./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 798a7b37 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/37_stack_lock_p0_vs_concur.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 82435f17481c054c9c5a8a1deca188b6bf36f1a34e751392b5a27cd7180adc30 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 06:26:46,181 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 06:26:46,251 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-04 06:26:46,255 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 06:26:46,256 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 06:26:46,274 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 06:26:46,278 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 06:26:46,278 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 06:26:46,278 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 06:26:46,278 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 06:26:46,278 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 06:26:46,278 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 06:26:46,278 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 06:26:46,279 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 06:26:46,279 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 06:26:46,283 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 06:26:46,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 06:26:46,283 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 06:26:46,284 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 06:26:46,284 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 06:26:46,284 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 -> 82435f17481c054c9c5a8a1deca188b6bf36f1a34e751392b5a27cd7180adc30 [2025-03-04 06:26:46,514 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 06:26:46,523 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 06:26:46,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 06:26:46,525 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 06:26:46,525 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 06:26:46,526 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2025-03-04 06:26:47,713 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa99e8d5f/f4b7847a688140ad97ed8ae965735dfd/FLAG4eafca410 [2025-03-04 06:26:47,947 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 06:26:47,948 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/37_stack_lock_p0_vs_concur.i [2025-03-04 06:26:47,956 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa99e8d5f/f4b7847a688140ad97ed8ae965735dfd/FLAG4eafca410 [2025-03-04 06:26:47,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa99e8d5f/f4b7847a688140ad97ed8ae965735dfd [2025-03-04 06:26:47,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 06:26:47,970 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 06:26:47,971 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 06:26:47,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 06:26:47,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 06:26:47,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 06:26:47" (1/1) ... [2025-03-04 06:26:47,976 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bea4536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:47, skipping insertion in model container [2025-03-04 06:26:47,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 06:26:47" (1/1) ... [2025-03-04 06:26:48,020 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 06:26:48,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 06:26:48,316 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 06:26:48,355 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 06:26:48,388 INFO L204 MainTranslator]: Completed translation [2025-03-04 06:26:48,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48 WrapperNode [2025-03-04 06:26:48,389 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 06:26:48,390 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 06:26:48,390 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 06:26:48,390 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 06:26:48,396 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,409 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,430 INFO L138 Inliner]: procedures = 165, calls = 30, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 201 [2025-03-04 06:26:48,431 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 06:26:48,432 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 06:26:48,432 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 06:26:48,432 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 06:26:48,436 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,439 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,439 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,445 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,450 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,451 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,455 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,457 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 06:26:48,457 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 06:26:48,457 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 06:26:48,461 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 06:26:48,461 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (1/1) ... [2025-03-04 06:26:48,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 06:26:48,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 06:26:48,489 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) [2025-03-04 06:26:48,491 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 [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2025-03-04 06:26:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 06:26:48,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 06:26:48,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 06:26:48,509 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 06:26:48,605 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 06:26:48,607 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 06:26:48,910 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 06:26:48,910 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 06:26:49,006 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 06:26:49,006 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 06:26:49,006 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 06:26:49 BoogieIcfgContainer [2025-03-04 06:26:49,008 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 06:26:49,011 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 06:26:49,011 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 06:26:49,014 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 06:26:49,014 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 06:26:47" (1/3) ... [2025-03-04 06:26:49,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7526c3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 06:26:49, skipping insertion in model container [2025-03-04 06:26:49,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 06:26:48" (2/3) ... [2025-03-04 06:26:49,015 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7526c3fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 06:26:49, skipping insertion in model container [2025-03-04 06:26:49,015 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 06:26:49" (3/3) ... [2025-03-04 06:26:49,017 INFO L128 eAbstractionObserver]: Analyzing ICFG 37_stack_lock_p0_vs_concur.i [2025-03-04 06:26:49,026 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 06:26:49,027 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 37_stack_lock_p0_vs_concur.i that has 2 procedures, 194 locations, 1 initial locations, 2 loop locations, and 15 error locations. [2025-03-04 06:26:49,027 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 06:26:49,101 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 06:26:49,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 199 transitions, 402 flow [2025-03-04 06:26:49,212 INFO L124 PetriNetUnfolderBase]: 5/206 cut-off events. [2025-03-04 06:26:49,214 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 06:26:49,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 206 events. 5/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 162 event pairs, 0 based on Foata normal form. 0/184 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2025-03-04 06:26:49,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 199 transitions, 402 flow [2025-03-04 06:26:49,223 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 199 transitions, 402 flow [2025-03-04 06:26:49,233 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 06:26:49,242 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;@1581c403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 06:26:49,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2025-03-04 06:26:49,267 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 06:26:49,268 INFO L124 PetriNetUnfolderBase]: 0/107 cut-off events. [2025-03-04 06:26:49,268 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 06:26:49,268 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:49,269 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:49,269 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 27 more)] === [2025-03-04 06:26:49,273 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:49,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1111552891, now seen corresponding path program 1 times [2025-03-04 06:26:49,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:49,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661181] [2025-03-04 06:26:49,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:49,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:49,359 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 06:26:49,408 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 06:26:49,408 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:49,409 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:49,410 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 06:26:49,422 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 93 statements into 1 equivalence classes. [2025-03-04 06:26:49,463 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 93 of 93 statements. [2025-03-04 06:26:49,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:49,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:49,483 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 06:26:49,484 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 06:26:49,485 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (30 of 31 remaining) [2025-03-04 06:26:49,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (29 of 31 remaining) [2025-03-04 06:26:49,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 31 remaining) [2025-03-04 06:26:49,488 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (27 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 31 remaining) [2025-03-04 06:26:49,489 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (11 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (10 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 31 remaining) [2025-03-04 06:26:49,490 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 31 remaining) [2025-03-04 06:26:49,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 31 remaining) [2025-03-04 06:26:49,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 31 remaining) [2025-03-04 06:26:49,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 31 remaining) [2025-03-04 06:26:49,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 31 remaining) [2025-03-04 06:26:49,491 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 31 remaining) [2025-03-04 06:26:49,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 06:26:49,492 INFO L422 BasicCegarLoop]: Path program histogram: [1] [2025-03-04 06:26:49,496 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 06:26:49,496 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-04 06:26:49,556 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 06:26:49,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 305 transitions, 620 flow [2025-03-04 06:26:49,660 INFO L124 PetriNetUnfolderBase]: 10/321 cut-off events. [2025-03-04 06:26:49,660 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 06:26:49,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 321 events. 10/321 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 640 event pairs, 0 based on Foata normal form. 0/278 useless extension candidates. Maximal degree in co-relation 219. Up to 3 conditions per place. [2025-03-04 06:26:49,663 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 305 transitions, 620 flow [2025-03-04 06:26:49,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 305 transitions, 620 flow [2025-03-04 06:26:49,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 06:26:49,671 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;@1581c403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 06:26:49,671 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2025-03-04 06:26:49,690 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 06:26:49,691 INFO L124 PetriNetUnfolderBase]: 0/116 cut-off events. [2025-03-04 06:26:49,691 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 06:26:49,691 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:49,691 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:49,691 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err14ASSERT_VIOLATIONDATA_RACE === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2025-03-04 06:26:49,692 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash -425568880, now seen corresponding path program 1 times [2025-03-04 06:26:49,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:49,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790250857] [2025-03-04 06:26:49,692 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:49,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:49,719 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-04 06:26:49,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 06:26:49,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:49,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:26:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:26:49,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:26:49,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790250857] [2025-03-04 06:26:49,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790250857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:26:49,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:26:49,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 06:26:49,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043362249] [2025-03-04 06:26:49,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:26:49,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 06:26:49,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:26:49,879 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 06:26:49,880 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 06:26:49,884 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 270 out of 305 [2025-03-04 06:26:49,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 300 places, 305 transitions, 620 flow. Second operand has 2 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 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) [2025-03-04 06:26:49,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 06:26:49,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 270 of 305 [2025-03-04 06:26:49,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 06:26:50,099 INFO L124 PetriNetUnfolderBase]: 44/801 cut-off events. [2025-03-04 06:26:50,099 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-04 06:26:50,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 897 conditions, 801 events. 44/801 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 4046 event pairs, 30 based on Foata normal form. 93/803 useless extension candidates. Maximal degree in co-relation 191. Up to 73 conditions per place. [2025-03-04 06:26:50,110 INFO L140 encePairwiseOnDemand]: 284/305 looper letters, 12 selfloop transitions, 0 changer transitions 0/273 dead transitions. [2025-03-04 06:26:50,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 273 transitions, 580 flow [2025-03-04 06:26:50,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 06:26:50,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 06:26:50,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 573 transitions. [2025-03-04 06:26:50,127 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9393442622950819 [2025-03-04 06:26:50,130 INFO L175 Difference]: Start difference. First operand has 300 places, 305 transitions, 620 flow. Second operand 2 states and 573 transitions. [2025-03-04 06:26:50,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 273 transitions, 580 flow [2025-03-04 06:26:50,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 273 transitions, 580 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 06:26:50,140 INFO L231 Difference]: Finished difference. Result has 275 places, 273 transitions, 556 flow [2025-03-04 06:26:50,142 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=556, PETRI_PLACES=275, PETRI_TRANSITIONS=273} [2025-03-04 06:26:50,145 INFO L279 CegarLoopForPetriNet]: 300 programPoint places, -25 predicate places. [2025-03-04 06:26:50,146 INFO L471 AbstractCegarLoop]: Abstraction has has 275 places, 273 transitions, 556 flow [2025-03-04 06:26:50,146 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 271.0) internal successors, (542), 2 states have internal predecessors, (542), 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) [2025-03-04 06:26:50,147 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:50,147 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:50,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 06:26:50,148 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 42 more)] === [2025-03-04 06:26:50,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:50,149 INFO L85 PathProgramCache]: Analyzing trace with hash 775333927, now seen corresponding path program 1 times [2025-03-04 06:26:50,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:50,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353556248] [2025-03-04 06:26:50,149 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:50,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:50,174 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 06:26:50,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 06:26:50,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:50,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:50,209 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 06:26:50,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 99 statements into 1 equivalence classes. [2025-03-04 06:26:50,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 99 of 99 statements. [2025-03-04 06:26:50,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:50,241 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:50,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 06:26:50,258 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (45 of 46 remaining) [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (44 of 46 remaining) [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 46 remaining) [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 46 remaining) [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (41 of 46 remaining) [2025-03-04 06:26:50,258 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (31 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (29 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (27 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 46 remaining) [2025-03-04 06:26:50,259 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (11 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (10 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 46 remaining) [2025-03-04 06:26:50,260 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 46 remaining) [2025-03-04 06:26:50,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 06:26:50,261 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1] [2025-03-04 06:26:50,261 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 06:26:50,261 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-04 06:26:50,332 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 06:26:50,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 411 transitions, 840 flow [2025-03-04 06:26:50,405 INFO L124 PetriNetUnfolderBase]: 15/436 cut-off events. [2025-03-04 06:26:50,405 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-04 06:26:50,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 449 conditions, 436 events. 15/436 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1280 event pairs, 0 based on Foata normal form. 0/372 useless extension candidates. Maximal degree in co-relation 325. Up to 4 conditions per place. [2025-03-04 06:26:50,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 411 transitions, 840 flow [2025-03-04 06:26:50,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 411 transitions, 840 flow [2025-03-04 06:26:50,417 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 06:26:50,418 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;@1581c403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 06:26:50,418 INFO L334 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2025-03-04 06:26:50,427 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 06:26:50,428 INFO L124 PetriNetUnfolderBase]: 0/116 cut-off events. [2025-03-04 06:26:50,428 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 06:26:50,428 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:50,428 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:50,428 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err14ASSERT_VIOLATIONDATA_RACE === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2025-03-04 06:26:50,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:50,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1839586292, now seen corresponding path program 1 times [2025-03-04 06:26:50,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:50,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166976485] [2025-03-04 06:26:50,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:50,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:50,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-04 06:26:50,468 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 06:26:50,468 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:50,469 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:26:50,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:26:50,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:26:50,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166976485] [2025-03-04 06:26:50,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166976485] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:26:50,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:26:50,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 06:26:50,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632136760] [2025-03-04 06:26:50,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:26:50,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 06:26:50,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:26:50,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 06:26:50,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 06:26:50,535 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 359 out of 411 [2025-03-04 06:26:50,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 411 transitions, 840 flow. Second operand has 2 states, 2 states have (on average 360.0) internal successors, (720), 2 states have internal predecessors, (720), 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) [2025-03-04 06:26:50,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 06:26:50,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 359 of 411 [2025-03-04 06:26:50,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 06:26:51,296 INFO L124 PetriNetUnfolderBase]: 476/4683 cut-off events. [2025-03-04 06:26:51,296 INFO L125 PetriNetUnfolderBase]: For 343/343 co-relation queries the response was YES. [2025-03-04 06:26:51,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5500 conditions, 4683 events. 476/4683 cut-off events. For 343/343 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 46216 event pairs, 390 based on Foata normal form. 728/4838 useless extension candidates. Maximal degree in co-relation 887. Up to 649 conditions per place. [2025-03-04 06:26:51,345 INFO L140 encePairwiseOnDemand]: 380/411 looper letters, 18 selfloop transitions, 0 changer transitions 0/365 dead transitions. [2025-03-04 06:26:51,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 365 transitions, 784 flow [2025-03-04 06:26:51,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 06:26:51,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 06:26:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 767 transitions. [2025-03-04 06:26:51,347 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9330900243309003 [2025-03-04 06:26:51,347 INFO L175 Difference]: Start difference. First operand has 403 places, 411 transitions, 840 flow. Second operand 2 states and 767 transitions. [2025-03-04 06:26:51,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 365 transitions, 784 flow [2025-03-04 06:26:51,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 365 transitions, 782 flow, removed 1 selfloop flow, removed 0 redundant places. [2025-03-04 06:26:51,353 INFO L231 Difference]: Finished difference. Result has 367 places, 365 transitions, 746 flow [2025-03-04 06:26:51,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=746, PETRI_PLACES=367, PETRI_TRANSITIONS=365} [2025-03-04 06:26:51,354 INFO L279 CegarLoopForPetriNet]: 403 programPoint places, -36 predicate places. [2025-03-04 06:26:51,354 INFO L471 AbstractCegarLoop]: Abstraction has has 367 places, 365 transitions, 746 flow [2025-03-04 06:26:51,355 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 360.0) internal successors, (720), 2 states have internal predecessors, (720), 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) [2025-03-04 06:26:51,355 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:51,355 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:51,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 06:26:51,355 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err8ASSERT_VIOLATIONDATA_RACE === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2025-03-04 06:26:51,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:51,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1739133794, now seen corresponding path program 1 times [2025-03-04 06:26:51,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:51,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356293861] [2025-03-04 06:26:51,356 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:51,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:51,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:26:51,389 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:26:51,390 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:51,390 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:26:51,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:26:51,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:26:51,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356293861] [2025-03-04 06:26:51,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356293861] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:26:51,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:26:51,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 06:26:51,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636695878] [2025-03-04 06:26:51,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:26:51,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 06:26:51,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:26:51,954 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 06:26:51,954 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 06:26:52,361 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 411 [2025-03-04 06:26:52,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 365 transitions, 746 flow. Second operand has 6 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 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) [2025-03-04 06:26:52,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 06:26:52,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 411 [2025-03-04 06:26:52,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 06:26:55,581 INFO L124 PetriNetUnfolderBase]: 5059/27341 cut-off events. [2025-03-04 06:26:55,581 INFO L125 PetriNetUnfolderBase]: For 1234/1234 co-relation queries the response was YES. [2025-03-04 06:26:55,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35979 conditions, 27341 events. 5059/27341 cut-off events. For 1234/1234 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 383144 event pairs, 1447 based on Foata normal form. 0/23958 useless extension candidates. Maximal degree in co-relation 35973. Up to 4079 conditions per place. [2025-03-04 06:26:55,792 INFO L140 encePairwiseOnDemand]: 384/411 looper letters, 96 selfloop transitions, 29 changer transitions 0/444 dead transitions. [2025-03-04 06:26:55,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 444 transitions, 1194 flow [2025-03-04 06:26:55,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 06:26:55,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 06:26:55,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2115 transitions. [2025-03-04 06:26:55,801 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8576642335766423 [2025-03-04 06:26:55,801 INFO L175 Difference]: Start difference. First operand has 367 places, 365 transitions, 746 flow. Second operand 6 states and 2115 transitions. [2025-03-04 06:26:55,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 444 transitions, 1194 flow [2025-03-04 06:26:55,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 444 transitions, 1194 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-04 06:26:55,815 INFO L231 Difference]: Finished difference. Result has 377 places, 393 transitions, 970 flow [2025-03-04 06:26:55,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=411, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=970, PETRI_PLACES=377, PETRI_TRANSITIONS=393} [2025-03-04 06:26:55,817 INFO L279 CegarLoopForPetriNet]: 403 programPoint places, -26 predicate places. [2025-03-04 06:26:55,817 INFO L471 AbstractCegarLoop]: Abstraction has has 377 places, 393 transitions, 970 flow [2025-03-04 06:26:55,818 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 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) [2025-03-04 06:26:55,818 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:55,819 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:55,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 06:26:55,819 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 57 more)] === [2025-03-04 06:26:55,819 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:55,819 INFO L85 PathProgramCache]: Analyzing trace with hash 820742534, now seen corresponding path program 1 times [2025-03-04 06:26:55,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:55,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260781944] [2025-03-04 06:26:55,820 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:55,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:55,839 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-04 06:26:55,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-04 06:26:55,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:55,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:55,864 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-04 06:26:55,868 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 105 statements into 1 equivalence classes. [2025-03-04 06:26:55,883 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 105 of 105 statements. [2025-03-04 06:26:55,883 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:55,884 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-04 06:26:55,904 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-04 06:26:55,904 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (60 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (59 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (58 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (57 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (56 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (55 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (54 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (53 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (52 of 61 remaining) [2025-03-04 06:26:55,905 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (51 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (50 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (49 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (48 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (47 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (46 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (45 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (44 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (43 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (42 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (41 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (40 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (39 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (38 of 61 remaining) [2025-03-04 06:26:55,906 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (37 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (36 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (35 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (34 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (33 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (32 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (31 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (30 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (29 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (28 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (27 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (26 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (25 of 61 remaining) [2025-03-04 06:26:55,907 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (24 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (23 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (22 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (21 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (19 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (18 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err14ASSERT_VIOLATIONDATA_RACE (14 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err9ASSERT_VIOLATIONDATA_RACE (13 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err13ASSERT_VIOLATIONDATA_RACE (12 of 61 remaining) [2025-03-04 06:26:55,908 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err12ASSERT_VIOLATIONDATA_RACE (11 of 61 remaining) [2025-03-04 06:26:55,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err11ASSERT_VIOLATIONDATA_RACE (10 of 61 remaining) [2025-03-04 06:26:55,909 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err10ASSERT_VIOLATIONDATA_RACE (9 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err8ASSERT_VIOLATIONDATA_RACE (8 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err7ASSERT_VIOLATIONDATA_RACE (7 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (6 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (5 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (4 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (3 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (2 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 61 remaining) [2025-03-04 06:26:55,910 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (0 of 61 remaining) [2025-03-04 06:26:55,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 06:26:55,910 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-04 06:26:55,911 WARN L246 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-04 06:26:55,911 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2025-03-04 06:26:55,986 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 06:26:55,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 506 places, 517 transitions, 1062 flow [2025-03-04 06:26:56,078 INFO L124 PetriNetUnfolderBase]: 20/551 cut-off events. [2025-03-04 06:26:56,078 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2025-03-04 06:26:56,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 570 conditions, 551 events. 20/551 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1989 event pairs, 0 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 444. Up to 5 conditions per place. [2025-03-04 06:26:56,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 506 places, 517 transitions, 1062 flow [2025-03-04 06:26:56,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 506 places, 517 transitions, 1062 flow [2025-03-04 06:26:56,099 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 06:26:56,100 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;@1581c403, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 06:26:56,100 INFO L334 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2025-03-04 06:26:56,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 06:26:56,107 INFO L124 PetriNetUnfolderBase]: 0/113 cut-off events. [2025-03-04 06:26:56,107 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 06:26:56,107 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:26:56,107 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:26:56,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err14ASSERT_VIOLATIONDATA_RACE === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2025-03-04 06:26:56,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:26:56,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1208885378, now seen corresponding path program 1 times [2025-03-04 06:26:56,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:26:56,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276559568] [2025-03-04 06:26:56,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:26:56,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:26:56,124 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-04 06:26:56,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-04 06:26:56,135 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:26:56,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:26:56,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:26:56,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:26:56,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276559568] [2025-03-04 06:26:56,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276559568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:26:56,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:26:56,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 06:26:56,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381496354] [2025-03-04 06:26:56,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:26:56,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 06:26:56,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:26:56,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 06:26:56,163 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 06:26:56,164 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 517 [2025-03-04 06:26:56,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 517 transitions, 1062 flow. Second operand has 2 states, 2 states have (on average 449.0) internal successors, (898), 2 states have internal predecessors, (898), 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) [2025-03-04 06:26:56,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 06:26:56,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 517 [2025-03-04 06:26:56,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 06:27:00,564 INFO L124 PetriNetUnfolderBase]: 4148/29055 cut-off events. [2025-03-04 06:27:00,564 INFO L125 PetriNetUnfolderBase]: For 3691/3691 co-relation queries the response was YES. [2025-03-04 06:27:00,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35489 conditions, 29055 events. 4148/29055 cut-off events. For 3691/3691 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 405730 event pairs, 3630 based on Foata normal form. 5402/30986 useless extension candidates. Maximal degree in co-relation 5459. Up to 5185 conditions per place. [2025-03-04 06:27:00,843 INFO L140 encePairwiseOnDemand]: 476/517 looper letters, 24 selfloop transitions, 0 changer transitions 0/457 dead transitions. [2025-03-04 06:27:00,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 457 transitions, 990 flow [2025-03-04 06:27:00,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 06:27:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2025-03-04 06:27:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 961 transitions. [2025-03-04 06:27:00,846 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9294003868471954 [2025-03-04 06:27:00,846 INFO L175 Difference]: Start difference. First operand has 506 places, 517 transitions, 1062 flow. Second operand 2 states and 961 transitions. [2025-03-04 06:27:00,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 457 transitions, 990 flow [2025-03-04 06:27:00,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 459 places, 457 transitions, 984 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-04 06:27:00,856 INFO L231 Difference]: Finished difference. Result has 459 places, 457 transitions, 936 flow [2025-03-04 06:27:00,857 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=517, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=457, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=936, PETRI_PLACES=459, PETRI_TRANSITIONS=457} [2025-03-04 06:27:00,859 INFO L279 CegarLoopForPetriNet]: 506 programPoint places, -47 predicate places. [2025-03-04 06:27:00,859 INFO L471 AbstractCegarLoop]: Abstraction has has 459 places, 457 transitions, 936 flow [2025-03-04 06:27:00,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 449.0) internal successors, (898), 2 states have internal predecessors, (898), 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) [2025-03-04 06:27:00,860 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 06:27:00,860 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 06:27:00,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-04 06:27:00,860 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err8ASSERT_VIOLATIONDATA_RACE === [thr1Err14ASSERT_VIOLATIONDATA_RACE, thr1Err9ASSERT_VIOLATIONDATA_RACE, thr1Err13ASSERT_VIOLATIONDATA_RACE, thr1Err12ASSERT_VIOLATIONDATA_RACE (and 72 more)] === [2025-03-04 06:27:00,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 06:27:00,861 INFO L85 PathProgramCache]: Analyzing trace with hash -856119316, now seen corresponding path program 1 times [2025-03-04 06:27:00,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 06:27:00,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505723731] [2025-03-04 06:27:00,862 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 06:27:00,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 06:27:00,880 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 101 statements into 1 equivalence classes. [2025-03-04 06:27:00,896 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 101 of 101 statements. [2025-03-04 06:27:00,897 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 06:27:00,897 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 06:27:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 06:27:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 06:27:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505723731] [2025-03-04 06:27:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505723731] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 06:27:01,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 06:27:01,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 06:27:01,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58239353] [2025-03-04 06:27:01,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 06:27:01,235 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 06:27:01,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 06:27:01,235 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 06:27:01,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-04 06:27:01,849 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 420 out of 517 [2025-03-04 06:27:01,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 457 transitions, 936 flow. Second operand has 6 states, 6 states have (on average 421.5) internal successors, (2529), 6 states have internal predecessors, (2529), 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) [2025-03-04 06:27:01,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 06:27:01,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 420 of 517 [2025-03-04 06:27:01,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand