./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-data-race.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/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 /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.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 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 15:05:02,670 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 15:05:02,737 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-10-24 15:05:02,743 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 15:05:02,744 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 15:05:02,775 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 15:05:02,776 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 15:05:02,776 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 15:05:02,778 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 15:05:02,779 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 15:05:02,781 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 15:05:02,781 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 15:05:02,782 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 15:05:02,782 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 15:05:02,783 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 15:05:02,786 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 15:05:02,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 15:05:02,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 15:05:02,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 15:05:02,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 15:05:02,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 15:05:02,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 15:05:02,788 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-10-24 15:05:02,789 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 15:05:02,789 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 15:05:02,789 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 15:05:02,789 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 15:05:02,789 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 15:05:02,790 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 15:05:02,790 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 15:05:02,790 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 15:05:02,790 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:05:02,791 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 15:05:02,791 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 15:05:02,791 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 15:05:02,793 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 15:05:02,794 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 15:05:02,794 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 15:05:02,794 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 15:05:02,794 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 15:05:02,794 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 15:05:02,795 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a0803bc25bdee4cec741e6286f7294c3704d91bb65e5684830693d517eafafb [2024-10-24 15:05:03,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 15:05:03,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 15:05:03,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 15:05:03,126 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 15:05:03,127 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 15:05:03,128 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2024-10-24 15:05:04,605 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 15:05:04,887 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 15:05:04,892 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/12_fmaxsymopt_cas.i [2024-10-24 15:05:04,908 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4af6372/7d62acdb0d1843da885a3b274fca5487/FLAG4562e4213 [2024-10-24 15:05:05,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f4af6372/7d62acdb0d1843da885a3b274fca5487 [2024-10-24 15:05:05,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 15:05:05,181 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 15:05:05,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:05,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 15:05:05,188 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 15:05:05,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,189 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674d9062 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05, skipping insertion in model container [2024-10-24 15:05:05,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 15:05:05,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:05,618 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 15:05:05,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 15:05:05,736 INFO L204 MainTranslator]: Completed translation [2024-10-24 15:05:05,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05 WrapperNode [2024-10-24 15:05:05,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 15:05:05,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:05,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 15:05:05,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 15:05:05,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,766 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,808 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 147 [2024-10-24 15:05:05,812 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 15:05:05,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 15:05:05,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 15:05:05,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 15:05:05,827 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,827 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,830 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,834 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,858 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,864 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,865 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,868 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 15:05:05,872 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 15:05:05,872 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 15:05:05,872 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 15:05:05,877 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (1/1) ... [2024-10-24 15:05:05,882 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 15:05:05,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 15:05:05,912 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) [2024-10-24 15:05:05,916 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 [2024-10-24 15:05:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-10-24 15:05:05,968 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-10-24 15:05:05,968 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-10-24 15:05:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-10-24 15:05:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 15:05:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 15:05:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 15:05:05,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-10-24 15:05:05,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 15:05:05,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 15:05:05,971 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-24 15:05:06,141 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 15:05:06,146 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 15:05:06,485 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-24 15:05:06,485 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 15:05:06,647 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 15:05:06,647 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-24 15:05:06,648 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:06 BoogieIcfgContainer [2024-10-24 15:05:06,648 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 15:05:06,652 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 15:05:06,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 15:05:06,656 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 15:05:06,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:05:05" (1/3) ... [2024-10-24 15:05:06,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b6bfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:06, skipping insertion in model container [2024-10-24 15:05:06,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:05:05" (2/3) ... [2024-10-24 15:05:06,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28b6bfca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:05:06, skipping insertion in model container [2024-10-24 15:05:06,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:05:06" (3/3) ... [2024-10-24 15:05:06,660 INFO L112 eAbstractionObserver]: Analyzing ICFG 12_fmaxsymopt_cas.i [2024-10-24 15:05:06,678 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 15:05:06,678 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2024-10-24 15:05:06,679 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-24 15:05:06,763 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:06,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 128 transitions, 260 flow [2024-10-24 15:05:06,876 INFO L124 PetriNetUnfolderBase]: 13/137 cut-off events. [2024-10-24 15:05:06,876 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:06,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 137 events. 13/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 211 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 106. Up to 4 conditions per place. [2024-10-24 15:05:06,883 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 128 transitions, 260 flow [2024-10-24 15:05:06,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 128 transitions, 260 flow [2024-10-24 15:05:06,897 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:06,905 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;@6c0ea3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:06,905 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-10-24 15:05:06,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:06,916 INFO L124 PetriNetUnfolderBase]: 2/48 cut-off events. [2024-10-24 15:05:06,916 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-10-24 15:05:06,919 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:06,920 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:06,921 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-10-24 15:05:06,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:06,928 INFO L85 PathProgramCache]: Analyzing trace with hash -874353137, now seen corresponding path program 1 times [2024-10-24 15:05:06,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:06,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643427524] [2024-10-24 15:05:06,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:06,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,079 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:07,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,139 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:07,142 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:07,143 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-10-24 15:05:07,145 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-10-24 15:05:07,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-10-24 15:05:07,146 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-10-24 15:05:07,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-10-24 15:05:07,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-10-24 15:05:07,147 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-10-24 15:05:07,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-10-24 15:05:07,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-10-24 15:05:07,148 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-10-24 15:05:07,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-10-24 15:05:07,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-10-24 15:05:07,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-10-24 15:05:07,149 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-10-24 15:05:07,150 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-10-24 15:05:07,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-10-24 15:05:07,151 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-10-24 15:05:07,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 15:05:07,152 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:07,157 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:07,158 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-10-24 15:05:07,331 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:07,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 224 transitions, 458 flow [2024-10-24 15:05:07,417 INFO L124 PetriNetUnfolderBase]: 25/244 cut-off events. [2024-10-24 15:05:07,418 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:07,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 244 events. 25/244 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 680 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 201. Up to 6 conditions per place. [2024-10-24 15:05:07,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 224 transitions, 458 flow [2024-10-24 15:05:07,426 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 224 transitions, 458 flow [2024-10-24 15:05:07,427 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:07,428 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;@6c0ea3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:07,428 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-10-24 15:05:07,438 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:07,439 INFO L124 PetriNetUnfolderBase]: 4/74 cut-off events. [2024-10-24 15:05:07,439 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-10-24 15:05:07,439 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:07,439 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:07,440 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-10-24 15:05:07,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:07,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1830969534, now seen corresponding path program 1 times [2024-10-24 15:05:07,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:07,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140159548] [2024-10-24 15:05:07,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:07,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,469 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:07,500 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:07,500 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2024-10-24 15:05:07,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2024-10-24 15:05:07,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2024-10-24 15:05:07,501 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2024-10-24 15:05:07,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2024-10-24 15:05:07,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2024-10-24 15:05:07,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2024-10-24 15:05:07,502 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2024-10-24 15:05:07,503 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2024-10-24 15:05:07,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2024-10-24 15:05:07,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2024-10-24 15:05:07,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2024-10-24 15:05:07,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2024-10-24 15:05:07,504 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2024-10-24 15:05:07,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2024-10-24 15:05:07,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2024-10-24 15:05:07,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2024-10-24 15:05:07,505 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2024-10-24 15:05:07,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2024-10-24 15:05:07,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2024-10-24 15:05:07,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2024-10-24 15:05:07,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2024-10-24 15:05:07,506 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2024-10-24 15:05:07,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2024-10-24 15:05:07,508 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2024-10-24 15:05:07,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 15:05:07,508 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:07,509 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:07,509 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-10-24 15:05:07,620 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:07,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 293 places, 320 transitions, 658 flow [2024-10-24 15:05:07,769 INFO L124 PetriNetUnfolderBase]: 37/351 cut-off events. [2024-10-24 15:05:07,769 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:07,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 364 conditions, 351 events. 37/351 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1239 event pairs, 0 based on Foata normal form. 0/286 useless extension candidates. Maximal degree in co-relation 296. Up to 8 conditions per place. [2024-10-24 15:05:07,780 INFO L82 GeneralOperation]: Start removeDead. Operand has 293 places, 320 transitions, 658 flow [2024-10-24 15:05:07,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 293 places, 320 transitions, 658 flow [2024-10-24 15:05:07,791 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:07,793 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;@6c0ea3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:07,794 INFO L334 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2024-10-24 15:05:07,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:07,813 INFO L124 PetriNetUnfolderBase]: 7/109 cut-off events. [2024-10-24 15:05:07,813 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-10-24 15:05:07,813 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:07,814 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:07,814 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 29 more)] === [2024-10-24 15:05:07,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:07,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1075182354, now seen corresponding path program 1 times [2024-10-24 15:05:07,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434559399] [2024-10-24 15:05:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:07,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:07,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,866 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:07,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:07,893 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:07,893 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2024-10-24 15:05:07,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 33 remaining) [2024-10-24 15:05:07,893 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 33 remaining) [2024-10-24 15:05:07,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 33 remaining) [2024-10-24 15:05:07,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 33 remaining) [2024-10-24 15:05:07,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (27 of 33 remaining) [2024-10-24 15:05:07,894 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 33 remaining) [2024-10-24 15:05:07,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 33 remaining) [2024-10-24 15:05:07,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 33 remaining) [2024-10-24 15:05:07,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 33 remaining) [2024-10-24 15:05:07,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 33 remaining) [2024-10-24 15:05:07,895 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 33 remaining) [2024-10-24 15:05:07,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 33 remaining) [2024-10-24 15:05:07,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 33 remaining) [2024-10-24 15:05:07,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 33 remaining) [2024-10-24 15:05:07,896 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 33 remaining) [2024-10-24 15:05:07,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 33 remaining) [2024-10-24 15:05:07,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 33 remaining) [2024-10-24 15:05:07,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 33 remaining) [2024-10-24 15:05:07,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 33 remaining) [2024-10-24 15:05:07,897 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 33 remaining) [2024-10-24 15:05:07,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 33 remaining) [2024-10-24 15:05:07,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 33 remaining) [2024-10-24 15:05:07,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 33 remaining) [2024-10-24 15:05:07,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 33 remaining) [2024-10-24 15:05:07,898 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 33 remaining) [2024-10-24 15:05:07,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 33 remaining) [2024-10-24 15:05:07,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 33 remaining) [2024-10-24 15:05:07,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 33 remaining) [2024-10-24 15:05:07,899 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 33 remaining) [2024-10-24 15:05:07,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 33 remaining) [2024-10-24 15:05:07,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 33 remaining) [2024-10-24 15:05:07,900 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 33 remaining) [2024-10-24 15:05:07,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 15:05:07,900 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-10-24 15:05:07,902 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:07,902 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-10-24 15:05:08,045 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:08,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 380 places, 416 transitions, 860 flow [2024-10-24 15:05:08,175 INFO L124 PetriNetUnfolderBase]: 49/458 cut-off events. [2024-10-24 15:05:08,175 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:05:08,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 458 events. 49/458 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1851 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 391. Up to 10 conditions per place. [2024-10-24 15:05:08,188 INFO L82 GeneralOperation]: Start removeDead. Operand has 380 places, 416 transitions, 860 flow [2024-10-24 15:05:08,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 380 places, 416 transitions, 860 flow [2024-10-24 15:05:08,198 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:08,198 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;@6c0ea3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:08,199 INFO L334 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2024-10-24 15:05:08,214 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:08,215 INFO L124 PetriNetUnfolderBase]: 11/162 cut-off events. [2024-10-24 15:05:08,215 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-10-24 15:05:08,215 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:08,215 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] [2024-10-24 15:05:08,215 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-24 15:05:08,216 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:08,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1365581852, now seen corresponding path program 1 times [2024-10-24 15:05:08,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:08,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018940806] [2024-10-24 15:05:08,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:08,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:08,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:08,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:08,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018940806] [2024-10-24 15:05:08,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018940806] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:08,960 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:08,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:08,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726268476] [2024-10-24 15:05:08,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:08,972 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:09,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:09,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:10,044 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 350 out of 416 [2024-10-24 15:05:10,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 416 transitions, 860 flow. Second operand has 6 states, 6 states have (on average 351.6666666666667) internal successors, (2110), 6 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:10,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:10,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 350 of 416 [2024-10-24 15:05:10,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:13,014 INFO L124 PetriNetUnfolderBase]: 748/7569 cut-off events. [2024-10-24 15:05:13,014 INFO L125 PetriNetUnfolderBase]: For 1045/1045 co-relation queries the response was YES. [2024-10-24 15:05:13,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8740 conditions, 7569 events. 748/7569 cut-off events. For 1045/1045 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 81464 event pairs, 239 based on Foata normal form. 1636/8216 useless extension candidates. Maximal degree in co-relation 3490. Up to 557 conditions per place. [2024-10-24 15:05:13,224 INFO L140 encePairwiseOnDemand]: 364/416 looper letters, 31 selfloop transitions, 18 changer transitions 0/392 dead transitions. [2024-10-24 15:05:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 392 transitions, 994 flow [2024-10-24 15:05:13,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:13,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:13,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2322 transitions. [2024-10-24 15:05:13,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9302884615384616 [2024-10-24 15:05:13,254 INFO L175 Difference]: Start difference. First operand has 380 places, 416 transitions, 860 flow. Second operand 6 states and 2322 transitions. [2024-10-24 15:05:13,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 392 transitions, 994 flow [2024-10-24 15:05:13,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 392 transitions, 964 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:13,276 INFO L231 Difference]: Finished difference. Result has 362 places, 380 transitions, 872 flow [2024-10-24 15:05:13,279 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=416, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=872, PETRI_PLACES=362, PETRI_TRANSITIONS=380} [2024-10-24 15:05:13,285 INFO L277 CegarLoopForPetriNet]: 380 programPoint places, -18 predicate places. [2024-10-24 15:05:13,286 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 380 transitions, 872 flow [2024-10-24 15:05:13,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 351.6666666666667) internal successors, (2110), 6 states have internal predecessors, (2110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:13,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:13,289 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-10-24 15:05:13,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 15:05:13,289 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 37 more)] === [2024-10-24 15:05:13,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:13,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1994208833, now seen corresponding path program 1 times [2024-10-24 15:05:13,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:13,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030916935] [2024-10-24 15:05:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:13,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:13,314 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-10-24 15:05:13,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-10-24 15:05:13,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-10-24 15:05:13,339 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-10-24 15:05:13,340 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (40 of 41 remaining) [2024-10-24 15:05:13,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (39 of 41 remaining) [2024-10-24 15:05:13,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (38 of 41 remaining) [2024-10-24 15:05:13,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 41 remaining) [2024-10-24 15:05:13,340 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (36 of 41 remaining) [2024-10-24 15:05:13,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (35 of 41 remaining) [2024-10-24 15:05:13,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (34 of 41 remaining) [2024-10-24 15:05:13,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 41 remaining) [2024-10-24 15:05:13,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (32 of 41 remaining) [2024-10-24 15:05:13,341 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (31 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (29 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (28 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (27 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (26 of 41 remaining) [2024-10-24 15:05:13,345 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (25 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (24 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (23 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (22 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (21 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (20 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 41 remaining) [2024-10-24 15:05:13,346 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (17 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (16 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (13 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (11 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (8 of 41 remaining) [2024-10-24 15:05:13,347 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (7 of 41 remaining) [2024-10-24 15:05:13,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (6 of 41 remaining) [2024-10-24 15:05:13,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (5 of 41 remaining) [2024-10-24 15:05:13,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 41 remaining) [2024-10-24 15:05:13,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (3 of 41 remaining) [2024-10-24 15:05:13,348 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 41 remaining) [2024-10-24 15:05:13,350 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (1 of 41 remaining) [2024-10-24 15:05:13,351 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 41 remaining) [2024-10-24 15:05:13,351 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 15:05:13,351 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-10-24 15:05:13,352 WARN L239 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-10-24 15:05:13,352 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-10-24 15:05:13,527 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-10-24 15:05:13,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 467 places, 512 transitions, 1064 flow [2024-10-24 15:05:13,636 INFO L124 PetriNetUnfolderBase]: 61/565 cut-off events. [2024-10-24 15:05:13,637 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-10-24 15:05:13,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 591 conditions, 565 events. 61/565 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2489 event pairs, 0 based on Foata normal form. 0/458 useless extension candidates. Maximal degree in co-relation 486. Up to 12 conditions per place. [2024-10-24 15:05:13,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 467 places, 512 transitions, 1064 flow [2024-10-24 15:05:13,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 467 places, 512 transitions, 1064 flow [2024-10-24 15:05:13,664 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 15:05:13,665 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;@6c0ea3b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 15:05:13,665 INFO L334 AbstractCegarLoop]: Starting to check reachability of 49 error locations. [2024-10-24 15:05:13,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-24 15:05:13,677 INFO L124 PetriNetUnfolderBase]: 11/162 cut-off events. [2024-10-24 15:05:13,677 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-10-24 15:05:13,678 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:13,678 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] [2024-10-24 15:05:13,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-24 15:05:13,678 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:13,679 INFO L85 PathProgramCache]: Analyzing trace with hash 217569830, now seen corresponding path program 1 times [2024-10-24 15:05:13,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:13,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828248104] [2024-10-24 15:05:13,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:13,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:13,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:13,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:13,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:13,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828248104] [2024-10-24 15:05:13,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828248104] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:13,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:13,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:13,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601642885] [2024-10-24 15:05:13,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:13,994 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:13,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:13,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:13,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:15,087 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 512 [2024-10-24 15:05:15,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 512 transitions, 1064 flow. Second operand has 6 states, 6 states have (on average 434.6666666666667) internal successors, (2608), 6 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:15,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:15,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 512 [2024-10-24 15:05:15,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:21,171 INFO L124 PetriNetUnfolderBase]: 1883/16881 cut-off events. [2024-10-24 15:05:21,172 INFO L125 PetriNetUnfolderBase]: For 3507/3507 co-relation queries the response was YES. [2024-10-24 15:05:21,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19927 conditions, 16881 events. 1883/16881 cut-off events. For 3507/3507 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 209101 event pairs, 702 based on Foata normal form. 4660/19332 useless extension candidates. Maximal degree in co-relation 8706. Up to 1468 conditions per place. [2024-10-24 15:05:21,633 INFO L140 encePairwiseOnDemand]: 449/512 looper letters, 37 selfloop transitions, 22 changer transitions 0/484 dead transitions. [2024-10-24 15:05:21,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 484 transitions, 1254 flow [2024-10-24 15:05:21,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 15:05:21,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-24 15:05:21,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2880 transitions. [2024-10-24 15:05:21,642 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9375 [2024-10-24 15:05:21,643 INFO L175 Difference]: Start difference. First operand has 467 places, 512 transitions, 1064 flow. Second operand 6 states and 2880 transitions. [2024-10-24 15:05:21,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 484 transitions, 1254 flow [2024-10-24 15:05:21,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 484 transitions, 1194 flow, removed 30 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:21,660 INFO L231 Difference]: Finished difference. Result has 443 places, 468 transitions, 1072 flow [2024-10-24 15:05:21,661 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=512, PETRI_DIFFERENCE_MINUEND_FLOW=922, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1072, PETRI_PLACES=443, PETRI_TRANSITIONS=468} [2024-10-24 15:05:21,662 INFO L277 CegarLoopForPetriNet]: 467 programPoint places, -24 predicate places. [2024-10-24 15:05:21,662 INFO L471 AbstractCegarLoop]: Abstraction has has 443 places, 468 transitions, 1072 flow [2024-10-24 15:05:21,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 434.6666666666667) internal successors, (2608), 6 states have internal predecessors, (2608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:21,665 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:21,665 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:21,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-24 15:05:21,665 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-24 15:05:21,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 814629656, now seen corresponding path program 1 times [2024-10-24 15:05:21,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:21,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052090598] [2024-10-24 15:05:21,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:21,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:21,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:21,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 15:05:21,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:21,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052090598] [2024-10-24 15:05:21,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052090598] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:21,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:21,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-24 15:05:21,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244364130] [2024-10-24 15:05:21,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:21,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-24 15:05:21,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:21,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-24 15:05:21,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-24 15:05:21,744 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 438 out of 512 [2024-10-24 15:05:21,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 468 transitions, 1072 flow. Second operand has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:21,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 438 of 512 [2024-10-24 15:05:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-24 15:05:27,931 INFO L124 PetriNetUnfolderBase]: 2598/22004 cut-off events. [2024-10-24 15:05:27,931 INFO L125 PetriNetUnfolderBase]: For 3913/7552 co-relation queries the response was YES. [2024-10-24 15:05:28,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27999 conditions, 22004 events. 2598/22004 cut-off events. For 3913/7552 co-relation queries the response was YES. Maximal size of possible extension queue 410. Compared 289488 event pairs, 709 based on Foata normal form. 65/19205 useless extension candidates. Maximal degree in co-relation 26116. Up to 1659 conditions per place. [2024-10-24 15:05:28,882 INFO L140 encePairwiseOnDemand]: 509/512 looper letters, 57 selfloop transitions, 3 changer transitions 0/494 dead transitions. [2024-10-24 15:05:28,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 494 transitions, 1342 flow [2024-10-24 15:05:28,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-24 15:05:28,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-24 15:05:28,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1341 transitions. [2024-10-24 15:05:28,888 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.873046875 [2024-10-24 15:05:28,888 INFO L175 Difference]: Start difference. First operand has 443 places, 468 transitions, 1072 flow. Second operand 3 states and 1341 transitions. [2024-10-24 15:05:28,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 494 transitions, 1342 flow [2024-10-24 15:05:28,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 445 places, 494 transitions, 1342 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-24 15:05:28,910 INFO L231 Difference]: Finished difference. Result has 446 places, 470 transitions, 1097 flow [2024-10-24 15:05:28,911 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=512, PETRI_DIFFERENCE_MINUEND_FLOW=1072, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=468, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=465, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1097, PETRI_PLACES=446, PETRI_TRANSITIONS=470} [2024-10-24 15:05:28,913 INFO L277 CegarLoopForPetriNet]: 467 programPoint places, -21 predicate places. [2024-10-24 15:05:28,913 INFO L471 AbstractCegarLoop]: Abstraction has has 446 places, 470 transitions, 1097 flow [2024-10-24 15:05:28,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 440.0) internal successors, (1320), 3 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:28,916 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-24 15:05:28,917 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 15:05:28,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-24 15:05:28,917 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err7ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 45 more)] === [2024-10-24 15:05:28,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 15:05:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1543629449, now seen corresponding path program 1 times [2024-10-24 15:05:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 15:05:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274840843] [2024-10-24 15:05:28,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 15:05:28,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 15:05:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 15:05:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 15:05:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 15:05:29,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274840843] [2024-10-24 15:05:29,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274840843] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 15:05:29,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 15:05:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 15:05:29,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343450528] [2024-10-24 15:05:29,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 15:05:29,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 15:05:29,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 15:05:29,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 15:05:29,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-10-24 15:05:30,414 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 433 out of 512 [2024-10-24 15:05:30,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 446 places, 470 transitions, 1097 flow. Second operand has 6 states, 6 states have (on average 434.8333333333333) internal successors, (2609), 6 states have internal predecessors, (2609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-24 15:05:30,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-24 15:05:30,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 433 of 512 [2024-10-24 15:05:30,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand