./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 f8ab0bd5 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-?-f8ab0bd-m [2025-03-13 22:14:06,557 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-13 22:14:06,603 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-13 22:14:06,609 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-13 22:14:06,609 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-13 22:14:06,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-13 22:14:06,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-13 22:14:06,632 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-13 22:14:06,632 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Use SBE=true [2025-03-13 22:14:06,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-13 22:14:06,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-13 22:14:06,633 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:14:06,633 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-13 22:14:06,633 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-13 22:14:06,634 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-13 22:14:06,634 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-13 22:14:06,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-13 22:14:06,635 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-13 22:14:06,635 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-13 22:14:06,635 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-13 22:14:06,635 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-13 22:14:06,635 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 [2025-03-13 22:14:06,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-13 22:14:06,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-13 22:14:06,881 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-13 22:14:06,882 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-13 22:14:06,882 INFO L274 PluginConnector]: CDTParser initialized [2025-03-13 22:14:06,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-13 22:14:08,037 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c497b19d5/8ad2d0b10ce94a31a523ef09c21259b1/FLAGb39530dc7 [2025-03-13 22:14:08,397 INFO L384 CDTParser]: Found 1 translation units. [2025-03-13 22:14:08,397 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-13 22:14:08,408 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c497b19d5/8ad2d0b10ce94a31a523ef09c21259b1/FLAGb39530dc7 [2025-03-13 22:14:08,632 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c497b19d5/8ad2d0b10ce94a31a523ef09c21259b1 [2025-03-13 22:14:08,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-13 22:14:08,637 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-13 22:14:08,638 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-13 22:14:08,638 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-13 22:14:08,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-13 22:14:08,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:08,643 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52f9528b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08, skipping insertion in model container [2025-03-13 22:14:08,643 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:08,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-13 22:14:08,884 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:14:08,889 INFO L200 MainTranslator]: Completed pre-run [2025-03-13 22:14:08,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-13 22:14:08,949 INFO L204 MainTranslator]: Completed translation [2025-03-13 22:14:08,949 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08 WrapperNode [2025-03-13 22:14:08,950 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-13 22:14:08,950 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-13 22:14:08,950 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-13 22:14:08,950 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-13 22:14:08,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:08,968 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:08,992 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 190 [2025-03-13 22:14:08,993 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-13 22:14:08,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-13 22:14:08,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-13 22:14:08,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-13 22:14:08,998 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:08,999 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,001 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,002 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,011 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,012 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,014 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,015 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-13 22:14:09,018 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-13 22:14:09,018 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-13 22:14:09,018 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-13 22:14:09,019 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (1/1) ... [2025-03-13 22:14:09,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-13 22:14:09,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-13 22:14:09,047 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) [2025-03-13 22:14:09,050 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 [2025-03-13 22:14:09,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2025-03-13 22:14:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2025-03-13 22:14:09,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-13 22:14:09,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-13 22:14:09,071 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-13 22:14:09,187 INFO L256 CfgBuilder]: Building ICFG [2025-03-13 22:14:09,189 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-13 22:14:09,443 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L820: havoc ring_empty_#t~mem15#1; [2025-03-13 22:14:09,444 INFO L1326 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-1: havoc ring_empty_#t~mem14#1; [2025-03-13 22:14:09,575 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-13 22:14:09,575 INFO L313 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-13 22:14:09,575 INFO L318 CfgBuilder]: Performing block encoding [2025-03-13 22:14:09,585 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-13 22:14:09,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:14:09 BoogieIcfgContainer [2025-03-13 22:14:09,586 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-13 22:14:09,587 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-13 22:14:09,587 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-13 22:14:09,592 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-13 22:14:09,592 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.03 10:14:08" (1/3) ... [2025-03-13 22:14:09,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f723cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:14:09, skipping insertion in model container [2025-03-13 22:14:09,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.03 10:14:08" (2/3) ... [2025-03-13 22:14:09,593 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f723cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.03 10:14:09, skipping insertion in model container [2025-03-13 22:14:09,593 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 13.03 10:14:09" (3/3) ... [2025-03-13 22:14:09,595 INFO L128 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2025-03-13 22:14:09,607 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-13 22:14:09,608 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. [2025-03-13 22:14:09,608 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-13 22:14:09,711 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-13 22:14:09,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 235 transitions, 477 flow [2025-03-13 22:14:09,810 INFO L124 PetriNetUnfolderBase]: 10/234 cut-off events. [2025-03-13 22:14:09,813 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 22:14:09,823 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 537 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. [2025-03-13 22:14:09,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 235 transitions, 477 flow [2025-03-13 22:14:09,829 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 228 transitions, 459 flow [2025-03-13 22:14:09,835 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-13 22:14:09,842 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;@5174e982, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-13 22:14:09,845 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-13 22:14:09,850 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-13 22:14:09,850 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-03-13 22:14:09,850 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:14:09,850 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:09,851 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] [2025-03-13 22:14:09,851 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)] === [2025-03-13 22:14:09,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:09,855 INFO L85 PathProgramCache]: Analyzing trace with hash 901856057, now seen corresponding path program 1 times [2025-03-13 22:14:09,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:09,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035129528] [2025-03-13 22:14:09,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:09,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:09,921 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-13 22:14:09,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-13 22:14:09,942 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:09,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:10,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:14:10,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:10,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035129528] [2025-03-13 22:14:10,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035129528] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:10,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:10,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:10,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937117491] [2025-03-13 22:14:10,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:10,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:10,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:10,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:10,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:10,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-13 22:14:10,708 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) [2025-03-13 22:14:10,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:10,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-13 22:14:10,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:11,109 INFO L124 PetriNetUnfolderBase]: 675/3079 cut-off events. [2025-03-13 22:14:11,109 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 22:14:11,117 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 24220 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. [2025-03-13 22:14:11,128 INFO L140 encePairwiseOnDemand]: 222/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2025-03-13 22:14:11,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 555 flow [2025-03-13 22:14:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:11,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:11,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2025-03-13 22:14:11,145 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7581560283687944 [2025-03-13 22:14:11,148 INFO L175 Difference]: Start difference. First operand has 222 places, 228 transitions, 459 flow. Second operand 6 states and 1069 transitions. [2025-03-13 22:14:11,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 555 flow [2025-03-13 22:14:11,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 22:14:11,158 INFO L231 Difference]: Finished difference. Result has 222 places, 217 transitions, 446 flow [2025-03-13 22:14:11,160 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} [2025-03-13 22:14:11,162 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 0 predicate places. [2025-03-13 22:14:11,162 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 217 transitions, 446 flow [2025-03-13 22:14:11,163 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) [2025-03-13 22:14:11,163 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:11,163 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] [2025-03-13 22:14:11,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-13 22:14:11,163 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)] === [2025-03-13 22:14:11,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:11,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1141984178, now seen corresponding path program 1 times [2025-03-13 22:14:11,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:11,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429253062] [2025-03-13 22:14:11,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:11,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:11,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-13 22:14:11,182 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-13 22:14:11,182 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:11,183 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:11,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:14:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:11,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429253062] [2025-03-13 22:14:11,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429253062] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:11,450 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:11,450 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:11,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382424331] [2025-03-13 22:14:11,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:11,451 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:11,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:11,452 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:11,452 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:11,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-13 22:14:11,674 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) [2025-03-13 22:14:11,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:11,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-13 22:14:11,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:11,960 INFO L124 PetriNetUnfolderBase]: 675/3078 cut-off events. [2025-03-13 22:14:11,961 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-13 22:14:11,964 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 24315 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. [2025-03-13 22:14:11,971 INFO L140 encePairwiseOnDemand]: 229/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2025-03-13 22:14:11,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 216 transitions, 562 flow [2025-03-13 22:14:11,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:11,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:11,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2025-03-13 22:14:11,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7531914893617021 [2025-03-13 22:14:11,973 INFO L175 Difference]: Start difference. First operand has 222 places, 217 transitions, 446 flow. Second operand 6 states and 1062 transitions. [2025-03-13 22:14:11,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 216 transitions, 562 flow [2025-03-13 22:14:11,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 552 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-13 22:14:11,977 INFO L231 Difference]: Finished difference. Result has 221 places, 216 transitions, 444 flow [2025-03-13 22:14:11,977 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} [2025-03-13 22:14:11,978 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2025-03-13 22:14:11,978 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 444 flow [2025-03-13 22:14:11,978 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) [2025-03-13 22:14:11,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:11,979 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] [2025-03-13 22:14:11,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-13 22:14:11,979 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)] === [2025-03-13 22:14:11,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:11,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1467489712, now seen corresponding path program 1 times [2025-03-13 22:14:11,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:11,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042535271] [2025-03-13 22:14:11,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:11,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:11,989 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-13 22:14:12,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-13 22:14:12,001 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:12,001 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:14:12,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:12,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042535271] [2025-03-13 22:14:12,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042535271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:12,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:12,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:12,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087901241] [2025-03-13 22:14:12,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:12,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:12,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:12,247 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:12,247 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:12,626 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 235 [2025-03-13 22:14:12,628 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) [2025-03-13 22:14:12,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:12,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 235 [2025-03-13 22:14:12,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:12,915 INFO L124 PetriNetUnfolderBase]: 311/2118 cut-off events. [2025-03-13 22:14:12,916 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-13 22:14:12,921 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 14685 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. [2025-03-13 22:14:12,926 INFO L140 encePairwiseOnDemand]: 214/235 looper letters, 39 selfloop transitions, 43 changer transitions 0/261 dead transitions. [2025-03-13 22:14:12,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 261 transitions, 698 flow [2025-03-13 22:14:12,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:12,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2025-03-13 22:14:12,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8680851063829788 [2025-03-13 22:14:12,932 INFO L175 Difference]: Start difference. First operand has 221 places, 216 transitions, 444 flow. Second operand 6 states and 1224 transitions. [2025-03-13 22:14:12,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 261 transitions, 698 flow [2025-03-13 22:14:12,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 261 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-13 22:14:12,940 INFO L231 Difference]: Finished difference. Result has 226 places, 258 transitions, 730 flow [2025-03-13 22:14:12,941 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} [2025-03-13 22:14:12,942 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 4 predicate places. [2025-03-13 22:14:12,942 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 258 transitions, 730 flow [2025-03-13 22:14:12,942 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) [2025-03-13 22:14:12,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:12,943 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] [2025-03-13 22:14:12,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-13 22:14:12,943 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)] === [2025-03-13 22:14:12,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:12,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1382232564, now seen corresponding path program 1 times [2025-03-13 22:14:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:12,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833104725] [2025-03-13 22:14:12,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:12,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:12,955 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-13 22:14:12,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-13 22:14:12,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:12,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:13,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-13 22:14:13,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:13,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833104725] [2025-03-13 22:14:13,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833104725] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:13,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:13,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-13 22:14:13,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605497044] [2025-03-13 22:14:13,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:13,007 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-13 22:14:13,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:13,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-13 22:14:13,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-13 22:14:13,013 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 235 [2025-03-13 22:14:13,014 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) [2025-03-13 22:14:13,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:13,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 235 [2025-03-13 22:14:13,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:13,187 INFO L124 PetriNetUnfolderBase]: 297/2369 cut-off events. [2025-03-13 22:14:13,188 INFO L125 PetriNetUnfolderBase]: For 238/272 co-relation queries the response was YES. [2025-03-13 22:14:13,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3464 conditions, 2369 events. 297/2369 cut-off events. For 238/272 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 16879 event pairs, 16 based on Foata normal form. 1/2172 useless extension candidates. Maximal degree in co-relation 3412. Up to 342 conditions per place. [2025-03-13 22:14:13,198 INFO L140 encePairwiseOnDemand]: 232/235 looper letters, 3 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2025-03-13 22:14:13,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 742 flow [2025-03-13 22:14:13,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-13 22:14:13,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-13 22:14:13,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2025-03-13 22:14:13,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9574468085106383 [2025-03-13 22:14:13,200 INFO L175 Difference]: Start difference. First operand has 226 places, 258 transitions, 730 flow. Second operand 3 states and 675 transitions. [2025-03-13 22:14:13,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 742 flow [2025-03-13 22:14:13,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 259 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:13,209 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 742 flow [2025-03-13 22:14:13,209 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} [2025-03-13 22:14:13,209 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2025-03-13 22:14:13,209 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 742 flow [2025-03-13 22:14:13,210 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) [2025-03-13 22:14:13,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:13,210 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] [2025-03-13 22:14:13,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-13 22:14:13,210 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)] === [2025-03-13 22:14:13,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:13,211 INFO L85 PathProgramCache]: Analyzing trace with hash -375678616, now seen corresponding path program 1 times [2025-03-13 22:14:13,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:13,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260586789] [2025-03-13 22:14:13,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:13,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:13,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-13 22:14:13,227 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-13 22:14:13,227 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:13,228 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:13,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:13,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:13,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260586789] [2025-03-13 22:14:13,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260586789] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:13,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:13,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:13,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357261475] [2025-03-13 22:14:13,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:13,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:13,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:13,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:13,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:13,832 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 235 [2025-03-13 22:14:13,833 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) [2025-03-13 22:14:13,833 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:13,833 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 235 [2025-03-13 22:14:13,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:14,287 INFO L124 PetriNetUnfolderBase]: 780/4989 cut-off events. [2025-03-13 22:14:14,288 INFO L125 PetriNetUnfolderBase]: For 952/1119 co-relation queries the response was YES. [2025-03-13 22:14:14,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8236 conditions, 4989 events. 780/4989 cut-off events. For 952/1119 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 43668 event pairs, 132 based on Foata normal form. 68/4724 useless extension candidates. Maximal degree in co-relation 8174. Up to 1061 conditions per place. [2025-03-13 22:14:14,310 INFO L140 encePairwiseOnDemand]: 211/235 looper letters, 81 selfloop transitions, 45 changer transitions 0/309 dead transitions. [2025-03-13 22:14:14,310 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 309 transitions, 1154 flow [2025-03-13 22:14:14,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:14,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:14,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2025-03-13 22:14:14,312 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8425531914893617 [2025-03-13 22:14:14,312 INFO L175 Difference]: Start difference. First operand has 229 places, 259 transitions, 742 flow. Second operand 6 states and 1188 transitions. [2025-03-13 22:14:14,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 309 transitions, 1154 flow [2025-03-13 22:14:14,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 309 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-13 22:14:14,318 INFO L231 Difference]: Finished difference. Result has 238 places, 303 transitions, 1132 flow [2025-03-13 22:14:14,319 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} [2025-03-13 22:14:14,319 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 16 predicate places. [2025-03-13 22:14:14,320 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 303 transitions, 1132 flow [2025-03-13 22:14:14,320 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) [2025-03-13 22:14:14,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:14,320 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] [2025-03-13 22:14:14,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-13 22:14:14,321 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)] === [2025-03-13 22:14:14,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash -120649481, now seen corresponding path program 1 times [2025-03-13 22:14:14,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:14,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506917854] [2025-03-13 22:14:14,321 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:14,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:14,330 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-13 22:14:14,335 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-13 22:14:14,336 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:14,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:14,592 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:14,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506917854] [2025-03-13 22:14:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506917854] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:14,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:14,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:14,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778242749] [2025-03-13 22:14:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:14,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:14,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:14,593 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:14,593 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:15,010 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 235 [2025-03-13 22:14:15,012 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) [2025-03-13 22:14:15,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:15,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 235 [2025-03-13 22:14:15,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:15,657 INFO L124 PetriNetUnfolderBase]: 1088/6751 cut-off events. [2025-03-13 22:14:15,657 INFO L125 PetriNetUnfolderBase]: For 5263/6169 co-relation queries the response was YES. [2025-03-13 22:14:15,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13076 conditions, 6751 events. 1088/6751 cut-off events. For 5263/6169 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 63332 event pairs, 142 based on Foata normal form. 185/6494 useless extension candidates. Maximal degree in co-relation 13010. Up to 1440 conditions per place. [2025-03-13 22:14:15,688 INFO L140 encePairwiseOnDemand]: 220/235 looper letters, 94 selfloop transitions, 78 changer transitions 0/380 dead transitions. [2025-03-13 22:14:15,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 380 transitions, 1934 flow [2025-03-13 22:14:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2025-03-13 22:14:15,691 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8794326241134752 [2025-03-13 22:14:15,691 INFO L175 Difference]: Start difference. First operand has 238 places, 303 transitions, 1132 flow. Second operand 6 states and 1240 transitions. [2025-03-13 22:14:15,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 380 transitions, 1934 flow [2025-03-13 22:14:15,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 380 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:15,706 INFO L231 Difference]: Finished difference. Result has 248 places, 380 transitions, 1950 flow [2025-03-13 22:14:15,706 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} [2025-03-13 22:14:15,708 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2025-03-13 22:14:15,708 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 380 transitions, 1950 flow [2025-03-13 22:14:15,708 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) [2025-03-13 22:14:15,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:15,709 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] [2025-03-13 22:14:15,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-13 22:14:15,709 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)] === [2025-03-13 22:14:15,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1833409638, now seen corresponding path program 1 times [2025-03-13 22:14:15,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:15,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667893912] [2025-03-13 22:14:15,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:15,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:15,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-13 22:14:15,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-13 22:14:15,731 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:15,731 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:15,944 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:15,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:15,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667893912] [2025-03-13 22:14:15,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667893912] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:15,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:15,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566124044] [2025-03-13 22:14:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:15,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:15,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:15,945 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:15,945 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:16,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 235 [2025-03-13 22:14:16,398 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) [2025-03-13 22:14:16,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:16,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 235 [2025-03-13 22:14:16,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:17,154 INFO L124 PetriNetUnfolderBase]: 1203/7402 cut-off events. [2025-03-13 22:14:17,154 INFO L125 PetriNetUnfolderBase]: For 5984/6524 co-relation queries the response was YES. [2025-03-13 22:14:17,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15220 conditions, 7402 events. 1203/7402 cut-off events. For 5984/6524 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 70763 event pairs, 87 based on Foata normal form. 186/7174 useless extension candidates. Maximal degree in co-relation 15149. Up to 1093 conditions per place. [2025-03-13 22:14:17,186 INFO L140 encePairwiseOnDemand]: 224/235 looper letters, 103 selfloop transitions, 66 changer transitions 0/445 dead transitions. [2025-03-13 22:14:17,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 445 transitions, 2720 flow [2025-03-13 22:14:17,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:17,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1258 transitions. [2025-03-13 22:14:17,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8921985815602836 [2025-03-13 22:14:17,189 INFO L175 Difference]: Start difference. First operand has 248 places, 380 transitions, 1950 flow. Second operand 6 states and 1258 transitions. [2025-03-13 22:14:17,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 445 transitions, 2720 flow [2025-03-13 22:14:17,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 445 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:17,203 INFO L231 Difference]: Finished difference. Result has 258 places, 442 transitions, 2712 flow [2025-03-13 22:14:17,204 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} [2025-03-13 22:14:17,204 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2025-03-13 22:14:17,204 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 442 transitions, 2712 flow [2025-03-13 22:14:17,205 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) [2025-03-13 22:14:17,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:17,205 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] [2025-03-13 22:14:17,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-13 22:14:17,206 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)] === [2025-03-13 22:14:17,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:17,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1503671530, now seen corresponding path program 1 times [2025-03-13 22:14:17,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:17,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088621511] [2025-03-13 22:14:17,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:17,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:17,218 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-13 22:14:17,229 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-13 22:14:17,231 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:17,231 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:17,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:17,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:17,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088621511] [2025-03-13 22:14:17,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088621511] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:17,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:17,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:17,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921466436] [2025-03-13 22:14:17,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:17,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:17,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:17,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:17,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:17,709 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-13 22:14:17,711 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) [2025-03-13 22:14:17,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:17,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-13 22:14:17,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:19,684 INFO L124 PetriNetUnfolderBase]: 5261/16665 cut-off events. [2025-03-13 22:14:19,684 INFO L125 PetriNetUnfolderBase]: For 19061/19361 co-relation queries the response was YES. [2025-03-13 22:14:19,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44613 conditions, 16665 events. 5261/16665 cut-off events. For 19061/19361 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 158437 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. [2025-03-13 22:14:19,774 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 260 selfloop transitions, 156 changer transitions 0/573 dead transitions. [2025-03-13 22:14:19,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 573 transitions, 4280 flow [2025-03-13 22:14:19,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:19,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:19,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-13 22:14:19,777 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-13 22:14:19,777 INFO L175 Difference]: Start difference. First operand has 258 places, 442 transitions, 2712 flow. Second operand 6 states and 1134 transitions. [2025-03-13 22:14:19,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 573 transitions, 4280 flow [2025-03-13 22:14:19,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 573 transitions, 4280 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:19,849 INFO L231 Difference]: Finished difference. Result has 268 places, 573 transitions, 4180 flow [2025-03-13 22:14:19,852 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} [2025-03-13 22:14:19,853 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 46 predicate places. [2025-03-13 22:14:19,853 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 573 transitions, 4180 flow [2025-03-13 22:14:19,853 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) [2025-03-13 22:14:19,855 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:19,855 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] [2025-03-13 22:14:19,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-13 22:14:19,855 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)] === [2025-03-13 22:14:19,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:19,856 INFO L85 PathProgramCache]: Analyzing trace with hash -661893215, now seen corresponding path program 1 times [2025-03-13 22:14:19,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:19,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359021231] [2025-03-13 22:14:19,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:19,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:19,877 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-13 22:14:19,887 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-13 22:14:19,888 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:19,888 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:20,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:20,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:20,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359021231] [2025-03-13 22:14:20,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359021231] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:20,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:20,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-13 22:14:20,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651205521] [2025-03-13 22:14:20,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:20,210 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-13 22:14:20,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:20,212 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-13 22:14:20,212 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-13 22:14:20,486 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-13 22:14:20,487 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) [2025-03-13 22:14:20,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:20,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-13 22:14:20,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:22,682 INFO L124 PetriNetUnfolderBase]: 5567/17507 cut-off events. [2025-03-13 22:14:22,682 INFO L125 PetriNetUnfolderBase]: For 29098/29352 co-relation queries the response was YES. [2025-03-13 22:14:22,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52930 conditions, 17507 events. 5567/17507 cut-off events. For 29098/29352 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 167720 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. [2025-03-13 22:14:22,763 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 372 selfloop transitions, 167 changer transitions 0/700 dead transitions. [2025-03-13 22:14:22,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 700 transitions, 5924 flow [2025-03-13 22:14:22,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-13 22:14:22,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-13 22:14:22,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-13 22:14:22,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-13 22:14:22,766 INFO L175 Difference]: Start difference. First operand has 268 places, 573 transitions, 4180 flow. Second operand 6 states and 1134 transitions. [2025-03-13 22:14:22,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 700 transitions, 5924 flow [2025-03-13 22:14:22,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 700 transitions, 5692 flow, removed 116 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:22,864 INFO L231 Difference]: Finished difference. Result has 278 places, 700 transitions, 5388 flow [2025-03-13 22:14:22,864 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} [2025-03-13 22:14:22,865 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 56 predicate places. [2025-03-13 22:14:22,866 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 700 transitions, 5388 flow [2025-03-13 22:14:22,867 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) [2025-03-13 22:14:22,867 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:22,867 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] [2025-03-13 22:14:22,867 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-13 22:14:22,867 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)] === [2025-03-13 22:14:22,868 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:22,868 INFO L85 PathProgramCache]: Analyzing trace with hash 858337806, now seen corresponding path program 1 times [2025-03-13 22:14:22,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:22,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024586870] [2025-03-13 22:14:22,868 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-13 22:14:22,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:22,885 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-13 22:14:22,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-13 22:14:22,895 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-13 22:14:22,895 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:25,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-13 22:14:25,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:25,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024586870] [2025-03-13 22:14:25,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024586870] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:25,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:25,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-13 22:14:25,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007754016] [2025-03-13 22:14:25,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:25,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-13 22:14:25,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:25,237 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-13 22:14:25,238 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-03-13 22:14:28,819 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 235 [2025-03-13 22:14:28,822 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) [2025-03-13 22:14:28,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:28,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 235 [2025-03-13 22:14:28,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:33,794 INFO L124 PetriNetUnfolderBase]: 6286/25441 cut-off events. [2025-03-13 22:14:33,794 INFO L125 PetriNetUnfolderBase]: For 52755/54255 co-relation queries the response was YES. [2025-03-13 22:14:33,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75290 conditions, 25441 events. 6286/25441 cut-off events. For 52755/54255 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 289034 event pairs, 825 based on Foata normal form. 329/24733 useless extension candidates. Maximal degree in co-relation 75196. Up to 7429 conditions per place. [2025-03-13 22:14:33,938 INFO L140 encePairwiseOnDemand]: 196/235 looper letters, 976 selfloop transitions, 193 changer transitions 0/1447 dead transitions. [2025-03-13 22:14:33,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1447 transitions, 13948 flow [2025-03-13 22:14:33,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-13 22:14:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-13 22:14:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5762 transitions. [2025-03-13 22:14:33,946 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7005471124620061 [2025-03-13 22:14:33,946 INFO L175 Difference]: Start difference. First operand has 278 places, 700 transitions, 5388 flow. Second operand 35 states and 5762 transitions. [2025-03-13 22:14:33,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1447 transitions, 13948 flow [2025-03-13 22:14:34,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1447 transitions, 13792 flow, removed 78 selfloop flow, removed 0 redundant places. [2025-03-13 22:14:34,129 INFO L231 Difference]: Finished difference. Result has 337 places, 901 transitions, 8389 flow [2025-03-13 22:14:34,130 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} [2025-03-13 22:14:34,130 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 115 predicate places. [2025-03-13 22:14:34,130 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 901 transitions, 8389 flow [2025-03-13 22:14:34,131 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) [2025-03-13 22:14:34,131 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:34,131 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] [2025-03-13 22:14:34,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-13 22:14:34,131 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)] === [2025-03-13 22:14:34,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:34,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1479586550, now seen corresponding path program 2 times [2025-03-13 22:14:34,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:34,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950853776] [2025-03-13 22:14:34,132 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-13 22:14:34,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:34,143 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-13 22:14:34,161 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 86 of 95 statements. [2025-03-13 22:14:34,162 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-13 22:14:34,162 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:36,249 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:36,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:36,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950853776] [2025-03-13 22:14:36,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950853776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:36,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:36,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-03-13 22:14:36,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035980597] [2025-03-13 22:14:36,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:36,249 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-13 22:14:36,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:36,250 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-13 22:14:36,250 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2025-03-13 22:14:39,054 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-13 22:14:39,056 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) [2025-03-13 22:14:39,056 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:14:39,056 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-13 22:14:39,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-13 22:14:55,440 INFO L124 PetriNetUnfolderBase]: 23454/86484 cut-off events. [2025-03-13 22:14:55,441 INFO L125 PetriNetUnfolderBase]: For 254872/262579 co-relation queries the response was YES. [2025-03-13 22:14:56,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287999 conditions, 86484 events. 23454/86484 cut-off events. For 254872/262579 co-relation queries the response was YES. Maximal size of possible extension queue 1262. Compared 1169615 event pairs, 4115 based on Foata normal form. 1154/84557 useless extension candidates. Maximal degree in co-relation 287878. Up to 12635 conditions per place. [2025-03-13 22:14:56,602 INFO L140 encePairwiseOnDemand]: 194/235 looper letters, 2082 selfloop transitions, 244 changer transitions 0/2618 dead transitions. [2025-03-13 22:14:56,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2618 transitions, 30225 flow [2025-03-13 22:14:56,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-13 22:14:56,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-13 22:14:56,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3144 transitions. [2025-03-13 22:14:56,605 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7869837296620776 [2025-03-13 22:14:56,606 INFO L175 Difference]: Start difference. First operand has 337 places, 901 transitions, 8389 flow. Second operand 17 states and 3144 transitions. [2025-03-13 22:14:56,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2618 transitions, 30225 flow [2025-03-13 22:14:58,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 2618 transitions, 30184 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-13 22:14:58,278 INFO L231 Difference]: Finished difference. Result has 360 places, 1138 transitions, 13118 flow [2025-03-13 22:14:58,279 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} [2025-03-13 22:14:58,279 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 138 predicate places. [2025-03-13 22:14:58,279 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1138 transitions, 13118 flow [2025-03-13 22:14:58,280 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) [2025-03-13 22:14:58,280 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-13 22:14:58,280 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] [2025-03-13 22:14:58,280 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-13 22:14:58,280 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)] === [2025-03-13 22:14:58,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-13 22:14:58,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1526421472, now seen corresponding path program 3 times [2025-03-13 22:14:58,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-13 22:14:58,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637822439] [2025-03-13 22:14:58,281 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-13 22:14:58,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-13 22:14:58,294 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 2 equivalence classes. [2025-03-13 22:14:58,299 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 86 of 95 statements. [2025-03-13 22:14:58,300 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-13 22:14:58,300 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-13 22:14:59,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-13 22:14:59,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-13 22:14:59,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637822439] [2025-03-13 22:14:59,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637822439] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-13 22:14:59,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-13 22:14:59,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-13 22:14:59,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435839740] [2025-03-13 22:14:59,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-13 22:14:59,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-13 22:14:59,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-13 22:14:59,221 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-13 22:14:59,222 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-03-13 22:15:01,418 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 235 [2025-03-13 22:15:01,420 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) [2025-03-13 22:15:01,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-13 22:15:01,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 235 [2025-03-13 22:15:01,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand