277 CegarLoopForPetriNet]: 253 programPoint places, 22 predicate places. [2024-11-16 23:13:44,129 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 265 transitions, 672 flow [2024-11-16 23:13:44,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 239.2) internal successors, (3588), 15 states have internal predecessors, (3588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:44,130 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:44,131 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:44,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-16 23:13:44,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:44,332 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2024-11-16 23:13:44,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:44,333 INFO L85 PathProgramCache]: Analyzing trace with hash -686843331, now seen corresponding path program 3 times [2024-11-16 23:13:44,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:44,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734037571] [2024-11-16 23:13:44,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:44,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:44,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:44,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:44,402 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:44,403 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-16 23:13:44,404 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-16 23:13:44,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-16 23:13:44,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-16 23:13:44,405 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-16 23:13:44,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-16 23:13:44,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-16 23:13:44,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-16 23:13:44,406 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-16 23:13:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-16 23:13:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-16 23:13:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-16 23:13:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-16 23:13:44,407 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-16 23:13:44,407 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 23:13:44,408 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 23:13:44,408 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:44,408 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-16 23:13:44,447 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:44,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 345 transitions, 718 flow [2024-11-16 23:13:44,494 INFO L124 PetriNetUnfolderBase]: 39/391 cut-off events. [2024-11-16 23:13:44,495 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-16 23:13:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410 conditions, 391 events. 39/391 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1343 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 315. Up to 10 conditions per place. [2024-11-16 23:13:44,500 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 345 transitions, 718 flow [2024-11-16 23:13:44,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 319 places, 345 transitions, 718 flow [2024-11-16 23:13:44,504 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:44,505 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;@6fa00c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:44,505 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-16 23:13:44,507 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:44,507 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:44,508 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:44,508 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:44,508 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] [2024-11-16 23:13:44,508 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:44,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:44,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1437955013, now seen corresponding path program 1 times [2024-11-16 23:13:44,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:44,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859712628] [2024-11-16 23:13:44,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:44,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:44,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:44,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:44,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859712628] [2024-11-16 23:13:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859712628] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:44,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459039296] [2024-11-16 23:13:44,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:44,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:44,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:44,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:44,860 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 345 [2024-11-16 23:13:44,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 345 transitions, 718 flow. Second operand has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:44,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:44,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 345 [2024-11-16 23:13:44,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:49,741 INFO L124 PetriNetUnfolderBase]: 10790/32017 cut-off events. [2024-11-16 23:13:49,742 INFO L125 PetriNetUnfolderBase]: For 4202/4202 co-relation queries the response was YES. [2024-11-16 23:13:49,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46446 conditions, 32017 events. 10790/32017 cut-off events. For 4202/4202 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 398691 event pairs, 6804 based on Foata normal form. 12467/38160 useless extension candidates. Maximal degree in co-relation 5819. Up to 12485 conditions per place. [2024-11-16 23:13:50,329 INFO L140 encePairwiseOnDemand]: 320/345 looper letters, 34 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2024-11-16 23:13:50,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 314 transitions, 734 flow [2024-11-16 23:13:50,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:50,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:50,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1745 transitions. [2024-11-16 23:13:50,334 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8429951690821256 [2024-11-16 23:13:50,334 INFO L175 Difference]: Start difference. First operand has 319 places, 345 transitions, 718 flow. Second operand 6 states and 1745 transitions. [2024-11-16 23:13:50,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 314 transitions, 734 flow [2024-11-16 23:13:50,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 314 transitions, 728 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:50,340 INFO L231 Difference]: Finished difference. Result has 311 places, 314 transitions, 660 flow [2024-11-16 23:13:50,340 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=660, PETRI_PLACES=311, PETRI_TRANSITIONS=314} [2024-11-16 23:13:50,341 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -8 predicate places. [2024-11-16 23:13:50,341 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 314 transitions, 660 flow [2024-11-16 23:13:50,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 282.5) internal successors, (1695), 6 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:50,342 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:50,342 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:50,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 23:13:50,342 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:50,343 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:50,344 INFO L85 PathProgramCache]: Analyzing trace with hash 527492680, now seen corresponding path program 1 times [2024-11-16 23:13:50,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:50,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63639728] [2024-11-16 23:13:50,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:50,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:50,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:50,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63639728] [2024-11-16 23:13:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63639728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:50,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:50,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:50,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634848904] [2024-11-16 23:13:50,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:50,391 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:50,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:50,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:50,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:50,411 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 304 out of 345 [2024-11-16 23:13:50,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 314 transitions, 660 flow. Second operand has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:50,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:50,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 304 of 345 [2024-11-16 23:13:50,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:50,939 INFO L124 PetriNetUnfolderBase]: 365/3211 cut-off events. [2024-11-16 23:13:50,940 INFO L125 PetriNetUnfolderBase]: For 282/282 co-relation queries the response was YES. [2024-11-16 23:13:50,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3677 conditions, 3211 events. 365/3211 cut-off events. For 282/282 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 28002 event pairs, 204 based on Foata normal form. 1/2795 useless extension candidates. Maximal degree in co-relation 3611. Up to 330 conditions per place. [2024-11-16 23:13:50,973 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 16 selfloop transitions, 2 changer transitions 0/315 dead transitions. [2024-11-16 23:13:50,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 315 transitions, 700 flow [2024-11-16 23:13:50,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:50,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:50,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 931 transitions. [2024-11-16 23:13:50,977 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8995169082125604 [2024-11-16 23:13:50,977 INFO L175 Difference]: Start difference. First operand has 311 places, 314 transitions, 660 flow. Second operand 3 states and 931 transitions. [2024-11-16 23:13:50,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 315 transitions, 700 flow [2024-11-16 23:13:50,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 315 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:50,982 INFO L231 Difference]: Finished difference. Result has 309 places, 315 transitions, 662 flow [2024-11-16 23:13:50,983 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=312, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=662, PETRI_PLACES=309, PETRI_TRANSITIONS=315} [2024-11-16 23:13:50,983 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -10 predicate places. [2024-11-16 23:13:50,983 INFO L471 AbstractCegarLoop]: Abstraction has has 309 places, 315 transitions, 662 flow [2024-11-16 23:13:50,984 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 306.0) internal successors, (918), 3 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:50,984 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:50,984 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:50,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 23:13:50,984 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:50,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:50,985 INFO L85 PathProgramCache]: Analyzing trace with hash -184534328, now seen corresponding path program 1 times [2024-11-16 23:13:50,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:50,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723584221] [2024-11-16 23:13:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:51,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:51,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723584221] [2024-11-16 23:13:51,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723584221] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:51,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855514022] [2024-11-16 23:13:51,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:51,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:51,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:51,052 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:51,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-16 23:13:51,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:51,153 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 23:13:51,154 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:51,172 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:13:51,173 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:13:51,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855514022] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:51,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:13:51,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-16 23:13:51,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22657097] [2024-11-16 23:13:51,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:51,174 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:51,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:51,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:51,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:51,209 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 303 out of 345 [2024-11-16 23:13:51,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 315 transitions, 662 flow. Second operand has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:51,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:51,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 303 of 345 [2024-11-16 23:13:51,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:52,383 INFO L124 PetriNetUnfolderBase]: 1176/7841 cut-off events. [2024-11-16 23:13:52,384 INFO L125 PetriNetUnfolderBase]: For 692/692 co-relation queries the response was YES. [2024-11-16 23:13:52,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9457 conditions, 7841 events. 1176/7841 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 85800 event pairs, 690 based on Foata normal form. 40/6768 useless extension candidates. Maximal degree in co-relation 9408. Up to 1091 conditions per place. [2024-11-16 23:13:52,468 INFO L140 encePairwiseOnDemand]: 342/345 looper letters, 27 selfloop transitions, 2 changer transitions 0/325 dead transitions. [2024-11-16 23:13:52,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 325 transitions, 755 flow [2024-11-16 23:13:52,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:52,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:52,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 939 transitions. [2024-11-16 23:13:52,470 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9072463768115943 [2024-11-16 23:13:52,471 INFO L175 Difference]: Start difference. First operand has 309 places, 315 transitions, 662 flow. Second operand 3 states and 939 transitions. [2024-11-16 23:13:52,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 325 transitions, 755 flow [2024-11-16 23:13:52,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 325 transitions, 753 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:52,478 INFO L231 Difference]: Finished difference. Result has 311 places, 316 transitions, 672 flow [2024-11-16 23:13:52,478 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=660, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=672, PETRI_PLACES=311, PETRI_TRANSITIONS=316} [2024-11-16 23:13:52,479 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, -8 predicate places. [2024-11-16 23:13:52,479 INFO L471 AbstractCegarLoop]: Abstraction has has 311 places, 316 transitions, 672 flow [2024-11-16 23:13:52,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 305.3333333333333) internal successors, (916), 3 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:52,479 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:52,480 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:52,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 23:13:52,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:52,680 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:52,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -326702611, now seen corresponding path program 1 times [2024-11-16 23:13:52,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:52,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429690464] [2024-11-16 23:13:52,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:52,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:52,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:52,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:52,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:52,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429690464] [2024-11-16 23:13:52,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429690464] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:52,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711450296] [2024-11-16 23:13:52,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:52,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:52,737 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:52,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-16 23:13:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:52,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 23:13:52,835 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:52,860 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:52,860 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:52,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:52,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711450296] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:52,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-16 23:13:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36620651] [2024-11-16 23:13:52,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:52,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 23:13:52,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:52,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 23:13:52,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-16 23:13:53,061 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 345 [2024-11-16 23:13:53,064 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 316 transitions, 672 flow. Second operand has 10 states, 10 states have (on average 302.9) internal successors, (3029), 10 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:53,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:53,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 345 [2024-11-16 23:13:53,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:53,539 INFO L124 PetriNetUnfolderBase]: 366/3248 cut-off events. [2024-11-16 23:13:53,540 INFO L125 PetriNetUnfolderBase]: For 284/284 co-relation queries the response was YES. [2024-11-16 23:13:53,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3727 conditions, 3248 events. 366/3248 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27775 event pairs, 204 based on Foata normal form. 2/2828 useless extension candidates. Maximal degree in co-relation 3627. Up to 330 conditions per place. [2024-11-16 23:13:53,592 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 20 selfloop transitions, 9 changer transitions 0/324 dead transitions. [2024-11-16 23:13:53,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 324 transitions, 748 flow [2024-11-16 23:13:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 23:13:53,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-16 23:13:53,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2740 transitions. [2024-11-16 23:13:53,595 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8824476650563607 [2024-11-16 23:13:53,595 INFO L175 Difference]: Start difference. First operand has 311 places, 316 transitions, 672 flow. Second operand 9 states and 2740 transitions. [2024-11-16 23:13:53,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 324 transitions, 748 flow [2024-11-16 23:13:53,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 324 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:53,600 INFO L231 Difference]: Finished difference. Result has 321 places, 322 transitions, 720 flow [2024-11-16 23:13:53,600 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=720, PETRI_PLACES=321, PETRI_TRANSITIONS=322} [2024-11-16 23:13:53,601 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 2 predicate places. [2024-11-16 23:13:53,601 INFO L471 AbstractCegarLoop]: Abstraction has has 321 places, 322 transitions, 720 flow [2024-11-16 23:13:53,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 302.9) internal successors, (3029), 10 states have internal predecessors, (3029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:53,602 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:53,602 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:53,616 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-16 23:13:53,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:53,807 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:53,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1656376595, now seen corresponding path program 2 times [2024-11-16 23:13:53,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:53,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095573170] [2024-11-16 23:13:53,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:53,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:53,919 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:53,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095573170] [2024-11-16 23:13:53,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095573170] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:53,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804826160] [2024-11-16 23:13:53,920 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 23:13:53,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:53,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:53,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:53,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-16 23:13:54,063 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-16 23:13:54,063 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 23:13:54,064 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-16 23:13:54,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:54,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-16 23:13:54,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2024-11-16 23:13:54,156 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 23:13:54,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2024-11-16 23:13:54,191 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-16 23:13:54,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2024-11-16 23:13:54,220 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-16 23:13:54,220 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 23:13:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804826160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:54,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 23:13:54,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-16 23:13:54,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098383736] [2024-11-16 23:13:54,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:54,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:54,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:54,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:54,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-16 23:13:54,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 294 out of 345 [2024-11-16 23:13:54,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 322 transitions, 720 flow. Second operand has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:54,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:54,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 294 of 345 [2024-11-16 23:13:54,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:56,325 INFO L124 PetriNetUnfolderBase]: 1957/10462 cut-off events. [2024-11-16 23:13:56,325 INFO L125 PetriNetUnfolderBase]: For 1261/1261 co-relation queries the response was YES. [2024-11-16 23:13:56,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13515 conditions, 10462 events. 1957/10462 cut-off events. For 1261/1261 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 116992 event pairs, 609 based on Foata normal form. 0/9148 useless extension candidates. Maximal degree in co-relation 13401. Up to 983 conditions per place. [2024-11-16 23:13:56,471 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 58 selfloop transitions, 6 changer transitions 0/357 dead transitions. [2024-11-16 23:13:56,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 325 places, 357 transitions, 978 flow [2024-11-16 23:13:56,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:56,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:56,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1828 transitions. [2024-11-16 23:13:56,473 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8830917874396135 [2024-11-16 23:13:56,474 INFO L175 Difference]: Start difference. First operand has 321 places, 322 transitions, 720 flow. Second operand 6 states and 1828 transitions. [2024-11-16 23:13:56,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 325 places, 357 transitions, 978 flow [2024-11-16 23:13:56,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 357 transitions, 972 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:56,497 INFO L231 Difference]: Finished difference. Result has 324 places, 321 transitions, 724 flow [2024-11-16 23:13:56,500 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=315, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=724, PETRI_PLACES=324, PETRI_TRANSITIONS=321} [2024-11-16 23:13:56,501 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 5 predicate places. [2024-11-16 23:13:56,501 INFO L471 AbstractCegarLoop]: Abstraction has has 324 places, 321 transitions, 724 flow [2024-11-16 23:13:56,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 296.3333333333333) internal successors, (1778), 6 states have internal predecessors, (1778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:56,502 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:56,502 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:56,535 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 23:13:56,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:56,703 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:56,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:56,704 INFO L85 PathProgramCache]: Analyzing trace with hash -319515672, now seen corresponding path program 1 times [2024-11-16 23:13:56,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:56,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882014757] [2024-11-16 23:13:56,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:56,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:56,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:13:56,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882014757] [2024-11-16 23:13:56,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882014757] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 23:13:56,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [304921310] [2024-11-16 23:13:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:56,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 23:13:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:56,926 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 23:13:56,927 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-16 23:13:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:57,040 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 23:13:57,041 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 23:13:57,134 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:13:57,134 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 23:13:57,220 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-16 23:13:57,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [304921310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 23:13:57,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 23:13:57,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-16 23:13:57,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030765051] [2024-11-16 23:13:57,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 23:13:57,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-16 23:13:57,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:57,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-16 23:13:57,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-16 23:13:57,306 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 345 [2024-11-16 23:13:57,310 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 321 transitions, 724 flow. Second operand has 15 states, 15 states have (on average 303.26666666666665) internal successors, (4549), 15 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:57,310 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:57,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 345 [2024-11-16 23:13:57,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:58,028 INFO L124 PetriNetUnfolderBase]: 365/3290 cut-off events. [2024-11-16 23:13:58,028 INFO L125 PetriNetUnfolderBase]: For 328/328 co-relation queries the response was YES. [2024-11-16 23:13:58,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3828 conditions, 3290 events. 365/3290 cut-off events. For 328/328 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 27826 event pairs, 204 based on Foata normal form. 3/2873 useless extension candidates. Maximal degree in co-relation 3642. Up to 330 conditions per place. [2024-11-16 23:13:58,076 INFO L140 encePairwiseOnDemand]: 339/345 looper letters, 23 selfloop transitions, 18 changer transitions 0/335 dead transitions. [2024-11-16 23:13:58,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 335 transitions, 874 flow [2024-11-16 23:13:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-16 23:13:58,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-16 23:13:58,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5462 transitions. [2024-11-16 23:13:58,083 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.879549114331723 [2024-11-16 23:13:58,083 INFO L175 Difference]: Start difference. First operand has 324 places, 321 transitions, 724 flow. Second operand 18 states and 5462 transitions. [2024-11-16 23:13:58,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 335 transitions, 874 flow [2024-11-16 23:13:58,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 335 transitions, 862 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:58,088 INFO L231 Difference]: Finished difference. Result has 340 places, 331 transitions, 818 flow [2024-11-16 23:13:58,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=345, PETRI_DIFFERENCE_MINUEND_FLOW=712, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=818, PETRI_PLACES=340, PETRI_TRANSITIONS=331} [2024-11-16 23:13:58,089 INFO L277 CegarLoopForPetriNet]: 319 programPoint places, 21 predicate places. [2024-11-16 23:13:58,089 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 331 transitions, 818 flow [2024-11-16 23:13:58,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 303.26666666666665) internal successors, (4549), 15 states have internal predecessors, (4549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:58,091 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:58,091 INFO L204 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:58,104 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 23:13:58,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-16 23:13:58,292 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-16 23:13:58,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1833004696, now seen corresponding path program 2 times [2024-11-16 23:13:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:58,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274128336] [2024-11-16 23:13:58,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:58,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:58,339 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:58,382 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:58,382 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:58,382 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-16 23:13:58,383 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-16 23:13:58,384 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-16 23:13:58,385 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-16 23:13:58,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 23:13:58,386 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-16 23:13:58,388 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:58,388 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-16 23:13:58,462 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:58,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 417 transitions, 874 flow [2024-11-16 23:13:58,630 INFO L124 PetriNetUnfolderBase]: 48/475 cut-off events. [2024-11-16 23:13:58,637 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-16 23:13:58,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 475 events. 48/475 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1754 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 404. Up to 12 conditions per place. [2024-11-16 23:13:58,648 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 417 transitions, 874 flow [2024-11-16 23:13:58,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 385 places, 417 transitions, 874 flow [2024-11-16 23:13:58,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:58,661 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;@6fa00c05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:58,661 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-16 23:13:58,664 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:58,664 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-16 23:13:58,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:58,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:58,665 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] [2024-11-16 23:13:58,665 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 22 more)] === [2024-11-16 23:13:58,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash 998305403, now seen corresponding path program 1 times [2024-11-16 23:13:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:58,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128179520] [2024-11-16 23:13:58,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:58,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:58,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:58,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128179520] [2024-11-16 23:13:58,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128179520] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:58,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:58,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:58,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610683212] [2024-11-16 23:13:58,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:58,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:58,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:58,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:58,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:59,253 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 341 out of 417 [2024-11-16 23:13:59,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 417 transitions, 874 flow. Second operand has 6 states, 6 states have (on average 342.5) internal successors, (2055), 6 states have internal predecessors, (2055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:59,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:59,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 341 of 417 [2024-11-16 23:13:59,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand