./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.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/09_fmaxsym-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 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 10:43:52,611 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 10:43:52,663 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 10:43:52,669 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 10:43:52,669 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 10:43:52,686 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 10:43:52,687 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 10:43:52,687 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 10:43:52,687 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 10:43:52,687 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 10:43:52,687 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 10:43:52,687 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 10:43:52,687 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 10:43:52,688 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 10:43:52,688 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 10:43:52,689 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 10:43:52,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:43:52,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 10:43:52,690 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> 41cf9d90b654ba629ed26494b45977a61fd5035aced9f092d4e43a94133522bd [2025-03-17 10:43:52,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 10:43:52,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 10:43:52,934 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 10:43:52,935 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 10:43:52,935 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 10:43:52,936 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2025-03-17 10:43:54,033 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b581c77/68292d41de624471933d91a9bc7774bf/FLAG20b9fe91f [2025-03-17 10:43:54,289 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 10:43:54,290 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/09_fmaxsym-zero.i [2025-03-17 10:43:54,303 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b581c77/68292d41de624471933d91a9bc7774bf/FLAG20b9fe91f [2025-03-17 10:43:54,600 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0b581c77/68292d41de624471933d91a9bc7774bf [2025-03-17 10:43:54,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 10:43:54,603 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 10:43:54,604 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 10:43:54,604 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 10:43:54,607 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 10:43:54,608 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,609 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b5815b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54, skipping insertion in model container [2025-03-17 10:43:54,609 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,635 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 10:43:54,877 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:43:54,890 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 10:43:54,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 10:43:54,958 INFO L204 MainTranslator]: Completed translation [2025-03-17 10:43:54,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54 WrapperNode [2025-03-17 10:43:54,960 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 10:43:54,961 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 10:43:54,961 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 10:43:54,961 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 10:43:54,966 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,973 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,986 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2025-03-17 10:43:54,986 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 10:43:54,987 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 10:43:54,987 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 10:43:54,987 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 10:43:54,990 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,992 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,992 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,996 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:54,999 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:55,000 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:55,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:55,002 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 10:43:55,002 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 10:43:55,002 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 10:43:55,003 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 10:43:55,003 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (1/1) ... [2025-03-17 10:43:55,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 10:43:55,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 10:43:55,026 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) [2025-03-17 10:43:55,028 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 [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-17 10:43:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-17 10:43:55,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 10:43:55,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 10:43:55,044 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 10:43:55,144 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 10:43:55,145 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 10:43:55,282 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 10:43:55,282 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 10:43:55,302 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 10:43:55,303 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 10:43:55,303 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:43:55 BoogieIcfgContainer [2025-03-17 10:43:55,303 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 10:43:55,305 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 10:43:55,305 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 10:43:55,308 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 10:43:55,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 10:43:54" (1/3) ... [2025-03-17 10:43:55,309 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f3bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:43:55, skipping insertion in model container [2025-03-17 10:43:55,309 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 10:43:54" (2/3) ... [2025-03-17 10:43:55,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@315f3bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 10:43:55, skipping insertion in model container [2025-03-17 10:43:55,310 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 10:43:55" (3/3) ... [2025-03-17 10:43:55,311 INFO L128 eAbstractionObserver]: Analyzing ICFG 09_fmaxsym-zero.i [2025-03-17 10:43:55,322 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 10:43:55,325 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 09_fmaxsym-zero.i that has 2 procedures, 94 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-03-17 10:43:55,326 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 10:43:55,382 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:55,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 99 transitions, 202 flow [2025-03-17 10:43:55,449 INFO L124 PetriNetUnfolderBase]: 5/106 cut-off events. [2025-03-17 10:43:55,452 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:55,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 5/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 81 event pairs, 0 based on Foata normal form. 0/95 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2025-03-17 10:43:55,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 99 transitions, 202 flow [2025-03-17 10:43:55,459 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 97 places, 99 transitions, 202 flow [2025-03-17 10:43:55,464 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:55,472 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:55,472 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-17 10:43:55,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:55,484 INFO L124 PetriNetUnfolderBase]: 0/47 cut-off events. [2025-03-17 10:43:55,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 10:43:55,484 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:55,485 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-03-17 10:43:55,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2025-03-17 10:43:55,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:55,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1609242920, now seen corresponding path program 1 times [2025-03-17 10:43:55,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526396779] [2025-03-17 10:43:55,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:55,552 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 10:43:55,570 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 10:43:55,571 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,571 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,571 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:55,575 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 35 statements into 1 equivalence classes. [2025-03-17 10:43:55,584 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 35 of 35 statements. [2025-03-17 10:43:55,584 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,584 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,596 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:55,598 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:55,598 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2025-03-17 10:43:55,600 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2025-03-17 10:43:55,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 10:43:55,601 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:43:55,603 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:55,603 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 10:43:55,639 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:55,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 163 transitions, 336 flow [2025-03-17 10:43:55,688 INFO L124 PetriNetUnfolderBase]: 10/179 cut-off events. [2025-03-17 10:43:55,688 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:43:55,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 179 events. 10/179 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 310 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 135. Up to 3 conditions per place. [2025-03-17 10:43:55,690 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 163 transitions, 336 flow [2025-03-17 10:43:55,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 158 places, 163 transitions, 336 flow [2025-03-17 10:43:55,694 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:55,695 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:55,695 INFO L334 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2025-03-17 10:43:55,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:55,715 INFO L124 PetriNetUnfolderBase]: 1/71 cut-off events. [2025-03-17 10:43:55,716 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 10:43:55,716 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:55,716 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-03-17 10:43:55,716 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2025-03-17 10:43:55,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:55,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1054500436, now seen corresponding path program 1 times [2025-03-17 10:43:55,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:55,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456349535] [2025-03-17 10:43:55,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:55,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 10:43:55,751 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 10:43:55,751 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,751 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,752 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:55,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 41 statements into 1 equivalence classes. [2025-03-17 10:43:55,770 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 41 of 41 statements. [2025-03-17 10:43:55,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,778 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:55,779 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:55,779 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2025-03-17 10:43:55,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2025-03-17 10:43:55,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2025-03-17 10:43:55,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2025-03-17 10:43:55,781 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2025-03-17 10:43:55,782 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2025-03-17 10:43:55,783 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2025-03-17 10:43:55,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 10:43:55,783 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:43:55,783 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:55,784 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 10:43:55,848 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 227 transitions, 472 flow [2025-03-17 10:43:55,904 INFO L124 PetriNetUnfolderBase]: 15/252 cut-off events. [2025-03-17 10:43:55,905 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:43:55,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265 conditions, 252 events. 15/252 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 664 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 198. Up to 4 conditions per place. [2025-03-17 10:43:55,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 219 places, 227 transitions, 472 flow [2025-03-17 10:43:55,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 219 places, 227 transitions, 472 flow [2025-03-17 10:43:55,912 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:55,913 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:55,913 INFO L334 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2025-03-17 10:43:55,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:55,927 INFO L124 PetriNetUnfolderBase]: 2/100 cut-off events. [2025-03-17 10:43:55,927 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 10:43:55,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:55,927 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-03-17 10:43:55,927 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2025-03-17 10:43:55,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:55,928 INFO L85 PathProgramCache]: Analyzing trace with hash 688487791, now seen corresponding path program 1 times [2025-03-17 10:43:55,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:55,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923419833] [2025-03-17 10:43:55,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:55,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:55,944 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 10:43:55,959 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 10:43:55,959 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,959 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,959 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:55,964 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 47 statements into 1 equivalence classes. [2025-03-17 10:43:55,984 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 47 of 47 statements. [2025-03-17 10:43:55,984 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:55,984 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:55,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:55,991 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:55,991 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2025-03-17 10:43:55,994 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2025-03-17 10:43:55,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2025-03-17 10:43:55,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2025-03-17 10:43:55,995 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2025-03-17 10:43:55,996 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2025-03-17 10:43:55,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 10:43:55,996 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-17 10:43:55,998 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:55,998 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-17 10:43:56,038 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:56,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 291 transitions, 610 flow [2025-03-17 10:43:56,087 INFO L124 PetriNetUnfolderBase]: 20/325 cut-off events. [2025-03-17 10:43:56,088 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:43:56,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 325 events. 20/325 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1047 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 261. Up to 5 conditions per place. [2025-03-17 10:43:56,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 291 transitions, 610 flow [2025-03-17 10:43:56,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 291 transitions, 610 flow [2025-03-17 10:43:56,098 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:56,099 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:56,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 10:43:56,133 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:56,133 INFO L124 PetriNetUnfolderBase]: 3/139 cut-off events. [2025-03-17 10:43:56,133 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-17 10:43:56,134 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:56,134 INFO L206 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] [2025-03-17 10:43:56,135 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-17 10:43:56,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -499623300, now seen corresponding path program 1 times [2025-03-17 10:43:56,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:56,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543552207] [2025-03-17 10:43:56,136 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:56,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:56,153 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-17 10:43:56,173 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 10:43:56,173 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:56,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:56,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:56,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:56,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543552207] [2025-03-17 10:43:56,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543552207] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:56,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:56,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:43:56,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386523096] [2025-03-17 10:43:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:56,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:43:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:56,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:43:56,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:43:56,978 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 250 out of 291 [2025-03-17 10:43:56,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 291 transitions, 610 flow. Second operand has 6 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 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) [2025-03-17 10:43:56,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:56,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 250 of 291 [2025-03-17 10:43:56,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:43:58,137 INFO L124 PetriNetUnfolderBase]: 1211/7321 cut-off events. [2025-03-17 10:43:58,138 INFO L125 PetriNetUnfolderBase]: For 1768/1768 co-relation queries the response was YES. [2025-03-17 10:43:58,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9644 conditions, 7321 events. 1211/7321 cut-off events. For 1768/1768 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 78490 event pairs, 447 based on Foata normal form. 1901/8291 useless extension candidates. Maximal degree in co-relation 2798. Up to 689 conditions per place. [2025-03-17 10:43:58,224 INFO L140 encePairwiseOnDemand]: 272/291 looper letters, 54 selfloop transitions, 5 changer transitions 0/302 dead transitions. [2025-03-17 10:43:58,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 302 transitions, 834 flow [2025-03-17 10:43:58,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:43:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:43:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1613 transitions. [2025-03-17 10:43:58,271 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9238258877434136 [2025-03-17 10:43:58,272 INFO L175 Difference]: Start difference. First operand has 280 places, 291 transitions, 610 flow. Second operand 6 states and 1613 transitions. [2025-03-17 10:43:58,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 302 transitions, 834 flow [2025-03-17 10:43:58,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 302 transitions, 804 flow, removed 15 selfloop flow, removed 0 redundant places. [2025-03-17 10:43:58,282 INFO L231 Difference]: Finished difference. Result has 272 places, 266 transitions, 564 flow [2025-03-17 10:43:58,284 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=291, PETRI_DIFFERENCE_MINUEND_FLOW=554, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=564, PETRI_PLACES=272, PETRI_TRANSITIONS=266} [2025-03-17 10:43:58,287 INFO L279 CegarLoopForPetriNet]: 280 programPoint places, -8 predicate places. [2025-03-17 10:43:58,287 INFO L471 AbstractCegarLoop]: Abstraction has has 272 places, 266 transitions, 564 flow [2025-03-17 10:43:58,288 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 251.66666666666666) internal successors, (1510), 6 states have internal predecessors, (1510), 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) [2025-03-17 10:43:58,288 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:58,288 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-03-17 10:43:58,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 10:43:58,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2025-03-17 10:43:58,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:58,289 INFO L85 PathProgramCache]: Analyzing trace with hash -939573775, now seen corresponding path program 1 times [2025-03-17 10:43:58,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:58,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136281433] [2025-03-17 10:43:58,289 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:58,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:58,296 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-17 10:43:58,306 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 10:43:58,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:58,307 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:58,307 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:43:58,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-17 10:43:58,317 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 10:43:58,318 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:58,318 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:43:58,328 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:43:58,329 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:43:58,329 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2025-03-17 10:43:58,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2025-03-17 10:43:58,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2025-03-17 10:43:58,329 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2025-03-17 10:43:58,330 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2025-03-17 10:43:58,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2025-03-17 10:43:58,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2025-03-17 10:43:58,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2025-03-17 10:43:58,331 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2025-03-17 10:43:58,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 10:43:58,331 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:43:58,332 WARN L246 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:43:58,332 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2025-03-17 10:43:58,368 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:43:58,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 341 places, 355 transitions, 750 flow [2025-03-17 10:43:58,404 INFO L124 PetriNetUnfolderBase]: 25/398 cut-off events. [2025-03-17 10:43:58,405 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2025-03-17 10:43:58,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 398 events. 25/398 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1441 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 338. Up to 6 conditions per place. [2025-03-17 10:43:58,410 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 355 transitions, 750 flow [2025-03-17 10:43:58,413 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 341 places, 355 transitions, 750 flow [2025-03-17 10:43:58,413 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:43:58,414 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:43:58,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2025-03-17 10:43:58,422 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:43:58,422 INFO L124 PetriNetUnfolderBase]: 3/145 cut-off events. [2025-03-17 10:43:58,422 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-17 10:43:58,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:43:58,422 INFO L206 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] [2025-03-17 10:43:58,422 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:43:58,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:43:58,423 INFO L85 PathProgramCache]: Analyzing trace with hash -414150946, now seen corresponding path program 1 times [2025-03-17 10:43:58,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:43:58,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217764914] [2025-03-17 10:43:58,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:43:58,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:43:58,430 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-17 10:43:58,434 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 10:43:58,435 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:43:58,435 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:43:58,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:43:58,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:43:58,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217764914] [2025-03-17 10:43:58,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217764914] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:43:58,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:43:58,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:43:58,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666618181] [2025-03-17 10:43:58,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:43:58,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:43:58,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:43:58,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:43:58,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:43:58,936 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 355 [2025-03-17 10:43:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 355 transitions, 750 flow. Second operand has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 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) [2025-03-17 10:43:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:43:58,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 355 [2025-03-17 10:43:58,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:44:02,663 INFO L124 PetriNetUnfolderBase]: 4694/23305 cut-off events. [2025-03-17 10:44:02,663 INFO L125 PetriNetUnfolderBase]: For 8329/8329 co-relation queries the response was YES. [2025-03-17 10:44:02,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31866 conditions, 23305 events. 4694/23305 cut-off events. For 8329/8329 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 299880 event pairs, 1824 based on Foata normal form. 7265/27693 useless extension candidates. Maximal degree in co-relation 9584. Up to 2552 conditions per place. [2025-03-17 10:44:02,999 INFO L140 encePairwiseOnDemand]: 333/355 looper letters, 69 selfloop transitions, 5 changer transitions 0/373 dead transitions. [2025-03-17 10:44:02,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 373 transitions, 1062 flow [2025-03-17 10:44:03,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:44:03,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:44:03,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1985 transitions. [2025-03-17 10:44:03,006 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.931924882629108 [2025-03-17 10:44:03,006 INFO L175 Difference]: Start difference. First operand has 341 places, 355 transitions, 750 flow. Second operand 6 states and 1985 transitions. [2025-03-17 10:44:03,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 373 transitions, 1062 flow [2025-03-17 10:44:03,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 373 transitions, 1002 flow, removed 30 selfloop flow, removed 0 redundant places. [2025-03-17 10:44:03,015 INFO L231 Difference]: Finished difference. Result has 331 places, 325 transitions, 688 flow [2025-03-17 10:44:03,016 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=355, PETRI_DIFFERENCE_MINUEND_FLOW=678, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=688, PETRI_PLACES=331, PETRI_TRANSITIONS=325} [2025-03-17 10:44:03,016 INFO L279 CegarLoopForPetriNet]: 341 programPoint places, -10 predicate places. [2025-03-17 10:44:03,016 INFO L471 AbstractCegarLoop]: Abstraction has has 331 places, 325 transitions, 688 flow [2025-03-17 10:44:03,017 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.6666666666667) internal successors, (1852), 6 states have internal predecessors, (1852), 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) [2025-03-17 10:44:03,017 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:03,018 INFO L206 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:44:03,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 10:44:03,018 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 21 more)] === [2025-03-17 10:44:03,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:03,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1338792782, now seen corresponding path program 1 times [2025-03-17 10:44:03,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:03,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27644291] [2025-03-17 10:44:03,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:03,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:03,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 10:44:03,035 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 10:44:03,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:03,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:44:03,036 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 10:44:03,038 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 10:44:03,043 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 10:44:03,046 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:03,047 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 10:44:03,055 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 10:44:03,055 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 10:44:03,055 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2025-03-17 10:44:03,055 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (22 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (21 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (19 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 25 remaining) [2025-03-17 10:44:03,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (16 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (15 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (14 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (13 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (11 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (9 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (8 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (7 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (6 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 25 remaining) [2025-03-17 10:44:03,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 25 remaining) [2025-03-17 10:44:03,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (1 of 25 remaining) [2025-03-17 10:44:03,058 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 25 remaining) [2025-03-17 10:44:03,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 10:44:03,058 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-17 10:44:03,058 WARN L246 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 10:44:03,058 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2025-03-17 10:44:03,108 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 10:44:03,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 419 transitions, 892 flow [2025-03-17 10:44:03,150 INFO L124 PetriNetUnfolderBase]: 30/471 cut-off events. [2025-03-17 10:44:03,150 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2025-03-17 10:44:03,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 471 events. 30/471 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1865 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 417. Up to 7 conditions per place. [2025-03-17 10:44:03,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 402 places, 419 transitions, 892 flow [2025-03-17 10:44:03,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 419 transitions, 892 flow [2025-03-17 10:44:03,160 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 10:44:03,161 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;@6f2b7084, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 10:44:03,161 INFO L334 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2025-03-17 10:44:03,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 10:44:03,167 INFO L124 PetriNetUnfolderBase]: 3/145 cut-off events. [2025-03-17 10:44:03,167 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-17 10:44:03,167 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:03,167 INFO L206 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] [2025-03-17 10:44:03,167 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 10:44:03,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:03,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1752079872, now seen corresponding path program 1 times [2025-03-17 10:44:03,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:03,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838079641] [2025-03-17 10:44:03,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:03,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:03,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-03-17 10:44:03,180 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-03-17 10:44:03,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:03,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:44:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:44:03,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:44:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838079641] [2025-03-17 10:44:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838079641] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:44:03,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:44:03,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:44:03,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526439030] [2025-03-17 10:44:03,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:44:03,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:44:03,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:44:03,364 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:44:03,365 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:44:03,640 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 419 [2025-03-17 10:44:03,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 419 transitions, 892 flow. Second operand has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2025-03-17 10:44:03,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:44:03,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 419 [2025-03-17 10:44:03,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:44:16,654 INFO L124 PetriNetUnfolderBase]: 17249/73363 cut-off events. [2025-03-17 10:44:16,654 INFO L125 PetriNetUnfolderBase]: For 36112/36112 co-relation queries the response was YES. [2025-03-17 10:44:17,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103795 conditions, 73363 events. 17249/73363 cut-off events. For 36112/36112 co-relation queries the response was YES. Maximal size of possible extension queue 1682. Compared 1083786 event pairs, 6927 based on Foata normal form. 26516/91158 useless extension candidates. Maximal degree in co-relation 31697. Up to 9113 conditions per place. [2025-03-17 10:44:18,393 INFO L140 encePairwiseOnDemand]: 394/419 looper letters, 84 selfloop transitions, 5 changer transitions 0/444 dead transitions. [2025-03-17 10:44:18,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 390 places, 444 transitions, 1300 flow [2025-03-17 10:44:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:44:18,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:44:18,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2357 transitions. [2025-03-17 10:44:18,397 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9375497215592681 [2025-03-17 10:44:18,397 INFO L175 Difference]: Start difference. First operand has 402 places, 419 transitions, 892 flow. Second operand 6 states and 2357 transitions. [2025-03-17 10:44:18,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 390 places, 444 transitions, 1300 flow [2025-03-17 10:44:18,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 444 transitions, 1200 flow, removed 50 selfloop flow, removed 0 redundant places. [2025-03-17 10:44:18,415 INFO L231 Difference]: Finished difference. Result has 390 places, 384 transitions, 812 flow [2025-03-17 10:44:18,415 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=802, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=379, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=812, PETRI_PLACES=390, PETRI_TRANSITIONS=384} [2025-03-17 10:44:18,416 INFO L279 CegarLoopForPetriNet]: 402 programPoint places, -12 predicate places. [2025-03-17 10:44:18,416 INFO L471 AbstractCegarLoop]: Abstraction has has 390 places, 384 transitions, 812 flow [2025-03-17 10:44:18,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.6666666666667) internal successors, (2194), 6 states have internal predecessors, (2194), 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) [2025-03-17 10:44:18,417 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:18,417 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2025-03-17 10:44:18,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 10:44:18,418 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 10:44:18,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:18,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1628792255, now seen corresponding path program 1 times [2025-03-17 10:44:18,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:18,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113940667] [2025-03-17 10:44:18,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:18,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:18,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 10:44:18,428 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 10:44:18,429 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:18,429 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:44:18,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:44:18,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:44:18,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113940667] [2025-03-17 10:44:18,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113940667] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:44:18,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:44:18,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 10:44:18,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022660689] [2025-03-17 10:44:18,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:44:18,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 10:44:18,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:44:18,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 10:44:18,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 10:44:18,930 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 364 out of 419 [2025-03-17 10:44:18,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 384 transitions, 812 flow. Second operand has 6 states, 6 states have (on average 365.8333333333333) internal successors, (2195), 6 states have internal predecessors, (2195), 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) [2025-03-17 10:44:18,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:44:18,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 364 of 419 [2025-03-17 10:44:18,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 10:44:32,148 INFO L124 PetriNetUnfolderBase]: 17230/73068 cut-off events. [2025-03-17 10:44:32,148 INFO L125 PetriNetUnfolderBase]: For 11980/11980 co-relation queries the response was YES. [2025-03-17 10:44:33,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97918 conditions, 73068 events. 17230/73068 cut-off events. For 11980/11980 co-relation queries the response was YES. Maximal size of possible extension queue 1683. Compared 1083162 event pairs, 6924 based on Foata normal form. 0/64421 useless extension candidates. Maximal degree in co-relation 97840. Up to 9107 conditions per place. [2025-03-17 10:44:33,906 INFO L140 encePairwiseOnDemand]: 413/419 looper letters, 80 selfloop transitions, 5 changer transitions 0/439 dead transitions. [2025-03-17 10:44:33,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 439 transitions, 1172 flow [2025-03-17 10:44:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 10:44:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 10:44:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2270 transitions. [2025-03-17 10:44:33,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9029435163086714 [2025-03-17 10:44:33,910 INFO L175 Difference]: Start difference. First operand has 390 places, 384 transitions, 812 flow. Second operand 6 states and 2270 transitions. [2025-03-17 10:44:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 439 transitions, 1172 flow [2025-03-17 10:44:33,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 439 transitions, 1162 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 10:44:33,938 INFO L231 Difference]: Finished difference. Result has 389 places, 383 transitions, 810 flow [2025-03-17 10:44:33,939 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=800, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=810, PETRI_PLACES=389, PETRI_TRANSITIONS=383} [2025-03-17 10:44:33,939 INFO L279 CegarLoopForPetriNet]: 402 programPoint places, -13 predicate places. [2025-03-17 10:44:33,939 INFO L471 AbstractCegarLoop]: Abstraction has has 389 places, 383 transitions, 810 flow [2025-03-17 10:44:33,940 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 365.8333333333333) internal successors, (2195), 6 states have internal predecessors, (2195), 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) [2025-03-17 10:44:33,940 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 10:44:33,941 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 10:44:33,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 10:44:33,941 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2025-03-17 10:44:33,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 10:44:33,941 INFO L85 PathProgramCache]: Analyzing trace with hash -377367421, now seen corresponding path program 1 times [2025-03-17 10:44:33,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 10:44:33,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105030756] [2025-03-17 10:44:33,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 10:44:33,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 10:44:33,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 10:44:33,952 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 10:44:33,953 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 10:44:33,953 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 10:44:33,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 10:44:33,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 10:44:33,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105030756] [2025-03-17 10:44:33,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105030756] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 10:44:33,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 10:44:33,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 10:44:33,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271345203] [2025-03-17 10:44:33,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 10:44:33,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 10:44:33,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 10:44:33,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 10:44:33,978 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 10:44:34,027 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 419 [2025-03-17 10:44:34,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 383 transitions, 810 flow. Second operand has 3 states, 3 states have (on average 335.3333333333333) internal successors, (1006), 3 states have internal predecessors, (1006), 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) [2025-03-17 10:44:34,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 10:44:34,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 419 [2025-03-17 10:44:34,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand