./Ultimate.py --spec ../sv-benchmarks/c/properties/no-data-race.prp --file ../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-divine/ring_1w1r-1.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 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 11:02:48,604 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 11:02:48,644 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-17 11:02:48,647 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 11:02:48,647 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 11:02:48,666 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 11:02:48,667 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 11:02:48,668 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 11:02:48,668 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 11:02:48,668 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 11:02:48,668 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 11:02:48,669 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 11:02:48,669 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 11:02:48,669 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 11:02:48,669 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 11:02:48,669 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 11:02:48,669 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 11:02:48,670 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:02:48,670 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 11:02:48,670 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 11:02:48,671 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 11:02:48,671 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 11:02:48,671 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 11:02:48,671 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 11:02:48,671 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 11:02:48,671 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 -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2025-03-17 11:02:48,878 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 11:02:48,884 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 11:02:48,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 11:02:48,887 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 11:02:48,887 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 11:02:48,888 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-17 11:02:50,011 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db2ec90b/c17b0a370994413892b6c139231952bc/FLAGad1e839ca [2025-03-17 11:02:50,325 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 11:02:50,327 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-17 11:02:50,344 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db2ec90b/c17b0a370994413892b6c139231952bc/FLAGad1e839ca [2025-03-17 11:02:50,583 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9db2ec90b/c17b0a370994413892b6c139231952bc [2025-03-17 11:02:50,585 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 11:02:50,586 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 11:02:50,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 11:02:50,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 11:02:50,591 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 11:02:50,592 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:50,592 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3243bdaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50, skipping insertion in model container [2025-03-17 11:02:50,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:50,621 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 11:02:50,886 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:02:50,891 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 11:02:50,933 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 11:02:50,965 INFO L204 MainTranslator]: Completed translation [2025-03-17 11:02:50,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50 WrapperNode [2025-03-17 11:02:50,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 11:02:50,966 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 11:02:50,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 11:02:50,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 11:02:50,971 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:50,988 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,006 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 190 [2025-03-17 11:02:51,007 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 11:02:51,007 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 11:02:51,007 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 11:02:51,007 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 11:02:51,012 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,012 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,027 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,028 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,029 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,031 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 11:02:51,032 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 11:02:51,032 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 11:02:51,032 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 11:02:51,033 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (1/1) ... [2025-03-17 11:02:51,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 11:02:51,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 11:02:51,066 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 11:02:51,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 11:02:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-17 11:02:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-17 11:02:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-17 11:02:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-17 11:02:51,086 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 11:02:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-17 11:02:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2025-03-17 11:02:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2025-03-17 11:02:51,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 11:02:51,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 11:02:51,088 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 11:02:51,193 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 11:02:51,194 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 11:02:51,366 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L820: havoc ring_empty_#t~mem15#1; [2025-03-17 11:02:51,366 INFO L1322 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-1: havoc ring_empty_#t~mem14#1; [2025-03-17 11:02:51,527 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 11:02:51,527 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 11:02:51,539 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 11:02:51,539 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 11:02:51,539 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:02:51 BoogieIcfgContainer [2025-03-17 11:02:51,539 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 11:02:51,541 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 11:02:51,541 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 11:02:51,546 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 11:02:51,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 11:02:50" (1/3) ... [2025-03-17 11:02:51,546 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa7c3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:02:51, skipping insertion in model container [2025-03-17 11:02:51,546 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 11:02:50" (2/3) ... [2025-03-17 11:02:51,547 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1aa7c3f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 11:02:51, skipping insertion in model container [2025-03-17 11:02:51,547 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 11:02:51" (3/3) ... [2025-03-17 11:02:51,548 INFO L128 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2025-03-17 11:02:51,559 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 11:02:51,560 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ring_1w1r-1.i that has 2 procedures, 226 locations, 1 initial locations, 3 loop locations, and 14 error locations. [2025-03-17 11:02:51,560 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 11:02:51,657 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-17 11:02:51,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 235 transitions, 477 flow [2025-03-17 11:02:51,775 INFO L124 PetriNetUnfolderBase]: 10/234 cut-off events. [2025-03-17 11:02:51,780 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:02:51,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 234 events. 10/234 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 540 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 184. Up to 2 conditions per place. [2025-03-17 11:02:51,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 235 transitions, 477 flow [2025-03-17 11:02:51,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 228 transitions, 459 flow [2025-03-17 11:02:51,799 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 11:02:51,808 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;@2f6d825d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 11:02:51,808 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-17 11:02:51,815 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 11:02:51,816 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-03-17 11:02:51,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:02:51,816 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:51,817 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] [2025-03-17 11:02:51,817 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:51,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:51,822 INFO L85 PathProgramCache]: Analyzing trace with hash 2135704584, now seen corresponding path program 1 times [2025-03-17 11:02:51,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:51,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553298078] [2025-03-17 11:02:51,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:51,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:51,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-17 11:02:51,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-17 11:02:51,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:51,912 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:52,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:52,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:52,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553298078] [2025-03-17 11:02:52,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553298078] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:52,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:52,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:52,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009941463] [2025-03-17 11:02:52,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:52,367 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:52,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:52,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:52,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:52,699 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-17 11:02:52,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:52,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:52,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-17 11:02:52,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:53,098 INFO L124 PetriNetUnfolderBase]: 675/3079 cut-off events. [2025-03-17 11:02:53,099 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:02:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 3079 events. 675/3079 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 24253 event pairs, 576 based on Foata normal form. 206/2979 useless extension candidates. Maximal degree in co-relation 4315. Up to 1286 conditions per place. [2025-03-17 11:02:53,111 INFO L140 encePairwiseOnDemand]: 222/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2025-03-17 11:02:53,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 555 flow [2025-03-17 11:02:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:53,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:53,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2025-03-17 11:02:53,126 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7581560283687944 [2025-03-17 11:02:53,128 INFO L175 Difference]: Start difference. First operand has 222 places, 228 transitions, 459 flow. Second operand 6 states and 1069 transitions. [2025-03-17 11:02:53,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 555 flow [2025-03-17 11:02:53,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 11:02:53,136 INFO L231 Difference]: Finished difference. Result has 222 places, 217 transitions, 446 flow [2025-03-17 11:02:53,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=446, PETRI_PLACES=222, PETRI_TRANSITIONS=217} [2025-03-17 11:02:53,142 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 0 predicate places. [2025-03-17 11:02:53,142 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 217 transitions, 446 flow [2025-03-17 11:02:53,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:53,143 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:53,143 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] [2025-03-17 11:02:53,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 11:02:53,143 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:53,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:53,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1087096872, now seen corresponding path program 1 times [2025-03-17 11:02:53,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:53,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265688126] [2025-03-17 11:02:53,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:53,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:53,156 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-17 11:02:53,167 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-17 11:02:53,167 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:53,167 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:53,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:53,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:53,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265688126] [2025-03-17 11:02:53,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265688126] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:53,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:53,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:53,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418947047] [2025-03-17 11:02:53,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:53,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:53,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:53,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:53,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:53,654 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-17 11:02:53,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 217 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:53,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:53,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-17 11:02:53,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:53,894 INFO L124 PetriNetUnfolderBase]: 675/3078 cut-off events. [2025-03-17 11:02:53,894 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 11:02:53,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4378 conditions, 3078 events. 675/3078 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 24229 event pairs, 576 based on Foata normal form. 0/2773 useless extension candidates. Maximal degree in co-relation 4327. Up to 1286 conditions per place. [2025-03-17 11:02:53,903 INFO L140 encePairwiseOnDemand]: 229/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2025-03-17 11:02:53,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 216 transitions, 562 flow [2025-03-17 11:02:53,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:53,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:53,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2025-03-17 11:02:53,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7531914893617021 [2025-03-17 11:02:53,906 INFO L175 Difference]: Start difference. First operand has 222 places, 217 transitions, 446 flow. Second operand 6 states and 1062 transitions. [2025-03-17 11:02:53,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 216 transitions, 562 flow [2025-03-17 11:02:53,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 552 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:02:53,909 INFO L231 Difference]: Finished difference. Result has 221 places, 216 transitions, 444 flow [2025-03-17 11:02:53,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=444, PETRI_PLACES=221, PETRI_TRANSITIONS=216} [2025-03-17 11:02:53,909 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2025-03-17 11:02:53,909 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 444 flow [2025-03-17 11:02:53,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 168.33333333333334) internal successors, (1010), 6 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:53,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:53,910 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] [2025-03-17 11:02:53,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 11:02:53,910 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:53,910 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:53,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1303200559, now seen corresponding path program 1 times [2025-03-17 11:02:53,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:53,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840233625] [2025-03-17 11:02:53,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:53,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:53,926 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-17 11:02:53,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-17 11:02:53,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:53,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:54,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:54,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840233625] [2025-03-17 11:02:54,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840233625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:54,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:54,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:54,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347187304] [2025-03-17 11:02:54,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:54,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:54,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:54,163 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:54,164 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:54,544 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 235 [2025-03-17 11:02:54,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 216 transitions, 444 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:54,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:54,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 235 [2025-03-17 11:02:54,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:54,788 INFO L124 PetriNetUnfolderBase]: 311/2118 cut-off events. [2025-03-17 11:02:54,788 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 11:02:54,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2717 conditions, 2118 events. 311/2118 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 14666 event pairs, 64 based on Foata normal form. 0/1898 useless extension candidates. Maximal degree in co-relation 2665. Up to 452 conditions per place. [2025-03-17 11:02:54,797 INFO L140 encePairwiseOnDemand]: 214/235 looper letters, 39 selfloop transitions, 43 changer transitions 0/261 dead transitions. [2025-03-17 11:02:54,797 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 261 transitions, 698 flow [2025-03-17 11:02:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:54,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2025-03-17 11:02:54,802 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8680851063829788 [2025-03-17 11:02:54,802 INFO L175 Difference]: Start difference. First operand has 221 places, 216 transitions, 444 flow. Second operand 6 states and 1224 transitions. [2025-03-17 11:02:54,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 261 transitions, 698 flow [2025-03-17 11:02:54,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 261 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 11:02:54,808 INFO L231 Difference]: Finished difference. Result has 226 places, 258 transitions, 730 flow [2025-03-17 11:02:54,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=730, PETRI_PLACES=226, PETRI_TRANSITIONS=258} [2025-03-17 11:02:54,808 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 4 predicate places. [2025-03-17 11:02:54,808 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 258 transitions, 730 flow [2025-03-17 11:02:54,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:54,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:54,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 11:02:54,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 11:02:54,809 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:54,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:54,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1390180085, now seen corresponding path program 1 times [2025-03-17 11:02:54,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:54,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418922028] [2025-03-17 11:02:54,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:54,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:54,826 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-17 11:02:54,833 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-17 11:02:54,833 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:54,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:54,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:02:54,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418922028] [2025-03-17 11:02:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418922028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:54,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:54,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 11:02:54,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368997027] [2025-03-17 11:02:54,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:54,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 11:02:54,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:54,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 11:02:54,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 11:02:54,876 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 235 [2025-03-17 11:02:54,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 258 transitions, 730 flow. Second operand has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:54,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:54,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 235 [2025-03-17 11:02:54,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:55,062 INFO L124 PetriNetUnfolderBase]: 353/2439 cut-off events. [2025-03-17 11:02:55,063 INFO L125 PetriNetUnfolderBase]: For 222/234 co-relation queries the response was YES. [2025-03-17 11:02:55,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3604 conditions, 2439 events. 353/2439 cut-off events. For 222/234 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 16847 event pairs, 16 based on Foata normal form. 1/2242 useless extension candidates. Maximal degree in co-relation 3552. Up to 342 conditions per place. [2025-03-17 11:02:55,077 INFO L140 encePairwiseOnDemand]: 232/235 looper letters, 3 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2025-03-17 11:02:55,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 742 flow [2025-03-17 11:02:55,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 11:02:55,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 11:02:55,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2025-03-17 11:02:55,079 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9574468085106383 [2025-03-17 11:02:55,079 INFO L175 Difference]: Start difference. First operand has 226 places, 258 transitions, 730 flow. Second operand 3 states and 675 transitions. [2025-03-17 11:02:55,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 742 flow [2025-03-17 11:02:55,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 259 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:02:55,084 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 742 flow [2025-03-17 11:02:55,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=742, PETRI_PLACES=229, PETRI_TRANSITIONS=259} [2025-03-17 11:02:55,085 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2025-03-17 11:02:55,085 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 742 flow [2025-03-17 11:02:55,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.0) internal successors, (672), 3 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:55,086 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:55,086 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] [2025-03-17 11:02:55,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 11:02:55,086 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:55,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:55,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1524353008, now seen corresponding path program 1 times [2025-03-17 11:02:55,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:55,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127758412] [2025-03-17 11:02:55,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:55,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:55,099 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-17 11:02:55,105 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-17 11:02:55,105 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:55,105 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:55,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:02:55,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:55,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127758412] [2025-03-17 11:02:55,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127758412] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:55,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:55,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:55,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959627822] [2025-03-17 11:02:55,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:55,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:55,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:55,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:55,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:55,715 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 235 [2025-03-17 11:02:55,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 259 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:55,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:55,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 235 [2025-03-17 11:02:55,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:56,180 INFO L124 PetriNetUnfolderBase]: 810/5029 cut-off events. [2025-03-17 11:02:56,180 INFO L125 PetriNetUnfolderBase]: For 953/1125 co-relation queries the response was YES. [2025-03-17 11:02:56,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8316 conditions, 5029 events. 810/5029 cut-off events. For 953/1125 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 43692 event pairs, 132 based on Foata normal form. 68/4764 useless extension candidates. Maximal degree in co-relation 8254. Up to 1061 conditions per place. [2025-03-17 11:02:56,200 INFO L140 encePairwiseOnDemand]: 211/235 looper letters, 81 selfloop transitions, 45 changer transitions 0/309 dead transitions. [2025-03-17 11:02:56,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 309 transitions, 1154 flow [2025-03-17 11:02:56,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:56,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2025-03-17 11:02:56,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8425531914893617 [2025-03-17 11:02:56,202 INFO L175 Difference]: Start difference. First operand has 229 places, 259 transitions, 742 flow. Second operand 6 states and 1188 transitions. [2025-03-17 11:02:56,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 309 transitions, 1154 flow [2025-03-17 11:02:56,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 309 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 11:02:56,210 INFO L231 Difference]: Finished difference. Result has 238 places, 303 transitions, 1132 flow [2025-03-17 11:02:56,212 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=740, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1132, PETRI_PLACES=238, PETRI_TRANSITIONS=303} [2025-03-17 11:02:56,213 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 16 predicate places. [2025-03-17 11:02:56,213 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 303 transitions, 1132 flow [2025-03-17 11:02:56,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 186.66666666666666) internal successors, (1120), 6 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:56,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:56,213 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] [2025-03-17 11:02:56,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 11:02:56,213 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:56,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash -713869866, now seen corresponding path program 1 times [2025-03-17 11:02:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55678705] [2025-03-17 11:02:56,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:56,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:56,228 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-17 11:02:56,233 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-17 11:02:56,233 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:56,233 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:56,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:02:56,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:56,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55678705] [2025-03-17 11:02:56,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55678705] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:56,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:56,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:56,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959002437] [2025-03-17 11:02:56,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:56,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:56,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:56,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:56,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:56,979 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 235 [2025-03-17 11:02:56,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 303 transitions, 1132 flow. Second operand has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:56,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:56,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 235 [2025-03-17 11:02:56,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:57,705 INFO L124 PetriNetUnfolderBase]: 1090/6744 cut-off events. [2025-03-17 11:02:57,705 INFO L125 PetriNetUnfolderBase]: For 5273/6178 co-relation queries the response was YES. [2025-03-17 11:02:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13068 conditions, 6744 events. 1090/6744 cut-off events. For 5273/6178 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 63283 event pairs, 149 based on Foata normal form. 185/6486 useless extension candidates. Maximal degree in co-relation 13002. Up to 1442 conditions per place. [2025-03-17 11:02:57,742 INFO L140 encePairwiseOnDemand]: 220/235 looper letters, 94 selfloop transitions, 78 changer transitions 0/380 dead transitions. [2025-03-17 11:02:57,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 380 transitions, 1934 flow [2025-03-17 11:02:57,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:57,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:57,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2025-03-17 11:02:57,745 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8794326241134752 [2025-03-17 11:02:57,745 INFO L175 Difference]: Start difference. First operand has 238 places, 303 transitions, 1132 flow. Second operand 6 states and 1240 transitions. [2025-03-17 11:02:57,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 380 transitions, 1934 flow [2025-03-17 11:02:57,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 380 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:02:57,758 INFO L231 Difference]: Finished difference. Result has 248 places, 380 transitions, 1950 flow [2025-03-17 11:02:57,758 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=279, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1950, PETRI_PLACES=248, PETRI_TRANSITIONS=380} [2025-03-17 11:02:57,759 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2025-03-17 11:02:57,759 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 380 transitions, 1950 flow [2025-03-17 11:02:57,760 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 197.83333333333334) internal successors, (1187), 6 states have internal predecessors, (1187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:57,760 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:57,760 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] [2025-03-17 11:02:57,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 11:02:57,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:57,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:57,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1791761608, now seen corresponding path program 1 times [2025-03-17 11:02:57,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:57,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442123217] [2025-03-17 11:02:57,761 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:57,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:57,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-17 11:02:57,780 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-17 11:02:57,780 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:57,781 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:57,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:02:57,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:57,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442123217] [2025-03-17 11:02:57,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442123217] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:57,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:57,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:57,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801790563] [2025-03-17 11:02:57,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:57,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:57,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:57,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:57,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:58,438 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 235 [2025-03-17 11:02:58,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 380 transitions, 1950 flow. Second operand has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:58,439 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:58,439 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 235 [2025-03-17 11:02:58,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:02:59,047 INFO L124 PetriNetUnfolderBase]: 1172/7362 cut-off events. [2025-03-17 11:02:59,047 INFO L125 PetriNetUnfolderBase]: For 6160/6705 co-relation queries the response was YES. [2025-03-17 11:02:59,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15136 conditions, 7362 events. 1172/7362 cut-off events. For 6160/6705 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 70565 event pairs, 87 based on Foata normal form. 186/7133 useless extension candidates. Maximal degree in co-relation 15065. Up to 1090 conditions per place. [2025-03-17 11:02:59,080 INFO L140 encePairwiseOnDemand]: 224/235 looper letters, 103 selfloop transitions, 66 changer transitions 0/445 dead transitions. [2025-03-17 11:02:59,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 445 transitions, 2720 flow [2025-03-17 11:02:59,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:02:59,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:02:59,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1258 transitions. [2025-03-17 11:02:59,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8921985815602836 [2025-03-17 11:02:59,083 INFO L175 Difference]: Start difference. First operand has 248 places, 380 transitions, 1950 flow. Second operand 6 states and 1258 transitions. [2025-03-17 11:02:59,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 445 transitions, 2720 flow [2025-03-17 11:02:59,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 445 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:02:59,100 INFO L231 Difference]: Finished difference. Result has 258 places, 442 transitions, 2712 flow [2025-03-17 11:02:59,100 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1950, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2712, PETRI_PLACES=258, PETRI_TRANSITIONS=442} [2025-03-17 11:02:59,101 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2025-03-17 11:02:59,101 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 442 transitions, 2712 flow [2025-03-17 11:02:59,101 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 203.66666666666666) internal successors, (1222), 6 states have internal predecessors, (1222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:59,102 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:02:59,102 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] [2025-03-17 11:02:59,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 11:02:59,102 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting reader_nowait_fnErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:02:59,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:02:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1164607945, now seen corresponding path program 1 times [2025-03-17 11:02:59,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:02:59,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127317859] [2025-03-17 11:02:59,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:02:59,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:02:59,118 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-17 11:02:59,127 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-17 11:02:59,127 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:02:59,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:02:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:02:59,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:02:59,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127317859] [2025-03-17 11:02:59,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127317859] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:02:59,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:02:59,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:02:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052676163] [2025-03-17 11:02:59,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:02:59,428 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:02:59,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:02:59,428 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:02:59,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:02:59,662 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-17 11:02:59,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 442 transitions, 2712 flow. Second operand has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:02:59,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:02:59,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-17 11:02:59,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:01,469 INFO L124 PetriNetUnfolderBase]: 5261/16665 cut-off events. [2025-03-17 11:03:01,469 INFO L125 PetriNetUnfolderBase]: For 19065/19365 co-relation queries the response was YES. [2025-03-17 11:03:01,510 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44613 conditions, 16665 events. 5261/16665 cut-off events. For 19065/19365 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 158568 event pairs, 2287 based on Foata normal form. 50/15799 useless extension candidates. Maximal degree in co-relation 44537. Up to 9666 conditions per place. [2025-03-17 11:03:01,552 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 260 selfloop transitions, 156 changer transitions 0/573 dead transitions. [2025-03-17 11:03:01,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 573 transitions, 4280 flow [2025-03-17 11:03:01,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:03:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:03:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-17 11:03:01,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-17 11:03:01,555 INFO L175 Difference]: Start difference. First operand has 258 places, 442 transitions, 2712 flow. Second operand 6 states and 1134 transitions. [2025-03-17 11:03:01,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 573 transitions, 4280 flow [2025-03-17 11:03:01,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 573 transitions, 4280 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 11:03:01,727 INFO L231 Difference]: Finished difference. Result has 268 places, 573 transitions, 4180 flow [2025-03-17 11:03:01,728 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2712, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4180, PETRI_PLACES=268, PETRI_TRANSITIONS=573} [2025-03-17 11:03:01,728 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 46 predicate places. [2025-03-17 11:03:01,728 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 573 transitions, 4180 flow [2025-03-17 11:03:01,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.16666666666666) internal successors, (997), 6 states have internal predecessors, (997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:01,729 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:01,729 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] [2025-03-17 11:03:01,729 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 11:03:01,729 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:03:01,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:01,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1216698873, now seen corresponding path program 1 times [2025-03-17 11:03:01,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:01,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975287384] [2025-03-17 11:03:01,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:03:01,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:01,744 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-17 11:03:01,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-17 11:03:01,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:03:01,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:02,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:03:02,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:02,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975287384] [2025-03-17 11:03:02,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975287384] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:02,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:02,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 11:03:02,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628428570] [2025-03-17 11:03:02,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:02,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 11:03:02,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:02,061 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 11:03:02,061 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-17 11:03:02,322 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-17 11:03:02,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 573 transitions, 4180 flow. Second operand has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:02,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:02,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-17 11:03:02,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:04,748 INFO L124 PetriNetUnfolderBase]: 5567/17507 cut-off events. [2025-03-17 11:03:04,748 INFO L125 PetriNetUnfolderBase]: For 29099/29353 co-relation queries the response was YES. [2025-03-17 11:03:04,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52930 conditions, 17507 events. 5567/17507 cut-off events. For 29099/29353 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 167742 event pairs, 2232 based on Foata normal form. 12/16658 useless extension candidates. Maximal degree in co-relation 52849. Up to 9984 conditions per place. [2025-03-17 11:03:04,823 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 372 selfloop transitions, 167 changer transitions 0/700 dead transitions. [2025-03-17 11:03:04,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 700 transitions, 5924 flow [2025-03-17 11:03:04,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 11:03:04,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 11:03:04,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-17 11:03:04,825 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-17 11:03:04,825 INFO L175 Difference]: Start difference. First operand has 268 places, 573 transitions, 4180 flow. Second operand 6 states and 1134 transitions. [2025-03-17 11:03:04,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 700 transitions, 5924 flow [2025-03-17 11:03:04,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 700 transitions, 5692 flow, removed 116 selfloop flow, removed 0 redundant places. [2025-03-17 11:03:04,908 INFO L231 Difference]: Finished difference. Result has 278 places, 700 transitions, 5388 flow [2025-03-17 11:03:04,909 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3960, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=573, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5388, PETRI_PLACES=278, PETRI_TRANSITIONS=700} [2025-03-17 11:03:04,910 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 56 predicate places. [2025-03-17 11:03:04,910 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 700 transitions, 5388 flow [2025-03-17 11:03:04,910 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 166.0) internal successors, (996), 6 states have internal predecessors, (996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:04,910 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:04,911 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] [2025-03-17 11:03:04,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 11:03:04,911 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:03:04,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:04,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1511236182, now seen corresponding path program 1 times [2025-03-17 11:03:04,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:04,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924055192] [2025-03-17 11:03:04,912 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 11:03:04,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:04,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-17 11:03:04,928 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-17 11:03:04,929 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 11:03:04,929 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:06,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 11:03:06,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:06,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924055192] [2025-03-17 11:03:06,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924055192] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:06,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:06,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-17 11:03:06,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260554328] [2025-03-17 11:03:06,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:06,911 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-17 11:03:06,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:06,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-17 11:03:06,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-03-17 11:03:10,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 235 [2025-03-17 11:03:10,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 700 transitions, 5388 flow. Second operand has 24 states, 24 states have (on average 155.66666666666666) internal successors, (3736), 24 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:10,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:10,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 235 [2025-03-17 11:03:10,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:15,906 INFO L124 PetriNetUnfolderBase]: 6272/25435 cut-off events. [2025-03-17 11:03:15,907 INFO L125 PetriNetUnfolderBase]: For 52918/54410 co-relation queries the response was YES. [2025-03-17 11:03:16,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75264 conditions, 25435 events. 6272/25435 cut-off events. For 52918/54410 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 289054 event pairs, 825 based on Foata normal form. 329/24727 useless extension candidates. Maximal degree in co-relation 75170. Up to 7429 conditions per place. [2025-03-17 11:03:16,110 INFO L140 encePairwiseOnDemand]: 196/235 looper letters, 976 selfloop transitions, 193 changer transitions 0/1447 dead transitions. [2025-03-17 11:03:16,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1447 transitions, 13948 flow [2025-03-17 11:03:16,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-17 11:03:16,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-17 11:03:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5762 transitions. [2025-03-17 11:03:16,121 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7005471124620061 [2025-03-17 11:03:16,121 INFO L175 Difference]: Start difference. First operand has 278 places, 700 transitions, 5388 flow. Second operand 35 states and 5762 transitions. [2025-03-17 11:03:16,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1447 transitions, 13948 flow [2025-03-17 11:03:16,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1447 transitions, 13792 flow, removed 78 selfloop flow, removed 0 redundant places. [2025-03-17 11:03:16,366 INFO L231 Difference]: Finished difference. Result has 337 places, 901 transitions, 8389 flow [2025-03-17 11:03:16,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5232, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=700, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=8389, PETRI_PLACES=337, PETRI_TRANSITIONS=901} [2025-03-17 11:03:16,367 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 115 predicate places. [2025-03-17 11:03:16,367 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 901 transitions, 8389 flow [2025-03-17 11:03:16,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 155.66666666666666) internal successors, (3736), 24 states have internal predecessors, (3736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:16,369 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:16,369 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] [2025-03-17 11:03:16,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 11:03:16,369 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:03:16,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:16,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1291657850, now seen corresponding path program 2 times [2025-03-17 11:03:16,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:16,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246877943] [2025-03-17 11:03:16,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 11:03:16,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:16,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-17 11:03:16,406 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 88 of 95 statements. [2025-03-17 11:03:16,407 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 11:03:16,407 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:18,492 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:03:18,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:18,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246877943] [2025-03-17 11:03:18,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246877943] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:18,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:18,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-03-17 11:03:18,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986723173] [2025-03-17 11:03:18,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:18,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-17 11:03:18,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:18,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-17 11:03:18,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2025-03-17 11:03:21,381 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-17 11:03:21,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 901 transitions, 8389 flow. Second operand has 20 states, 20 states have (on average 162.65) internal successors, (3253), 20 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:21,384 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:21,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-17 11:03:21,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 11:03:37,752 INFO L124 PetriNetUnfolderBase]: 23448/86477 cut-off events. [2025-03-17 11:03:37,752 INFO L125 PetriNetUnfolderBase]: For 254669/262377 co-relation queries the response was YES. [2025-03-17 11:03:38,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287979 conditions, 86477 events. 23448/86477 cut-off events. For 254669/262377 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 1169145 event pairs, 4115 based on Foata normal form. 1154/84550 useless extension candidates. Maximal degree in co-relation 287858. Up to 12635 conditions per place. [2025-03-17 11:03:38,960 INFO L140 encePairwiseOnDemand]: 194/235 looper letters, 2082 selfloop transitions, 244 changer transitions 0/2618 dead transitions. [2025-03-17 11:03:38,961 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2618 transitions, 30225 flow [2025-03-17 11:03:38,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-17 11:03:38,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-17 11:03:38,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3144 transitions. [2025-03-17 11:03:38,965 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7869837296620776 [2025-03-17 11:03:38,965 INFO L175 Difference]: Start difference. First operand has 337 places, 901 transitions, 8389 flow. Second operand 17 states and 3144 transitions. [2025-03-17 11:03:38,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2618 transitions, 30225 flow [2025-03-17 11:03:40,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 2618 transitions, 30184 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-17 11:03:40,376 INFO L231 Difference]: Finished difference. Result has 360 places, 1138 transitions, 13118 flow [2025-03-17 11:03:40,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8348, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=901, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13118, PETRI_PLACES=360, PETRI_TRANSITIONS=1138} [2025-03-17 11:03:40,377 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 138 predicate places. [2025-03-17 11:03:40,377 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1138 transitions, 13118 flow [2025-03-17 11:03:40,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 162.65) internal successors, (3253), 20 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:40,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 11:03:40,378 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] [2025-03-17 11:03:40,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 11:03:40,379 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr5ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2025-03-17 11:03:40,379 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 11:03:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -1204631228, now seen corresponding path program 3 times [2025-03-17 11:03:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 11:03:40,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686941399] [2025-03-17 11:03:40,379 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-17 11:03:40,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 11:03:40,389 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 2 equivalence classes. [2025-03-17 11:03:40,393 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 88 of 95 statements. [2025-03-17 11:03:40,393 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-17 11:03:40,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 11:03:41,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 11:03:41,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 11:03:41,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686941399] [2025-03-17 11:03:41,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686941399] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 11:03:41,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 11:03:41,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-17 11:03:41,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073207726] [2025-03-17 11:03:41,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 11:03:41,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-17 11:03:41,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 11:03:41,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-17 11:03:41,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-03-17 11:03:43,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 235 [2025-03-17 11:03:43,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 1138 transitions, 13118 flow. Second operand has 18 states, 18 states have (on average 166.61111111111111) internal successors, (2999), 18 states have internal predecessors, (2999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 11:03:43,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 11:03:43,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 235 [2025-03-17 11:03:43,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand