./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 023d838f 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.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 ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 14:06:59,757 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 14:06:59,837 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-10 14:06:59,840 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 14:06:59,842 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 14:06:59,865 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 14:06:59,865 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 14:06:59,866 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 14:06:59,867 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 14:06:59,867 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 14:06:59,868 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 14:06:59,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 14:06:59,869 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 14:06:59,870 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 14:06:59,872 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 14:06:59,872 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 14:06:59,872 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 14:06:59,873 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 14:06:59,873 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 14:06:59,873 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 14:06:59,873 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 14:06:59,874 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 14:06:59,875 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-10 14:06:59,875 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 14:06:59,875 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 14:06:59,875 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 14:06:59,875 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 14:06:59,876 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 14:06:59,876 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 14:06:59,876 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 14:06:59,876 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 14:06:59,876 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:06:59,877 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 14:06:59,877 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 14:06:59,877 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 14:06:59,877 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 14:06:59,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 14:06:59,877 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 14:06:59,878 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 14:06:59,878 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 14:06:59,878 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 14:06:59,879 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec355916cf6ee76d4008e84bb2b3ecc632256e3b320d2f47b453f4ca1f46acbc [2024-11-10 14:07:00,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 14:07:00,094 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 14:07:00,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 14:07:00,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 14:07:00,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 14:07:00,099 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-10 14:07:01,392 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 14:07:01,601 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 14:07:01,602 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt.i [2024-11-10 14:07:01,615 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d00614f/ff5508239770424aa3961a1c81a82777/FLAGb5b73f5cd [2024-11-10 14:07:01,626 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b5d00614f/ff5508239770424aa3961a1c81a82777 [2024-11-10 14:07:01,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 14:07:01,629 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 14:07:01,631 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 14:07:01,631 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 14:07:01,636 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 14:07:01,637 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:07:01" (1/1) ... [2024-11-10 14:07:01,638 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3178c41a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:01, skipping insertion in model container [2024-11-10 14:07:01,638 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 02:07:01" (1/1) ... [2024-11-10 14:07:01,678 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 14:07:02,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:07:02,026 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 14:07:02,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 14:07:02,109 INFO L204 MainTranslator]: Completed translation [2024-11-10 14:07:02,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02 WrapperNode [2024-11-10 14:07:02,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 14:07:02,111 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 14:07:02,111 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 14:07:02,111 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 14:07:02,117 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,169 INFO L138 Inliner]: procedures = 164, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 114 [2024-11-10 14:07:02,170 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 14:07:02,170 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 14:07:02,170 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 14:07:02,171 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 14:07:02,179 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,179 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,183 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,185 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,193 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,193 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,198 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,199 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,201 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 14:07:02,206 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 14:07:02,206 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 14:07:02,206 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 14:07:02,206 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (1/1) ... [2024-11-10 14:07:02,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 14:07:02,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:02,305 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) [2024-11-10 14:07:02,310 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 [2024-11-10 14:07:02,348 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 14:07:02,349 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-10 14:07:02,349 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 14:07:02,350 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 14:07:02,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 14:07:02,351 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 14:07:02,470 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 14:07:02,472 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 14:07:02,689 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 14:07:02,689 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 14:07:02,721 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 14:07:02,721 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 14:07:02,721 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:07:02 BoogieIcfgContainer [2024-11-10 14:07:02,721 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 14:07:02,723 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 14:07:02,723 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 14:07:02,727 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 14:07:02,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 02:07:01" (1/3) ... [2024-11-10 14:07:02,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b66a30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:07:02, skipping insertion in model container [2024-11-10 14:07:02,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 02:07:02" (2/3) ... [2024-11-10 14:07:02,727 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b66a30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 02:07:02, skipping insertion in model container [2024-11-10 14:07:02,728 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 02:07:02" (3/3) ... [2024-11-10 14:07:02,728 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2024-11-10 14:07:02,746 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 14:07:02,746 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2024-11-10 14:07:02,747 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 14:07:02,809 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:02,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 133 transitions, 270 flow [2024-11-10 14:07:02,899 INFO L124 PetriNetUnfolderBase]: 12/143 cut-off events. [2024-11-10 14:07:02,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:02,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 143 events. 12/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 195 event pairs, 0 based on Foata normal form. 0/124 useless extension candidates. Maximal degree in co-relation 87. Up to 4 conditions per place. [2024-11-10 14:07:02,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 133 transitions, 270 flow [2024-11-10 14:07:02,910 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 133 transitions, 270 flow [2024-11-10 14:07:02,920 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:02,926 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;@7375f9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:02,927 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2024-11-10 14:07:02,940 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:02,941 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:02,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:02,941 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:02,941 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] [2024-11-10 14:07:02,942 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)] === [2024-11-10 14:07:02,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:02,949 INFO L85 PathProgramCache]: Analyzing trace with hash -380182658, now seen corresponding path program 1 times [2024-11-10 14:07:02,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:02,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818712739] [2024-11-10 14:07:02,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:02,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:03,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:03,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:03,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:03,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818712739] [2024-11-10 14:07:03,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818712739] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:03,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:03,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:03,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055209718] [2024-11-10 14:07:03,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:03,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:03,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:03,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:03,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:03,779 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 133 [2024-11-10 14:07:03,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 133 transitions, 270 flow. Second operand has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 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) [2024-11-10 14:07:03,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:03,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 133 [2024-11-10 14:07:03,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:03,831 INFO L124 PetriNetUnfolderBase]: 5/125 cut-off events. [2024-11-10 14:07:03,833 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-10 14:07:03,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 125 events. 5/125 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 135 event pairs, 0 based on Foata normal form. 25/139 useless extension candidates. Maximal degree in co-relation 84. Up to 16 conditions per place. [2024-11-10 14:07:03,835 INFO L140 encePairwiseOnDemand]: 120/133 looper letters, 15 selfloop transitions, 5 changer transitions 0/120 dead transitions. [2024-11-10 14:07:03,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 120 transitions, 284 flow [2024-11-10 14:07:03,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 646 transitions. [2024-11-10 14:07:03,851 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8095238095238095 [2024-11-10 14:07:03,852 INFO L175 Difference]: Start difference. First operand has 125 places, 133 transitions, 270 flow. Second operand 6 states and 646 transitions. [2024-11-10 14:07:03,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 120 transitions, 284 flow [2024-11-10 14:07:03,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 120 transitions, 284 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:07:03,857 INFO L231 Difference]: Finished difference. Result has 123 places, 120 transitions, 254 flow [2024-11-10 14:07:03,859 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=254, PETRI_PLACES=123, PETRI_TRANSITIONS=120} [2024-11-10 14:07:03,861 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, -2 predicate places. [2024-11-10 14:07:03,862 INFO L471 AbstractCegarLoop]: Abstraction has has 123 places, 120 transitions, 254 flow [2024-11-10 14:07:03,862 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 104.5) internal successors, (627), 6 states have internal predecessors, (627), 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) [2024-11-10 14:07:03,862 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:03,862 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] [2024-11-10 14:07:03,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 14:07:03,863 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)] === [2024-11-10 14:07:03,864 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash 372306082, now seen corresponding path program 1 times [2024-11-10 14:07:03,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:03,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367865369] [2024-11-10 14:07:03,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:03,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:03,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:03,912 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367865369] [2024-11-10 14:07:03,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367865369] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:03,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:03,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:07:03,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909031422] [2024-11-10 14:07:03,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:03,915 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:03,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:03,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:03,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:07:03,936 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 133 [2024-11-10 14:07:03,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 120 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-11-10 14:07:03,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:03,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 133 [2024-11-10 14:07:03,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:03,970 INFO L124 PetriNetUnfolderBase]: 5/138 cut-off events. [2024-11-10 14:07:03,971 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-10 14:07:03,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 138 events. 5/138 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 126 event pairs, 0 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 102. Up to 11 conditions per place. [2024-11-10 14:07:03,972 INFO L140 encePairwiseOnDemand]: 130/133 looper letters, 9 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2024-11-10 14:07:03,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 121 transitions, 280 flow [2024-11-10 14:07:03,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:03,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:03,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 354 transitions. [2024-11-10 14:07:03,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8872180451127819 [2024-11-10 14:07:03,974 INFO L175 Difference]: Start difference. First operand has 123 places, 120 transitions, 254 flow. Second operand 3 states and 354 transitions. [2024-11-10 14:07:03,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 121 transitions, 280 flow [2024-11-10 14:07:03,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 121 transitions, 268 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:03,977 INFO L231 Difference]: Finished difference. Result has 121 places, 121 transitions, 256 flow [2024-11-10 14:07:03,978 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=256, PETRI_PLACES=121, PETRI_TRANSITIONS=121} [2024-11-10 14:07:03,978 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, -4 predicate places. [2024-11-10 14:07:03,979 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 121 transitions, 256 flow [2024-11-10 14:07:03,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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) [2024-11-10 14:07:03,979 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:03,979 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] [2024-11-10 14:07:03,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 14:07:03,980 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)] === [2024-11-10 14:07:03,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:03,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1826425197, now seen corresponding path program 1 times [2024-11-10 14:07:03,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:03,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342805928] [2024-11-10 14:07:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:03,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:04,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:04,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342805928] [2024-11-10 14:07:04,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342805928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:04,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000772891] [2024-11-10 14:07:04,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:04,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:04,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:04,074 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) [2024-11-10 14:07:04,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 14:07:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:04,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:07:04,161 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:04,219 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:04,221 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:04,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000772891] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:04,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:04,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:07:04,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269533400] [2024-11-10 14:07:04,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:04,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:07:04,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:04,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:07:04,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:07:04,326 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 133 [2024-11-10 14:07:04,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 121 transitions, 256 flow. Second operand has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 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) [2024-11-10 14:07:04,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:04,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 133 [2024-11-10 14:07:04,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:04,434 INFO L124 PetriNetUnfolderBase]: 5/155 cut-off events. [2024-11-10 14:07:04,438 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-10 14:07:04,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 190 conditions, 155 events. 5/155 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 2/147 useless extension candidates. Maximal degree in co-relation 139. Up to 11 conditions per place. [2024-11-10 14:07:04,439 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 13 selfloop transitions, 9 changer transitions 0/129 dead transitions. [2024-11-10 14:07:04,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 129 transitions, 318 flow [2024-11-10 14:07:04,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:07:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:07:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1023 transitions. [2024-11-10 14:07:04,441 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8546365914786967 [2024-11-10 14:07:04,441 INFO L175 Difference]: Start difference. First operand has 121 places, 121 transitions, 256 flow. Second operand 9 states and 1023 transitions. [2024-11-10 14:07:04,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 129 transitions, 318 flow [2024-11-10 14:07:04,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 129 transitions, 316 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:04,448 INFO L231 Difference]: Finished difference. Result has 131 places, 127 transitions, 304 flow [2024-11-10 14:07:04,448 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=304, PETRI_PLACES=131, PETRI_TRANSITIONS=127} [2024-11-10 14:07:04,449 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 6 predicate places. [2024-11-10 14:07:04,452 INFO L471 AbstractCegarLoop]: Abstraction has has 131 places, 127 transitions, 304 flow [2024-11-10 14:07:04,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 112.9) internal successors, (1129), 10 states have internal predecessors, (1129), 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) [2024-11-10 14:07:04,453 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:04,453 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] [2024-11-10 14:07:04,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 14:07:04,653 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 [2024-11-10 14:07:04,654 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)] === [2024-11-10 14:07:04,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:04,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1389749557, now seen corresponding path program 2 times [2024-11-10 14:07:04,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:04,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709106187] [2024-11-10 14:07:04,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:04,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:04,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:04,852 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:04,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:04,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709106187] [2024-11-10 14:07:04,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709106187] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:04,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924372967] [2024-11-10 14:07:04,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:07:04,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:04,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:04,855 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) [2024-11-10 14:07:04,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 14:07:04,950 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:07:04,950 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:07:04,951 INFO L255 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:07:04,953 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:05,040 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:05,042 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:05,139 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-10 14:07:05,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924372967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:05,139 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:05,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:07:05,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197232333] [2024-11-10 14:07:05,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:05,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:07:05,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:07:05,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:07:05,211 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 133 [2024-11-10 14:07:05,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 127 transitions, 304 flow. Second operand has 15 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 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) [2024-11-10 14:07:05,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:05,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 133 [2024-11-10 14:07:05,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:05,357 INFO L124 PetriNetUnfolderBase]: 5/197 cut-off events. [2024-11-10 14:07:05,358 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2024-11-10 14:07:05,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 286 conditions, 197 events. 5/197 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 102 event pairs, 0 based on Foata normal form. 3/190 useless extension candidates. Maximal degree in co-relation 194. Up to 11 conditions per place. [2024-11-10 14:07:05,359 INFO L140 encePairwiseOnDemand]: 127/133 looper letters, 16 selfloop transitions, 18 changer transitions 0/141 dead transitions. [2024-11-10 14:07:05,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 141 transitions, 446 flow [2024-11-10 14:07:05,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:07:05,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:07:05,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2035 transitions. [2024-11-10 14:07:05,363 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8500417710944027 [2024-11-10 14:07:05,363 INFO L175 Difference]: Start difference. First operand has 131 places, 127 transitions, 304 flow. Second operand 18 states and 2035 transitions. [2024-11-10 14:07:05,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 141 transitions, 446 flow [2024-11-10 14:07:05,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 141 transitions, 434 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:05,367 INFO L231 Difference]: Finished difference. Result has 151 places, 137 transitions, 404 flow [2024-11-10 14:07:05,368 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=133, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=404, PETRI_PLACES=151, PETRI_TRANSITIONS=137} [2024-11-10 14:07:05,369 INFO L277 CegarLoopForPetriNet]: 125 programPoint places, 26 predicate places. [2024-11-10 14:07:05,369 INFO L471 AbstractCegarLoop]: Abstraction has has 151 places, 137 transitions, 404 flow [2024-11-10 14:07:05,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 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) [2024-11-10 14:07:05,370 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:05,370 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] [2024-11-10 14:07:05,383 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 14:07:05,574 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 [2024-11-10 14:07:05,575 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)] === [2024-11-10 14:07:05,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:05,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2070121976, now seen corresponding path program 3 times [2024-11-10 14:07:05,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:05,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606465456] [2024-11-10 14:07:05,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:05,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:05,611 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:07:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:05,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:07:05,655 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:07:05,656 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2024-11-10 14:07:05,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2024-11-10 14:07:05,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2024-11-10 14:07:05,657 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2024-11-10 14:07:05,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2024-11-10 14:07:05,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2024-11-10 14:07:05,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2024-11-10 14:07:05,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2024-11-10 14:07:05,658 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2024-11-10 14:07:05,659 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2024-11-10 14:07:05,659 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 14:07:05,659 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:07:05,661 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:07:05,661 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 14:07:05,689 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:05,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 195 places, 209 transitions, 428 flow [2024-11-10 14:07:05,719 INFO L124 PetriNetUnfolderBase]: 21/231 cut-off events. [2024-11-10 14:07:05,720 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 14:07:05,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 231 events. 21/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 527 event pairs, 0 based on Foata normal form. 0/198 useless extension candidates. Maximal degree in co-relation 162. Up to 6 conditions per place. [2024-11-10 14:07:05,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 195 places, 209 transitions, 428 flow [2024-11-10 14:07:05,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 195 places, 209 transitions, 428 flow [2024-11-10 14:07:05,725 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:05,726 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;@7375f9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:05,727 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2024-11-10 14:07:05,731 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:05,731 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:05,731 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:05,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:05,732 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] [2024-11-10 14:07:05,732 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)] === [2024-11-10 14:07:05,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:05,733 INFO L85 PathProgramCache]: Analyzing trace with hash -230298178, now seen corresponding path program 1 times [2024-11-10 14:07:05,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:05,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552813829] [2024-11-10 14:07:05,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:05,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:05,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:05,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:05,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552813829] [2024-11-10 14:07:05,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552813829] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:05,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:05,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97691423] [2024-11-10 14:07:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:05,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:05,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:05,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:05,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:06,064 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 209 [2024-11-10 14:07:06,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 209 transitions, 428 flow. Second operand has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 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) [2024-11-10 14:07:06,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:06,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 209 [2024-11-10 14:07:06,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:06,214 INFO L124 PetriNetUnfolderBase]: 134/877 cut-off events. [2024-11-10 14:07:06,215 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2024-11-10 14:07:06,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 877 events. 134/877 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 5518 event pairs, 72 based on Foata normal form. 251/1000 useless extension candidates. Maximal degree in co-relation 396. Up to 193 conditions per place. [2024-11-10 14:07:06,225 INFO L140 encePairwiseOnDemand]: 192/209 looper letters, 24 selfloop transitions, 5 changer transitions 0/190 dead transitions. [2024-11-10 14:07:06,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 190 transitions, 448 flow [2024-11-10 14:07:06,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:06,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:06,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1031 transitions. [2024-11-10 14:07:06,227 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8221690590111643 [2024-11-10 14:07:06,227 INFO L175 Difference]: Start difference. First operand has 195 places, 209 transitions, 428 flow. Second operand 6 states and 1031 transitions. [2024-11-10 14:07:06,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 190 transitions, 448 flow [2024-11-10 14:07:06,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 190 transitions, 448 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 14:07:06,230 INFO L231 Difference]: Finished difference. Result has 191 places, 190 transitions, 400 flow [2024-11-10 14:07:06,230 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=400, PETRI_PLACES=191, PETRI_TRANSITIONS=190} [2024-11-10 14:07:06,231 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, -4 predicate places. [2024-11-10 14:07:06,232 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 190 transitions, 400 flow [2024-11-10 14:07:06,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.5) internal successors, (999), 6 states have internal predecessors, (999), 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) [2024-11-10 14:07:06,233 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:06,233 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] [2024-11-10 14:07:06,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 14:07:06,233 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)] === [2024-11-10 14:07:06,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:06,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1661324200, now seen corresponding path program 1 times [2024-11-10 14:07:06,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:06,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88349134] [2024-11-10 14:07:06,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:06,256 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:06,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:06,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88349134] [2024-11-10 14:07:06,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88349134] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:06,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:06,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:07:06,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171222393] [2024-11-10 14:07:06,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:06,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:06,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:06,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:06,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:07:06,272 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 209 [2024-11-10 14:07:06,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 190 transitions, 400 flow. Second operand has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2024-11-10 14:07:06,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:06,274 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 209 [2024-11-10 14:07:06,274 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:06,332 INFO L124 PetriNetUnfolderBase]: 45/547 cut-off events. [2024-11-10 14:07:06,332 INFO L125 PetriNetUnfolderBase]: For 23/23 co-relation queries the response was YES. [2024-11-10 14:07:06,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 635 conditions, 547 events. 45/547 cut-off events. For 23/23 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2454 event pairs, 20 based on Foata normal form. 1/487 useless extension candidates. Maximal degree in co-relation 571. Up to 56 conditions per place. [2024-11-10 14:07:06,336 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 14 selfloop transitions, 2 changer transitions 0/191 dead transitions. [2024-11-10 14:07:06,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 191 transitions, 436 flow [2024-11-10 14:07:06,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:06,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:06,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2024-11-10 14:07:06,338 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8883572567783095 [2024-11-10 14:07:06,338 INFO L175 Difference]: Start difference. First operand has 191 places, 190 transitions, 400 flow. Second operand 3 states and 557 transitions. [2024-11-10 14:07:06,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 191 transitions, 436 flow [2024-11-10 14:07:06,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 191 transitions, 424 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:06,340 INFO L231 Difference]: Finished difference. Result has 189 places, 191 transitions, 402 flow [2024-11-10 14:07:06,341 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=189, PETRI_TRANSITIONS=191} [2024-11-10 14:07:06,342 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, -6 predicate places. [2024-11-10 14:07:06,342 INFO L471 AbstractCegarLoop]: Abstraction has has 189 places, 191 transitions, 402 flow [2024-11-10 14:07:06,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.0) internal successors, (546), 3 states have internal predecessors, (546), 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) [2024-11-10 14:07:06,343 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:06,343 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] [2024-11-10 14:07:06,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-10 14:07:06,344 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)] === [2024-11-10 14:07:06,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -2020108871, now seen corresponding path program 1 times [2024-11-10 14:07:06,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:06,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590952698] [2024-11-10 14:07:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:06,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:06,410 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:06,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590952698] [2024-11-10 14:07:06,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590952698] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:06,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192758880] [2024-11-10 14:07:06,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:06,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:06,414 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) [2024-11-10 14:07:06,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 14:07:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:06,480 INFO L255 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:07:06,481 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:06,533 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:06,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:06,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192758880] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:06,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:06,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:07:06,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937160664] [2024-11-10 14:07:06,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:06,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:07:06,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:07:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:07:06,630 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 209 [2024-11-10 14:07:06,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 191 transitions, 402 flow. Second operand has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 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) [2024-11-10 14:07:06,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:06,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 209 [2024-11-10 14:07:06,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:06,739 INFO L124 PetriNetUnfolderBase]: 45/564 cut-off events. [2024-11-10 14:07:06,740 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2024-11-10 14:07:06,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660 conditions, 564 events. 45/564 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2430 event pairs, 20 based on Foata normal form. 2/505 useless extension candidates. Maximal degree in co-relation 608. Up to 56 conditions per place. [2024-11-10 14:07:06,744 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 18 selfloop transitions, 9 changer transitions 0/199 dead transitions. [2024-11-10 14:07:06,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 199 transitions, 474 flow [2024-11-10 14:07:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:07:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:07:06,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1622 transitions. [2024-11-10 14:07:06,747 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8623072833599149 [2024-11-10 14:07:06,747 INFO L175 Difference]: Start difference. First operand has 189 places, 191 transitions, 402 flow. Second operand 9 states and 1622 transitions. [2024-11-10 14:07:06,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 199 transitions, 474 flow [2024-11-10 14:07:06,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 199 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:06,764 INFO L231 Difference]: Finished difference. Result has 199 places, 197 transitions, 450 flow [2024-11-10 14:07:06,764 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=450, PETRI_PLACES=199, PETRI_TRANSITIONS=197} [2024-11-10 14:07:06,765 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, 4 predicate places. [2024-11-10 14:07:06,766 INFO L471 AbstractCegarLoop]: Abstraction has has 199 places, 197 transitions, 450 flow [2024-11-10 14:07:06,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 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) [2024-11-10 14:07:06,767 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:06,768 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] [2024-11-10 14:07:06,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 14:07:06,968 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 [2024-11-10 14:07:06,969 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)] === [2024-11-10 14:07:06,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:06,973 INFO L85 PathProgramCache]: Analyzing trace with hash 1300161691, now seen corresponding path program 2 times [2024-11-10 14:07:06,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:06,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884125601] [2024-11-10 14:07:06,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:06,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:07,080 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:07,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884125601] [2024-11-10 14:07:07,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884125601] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:07,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263517134] [2024-11-10 14:07:07,081 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:07:07,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:07,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:07,082 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) [2024-11-10 14:07:07,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 14:07:07,162 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:07:07,162 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:07:07,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:07:07,165 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:07,222 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:07,222 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:07,308 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-10 14:07:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263517134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:07,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:07,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:07:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276759261] [2024-11-10 14:07:07,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:07,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:07:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:07,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:07:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:07:07,402 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 177 out of 209 [2024-11-10 14:07:07,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 197 transitions, 450 flow. Second operand has 15 states, 15 states have (on average 179.13333333333333) internal successors, (2687), 15 states have internal predecessors, (2687), 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) [2024-11-10 14:07:07,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:07,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 177 of 209 [2024-11-10 14:07:07,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:07,584 INFO L124 PetriNetUnfolderBase]: 45/606 cut-off events. [2024-11-10 14:07:07,585 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2024-11-10 14:07:07,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 756 conditions, 606 events. 45/606 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2428 event pairs, 20 based on Foata normal form. 3/548 useless extension candidates. Maximal degree in co-relation 568. Up to 56 conditions per place. [2024-11-10 14:07:07,589 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 21 selfloop transitions, 18 changer transitions 0/211 dead transitions. [2024-11-10 14:07:07,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 211 transitions, 602 flow [2024-11-10 14:07:07,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:07:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:07:07,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3228 transitions. [2024-11-10 14:07:07,593 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8580542264752791 [2024-11-10 14:07:07,594 INFO L175 Difference]: Start difference. First operand has 199 places, 197 transitions, 450 flow. Second operand 18 states and 3228 transitions. [2024-11-10 14:07:07,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 211 transitions, 602 flow [2024-11-10 14:07:07,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 211 transitions, 590 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:07,597 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 550 flow [2024-11-10 14:07:07,598 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=550, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-11-10 14:07:07,598 INFO L277 CegarLoopForPetriNet]: 195 programPoint places, 24 predicate places. [2024-11-10 14:07:07,598 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 550 flow [2024-11-10 14:07:07,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 179.13333333333333) internal successors, (2687), 15 states have internal predecessors, (2687), 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) [2024-11-10 14:07:07,600 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:07,600 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] [2024-11-10 14:07:07,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 14:07:07,804 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 [2024-11-10 14:07:07,805 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)] === [2024-11-10 14:07:07,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:07,805 INFO L85 PathProgramCache]: Analyzing trace with hash -801759794, now seen corresponding path program 3 times [2024-11-10 14:07:07,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:07,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534715622] [2024-11-10 14:07:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:07,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:07,830 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:07:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:07,867 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:07:07,868 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:07:07,868 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2024-11-10 14:07:07,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 14 remaining) [2024-11-10 14:07:07,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 14 remaining) [2024-11-10 14:07:07,868 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (10 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (8 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 14 remaining) [2024-11-10 14:07:07,869 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 14 remaining) [2024-11-10 14:07:07,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-10 14:07:07,870 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:07:07,870 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:07:07,870 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 14:07:07,897 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:07,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 285 transitions, 588 flow [2024-11-10 14:07:07,923 INFO L124 PetriNetUnfolderBase]: 30/319 cut-off events. [2024-11-10 14:07:07,923 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 14:07:07,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 319 events. 30/319 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 974 event pairs, 0 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 237. Up to 8 conditions per place. [2024-11-10 14:07:07,926 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 285 transitions, 588 flow [2024-11-10 14:07:07,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 285 transitions, 588 flow [2024-11-10 14:07:07,930 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:07,930 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;@7375f9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:07,930 INFO L334 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2024-11-10 14:07:07,932 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:07,932 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:07,933 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:07,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:07,933 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] [2024-11-10 14:07:07,933 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)] === [2024-11-10 14:07:07,933 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:07,933 INFO L85 PathProgramCache]: Analyzing trace with hash 754992894, now seen corresponding path program 1 times [2024-11-10 14:07:07,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:07,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762268040] [2024-11-10 14:07:07,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:07,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:07,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:08,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:08,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:08,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762268040] [2024-11-10 14:07:08,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [762268040] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:08,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:08,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:08,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366498336] [2024-11-10 14:07:08,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:08,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:08,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:08,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:08,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:08,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 285 [2024-11-10 14:07:08,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 285 transitions, 588 flow. Second operand has 6 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 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) [2024-11-10 14:07:08,211 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:08,211 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 285 [2024-11-10 14:07:08,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:09,207 INFO L124 PetriNetUnfolderBase]: 2123/8224 cut-off events. [2024-11-10 14:07:09,208 INFO L125 PetriNetUnfolderBase]: For 622/622 co-relation queries the response was YES. [2024-11-10 14:07:09,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11218 conditions, 8224 events. 2123/8224 cut-off events. For 622/622 co-relation queries the response was YES. Maximal size of possible extension queue 320. Compared 88417 event pairs, 1368 based on Foata normal form. 2529/9372 useless extension candidates. Maximal degree in co-relation 1914. Up to 2632 conditions per place. [2024-11-10 14:07:09,268 INFO L140 encePairwiseOnDemand]: 264/285 looper letters, 33 selfloop transitions, 5 changer transitions 0/260 dead transitions. [2024-11-10 14:07:09,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 260 transitions, 614 flow [2024-11-10 14:07:09,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:09,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:09,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1416 transitions. [2024-11-10 14:07:09,270 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8280701754385965 [2024-11-10 14:07:09,270 INFO L175 Difference]: Start difference. First operand has 265 places, 285 transitions, 588 flow. Second operand 6 states and 1416 transitions. [2024-11-10 14:07:09,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 260 transitions, 614 flow [2024-11-10 14:07:09,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 260 transitions, 612 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-10 14:07:09,274 INFO L231 Difference]: Finished difference. Result has 259 places, 260 transitions, 546 flow [2024-11-10 14:07:09,274 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=546, PETRI_PLACES=259, PETRI_TRANSITIONS=260} [2024-11-10 14:07:09,275 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -6 predicate places. [2024-11-10 14:07:09,275 INFO L471 AbstractCegarLoop]: Abstraction has has 259 places, 260 transitions, 546 flow [2024-11-10 14:07:09,275 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 228.5) internal successors, (1371), 6 states have internal predecessors, (1371), 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) [2024-11-10 14:07:09,275 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:09,276 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] [2024-11-10 14:07:09,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-10 14:07:09,276 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)] === [2024-11-10 14:07:09,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:09,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1618021393, now seen corresponding path program 1 times [2024-11-10 14:07:09,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:09,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579862038] [2024-11-10 14:07:09,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:09,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:09,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:09,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:09,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579862038] [2024-11-10 14:07:09,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579862038] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:09,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:09,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:07:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208829613] [2024-11-10 14:07:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:09,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:07:09,315 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 246 out of 285 [2024-11-10 14:07:09,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 260 transitions, 546 flow. Second operand has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2024-11-10 14:07:09,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:09,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 246 of 285 [2024-11-10 14:07:09,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:09,641 INFO L124 PetriNetUnfolderBase]: 345/2692 cut-off events. [2024-11-10 14:07:09,641 INFO L125 PetriNetUnfolderBase]: For 168/168 co-relation queries the response was YES. [2024-11-10 14:07:09,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 2692 events. 345/2692 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22887 event pairs, 220 based on Foata normal form. 1/2376 useless extension candidates. Maximal degree in co-relation 3116. Up to 381 conditions per place. [2024-11-10 14:07:09,668 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 19 selfloop transitions, 2 changer transitions 0/261 dead transitions. [2024-11-10 14:07:09,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 261 transitions, 592 flow [2024-11-10 14:07:09,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:09,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:09,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 760 transitions. [2024-11-10 14:07:09,671 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2024-11-10 14:07:09,671 INFO L175 Difference]: Start difference. First operand has 259 places, 260 transitions, 546 flow. Second operand 3 states and 760 transitions. [2024-11-10 14:07:09,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 261 transitions, 592 flow [2024-11-10 14:07:09,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 261 transitions, 580 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:09,676 INFO L231 Difference]: Finished difference. Result has 257 places, 261 transitions, 548 flow [2024-11-10 14:07:09,677 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=548, PETRI_PLACES=257, PETRI_TRANSITIONS=261} [2024-11-10 14:07:09,677 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, -8 predicate places. [2024-11-10 14:07:09,677 INFO L471 AbstractCegarLoop]: Abstraction has has 257 places, 261 transitions, 548 flow [2024-11-10 14:07:09,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 248.33333333333334) internal successors, (745), 3 states have internal predecessors, (745), 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) [2024-11-10 14:07:09,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:09,678 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] [2024-11-10 14:07:09,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-10 14:07:09,678 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)] === [2024-11-10 14:07:09,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:09,679 INFO L85 PathProgramCache]: Analyzing trace with hash 2117167042, now seen corresponding path program 1 times [2024-11-10 14:07:09,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:09,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82293834] [2024-11-10 14:07:09,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:09,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:09,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:09,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82293834] [2024-11-10 14:07:09,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82293834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:09,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630956376] [2024-11-10 14:07:09,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:09,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:09,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:09,734 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) [2024-11-10 14:07:09,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 14:07:09,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:09,814 INFO L255 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:07:09,816 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:09,842 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:09,842 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:09,876 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:09,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630956376] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:09,877 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:09,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:07:09,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419230161] [2024-11-10 14:07:09,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:09,878 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:07:09,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:09,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:07:09,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:07:09,950 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2024-11-10 14:07:09,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 261 transitions, 548 flow. Second operand has 10 states, 10 states have (on average 245.1) internal successors, (2451), 10 states have internal predecessors, (2451), 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) [2024-11-10 14:07:09,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:09,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2024-11-10 14:07:09,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:10,255 INFO L124 PetriNetUnfolderBase]: 345/2709 cut-off events. [2024-11-10 14:07:10,256 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2024-11-10 14:07:10,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3206 conditions, 2709 events. 345/2709 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22851 event pairs, 220 based on Foata normal form. 2/2394 useless extension candidates. Maximal degree in co-relation 3153. Up to 381 conditions per place. [2024-11-10 14:07:10,279 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 23 selfloop transitions, 9 changer transitions 0/269 dead transitions. [2024-11-10 14:07:10,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 269 transitions, 630 flow [2024-11-10 14:07:10,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:07:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:07:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2221 transitions. [2024-11-10 14:07:10,282 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8658869395711501 [2024-11-10 14:07:10,282 INFO L175 Difference]: Start difference. First operand has 257 places, 261 transitions, 548 flow. Second operand 9 states and 2221 transitions. [2024-11-10 14:07:10,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 269 transitions, 630 flow [2024-11-10 14:07:10,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 269 transitions, 628 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:10,286 INFO L231 Difference]: Finished difference. Result has 267 places, 267 transitions, 596 flow [2024-11-10 14:07:10,286 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=596, PETRI_PLACES=267, PETRI_TRANSITIONS=267} [2024-11-10 14:07:10,286 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 2 predicate places. [2024-11-10 14:07:10,287 INFO L471 AbstractCegarLoop]: Abstraction has has 267 places, 267 transitions, 596 flow [2024-11-10 14:07:10,287 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 245.1) internal successors, (2451), 10 states have internal predecessors, (2451), 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) [2024-11-10 14:07:10,287 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:10,288 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] [2024-11-10 14:07:10,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 14:07:10,491 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 [2024-11-10 14:07:10,492 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)] === [2024-11-10 14:07:10,492 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:10,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1616784924, now seen corresponding path program 2 times [2024-11-10 14:07:10,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:10,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046371709] [2024-11-10 14:07:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:10,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:10,596 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:10,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:10,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046371709] [2024-11-10 14:07:10,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046371709] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:10,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [913144819] [2024-11-10 14:07:10,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:07:10,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:10,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:10,599 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) [2024-11-10 14:07:10,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 14:07:10,684 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 14:07:10,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:07:10,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:07:10,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:10,737 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:10,737 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:10,818 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-10 14:07:10,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [913144819] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:10,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:10,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:07:10,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376236098] [2024-11-10 14:07:10,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:10,819 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:07:10,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:10,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:07:10,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:07:10,885 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 285 [2024-11-10 14:07:10,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 267 places, 267 transitions, 596 flow. Second operand has 15 states, 15 states have (on average 245.2) internal successors, (3678), 15 states have internal predecessors, (3678), 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) [2024-11-10 14:07:10,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:10,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 285 [2024-11-10 14:07:10,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:11,375 INFO L124 PetriNetUnfolderBase]: 345/2751 cut-off events. [2024-11-10 14:07:11,375 INFO L125 PetriNetUnfolderBase]: For 216/216 co-relation queries the response was YES. [2024-11-10 14:07:11,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3302 conditions, 2751 events. 345/2751 cut-off events. For 216/216 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 22851 event pairs, 220 based on Foata normal form. 3/2437 useless extension candidates. Maximal degree in co-relation 3113. Up to 381 conditions per place. [2024-11-10 14:07:11,410 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 26 selfloop transitions, 18 changer transitions 0/281 dead transitions. [2024-11-10 14:07:11,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 281 transitions, 758 flow [2024-11-10 14:07:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:07:11,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:07:11,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 4421 transitions. [2024-11-10 14:07:11,424 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8617933723196881 [2024-11-10 14:07:11,424 INFO L175 Difference]: Start difference. First operand has 267 places, 267 transitions, 596 flow. Second operand 18 states and 4421 transitions. [2024-11-10 14:07:11,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 281 transitions, 758 flow [2024-11-10 14:07:11,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 281 transitions, 746 flow, removed 5 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:11,432 INFO L231 Difference]: Finished difference. Result has 287 places, 277 transitions, 696 flow [2024-11-10 14:07:11,433 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=590, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=696, PETRI_PLACES=287, PETRI_TRANSITIONS=277} [2024-11-10 14:07:11,433 INFO L277 CegarLoopForPetriNet]: 265 programPoint places, 22 predicate places. [2024-11-10 14:07:11,437 INFO L471 AbstractCegarLoop]: Abstraction has has 287 places, 277 transitions, 696 flow [2024-11-10 14:07:11,438 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 245.2) internal successors, (3678), 15 states have internal predecessors, (3678), 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) [2024-11-10 14:07:11,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:11,439 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] [2024-11-10 14:07:11,463 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-10 14:07:11,639 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 [2024-11-10 14:07:11,640 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)] === [2024-11-10 14:07:11,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:11,640 INFO L85 PathProgramCache]: Analyzing trace with hash 838508535, now seen corresponding path program 3 times [2024-11-10 14:07:11,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:11,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839325072] [2024-11-10 14:07:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:11,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:11,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:07:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:11,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:07:11,684 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:07:11,684 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2024-11-10 14:07:11,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 18 remaining) [2024-11-10 14:07:11,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 18 remaining) [2024-11-10 14:07:11,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 18 remaining) [2024-11-10 14:07:11,684 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (12 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 18 remaining) [2024-11-10 14:07:11,685 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 18 remaining) [2024-11-10 14:07:11,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 18 remaining) [2024-11-10 14:07:11,686 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 18 remaining) [2024-11-10 14:07:11,686 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-10 14:07:11,686 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-10 14:07:11,686 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:07:11,686 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 14:07:11,713 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:11,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 361 transitions, 750 flow [2024-11-10 14:07:11,750 INFO L124 PetriNetUnfolderBase]: 39/407 cut-off events. [2024-11-10 14:07:11,750 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 14:07:11,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 407 events. 39/407 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1413 event pairs, 0 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 327. Up to 10 conditions per place. [2024-11-10 14:07:11,754 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 361 transitions, 750 flow [2024-11-10 14:07:11,756 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 361 transitions, 750 flow [2024-11-10 14:07:11,757 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:11,757 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;@7375f9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:11,757 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-11-10 14:07:11,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:11,760 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:11,760 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:11,760 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:11,760 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] [2024-11-10 14:07:11,760 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)] === [2024-11-10 14:07:11,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:11,760 INFO L85 PathProgramCache]: Analyzing trace with hash -1719276738, now seen corresponding path program 1 times [2024-11-10 14:07:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:11,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934935932] [2024-11-10 14:07:11,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:11,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934935932] [2024-11-10 14:07:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934935932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:11,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:11,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:11,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479257829] [2024-11-10 14:07:11,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:11,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:11,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:11,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:11,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:12,058 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 289 out of 361 [2024-11-10 14:07:12,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 361 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 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) [2024-11-10 14:07:12,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:12,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 289 of 361 [2024-11-10 14:07:12,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:23,544 INFO L124 PetriNetUnfolderBase]: 27452/81721 cut-off events. [2024-11-10 14:07:23,545 INFO L125 PetriNetUnfolderBase]: For 9280/9280 co-relation queries the response was YES. [2024-11-10 14:07:24,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117758 conditions, 81721 events. 27452/81721 cut-off events. For 9280/9280 co-relation queries the response was YES. Maximal size of possible extension queue 3014. Compared 1151629 event pairs, 18864 based on Foata normal form. 25081/92425 useless extension candidates. Maximal degree in co-relation 11253. Up to 32029 conditions per place. [2024-11-10 14:07:25,109 INFO L140 encePairwiseOnDemand]: 336/361 looper letters, 42 selfloop transitions, 5 changer transitions 0/330 dead transitions. [2024-11-10 14:07:25,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 330 transitions, 782 flow [2024-11-10 14:07:25,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:25,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1801 transitions. [2024-11-10 14:07:25,111 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8314866112650047 [2024-11-10 14:07:25,111 INFO L175 Difference]: Start difference. First operand has 335 places, 361 transitions, 750 flow. Second operand 6 states and 1801 transitions. [2024-11-10 14:07:25,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 330 transitions, 782 flow [2024-11-10 14:07:25,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 330 transitions, 776 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-10 14:07:25,120 INFO L231 Difference]: Finished difference. Result has 327 places, 330 transitions, 692 flow [2024-11-10 14:07:25,121 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=692, PETRI_PLACES=327, PETRI_TRANSITIONS=330} [2024-11-10 14:07:25,122 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -8 predicate places. [2024-11-10 14:07:25,123 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 330 transitions, 692 flow [2024-11-10 14:07:25,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 290.5) internal successors, (1743), 6 states have internal predecessors, (1743), 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) [2024-11-10 14:07:25,123 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:25,123 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] [2024-11-10 14:07:25,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-10 14:07:25,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:25,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:25,124 INFO L85 PathProgramCache]: Analyzing trace with hash 798276025, now seen corresponding path program 1 times [2024-11-10 14:07:25,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:25,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356855977] [2024-11-10 14:07:25,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:25,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:25,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:25,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:25,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356855977] [2024-11-10 14:07:25,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356855977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:25,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:25,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 14:07:25,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733598584] [2024-11-10 14:07:25,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:25,179 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:25,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:25,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:25,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 14:07:25,203 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 312 out of 361 [2024-11-10 14:07:25,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 330 transitions, 692 flow. Second operand has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 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) [2024-11-10 14:07:25,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:25,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 312 of 361 [2024-11-10 14:07:25,204 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:27,185 INFO L124 PetriNetUnfolderBase]: 2345/13917 cut-off events. [2024-11-10 14:07:27,185 INFO L125 PetriNetUnfolderBase]: For 1218/1218 co-relation queries the response was YES. [2024-11-10 14:07:27,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16907 conditions, 13917 events. 2345/13917 cut-off events. For 1218/1218 co-relation queries the response was YES. Maximal size of possible extension queue 370. Compared 167763 event pairs, 1720 based on Foata normal form. 1/12321 useless extension candidates. Maximal degree in co-relation 16841. Up to 2506 conditions per place. [2024-11-10 14:07:27,295 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 24 selfloop transitions, 2 changer transitions 0/331 dead transitions. [2024-11-10 14:07:27,295 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 331 transitions, 748 flow [2024-11-10 14:07:27,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:27,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 963 transitions. [2024-11-10 14:07:27,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.889196675900277 [2024-11-10 14:07:27,297 INFO L175 Difference]: Start difference. First operand has 327 places, 330 transitions, 692 flow. Second operand 3 states and 963 transitions. [2024-11-10 14:07:27,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 331 transitions, 748 flow [2024-11-10 14:07:27,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 331 transitions, 736 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:27,302 INFO L231 Difference]: Finished difference. Result has 325 places, 331 transitions, 694 flow [2024-11-10 14:07:27,302 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=694, PETRI_PLACES=325, PETRI_TRANSITIONS=331} [2024-11-10 14:07:27,303 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -10 predicate places. [2024-11-10 14:07:27,303 INFO L471 AbstractCegarLoop]: Abstraction has has 325 places, 331 transitions, 694 flow [2024-11-10 14:07:27,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 314.0) internal successors, (942), 3 states have internal predecessors, (942), 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) [2024-11-10 14:07:27,303 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:27,304 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] [2024-11-10 14:07:27,304 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-10 14:07:27,304 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:27,304 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:27,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1880205942, now seen corresponding path program 1 times [2024-11-10 14:07:27,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:27,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935267473] [2024-11-10 14:07:27,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:27,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:27,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:27,343 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:27,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:27,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935267473] [2024-11-10 14:07:27,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935267473] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:27,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2116230510] [2024-11-10 14:07:27,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:27,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:27,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:27,345 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) [2024-11-10 14:07:27,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-10 14:07:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:27,430 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-10 14:07:27,432 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:27,438 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-10 14:07:27,439 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:07:27,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2116230510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:27,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:07:27,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-10 14:07:27,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114304663] [2024-11-10 14:07:27,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:27,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 14:07:27,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:27,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 14:07:27,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:27,458 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 311 out of 361 [2024-11-10 14:07:27,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 331 transitions, 694 flow. Second operand has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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) [2024-11-10 14:07:27,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:27,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 311 of 361 [2024-11-10 14:07:27,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:30,742 INFO L124 PetriNetUnfolderBase]: 5542/26311 cut-off events. [2024-11-10 14:07:30,742 INFO L125 PetriNetUnfolderBase]: For 1994/1994 co-relation queries the response was YES. [2024-11-10 14:07:30,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33815 conditions, 26311 events. 5542/26311 cut-off events. For 1994/1994 co-relation queries the response was YES. Maximal size of possible extension queue 612. Compared 343011 event pairs, 3970 based on Foata normal form. 156/23107 useless extension candidates. Maximal degree in co-relation 33766. Up to 5843 conditions per place. [2024-11-10 14:07:31,050 INFO L140 encePairwiseOnDemand]: 358/361 looper letters, 41 selfloop transitions, 2 changer transitions 0/347 dead transitions. [2024-11-10 14:07:31,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 347 transitions, 827 flow [2024-11-10 14:07:31,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 14:07:31,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-10 14:07:31,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 977 transitions. [2024-11-10 14:07:31,053 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9021237303785781 [2024-11-10 14:07:31,053 INFO L175 Difference]: Start difference. First operand has 325 places, 331 transitions, 694 flow. Second operand 3 states and 977 transitions. [2024-11-10 14:07:31,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 347 transitions, 827 flow [2024-11-10 14:07:31,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 347 transitions, 825 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:31,066 INFO L231 Difference]: Finished difference. Result has 327 places, 332 transitions, 704 flow [2024-11-10 14:07:31,067 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=692, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=704, PETRI_PLACES=327, PETRI_TRANSITIONS=332} [2024-11-10 14:07:31,068 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, -8 predicate places. [2024-11-10 14:07:31,068 INFO L471 AbstractCegarLoop]: Abstraction has has 327 places, 332 transitions, 704 flow [2024-11-10 14:07:31,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 313.3333333333333) internal successors, (940), 3 states have internal predecessors, (940), 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) [2024-11-10 14:07:31,068 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:31,069 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] [2024-11-10 14:07:31,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-10 14:07:31,269 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 [2024-11-10 14:07:31,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:31,271 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:31,271 INFO L85 PathProgramCache]: Analyzing trace with hash -2074516561, now seen corresponding path program 1 times [2024-11-10 14:07:31,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:31,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105836876] [2024-11-10 14:07:31,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:31,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:31,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:31,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105836876] [2024-11-10 14:07:31,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105836876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:31,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1004036762] [2024-11-10 14:07:31,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:31,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:31,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:31,334 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) [2024-11-10 14:07:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-10 14:07:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:31,428 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-10 14:07:31,430 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:31,455 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:31,455 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1004036762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:31,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:31,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2024-11-10 14:07:31,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786221981] [2024-11-10 14:07:31,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:31,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 14:07:31,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:31,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 14:07:31,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-10 14:07:31,542 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 361 [2024-11-10 14:07:31,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 332 transitions, 704 flow. Second operand has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 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) [2024-11-10 14:07:31,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:31,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 361 [2024-11-10 14:07:31,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:33,809 INFO L124 PetriNetUnfolderBase]: 2346/13954 cut-off events. [2024-11-10 14:07:33,809 INFO L125 PetriNetUnfolderBase]: For 1220/1220 co-relation queries the response was YES. [2024-11-10 14:07:33,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16957 conditions, 13954 events. 2346/13954 cut-off events. For 1220/1220 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 168179 event pairs, 1720 based on Foata normal form. 2/12354 useless extension candidates. Maximal degree in co-relation 16857. Up to 2506 conditions per place. [2024-11-10 14:07:33,961 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 28 selfloop transitions, 9 changer transitions 0/340 dead transitions. [2024-11-10 14:07:33,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 340 transitions, 796 flow [2024-11-10 14:07:33,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 14:07:33,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-10 14:07:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2820 transitions. [2024-11-10 14:07:33,964 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8679593721144968 [2024-11-10 14:07:33,964 INFO L175 Difference]: Start difference. First operand has 327 places, 332 transitions, 704 flow. Second operand 9 states and 2820 transitions. [2024-11-10 14:07:33,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 340 transitions, 796 flow [2024-11-10 14:07:33,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 340 transitions, 794 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:33,970 INFO L231 Difference]: Finished difference. Result has 337 places, 338 transitions, 752 flow [2024-11-10 14:07:33,970 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=702, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=752, PETRI_PLACES=337, PETRI_TRANSITIONS=338} [2024-11-10 14:07:33,970 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 2 predicate places. [2024-11-10 14:07:33,971 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 338 transitions, 752 flow [2024-11-10 14:07:33,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 310.9) internal successors, (3109), 10 states have internal predecessors, (3109), 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) [2024-11-10 14:07:33,972 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:33,972 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] [2024-11-10 14:07:33,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-10 14:07:34,172 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 [2024-11-10 14:07:34,172 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2024-11-10 14:07:34,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash -928049775, now seen corresponding path program 2 times [2024-11-10 14:07:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690693087] [2024-11-10 14:07:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:34,271 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:34,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690693087] [2024-11-10 14:07:34,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690693087] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:34,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031031956] [2024-11-10 14:07:34,272 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 14:07:34,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:34,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:34,274 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) [2024-11-10 14:07:34,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-10 14:07:34,366 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-10 14:07:34,366 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 14:07:34,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-10 14:07:34,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:34,393 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 [2024-11-10 14:07:34,405 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 [2024-11-10 14:07:34,425 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:07:34,425 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 [2024-11-10 14:07:34,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-10 14:07:34,448 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 [2024-11-10 14:07:34,468 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-10 14:07:34,468 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 14:07:34,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031031956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:34,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-10 14:07:34,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-11-10 14:07:34,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630641761] [2024-11-10 14:07:34,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:34,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:34,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:34,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:34,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-11-10 14:07:34,675 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 302 out of 361 [2024-11-10 14:07:34,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 338 transitions, 752 flow. Second operand has 6 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 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) [2024-11-10 14:07:34,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:34,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 302 of 361 [2024-11-10 14:07:34,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:40,504 INFO L124 PetriNetUnfolderBase]: 9055/36444 cut-off events. [2024-11-10 14:07:40,505 INFO L125 PetriNetUnfolderBase]: For 3835/3835 co-relation queries the response was YES. [2024-11-10 14:07:40,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49445 conditions, 36444 events. 9055/36444 cut-off events. For 3835/3835 co-relation queries the response was YES. Maximal size of possible extension queue 910. Compared 482453 event pairs, 3595 based on Foata normal form. 0/32520 useless extension candidates. Maximal degree in co-relation 49331. Up to 5325 conditions per place. [2024-11-10 14:07:40,995 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 90 selfloop transitions, 6 changer transitions 0/397 dead transitions. [2024-11-10 14:07:40,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 397 transitions, 1122 flow [2024-11-10 14:07:40,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 14:07:40,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 14:07:40,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1908 transitions. [2024-11-10 14:07:40,998 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8808864265927978 [2024-11-10 14:07:40,998 INFO L175 Difference]: Start difference. First operand has 337 places, 338 transitions, 752 flow. Second operand 6 states and 1908 transitions. [2024-11-10 14:07:40,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 397 transitions, 1122 flow [2024-11-10 14:07:41,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 397 transitions, 1116 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-10 14:07:41,007 INFO L231 Difference]: Finished difference. Result has 340 places, 337 transitions, 756 flow [2024-11-10 14:07:41,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=756, PETRI_PLACES=340, PETRI_TRANSITIONS=337} [2024-11-10 14:07:41,008 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 5 predicate places. [2024-11-10 14:07:41,008 INFO L471 AbstractCegarLoop]: Abstraction has has 340 places, 337 transitions, 756 flow [2024-11-10 14:07:41,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 304.3333333333333) internal successors, (1826), 6 states have internal predecessors, (1826), 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) [2024-11-10 14:07:41,009 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:41,009 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] [2024-11-10 14:07:41,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-10 14:07:41,209 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 [2024-11-10 14:07:41,210 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)] === [2024-11-10 14:07:41,210 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:41,210 INFO L85 PathProgramCache]: Analyzing trace with hash 709343504, now seen corresponding path program 1 times [2024-11-10 14:07:41,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:41,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39029216] [2024-11-10 14:07:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:41,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:41,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39029216] [2024-11-10 14:07:41,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39029216] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 14:07:41,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856458155] [2024-11-10 14:07:41,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:41,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 14:07:41,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 14:07:41,355 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) [2024-11-10 14:07:41,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-10 14:07:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:41,471 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-10 14:07:41,472 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 14:07:41,558 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:41,558 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 14:07:41,664 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2024-11-10 14:07:41,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856458155] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 14:07:41,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 14:07:41,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2024-11-10 14:07:41,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793708462] [2024-11-10 14:07:41,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 14:07:41,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-10 14:07:41,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:41,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-10 14:07:41,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2024-11-10 14:07:41,740 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 309 out of 361 [2024-11-10 14:07:41,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 337 transitions, 756 flow. Second operand has 15 states, 15 states have (on average 311.26666666666665) internal successors, (4669), 15 states have internal predecessors, (4669), 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) [2024-11-10 14:07:41,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:41,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 309 of 361 [2024-11-10 14:07:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 14:07:44,225 INFO L124 PetriNetUnfolderBase]: 2345/13996 cut-off events. [2024-11-10 14:07:44,226 INFO L125 PetriNetUnfolderBase]: For 1264/1264 co-relation queries the response was YES. [2024-11-10 14:07:44,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17058 conditions, 13996 events. 2345/13996 cut-off events. For 1264/1264 co-relation queries the response was YES. Maximal size of possible extension queue 345. Compared 167850 event pairs, 1720 based on Foata normal form. 3/12399 useless extension candidates. Maximal degree in co-relation 16872. Up to 2506 conditions per place. [2024-11-10 14:07:44,384 INFO L140 encePairwiseOnDemand]: 355/361 looper letters, 31 selfloop transitions, 18 changer transitions 0/351 dead transitions. [2024-11-10 14:07:44,385 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 351 transitions, 922 flow [2024-11-10 14:07:44,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-10 14:07:44,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-11-10 14:07:44,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 5614 transitions. [2024-11-10 14:07:44,394 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8639581409664512 [2024-11-10 14:07:44,394 INFO L175 Difference]: Start difference. First operand has 340 places, 337 transitions, 756 flow. Second operand 18 states and 5614 transitions. [2024-11-10 14:07:44,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 351 transitions, 922 flow [2024-11-10 14:07:44,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 351 transitions, 910 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-10 14:07:44,408 INFO L231 Difference]: Finished difference. Result has 356 places, 347 transitions, 850 flow [2024-11-10 14:07:44,409 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=361, PETRI_DIFFERENCE_MINUEND_FLOW=744, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=850, PETRI_PLACES=356, PETRI_TRANSITIONS=347} [2024-11-10 14:07:44,413 INFO L277 CegarLoopForPetriNet]: 335 programPoint places, 21 predicate places. [2024-11-10 14:07:44,413 INFO L471 AbstractCegarLoop]: Abstraction has has 356 places, 347 transitions, 850 flow [2024-11-10 14:07:44,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 311.26666666666665) internal successors, (4669), 15 states have internal predecessors, (4669), 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) [2024-11-10 14:07:44,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:44,415 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] [2024-11-10 14:07:44,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-10 14:07:44,615 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 [2024-11-10 14:07:44,616 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)] === [2024-11-10 14:07:44,616 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:44,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1665238147, now seen corresponding path program 2 times [2024-11-10 14:07:44,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:44,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414334423] [2024-11-10 14:07:44,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:44,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:44,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 14:07:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 14:07:44,677 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 14:07:44,677 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 14:07:44,678 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2024-11-10 14:07:44,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2024-11-10 14:07:44,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2024-11-10 14:07:44,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2024-11-10 14:07:44,678 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2024-11-10 14:07:44,679 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2024-11-10 14:07:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2024-11-10 14:07:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2024-11-10 14:07:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2024-11-10 14:07:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2024-11-10 14:07:44,680 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2024-11-10 14:07:44,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-10 14:07:44,680 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1] [2024-11-10 14:07:44,681 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 14:07:44,681 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-10 14:07:44,716 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 14:07:44,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 405 places, 437 transitions, 914 flow [2024-11-10 14:07:44,764 INFO L124 PetriNetUnfolderBase]: 48/495 cut-off events. [2024-11-10 14:07:44,764 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-10 14:07:44,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521 conditions, 495 events. 48/495 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1867 event pairs, 0 based on Foata normal form. 0/420 useless extension candidates. Maximal degree in co-relation 420. Up to 12 conditions per place. [2024-11-10 14:07:44,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 405 places, 437 transitions, 914 flow [2024-11-10 14:07:44,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 405 places, 437 transitions, 914 flow [2024-11-10 14:07:44,778 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 14:07:44,779 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;@7375f9b9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 14:07:44,779 INFO L334 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2024-11-10 14:07:44,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 14:07:44,781 INFO L124 PetriNetUnfolderBase]: 2/53 cut-off events. [2024-11-10 14:07:44,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 14:07:44,781 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 14:07:44,781 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] [2024-11-10 14:07:44,781 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)] === [2024-11-10 14:07:44,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 14:07:44,782 INFO L85 PathProgramCache]: Analyzing trace with hash 936827518, now seen corresponding path program 1 times [2024-11-10 14:07:44,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 14:07:44,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823673581] [2024-11-10 14:07:44,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 14:07:44,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 14:07:44,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 14:07:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 14:07:44,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 14:07:44,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823673581] [2024-11-10 14:07:44,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823673581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 14:07:44,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 14:07:44,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-10 14:07:44,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737647273] [2024-11-10 14:07:44,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 14:07:44,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-10 14:07:44,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 14:07:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-10 14:07:44,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-10 14:07:45,135 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 437 [2024-11-10 14:07:45,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 437 transitions, 914 flow. Second operand has 6 states, 6 states have (on average 352.5) internal successors, (2115), 6 states have internal predecessors, (2115), 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) [2024-11-10 14:07:45,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 14:07:45,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 437 [2024-11-10 14:07:45,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand