./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.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 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 23:13:32,829 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 23:13:32,883 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2024-11-16 23:13:32,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 23:13:32,889 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 23:13:32,911 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 23:13:32,912 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 23:13:32,912 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 23:13:32,913 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 23:13:32,914 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 23:13:32,915 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 23:13:32,915 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 23:13:32,915 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 23:13:32,916 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 23:13:32,916 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 23:13:32,916 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 23:13:32,917 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 23:13:32,917 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 23:13:32,917 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 23:13:32,917 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 23:13:32,917 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 23:13:32,918 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 23:13:32,918 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2024-11-16 23:13:32,918 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 23:13:32,919 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-16 23:13:32,919 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 23:13:32,919 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 23:13:32,919 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 23:13:32,919 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 23:13:32,920 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 23:13:32,920 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 23:13:32,920 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:32,920 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 23:13:32,921 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 23:13:32,921 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 23:13:32,921 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 23:13:32,921 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 23:13:32,922 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 23:13:32,922 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 23:13:32,922 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 23:13:32,922 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 23:13:32,927 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44a70169ef8abd67c211072db1308f16df00422231dd8f14aa88bc39d0b023bb [2024-11-16 23:13:33,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 23:13:33,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 23:13:33,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 23:13:33,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 23:13:33,158 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 23:13:33,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-16 23:13:34,363 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 23:13:34,588 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 23:13:34,589 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-zero.i [2024-11-16 23:13:34,603 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45121ac84/311240d70eaa4c098eff1f49c9e2bbea/FLAG539265bd2 [2024-11-16 23:13:34,616 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45121ac84/311240d70eaa4c098eff1f49c9e2bbea [2024-11-16 23:13:34,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 23:13:34,619 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 23:13:34,622 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:34,622 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 23:13:34,627 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 23:13:34,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:34" (1/1) ... [2024-11-16 23:13:34,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14c656d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:34, skipping insertion in model container [2024-11-16 23:13:34,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:13:34" (1/1) ... [2024-11-16 23:13:34,661 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 23:13:34,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:34,932 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 23:13:34,973 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 23:13:35,011 INFO L204 MainTranslator]: Completed translation [2024-11-16 23:13:35,011 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35 WrapperNode [2024-11-16 23:13:35,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 23:13:35,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:35,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 23:13:35,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 23:13:35,018 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,049 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 91 [2024-11-16 23:13:35,050 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 23:13:35,050 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 23:13:35,050 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 23:13:35,050 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 23:13:35,058 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,061 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,061 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,067 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,067 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,073 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,074 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,080 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 23:13:35,080 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 23:13:35,081 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 23:13:35,081 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 23:13:35,081 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (1/1) ... [2024-11-16 23:13:35,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 23:13:35,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 23:13:35,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 23:13:35,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-16 23:13:35,163 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 23:13:35,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 23:13:35,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 23:13:35,166 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 23:13:35,274 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 23:13:35,276 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 23:13:35,430 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 23:13:35,431 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 23:13:35,450 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 23:13:35,451 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 23:13:35,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:35 BoogieIcfgContainer [2024-11-16 23:13:35,451 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 23:13:35,453 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 23:13:35,453 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 23:13:35,458 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 23:13:35,458 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:13:34" (1/3) ... [2024-11-16 23:13:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52be0e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:35, skipping insertion in model container [2024-11-16 23:13:35,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:13:35" (2/3) ... [2024-11-16 23:13:35,459 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52be0e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:13:35, skipping insertion in model container [2024-11-16 23:13:35,459 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 11:13:35" (3/3) ... [2024-11-16 23:13:35,460 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-zero.i [2024-11-16 23:13:35,475 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 23:13:35,475 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2024-11-16 23:13:35,475 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 23:13:35,545 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:35,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 224 flow [2024-11-16 23:13:35,621 INFO L124 PetriNetUnfolderBase]: 10/120 cut-off events. [2024-11-16 23:13:35,621 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:35,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124 conditions, 120 events. 10/120 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 144 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2024-11-16 23:13:35,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 110 transitions, 224 flow [2024-11-16 23:13:35,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 110 transitions, 224 flow [2024-11-16 23:13:35,637 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:35,642 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;@44e7c1eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:35,643 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2024-11-16 23:13:35,653 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:35,653 INFO L124 PetriNetUnfolderBase]: 2/55 cut-off events. [2024-11-16 23:13:35,653 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 23:13:35,653 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:35,654 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] [2024-11-16 23:13:35,655 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2024-11-16 23:13:35,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:35,660 INFO L85 PathProgramCache]: Analyzing trace with hash 885410005, now seen corresponding path program 1 times [2024-11-16 23:13:35,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:35,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229690976] [2024-11-16 23:13:35,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:35,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:35,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:35,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:35,831 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:35,832 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:35,833 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2024-11-16 23:13:35,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2024-11-16 23:13:35,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2024-11-16 23:13:35,835 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2024-11-16 23:13:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2024-11-16 23:13:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2024-11-16 23:13:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2024-11-16 23:13:35,836 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2024-11-16 23:13:35,837 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2024-11-16 23:13:35,837 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 23:13:35,838 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-16 23:13:35,841 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:35,841 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 23:13:35,895 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:35,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 182 transitions, 374 flow [2024-11-16 23:13:35,963 INFO L124 PetriNetUnfolderBase]: 19/204 cut-off events. [2024-11-16 23:13:35,963 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 23:13:35,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 204 events. 19/204 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 458 event pairs, 0 based on Foata normal form. 0/174 useless extension candidates. Maximal degree in co-relation 154. Up to 6 conditions per place. [2024-11-16 23:13:35,966 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 182 transitions, 374 flow [2024-11-16 23:13:35,970 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 182 transitions, 374 flow [2024-11-16 23:13:35,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:35,972 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;@44e7c1eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:35,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2024-11-16 23:13:35,993 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:35,993 INFO L124 PetriNetUnfolderBase]: 4/86 cut-off events. [2024-11-16 23:13:35,993 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 23:13:35,994 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:35,994 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] [2024-11-16 23:13:35,994 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2024-11-16 23:13:35,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:35,995 INFO L85 PathProgramCache]: Analyzing trace with hash -153760978, now seen corresponding path program 1 times [2024-11-16 23:13:35,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:35,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818996242] [2024-11-16 23:13:35,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:35,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:36,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:36,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:36,061 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:36,061 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:36,061 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2024-11-16 23:13:36,061 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2024-11-16 23:13:36,062 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2024-11-16 23:13:36,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2024-11-16 23:13:36,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2024-11-16 23:13:36,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2024-11-16 23:13:36,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2024-11-16 23:13:36,063 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2024-11-16 23:13:36,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 23:13:36,063 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-16 23:13:36,064 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:36,064 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 23:13:36,111 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:36,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 254 transitions, 526 flow [2024-11-16 23:13:36,162 INFO L124 PetriNetUnfolderBase]: 28/288 cut-off events. [2024-11-16 23:13:36,162 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-16 23:13:36,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 301 conditions, 288 events. 28/288 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 858 event pairs, 0 based on Foata normal form. 0/244 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2024-11-16 23:13:36,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 254 transitions, 526 flow [2024-11-16 23:13:36,170 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 236 places, 254 transitions, 526 flow [2024-11-16 23:13:36,171 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:36,172 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;@44e7c1eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:36,172 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2024-11-16 23:13:36,183 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:36,183 INFO L124 PetriNetUnfolderBase]: 7/126 cut-off events. [2024-11-16 23:13:36,183 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 23:13:36,184 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:36,188 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] [2024-11-16 23:13:36,188 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-16 23:13:36,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:36,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1233698717, now seen corresponding path program 1 times [2024-11-16 23:13:36,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:36,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716987043] [2024-11-16 23:13:36,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:36,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:36,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716987043] [2024-11-16 23:13:36,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716987043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:36,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:36,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:13:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060838440] [2024-11-16 23:13:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:36,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:13:36,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:36,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:13:36,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:13:36,378 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 254 [2024-11-16 23:13:36,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 254 transitions, 526 flow. Second operand has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:36,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:36,383 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 254 [2024-11-16 23:13:36,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:36,521 INFO L124 PetriNetUnfolderBase]: 94/1030 cut-off events. [2024-11-16 23:13:36,522 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2024-11-16 23:13:36,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1163 conditions, 1030 events. 94/1030 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6390 event pairs, 42 based on Foata normal form. 207/1102 useless extension candidates. Maximal degree in co-relation 357. Up to 82 conditions per place. [2024-11-16 23:13:36,533 INFO L140 encePairwiseOnDemand]: 240/254 looper letters, 9 selfloop transitions, 0 changer transitions 0/231 dead transitions. [2024-11-16 23:13:36,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 231 transitions, 498 flow [2024-11-16 23:13:36,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:13:36,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 23:13:36,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 479 transitions. [2024-11-16 23:13:36,546 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9429133858267716 [2024-11-16 23:13:36,549 INFO L175 Difference]: Start difference. First operand has 236 places, 254 transitions, 526 flow. Second operand 2 states and 479 transitions. [2024-11-16 23:13:36,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 231 transitions, 498 flow [2024-11-16 23:13:36,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 231 transitions, 496 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:36,557 INFO L231 Difference]: Finished difference. Result has 227 places, 231 transitions, 478 flow [2024-11-16 23:13:36,559 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=254, PETRI_DIFFERENCE_MINUEND_FLOW=478, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=478, PETRI_PLACES=227, PETRI_TRANSITIONS=231} [2024-11-16 23:13:36,561 INFO L277 CegarLoopForPetriNet]: 236 programPoint places, -9 predicate places. [2024-11-16 23:13:36,562 INFO L471 AbstractCegarLoop]: Abstraction has has 227 places, 231 transitions, 478 flow [2024-11-16 23:13:36,563 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 229.5) internal successors, (459), 2 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:36,563 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:36,563 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] [2024-11-16 23:13:36,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 23:13:36,563 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2024-11-16 23:13:36,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:36,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1783987294, now seen corresponding path program 1 times [2024-11-16 23:13:36,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:36,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537586648] [2024-11-16 23:13:36,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:36,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:36,595 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:36,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:36,625 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:36,625 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2024-11-16 23:13:36,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2024-11-16 23:13:36,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2024-11-16 23:13:36,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2024-11-16 23:13:36,625 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2024-11-16 23:13:36,626 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2024-11-16 23:13:36,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2024-11-16 23:13:36,627 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2024-11-16 23:13:36,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 23:13:36,627 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-16 23:13:36,627 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:36,627 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-16 23:13:36,670 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:36,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 326 transitions, 680 flow [2024-11-16 23:13:36,714 INFO L124 PetriNetUnfolderBase]: 37/372 cut-off events. [2024-11-16 23:13:36,714 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-16 23:13:36,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 372 events. 37/372 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1281 event pairs, 0 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 296. Up to 10 conditions per place. [2024-11-16 23:13:36,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 326 transitions, 680 flow [2024-11-16 23:13:36,745 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 302 places, 326 transitions, 680 flow [2024-11-16 23:13:36,746 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:36,747 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;@44e7c1eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:36,749 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2024-11-16 23:13:36,767 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:36,768 INFO L124 PetriNetUnfolderBase]: 7/126 cut-off events. [2024-11-16 23:13:36,768 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 23:13:36,768 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:36,768 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] [2024-11-16 23:13:36,768 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-16 23:13:36,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:36,769 INFO L85 PathProgramCache]: Analyzing trace with hash -46549213, now seen corresponding path program 1 times [2024-11-16 23:13:36,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:36,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193590160] [2024-11-16 23:13:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:36,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:36,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:36,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:36,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:36,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193590160] [2024-11-16 23:13:36,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193590160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:36,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:36,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:13:36,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83687145] [2024-11-16 23:13:36,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:36,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:13:36,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:36,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:13:36,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:13:36,854 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 292 out of 326 [2024-11-16 23:13:36,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 326 transitions, 680 flow. Second operand has 2 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:36,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:36,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 292 of 326 [2024-11-16 23:13:36,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:37,352 INFO L124 PetriNetUnfolderBase]: 364/3181 cut-off events. [2024-11-16 23:13:37,353 INFO L125 PetriNetUnfolderBase]: For 496/496 co-relation queries the response was YES. [2024-11-16 23:13:37,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3693 conditions, 3181 events. 364/3181 cut-off events. For 496/496 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 27893 event pairs, 204 based on Foata normal form. 762/3526 useless extension candidates. Maximal degree in co-relation 1149. Up to 325 conditions per place. [2024-11-16 23:13:37,394 INFO L140 encePairwiseOnDemand]: 308/326 looper letters, 12 selfloop transitions, 0 changer transitions 0/297 dead transitions. [2024-11-16 23:13:37,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 297 transitions, 646 flow [2024-11-16 23:13:37,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:13:37,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 23:13:37,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 614 transitions. [2024-11-16 23:13:37,398 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.941717791411043 [2024-11-16 23:13:37,399 INFO L175 Difference]: Start difference. First operand has 302 places, 326 transitions, 680 flow. Second operand 2 states and 614 transitions. [2024-11-16 23:13:37,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 297 transitions, 646 flow [2024-11-16 23:13:37,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 297 transitions, 640 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:37,408 INFO L231 Difference]: Finished difference. Result has 291 places, 297 transitions, 616 flow [2024-11-16 23:13:37,410 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=616, PETRI_PLACES=291, PETRI_TRANSITIONS=297} [2024-11-16 23:13:37,411 INFO L277 CegarLoopForPetriNet]: 302 programPoint places, -11 predicate places. [2024-11-16 23:13:37,411 INFO L471 AbstractCegarLoop]: Abstraction has has 291 places, 297 transitions, 616 flow [2024-11-16 23:13:37,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 293.5) internal successors, (587), 2 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,412 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:37,412 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] [2024-11-16 23:13:37,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 23:13:37,413 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-16 23:13:37,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:37,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1473562231, now seen corresponding path program 1 times [2024-11-16 23:13:37,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:37,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600973433] [2024-11-16 23:13:37,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:37,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:37,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:37,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:37,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:37,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600973433] [2024-11-16 23:13:37,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600973433] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:37,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:37,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:37,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260673081] [2024-11-16 23:13:37,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:37,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:37,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:37,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:37,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:37,529 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 285 out of 326 [2024-11-16 23:13:37,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 297 transitions, 616 flow. Second operand has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:37,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:37,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 285 of 326 [2024-11-16 23:13:37,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:38,634 INFO L124 PetriNetUnfolderBase]: 1175/7811 cut-off events. [2024-11-16 23:13:38,635 INFO L125 PetriNetUnfolderBase]: For 691/691 co-relation queries the response was YES. [2024-11-16 23:13:38,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9421 conditions, 7811 events. 1175/7811 cut-off events. For 691/691 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 85744 event pairs, 690 based on Foata normal form. 40/6738 useless extension candidates. Maximal degree in co-relation 9414. Up to 1091 conditions per place. [2024-11-16 23:13:38,720 INFO L140 encePairwiseOnDemand]: 323/326 looper letters, 27 selfloop transitions, 2 changer transitions 0/307 dead transitions. [2024-11-16 23:13:38,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 307 transitions, 709 flow [2024-11-16 23:13:38,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:38,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:38,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 885 transitions. [2024-11-16 23:13:38,723 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9049079754601227 [2024-11-16 23:13:38,723 INFO L175 Difference]: Start difference. First operand has 291 places, 297 transitions, 616 flow. Second operand 3 states and 885 transitions. [2024-11-16 23:13:38,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 307 transitions, 709 flow [2024-11-16 23:13:38,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 307 transitions, 709 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:38,729 INFO L231 Difference]: Finished difference. Result has 294 places, 298 transitions, 628 flow [2024-11-16 23:13:38,730 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=628, PETRI_PLACES=294, PETRI_TRANSITIONS=298} [2024-11-16 23:13:38,730 INFO L277 CegarLoopForPetriNet]: 302 programPoint places, -8 predicate places. [2024-11-16 23:13:38,731 INFO L471 AbstractCegarLoop]: Abstraction has has 294 places, 298 transitions, 628 flow [2024-11-16 23:13:38,731 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 287.3333333333333) internal successors, (862), 3 states have internal predecessors, (862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:38,731 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:38,731 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] [2024-11-16 23:13:38,732 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 23:13:38,732 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-16 23:13:38,732 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:38,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2131939186, now seen corresponding path program 1 times [2024-11-16 23:13:38,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:38,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545162188] [2024-11-16 23:13:38,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:38,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:38,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:39,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:39,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:39,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545162188] [2024-11-16 23:13:39,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545162188] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:39,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:39,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:39,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870391589] [2024-11-16 23:13:39,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:39,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:39,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:39,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:39,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:39,387 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 280 out of 326 [2024-11-16 23:13:39,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 298 transitions, 628 flow. Second operand has 6 states, 6 states have (on average 281.6666666666667) internal successors, (1690), 6 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:39,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:39,390 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 280 of 326 [2024-11-16 23:13:39,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:40,848 INFO L124 PetriNetUnfolderBase]: 1956/10415 cut-off events. [2024-11-16 23:13:40,849 INFO L125 PetriNetUnfolderBase]: For 1335/1335 co-relation queries the response was YES. [2024-11-16 23:13:40,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13469 conditions, 10415 events. 1956/10415 cut-off events. For 1335/1335 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 116805 event pairs, 609 based on Foata normal form. 0/9101 useless extension candidates. Maximal degree in co-relation 13460. Up to 971 conditions per place. [2024-11-16 23:13:40,964 INFO L140 encePairwiseOnDemand]: 320/326 looper letters, 54 selfloop transitions, 6 changer transitions 0/333 dead transitions. [2024-11-16 23:13:40,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 333 transitions, 878 flow [2024-11-16 23:13:40,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:40,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1740 transitions. [2024-11-16 23:13:40,968 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8895705521472392 [2024-11-16 23:13:40,968 INFO L175 Difference]: Start difference. First operand has 294 places, 298 transitions, 628 flow. Second operand 6 states and 1740 transitions. [2024-11-16 23:13:40,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 333 transitions, 878 flow [2024-11-16 23:13:40,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 333 transitions, 876 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:40,974 INFO L231 Difference]: Finished difference. Result has 297 places, 297 transitions, 636 flow [2024-11-16 23:13:40,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=326, PETRI_DIFFERENCE_MINUEND_FLOW=624, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=636, PETRI_PLACES=297, PETRI_TRANSITIONS=297} [2024-11-16 23:13:40,975 INFO L277 CegarLoopForPetriNet]: 302 programPoint places, -5 predicate places. [2024-11-16 23:13:40,975 INFO L471 AbstractCegarLoop]: Abstraction has has 297 places, 297 transitions, 636 flow [2024-11-16 23:13:40,976 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 281.6666666666667) internal successors, (1690), 6 states have internal predecessors, (1690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:40,976 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:40,976 INFO L204 CegarLoopForPetriNet]: trace histogram [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] [2024-11-16 23:13:40,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 23:13:40,976 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2024-11-16 23:13:40,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:40,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1821358693, now seen corresponding path program 1 times [2024-11-16 23:13:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:40,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51717435] [2024-11-16 23:13:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:40,994 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 23:13:41,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 23:13:41,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 23:13:41,011 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 23:13:41,011 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2024-11-16 23:13:41,012 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2024-11-16 23:13:41,013 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2024-11-16 23:13:41,014 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2024-11-16 23:13:41,014 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 23:13:41,015 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2024-11-16 23:13:41,015 WARN L244 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 23:13:41,015 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2024-11-16 23:13:41,063 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-16 23:13:41,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 398 transitions, 836 flow [2024-11-16 23:13:41,134 INFO L124 PetriNetUnfolderBase]: 46/456 cut-off events. [2024-11-16 23:13:41,134 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2024-11-16 23:13:41,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 456 events. 46/456 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1697 event pairs, 0 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 385. Up to 12 conditions per place. [2024-11-16 23:13:41,140 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 398 transitions, 836 flow [2024-11-16 23:13:41,144 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 368 places, 398 transitions, 836 flow [2024-11-16 23:13:41,145 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 23:13:41,145 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;@44e7c1eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 23:13:41,145 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2024-11-16 23:13:41,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 23:13:41,155 INFO L124 PetriNetUnfolderBase]: 7/129 cut-off events. [2024-11-16 23:13:41,155 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2024-11-16 23:13:41,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:41,155 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] [2024-11-16 23:13:41,155 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:13:41,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:41,156 INFO L85 PathProgramCache]: Analyzing trace with hash -600396907, now seen corresponding path program 1 times [2024-11-16 23:13:41,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:41,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173208373] [2024-11-16 23:13:41,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:41,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:41,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:41,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:41,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173208373] [2024-11-16 23:13:41,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173208373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:41,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:41,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:13:41,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263484141] [2024-11-16 23:13:41,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:41,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 23:13:41,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:41,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 23:13:41,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 23:13:41,178 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 398 [2024-11-16 23:13:41,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 398 transitions, 836 flow. Second operand has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:41,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:41,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 398 [2024-11-16 23:13:41,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:42,800 INFO L124 PetriNetUnfolderBase]: 1336/9796 cut-off events. [2024-11-16 23:13:42,800 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2024-11-16 23:13:42,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11686 conditions, 9796 events. 1336/9796 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 246. Compared 110465 event pairs, 852 based on Foata normal form. 2823/11356 useless extension candidates. Maximal degree in co-relation 3704. Up to 1216 conditions per place. [2024-11-16 23:13:43,034 INFO L140 encePairwiseOnDemand]: 376/398 looper letters, 15 selfloop transitions, 0 changer transitions 0/363 dead transitions. [2024-11-16 23:13:43,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 363 transitions, 796 flow [2024-11-16 23:13:43,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 23:13:43,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 23:13:43,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 749 transitions. [2024-11-16 23:13:43,036 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9409547738693468 [2024-11-16 23:13:43,036 INFO L175 Difference]: Start difference. First operand has 368 places, 398 transitions, 836 flow. Second operand 2 states and 749 transitions. [2024-11-16 23:13:43,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 363 transitions, 796 flow [2024-11-16 23:13:43,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 363 transitions, 784 flow, removed 6 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:43,041 INFO L231 Difference]: Finished difference. Result has 355 places, 363 transitions, 754 flow [2024-11-16 23:13:43,042 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=754, PETRI_PLACES=355, PETRI_TRANSITIONS=363} [2024-11-16 23:13:43,042 INFO L277 CegarLoopForPetriNet]: 368 programPoint places, -13 predicate places. [2024-11-16 23:13:43,042 INFO L471 AbstractCegarLoop]: Abstraction has has 355 places, 363 transitions, 754 flow [2024-11-16 23:13:43,043 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 357.5) internal successors, (715), 2 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,043 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:43,043 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] [2024-11-16 23:13:43,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 23:13:43,043 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:13:43,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:43,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1462971234, now seen corresponding path program 1 times [2024-11-16 23:13:43,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:43,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117895907] [2024-11-16 23:13:43,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:43,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:43,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:43,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:43,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:43,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117895907] [2024-11-16 23:13:43,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117895907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:43,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:43,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:43,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328201057] [2024-11-16 23:13:43,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:43,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:43,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:43,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:43,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:43,098 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 398 [2024-11-16 23:13:43,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 363 transitions, 754 flow. Second operand has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:43,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:43,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 398 [2024-11-16 23:13:43,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:47,311 INFO L124 PetriNetUnfolderBase]: 4405/25681 cut-off events. [2024-11-16 23:13:47,311 INFO L125 PetriNetUnfolderBase]: For 2781/2781 co-relation queries the response was YES. [2024-11-16 23:13:47,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31342 conditions, 25681 events. 4405/25681 cut-off events. For 2781/2781 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 342167 event pairs, 2796 based on Foata normal form. 121/22218 useless extension candidates. Maximal degree in co-relation 31334. Up to 4007 conditions per place. [2024-11-16 23:13:47,624 INFO L140 encePairwiseOnDemand]: 395/398 looper letters, 33 selfloop transitions, 2 changer transitions 0/376 dead transitions. [2024-11-16 23:13:47,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 376 transitions, 870 flow [2024-11-16 23:13:47,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:47,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1083 transitions. [2024-11-16 23:13:47,627 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.907035175879397 [2024-11-16 23:13:47,627 INFO L175 Difference]: Start difference. First operand has 355 places, 363 transitions, 754 flow. Second operand 3 states and 1083 transitions. [2024-11-16 23:13:47,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 376 transitions, 870 flow [2024-11-16 23:13:47,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 376 transitions, 870 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 23:13:47,638 INFO L231 Difference]: Finished difference. Result has 358 places, 364 transitions, 766 flow [2024-11-16 23:13:47,639 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=754, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=766, PETRI_PLACES=358, PETRI_TRANSITIONS=364} [2024-11-16 23:13:47,640 INFO L277 CegarLoopForPetriNet]: 368 programPoint places, -10 predicate places. [2024-11-16 23:13:47,640 INFO L471 AbstractCegarLoop]: Abstraction has has 358 places, 364 transitions, 766 flow [2024-11-16 23:13:47,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.3333333333333) internal successors, (1054), 3 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:47,641 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:47,641 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] [2024-11-16 23:13:47,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 23:13:47,641 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:13:47,641 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:47,641 INFO L85 PathProgramCache]: Analyzing trace with hash -543915197, now seen corresponding path program 1 times [2024-11-16 23:13:47,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:47,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670387531] [2024-11-16 23:13:47,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:47,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 23:13:47,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:47,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670387531] [2024-11-16 23:13:47,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670387531] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:47,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:47,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:47,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552461171] [2024-11-16 23:13:47,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:47,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:47,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:47,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:47,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:48,170 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 398 [2024-11-16 23:13:48,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 364 transitions, 766 flow. Second operand has 6 states, 6 states have (on average 345.6666666666667) internal successors, (2074), 6 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:48,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:48,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 398 [2024-11-16 23:13:48,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:53,945 INFO L124 PetriNetUnfolderBase]: 7356/33131 cut-off events. [2024-11-16 23:13:53,945 INFO L125 PetriNetUnfolderBase]: For 4926/4926 co-relation queries the response was YES. [2024-11-16 23:13:54,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43800 conditions, 33131 events. 7356/33131 cut-off events. For 4926/4926 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 442706 event pairs, 2472 based on Foata normal form. 0/29090 useless extension candidates. Maximal degree in co-relation 43790. Up to 3563 conditions per place. [2024-11-16 23:13:54,440 INFO L140 encePairwiseOnDemand]: 392/398 looper letters, 69 selfloop transitions, 6 changer transitions 0/411 dead transitions. [2024-11-16 23:13:54,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 411 transitions, 1090 flow [2024-11-16 23:13:54,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:13:54,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:13:54,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2139 transitions. [2024-11-16 23:13:54,443 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8957286432160804 [2024-11-16 23:13:54,443 INFO L175 Difference]: Start difference. First operand has 358 places, 364 transitions, 766 flow. Second operand 6 states and 2139 transitions. [2024-11-16 23:13:54,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 411 transitions, 1090 flow [2024-11-16 23:13:54,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 411 transitions, 1088 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:13:54,457 INFO L231 Difference]: Finished difference. Result has 361 places, 363 transitions, 774 flow [2024-11-16 23:13:54,458 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=774, PETRI_PLACES=361, PETRI_TRANSITIONS=363} [2024-11-16 23:13:54,459 INFO L277 CegarLoopForPetriNet]: 368 programPoint places, -7 predicate places. [2024-11-16 23:13:54,459 INFO L471 AbstractCegarLoop]: Abstraction has has 361 places, 363 transitions, 774 flow [2024-11-16 23:13:54,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 345.6666666666667) internal successors, (2074), 6 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:54,460 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:54,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:54,460 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 23:13:54,460 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:13:54,461 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:54,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1578771528, now seen corresponding path program 1 times [2024-11-16 23:13:54,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:54,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63766664] [2024-11-16 23:13:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:54,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:54,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:54,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63766664] [2024-11-16 23:13:54,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63766664] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:54,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:54,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-16 23:13:54,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885710589] [2024-11-16 23:13:54,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:54,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:13:54,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:54,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:13:54,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:13:54,515 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 398 [2024-11-16 23:13:54,516 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 363 transitions, 774 flow. Second operand has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:54,516 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:54,516 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 398 [2024-11-16 23:13:54,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:13:58,373 INFO L124 PetriNetUnfolderBase]: 4189/23070 cut-off events. [2024-11-16 23:13:58,373 INFO L125 PetriNetUnfolderBase]: For 2522/2522 co-relation queries the response was YES. [2024-11-16 23:13:58,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28711 conditions, 23070 events. 4189/23070 cut-off events. For 2522/2522 co-relation queries the response was YES. Maximal size of possible extension queue 559. Compared 303461 event pairs, 2550 based on Foata normal form. 120/19934 useless extension candidates. Maximal degree in co-relation 28701. Up to 3994 conditions per place. [2024-11-16 23:13:58,710 INFO L140 encePairwiseOnDemand]: 395/398 looper letters, 32 selfloop transitions, 2 changer transitions 0/375 dead transitions. [2024-11-16 23:13:58,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 375 transitions, 881 flow [2024-11-16 23:13:58,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 23:13:58,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 23:13:58,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1082 transitions. [2024-11-16 23:13:58,715 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.9061976549413735 [2024-11-16 23:13:58,715 INFO L175 Difference]: Start difference. First operand has 361 places, 363 transitions, 774 flow. Second operand 3 states and 1082 transitions. [2024-11-16 23:13:58,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 375 transitions, 881 flow [2024-11-16 23:13:58,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 375 transitions, 869 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-11-16 23:13:58,723 INFO L231 Difference]: Finished difference. Result has 359 places, 364 transitions, 774 flow [2024-11-16 23:13:58,724 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=774, PETRI_PLACES=359, PETRI_TRANSITIONS=364} [2024-11-16 23:13:58,727 INFO L277 CegarLoopForPetriNet]: 368 programPoint places, -9 predicate places. [2024-11-16 23:13:58,727 INFO L471 AbstractCegarLoop]: Abstraction has has 359 places, 364 transitions, 774 flow [2024-11-16 23:13:58,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:58,727 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:13:58,728 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 23:13:58,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-16 23:13:58,728 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:13:58,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:13:58,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1993115533, now seen corresponding path program 1 times [2024-11-16 23:13:58,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:13:58,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461999929] [2024-11-16 23:13:58,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:13:58,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:13:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:13:58,936 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 23:13:58,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:13:58,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461999929] [2024-11-16 23:13:58,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461999929] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:13:58,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:13:58,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-16 23:13:58,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105314707] [2024-11-16 23:13:58,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:13:58,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 23:13:58,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:13:58,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 23:13:58,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-16 23:13:59,138 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 398 [2024-11-16 23:13:59,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 364 transitions, 774 flow. Second operand has 6 states, 6 states have (on average 345.8333333333333) internal successors, (2075), 6 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:13:59,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:13:59,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 398 [2024-11-16 23:13:59,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 23:14:04,941 INFO L124 PetriNetUnfolderBase]: 7184/32852 cut-off events. [2024-11-16 23:14:04,941 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2024-11-16 23:14:05,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43447 conditions, 32852 events. 7184/32852 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 895. Compared 447478 event pairs, 2307 based on Foata normal form. 0/28614 useless extension candidates. Maximal degree in co-relation 43436. Up to 3552 conditions per place. [2024-11-16 23:14:05,516 INFO L140 encePairwiseOnDemand]: 392/398 looper letters, 65 selfloop transitions, 6 changer transitions 0/407 dead transitions. [2024-11-16 23:14:05,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 407 transitions, 1062 flow [2024-11-16 23:14:05,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 23:14:05,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 23:14:05,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2135 transitions. [2024-11-16 23:14:05,520 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8940536013400335 [2024-11-16 23:14:05,520 INFO L175 Difference]: Start difference. First operand has 359 places, 364 transitions, 774 flow. Second operand 6 states and 2135 transitions. [2024-11-16 23:14:05,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 407 transitions, 1062 flow [2024-11-16 23:14:05,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 407 transitions, 1060 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 23:14:05,532 INFO L231 Difference]: Finished difference. Result has 362 places, 363 transitions, 782 flow [2024-11-16 23:14:05,532 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=398, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=782, PETRI_PLACES=362, PETRI_TRANSITIONS=363} [2024-11-16 23:14:05,533 INFO L277 CegarLoopForPetriNet]: 368 programPoint places, -6 predicate places. [2024-11-16 23:14:05,533 INFO L471 AbstractCegarLoop]: Abstraction has has 362 places, 363 transitions, 782 flow [2024-11-16 23:14:05,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 345.8333333333333) internal successors, (2075), 6 states have internal predecessors, (2075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:05,534 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 23:14:05,534 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] [2024-11-16 23:14:05,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 23:14:05,534 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2024-11-16 23:14:05,535 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 23:14:05,535 INFO L85 PathProgramCache]: Analyzing trace with hash 501440558, now seen corresponding path program 1 times [2024-11-16 23:14:05,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 23:14:05,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921261250] [2024-11-16 23:14:05,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 23:14:05,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 23:14:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 23:14:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-16 23:14:05,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 23:14:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921261250] [2024-11-16 23:14:05,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921261250] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 23:14:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 23:14:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 23:14:05,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556217823] [2024-11-16 23:14:05,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 23:14:05,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 23:14:05,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 23:14:05,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 23:14:05,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 23:14:05,611 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 321 out of 398 [2024-11-16 23:14:05,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 363 transitions, 782 flow. Second operand has 3 states, 3 states have (on average 322.3333333333333) internal successors, (967), 3 states have internal predecessors, (967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-16 23:14:05,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 23:14:05,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 321 of 398 [2024-11-16 23:14:05,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand