./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 e2fb8bed 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-?-e2fb8be-m [2025-03-08 21:55:51,918 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 21:55:51,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2025-03-08 21:55:51,973 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 21:55:51,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 21:55:51,991 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 21:55:51,992 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 21:55:51,992 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 21:55:51,993 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 21:55:51,993 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 21:55:51,993 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 21:55:51,993 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 21:55:51,993 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 21:55:51,994 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 21:55:51,995 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 21:55:51,996 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:55:51,996 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 21:55:51,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 21:55:51,997 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 21:55:51,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 21:55:51,997 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 [2025-03-08 21:55:52,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 21:55:52,209 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 21:55:52,212 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 21:55:52,213 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 21:55:52,214 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 21:55:52,215 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-08 21:55:53,407 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fe73446/261f5fc56732496cab158ab3eba8988a/FLAGfc2da513b [2025-03-08 21:55:53,685 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 21:55:53,685 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/ring_1w1r-1.i [2025-03-08 21:55:53,701 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fe73446/261f5fc56732496cab158ab3eba8988a/FLAGfc2da513b [2025-03-08 21:55:53,718 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fe73446/261f5fc56732496cab158ab3eba8988a [2025-03-08 21:55:53,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 21:55:53,722 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 21:55:53,723 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 21:55:53,723 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 21:55:53,727 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 21:55:53,728 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:55:53" (1/1) ... [2025-03-08 21:55:53,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22da2d19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:53, skipping insertion in model container [2025-03-08 21:55:53,729 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 09:55:53" (1/1) ... [2025-03-08 21:55:53,759 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 21:55:53,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:55:53,990 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 21:55:54,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 21:55:54,054 INFO L204 MainTranslator]: Completed translation [2025-03-08 21:55:54,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54 WrapperNode [2025-03-08 21:55:54,055 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 21:55:54,055 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 21:55:54,055 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 21:55:54,056 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 21:55:54,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,071 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,091 INFO L138 Inliner]: procedures = 224, calls = 44, calls flagged for inlining = 16, calls inlined = 10, statements flattened = 190 [2025-03-08 21:55:54,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 21:55:54,092 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 21:55:54,092 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 21:55:54,092 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 21:55:54,097 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,097 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,100 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,100 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,108 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,109 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,111 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,113 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 21:55:54,114 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 21:55:54,114 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 21:55:54,114 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 21:55:54,118 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (1/1) ... [2025-03-08 21:55:54,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 21:55:54,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 21:55:54,148 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) [2025-03-08 21:55:54,152 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 [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 21:55:54,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2025-03-08 21:55:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2025-03-08 21:55:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2025-03-08 21:55:54,168 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 21:55:54,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 21:55:54,168 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-08 21:55:54,264 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 21:55:54,265 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 21:55:54,446 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L820: havoc ring_empty_#t~mem15#1; [2025-03-08 21:55:54,446 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L820-1: havoc ring_empty_#t~mem14#1; [2025-03-08 21:55:54,605 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-08 21:55:54,605 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 21:55:54,616 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 21:55:54,616 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 21:55:54,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:55:54 BoogieIcfgContainer [2025-03-08 21:55:54,616 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 21:55:54,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 21:55:54,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 21:55:54,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 21:55:54,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 09:55:53" (1/3) ... [2025-03-08 21:55:54,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:55:54, skipping insertion in model container [2025-03-08 21:55:54,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 09:55:54" (2/3) ... [2025-03-08 21:55:54,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4838a1e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 09:55:54, skipping insertion in model container [2025-03-08 21:55:54,623 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 09:55:54" (3/3) ... [2025-03-08 21:55:54,624 INFO L128 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2025-03-08 21:55:54,636 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 21:55:54,638 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. [2025-03-08 21:55:54,639 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-08 21:55:54,723 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-08 21:55:54,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 235 transitions, 477 flow [2025-03-08 21:55:54,835 INFO L124 PetriNetUnfolderBase]: 10/234 cut-off events. [2025-03-08 21:55:54,837 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:55:54,845 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. [2025-03-08 21:55:54,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 229 places, 235 transitions, 477 flow [2025-03-08 21:55:54,869 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 228 transitions, 459 flow [2025-03-08 21:55:54,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 21:55:54,889 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;@492beab0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 21:55:54,891 INFO L334 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2025-03-08 21:55:54,899 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-08 21:55:54,899 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-03-08 21:55:54,899 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:55:54,900 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:54,901 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] [2025-03-08 21:55:54,902 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)] === [2025-03-08 21:55:54,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:54,906 INFO L85 PathProgramCache]: Analyzing trace with hash 901856057, now seen corresponding path program 1 times [2025-03-08 21:55:54,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:54,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213367825] [2025-03-08 21:55:54,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:54,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:54,974 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 27 statements into 1 equivalence classes. [2025-03-08 21:55:55,000 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 27 of 27 statements. [2025-03-08 21:55:55,000 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:55,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:55,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:55,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:55,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213367825] [2025-03-08 21:55:55,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213367825] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:55,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:55,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:55,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697418484] [2025-03-08 21:55:55,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:55,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:55,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:55,418 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:55,419 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:55,717 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-08 21:55:55,722 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) [2025-03-08 21:55:55,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:55,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-08 21:55:55,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:56,116 INFO L124 PetriNetUnfolderBase]: 675/3079 cut-off events. [2025-03-08 21:55:56,116 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:55:56,142 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. [2025-03-08 21:55:56,152 INFO L140 encePairwiseOnDemand]: 222/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/217 dead transitions. [2025-03-08 21:55:56,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 217 transitions, 555 flow [2025-03-08 21:55:56,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:56,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:56,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2025-03-08 21:55:56,168 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7581560283687944 [2025-03-08 21:55:56,171 INFO L175 Difference]: Start difference. First operand has 222 places, 228 transitions, 459 flow. Second operand 6 states and 1069 transitions. [2025-03-08 21:55:56,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 217 transitions, 555 flow [2025-03-08 21:55:56,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 217 transitions, 554 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 21:55:56,178 INFO L231 Difference]: Finished difference. Result has 222 places, 217 transitions, 446 flow [2025-03-08 21:55:56,180 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} [2025-03-08 21:55:56,182 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 0 predicate places. [2025-03-08 21:55:56,182 INFO L471 AbstractCegarLoop]: Abstraction has has 222 places, 217 transitions, 446 flow [2025-03-08 21:55:56,183 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) [2025-03-08 21:55:56,183 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:56,183 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] [2025-03-08 21:55:56,183 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 21:55:56,183 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)] === [2025-03-08 21:55:56,184 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:56,184 INFO L85 PathProgramCache]: Analyzing trace with hash -1141984178, now seen corresponding path program 1 times [2025-03-08 21:55:56,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:56,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625719499] [2025-03-08 21:55:56,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:56,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:56,193 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 34 statements into 1 equivalence classes. [2025-03-08 21:55:56,200 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 34 of 34 statements. [2025-03-08 21:55:56,200 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:56,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:56,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:56,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:56,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625719499] [2025-03-08 21:55:56,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625719499] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:56,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:56,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:56,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603744127] [2025-03-08 21:55:56,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:56,460 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:56,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:56,460 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:56,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:56,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 235 [2025-03-08 21:55:56,677 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) [2025-03-08 21:55:56,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:56,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 235 [2025-03-08 21:55:56,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:56,949 INFO L124 PetriNetUnfolderBase]: 675/3078 cut-off events. [2025-03-08 21:55:56,950 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-08 21:55:56,956 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. [2025-03-08 21:55:56,966 INFO L140 encePairwiseOnDemand]: 229/235 looper letters, 54 selfloop transitions, 5 changer transitions 0/216 dead transitions. [2025-03-08 21:55:56,966 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 216 transitions, 562 flow [2025-03-08 21:55:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:56,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:56,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1062 transitions. [2025-03-08 21:55:56,969 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7531914893617021 [2025-03-08 21:55:56,969 INFO L175 Difference]: Start difference. First operand has 222 places, 217 transitions, 446 flow. Second operand 6 states and 1062 transitions. [2025-03-08 21:55:56,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 216 transitions, 562 flow [2025-03-08 21:55:56,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 216 transitions, 552 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-08 21:55:56,976 INFO L231 Difference]: Finished difference. Result has 221 places, 216 transitions, 444 flow [2025-03-08 21:55:56,977 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} [2025-03-08 21:55:56,978 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, -1 predicate places. [2025-03-08 21:55:56,978 INFO L471 AbstractCegarLoop]: Abstraction has has 221 places, 216 transitions, 444 flow [2025-03-08 21:55:56,978 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) [2025-03-08 21:55:56,978 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:56,979 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] [2025-03-08 21:55:56,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 21:55:56,979 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)] === [2025-03-08 21:55:56,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:56,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1467489712, now seen corresponding path program 1 times [2025-03-08 21:55:56,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:56,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849135972] [2025-03-08 21:55:56,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:56,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:56,998 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-03-08 21:55:57,007 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-03-08 21:55:57,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:57,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:57,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:57,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:57,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849135972] [2025-03-08 21:55:57,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849135972] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:57,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:57,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:57,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413658833] [2025-03-08 21:55:57,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:57,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:57,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:57,260 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:57,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:57,685 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 235 [2025-03-08 21:55:57,686 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) [2025-03-08 21:55:57,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:57,687 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 235 [2025-03-08 21:55:57,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:57,967 INFO L124 PetriNetUnfolderBase]: 311/2118 cut-off events. [2025-03-08 21:55:57,967 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-08 21:55:57,971 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. [2025-03-08 21:55:57,976 INFO L140 encePairwiseOnDemand]: 214/235 looper letters, 39 selfloop transitions, 43 changer transitions 0/261 dead transitions. [2025-03-08 21:55:57,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 261 transitions, 698 flow [2025-03-08 21:55:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:57,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1224 transitions. [2025-03-08 21:55:57,981 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8680851063829788 [2025-03-08 21:55:57,982 INFO L175 Difference]: Start difference. First operand has 221 places, 216 transitions, 444 flow. Second operand 6 states and 1224 transitions. [2025-03-08 21:55:57,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 261 transitions, 698 flow [2025-03-08 21:55:57,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 261 transitions, 688 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-08 21:55:57,990 INFO L231 Difference]: Finished difference. Result has 226 places, 258 transitions, 730 flow [2025-03-08 21:55:57,990 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} [2025-03-08 21:55:57,991 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 4 predicate places. [2025-03-08 21:55:57,991 INFO L471 AbstractCegarLoop]: Abstraction has has 226 places, 258 transitions, 730 flow [2025-03-08 21:55:57,992 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) [2025-03-08 21:55:57,992 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:57,992 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] [2025-03-08 21:55:57,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 21:55:57,993 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)] === [2025-03-08 21:55:57,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1382232564, now seen corresponding path program 1 times [2025-03-08 21:55:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841832400] [2025-03-08 21:55:57,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:58,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 59 statements into 1 equivalence classes. [2025-03-08 21:55:58,015 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 59 of 59 statements. [2025-03-08 21:55:58,016 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:58,016 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:58,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 21:55:58,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:58,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841832400] [2025-03-08 21:55:58,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1841832400] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:58,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 21:55:58,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736162683] [2025-03-08 21:55:58,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:58,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 21:55:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:58,058 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 21:55:58,059 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 21:55:58,063 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 235 [2025-03-08 21:55:58,064 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) [2025-03-08 21:55:58,064 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:58,064 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 235 [2025-03-08 21:55:58,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:58,227 INFO L124 PetriNetUnfolderBase]: 297/2369 cut-off events. [2025-03-08 21:55:58,227 INFO L125 PetriNetUnfolderBase]: For 238/272 co-relation queries the response was YES. [2025-03-08 21:55:58,233 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. [2025-03-08 21:55:58,238 INFO L140 encePairwiseOnDemand]: 232/235 looper letters, 3 selfloop transitions, 2 changer transitions 0/259 dead transitions. [2025-03-08 21:55:58,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 259 transitions, 742 flow [2025-03-08 21:55:58,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 21:55:58,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-08 21:55:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 675 transitions. [2025-03-08 21:55:58,240 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.9574468085106383 [2025-03-08 21:55:58,240 INFO L175 Difference]: Start difference. First operand has 226 places, 258 transitions, 730 flow. Second operand 3 states and 675 transitions. [2025-03-08 21:55:58,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 259 transitions, 742 flow [2025-03-08 21:55:58,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 259 transitions, 742 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:55:58,248 INFO L231 Difference]: Finished difference. Result has 229 places, 259 transitions, 742 flow [2025-03-08 21:55:58,250 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} [2025-03-08 21:55:58,251 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 7 predicate places. [2025-03-08 21:55:58,251 INFO L471 AbstractCegarLoop]: Abstraction has has 229 places, 259 transitions, 742 flow [2025-03-08 21:55:58,251 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) [2025-03-08 21:55:58,252 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:58,252 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] [2025-03-08 21:55:58,252 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 21:55:58,252 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)] === [2025-03-08 21:55:58,253 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:58,254 INFO L85 PathProgramCache]: Analyzing trace with hash -375678616, now seen corresponding path program 1 times [2025-03-08 21:55:58,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:58,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712265226] [2025-03-08 21:55:58,254 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:58,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:58,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-03-08 21:55:58,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-03-08 21:55:58,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:58,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:58,457 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:55:58,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:58,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712265226] [2025-03-08 21:55:58,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712265226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:58,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:58,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:58,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559046294] [2025-03-08 21:55:58,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:58,459 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:58,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:58,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:58,460 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:55:58,854 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 235 [2025-03-08 21:55:58,855 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) [2025-03-08 21:55:58,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:55:58,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 235 [2025-03-08 21:55:58,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:55:59,350 INFO L124 PetriNetUnfolderBase]: 780/4989 cut-off events. [2025-03-08 21:55:59,351 INFO L125 PetriNetUnfolderBase]: For 952/1119 co-relation queries the response was YES. [2025-03-08 21:55:59,362 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. [2025-03-08 21:55:59,375 INFO L140 encePairwiseOnDemand]: 211/235 looper letters, 81 selfloop transitions, 45 changer transitions 0/309 dead transitions. [2025-03-08 21:55:59,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 309 transitions, 1154 flow [2025-03-08 21:55:59,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:55:59,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:55:59,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1188 transitions. [2025-03-08 21:55:59,378 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8425531914893617 [2025-03-08 21:55:59,378 INFO L175 Difference]: Start difference. First operand has 229 places, 259 transitions, 742 flow. Second operand 6 states and 1188 transitions. [2025-03-08 21:55:59,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 309 transitions, 1154 flow [2025-03-08 21:55:59,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 309 transitions, 1152 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-08 21:55:59,385 INFO L231 Difference]: Finished difference. Result has 238 places, 303 transitions, 1132 flow [2025-03-08 21:55:59,385 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} [2025-03-08 21:55:59,385 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 16 predicate places. [2025-03-08 21:55:59,386 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 303 transitions, 1132 flow [2025-03-08 21:55:59,386 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) [2025-03-08 21:55:59,386 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:55:59,387 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] [2025-03-08 21:55:59,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 21:55:59,387 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)] === [2025-03-08 21:55:59,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:55:59,387 INFO L85 PathProgramCache]: Analyzing trace with hash -120649481, now seen corresponding path program 1 times [2025-03-08 21:55:59,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:55:59,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316311652] [2025-03-08 21:55:59,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:55:59,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:55:59,398 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 64 statements into 1 equivalence classes. [2025-03-08 21:55:59,403 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 64 of 64 statements. [2025-03-08 21:55:59,404 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:55:59,404 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:55:59,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:55:59,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:55:59,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316311652] [2025-03-08 21:55:59,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316311652] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:55:59,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:55:59,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:55:59,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358542257] [2025-03-08 21:55:59,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:55:59,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:55:59,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:55:59,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:55:59,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:56:00,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 235 [2025-03-08 21:56:00,052 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) [2025-03-08 21:56:00,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:00,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 235 [2025-03-08 21:56:00,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:00,681 INFO L124 PetriNetUnfolderBase]: 1088/6751 cut-off events. [2025-03-08 21:56:00,681 INFO L125 PetriNetUnfolderBase]: For 5263/6169 co-relation queries the response was YES. [2025-03-08 21:56:00,699 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. [2025-03-08 21:56:00,716 INFO L140 encePairwiseOnDemand]: 220/235 looper letters, 94 selfloop transitions, 78 changer transitions 0/380 dead transitions. [2025-03-08 21:56:00,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 380 transitions, 1934 flow [2025-03-08 21:56:00,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:56:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:56:00,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1240 transitions. [2025-03-08 21:56:00,719 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8794326241134752 [2025-03-08 21:56:00,719 INFO L175 Difference]: Start difference. First operand has 238 places, 303 transitions, 1132 flow. Second operand 6 states and 1240 transitions. [2025-03-08 21:56:00,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 380 transitions, 1934 flow [2025-03-08 21:56:00,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 380 transitions, 1934 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:56:00,731 INFO L231 Difference]: Finished difference. Result has 248 places, 380 transitions, 1950 flow [2025-03-08 21:56:00,732 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} [2025-03-08 21:56:00,732 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 26 predicate places. [2025-03-08 21:56:00,732 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 380 transitions, 1950 flow [2025-03-08 21:56:00,733 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) [2025-03-08 21:56:00,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:00,733 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] [2025-03-08 21:56:00,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-08 21:56:00,733 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)] === [2025-03-08 21:56:00,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:00,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1833409638, now seen corresponding path program 1 times [2025-03-08 21:56:00,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:00,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640566902] [2025-03-08 21:56:00,734 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:56:00,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:00,743 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 67 statements into 1 equivalence classes. [2025-03-08 21:56:00,748 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 67 of 67 statements. [2025-03-08 21:56:00,750 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:56:00,750 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:01,016 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:56:01,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:01,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640566902] [2025-03-08 21:56:01,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640566902] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:01,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:01,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:56:01,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040041950] [2025-03-08 21:56:01,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:01,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:56:01,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:01,018 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:56:01,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:56:01,550 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 235 [2025-03-08 21:56:01,552 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) [2025-03-08 21:56:01,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:01,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 235 [2025-03-08 21:56:01,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:02,158 INFO L124 PetriNetUnfolderBase]: 1203/7402 cut-off events. [2025-03-08 21:56:02,158 INFO L125 PetriNetUnfolderBase]: For 5984/6524 co-relation queries the response was YES. [2025-03-08 21:56:02,177 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. [2025-03-08 21:56:02,193 INFO L140 encePairwiseOnDemand]: 224/235 looper letters, 103 selfloop transitions, 66 changer transitions 0/445 dead transitions. [2025-03-08 21:56:02,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 445 transitions, 2720 flow [2025-03-08 21:56:02,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:56:02,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:56:02,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1258 transitions. [2025-03-08 21:56:02,195 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8921985815602836 [2025-03-08 21:56:02,196 INFO L175 Difference]: Start difference. First operand has 248 places, 380 transitions, 1950 flow. Second operand 6 states and 1258 transitions. [2025-03-08 21:56:02,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 445 transitions, 2720 flow [2025-03-08 21:56:02,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 445 transitions, 2720 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:56:02,211 INFO L231 Difference]: Finished difference. Result has 258 places, 442 transitions, 2712 flow [2025-03-08 21:56:02,212 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} [2025-03-08 21:56:02,212 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 36 predicate places. [2025-03-08 21:56:02,212 INFO L471 AbstractCegarLoop]: Abstraction has has 258 places, 442 transitions, 2712 flow [2025-03-08 21:56:02,213 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) [2025-03-08 21:56:02,213 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:02,213 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 21:56:02,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-08 21:56:02,213 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)] === [2025-03-08 21:56:02,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:02,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1503671530, now seen corresponding path program 1 times [2025-03-08 21:56:02,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:02,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191913930] [2025-03-08 21:56:02,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:56:02,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:02,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 80 statements into 1 equivalence classes. [2025-03-08 21:56:02,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 80 of 80 statements. [2025-03-08 21:56:02,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:56:02,240 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:56:02,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:02,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191913930] [2025-03-08 21:56:02,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191913930] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:02,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:02,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:56:02,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397505656] [2025-03-08 21:56:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:02,482 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:56:02,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:02,483 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:56:02,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:56:02,708 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-08 21:56:02,709 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) [2025-03-08 21:56:02,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:02,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-08 21:56:02,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:04,488 INFO L124 PetriNetUnfolderBase]: 5261/16665 cut-off events. [2025-03-08 21:56:04,489 INFO L125 PetriNetUnfolderBase]: For 19061/19361 co-relation queries the response was YES. [2025-03-08 21:56:04,523 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. [2025-03-08 21:56:04,569 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 260 selfloop transitions, 156 changer transitions 0/573 dead transitions. [2025-03-08 21:56:04,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 573 transitions, 4280 flow [2025-03-08 21:56:04,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:56:04,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:56:04,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-08 21:56:04,575 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-08 21:56:04,576 INFO L175 Difference]: Start difference. First operand has 258 places, 442 transitions, 2712 flow. Second operand 6 states and 1134 transitions. [2025-03-08 21:56:04,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 573 transitions, 4280 flow [2025-03-08 21:56:04,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 573 transitions, 4280 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-08 21:56:04,636 INFO L231 Difference]: Finished difference. Result has 268 places, 573 transitions, 4180 flow [2025-03-08 21:56:04,636 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} [2025-03-08 21:56:04,637 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 46 predicate places. [2025-03-08 21:56:04,637 INFO L471 AbstractCegarLoop]: Abstraction has has 268 places, 573 transitions, 4180 flow [2025-03-08 21:56:04,637 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) [2025-03-08 21:56:04,637 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:04,638 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] [2025-03-08 21:56:04,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-08 21:56:04,638 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)] === [2025-03-08 21:56:04,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:04,638 INFO L85 PathProgramCache]: Analyzing trace with hash -661893215, now seen corresponding path program 1 times [2025-03-08 21:56:04,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:04,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652448782] [2025-03-08 21:56:04,638 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:56:04,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:04,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 83 statements into 1 equivalence classes. [2025-03-08 21:56:04,658 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 83 of 83 statements. [2025-03-08 21:56:04,658 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:56:04,658 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:04,982 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:56:04,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:04,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652448782] [2025-03-08 21:56:04,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652448782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:04,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:04,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 21:56:04,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298936270] [2025-03-08 21:56:04,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:04,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 21:56:04,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:04,984 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 21:56:04,984 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-03-08 21:56:05,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-08 21:56:05,238 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) [2025-03-08 21:56:05,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:05,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-08 21:56:05,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:07,741 INFO L124 PetriNetUnfolderBase]: 5567/17507 cut-off events. [2025-03-08 21:56:07,741 INFO L125 PetriNetUnfolderBase]: For 29098/29352 co-relation queries the response was YES. [2025-03-08 21:56:07,812 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. [2025-03-08 21:56:07,876 INFO L140 encePairwiseOnDemand]: 204/235 looper letters, 372 selfloop transitions, 167 changer transitions 0/700 dead transitions. [2025-03-08 21:56:07,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 700 transitions, 5924 flow [2025-03-08 21:56:07,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 21:56:07,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-08 21:56:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1134 transitions. [2025-03-08 21:56:07,879 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.8042553191489362 [2025-03-08 21:56:07,879 INFO L175 Difference]: Start difference. First operand has 268 places, 573 transitions, 4180 flow. Second operand 6 states and 1134 transitions. [2025-03-08 21:56:07,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 700 transitions, 5924 flow [2025-03-08 21:56:07,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 700 transitions, 5692 flow, removed 116 selfloop flow, removed 0 redundant places. [2025-03-08 21:56:08,006 INFO L231 Difference]: Finished difference. Result has 278 places, 700 transitions, 5388 flow [2025-03-08 21:56:08,008 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} [2025-03-08 21:56:08,009 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 56 predicate places. [2025-03-08 21:56:08,009 INFO L471 AbstractCegarLoop]: Abstraction has has 278 places, 700 transitions, 5388 flow [2025-03-08 21:56:08,010 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) [2025-03-08 21:56:08,010 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:08,010 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] [2025-03-08 21:56:08,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-08 21:56:08,010 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)] === [2025-03-08 21:56:08,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:08,011 INFO L85 PathProgramCache]: Analyzing trace with hash 858337806, now seen corresponding path program 1 times [2025-03-08 21:56:08,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:08,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663031318] [2025-03-08 21:56:08,011 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 21:56:08,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:08,028 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 95 statements into 1 equivalence classes. [2025-03-08 21:56:08,036 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 95 of 95 statements. [2025-03-08 21:56:08,036 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 21:56:08,036 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:10,023 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-08 21:56:10,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:10,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663031318] [2025-03-08 21:56:10,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663031318] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:10,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:10,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2025-03-08 21:56:10,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146077702] [2025-03-08 21:56:10,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:10,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 21:56:10,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:10,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 21:56:10,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-03-08 21:56:13,668 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 235 [2025-03-08 21:56:13,671 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) [2025-03-08 21:56:13,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:13,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 235 [2025-03-08 21:56:13,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:18,701 INFO L124 PetriNetUnfolderBase]: 6286/25441 cut-off events. [2025-03-08 21:56:18,701 INFO L125 PetriNetUnfolderBase]: For 52755/54255 co-relation queries the response was YES. [2025-03-08 21:56:18,807 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. [2025-03-08 21:56:18,877 INFO L140 encePairwiseOnDemand]: 196/235 looper letters, 976 selfloop transitions, 193 changer transitions 0/1447 dead transitions. [2025-03-08 21:56:18,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 1447 transitions, 13948 flow [2025-03-08 21:56:18,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2025-03-08 21:56:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2025-03-08 21:56:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5762 transitions. [2025-03-08 21:56:18,887 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7005471124620061 [2025-03-08 21:56:18,887 INFO L175 Difference]: Start difference. First operand has 278 places, 700 transitions, 5388 flow. Second operand 35 states and 5762 transitions. [2025-03-08 21:56:18,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 1447 transitions, 13948 flow [2025-03-08 21:56:19,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 1447 transitions, 13792 flow, removed 78 selfloop flow, removed 0 redundant places. [2025-03-08 21:56:19,122 INFO L231 Difference]: Finished difference. Result has 337 places, 901 transitions, 8389 flow [2025-03-08 21:56:19,123 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} [2025-03-08 21:56:19,124 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 115 predicate places. [2025-03-08 21:56:19,124 INFO L471 AbstractCegarLoop]: Abstraction has has 337 places, 901 transitions, 8389 flow [2025-03-08 21:56:19,125 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) [2025-03-08 21:56:19,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:19,125 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] [2025-03-08 21:56:19,125 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-08 21:56:19,125 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)] === [2025-03-08 21:56:19,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:19,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1479586550, now seen corresponding path program 2 times [2025-03-08 21:56:19,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:19,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605589798] [2025-03-08 21:56:19,126 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 21:56:19,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:19,140 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 95 statements into 2 equivalence classes. [2025-03-08 21:56:19,154 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 86 of 95 statements. [2025-03-08 21:56:19,155 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-08 21:56:19,155 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:21,514 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:56:21,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:21,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605589798] [2025-03-08 21:56:21,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605589798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:21,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:21,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2025-03-08 21:56:21,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358156721] [2025-03-08 21:56:21,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:21,516 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2025-03-08 21:56:21,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:21,516 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2025-03-08 21:56:21,517 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2025-03-08 21:56:24,319 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 235 [2025-03-08 21:56:24,321 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) [2025-03-08 21:56:24,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:24,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 235 [2025-03-08 21:56:24,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-08 21:56:40,264 INFO L124 PetriNetUnfolderBase]: 23454/86484 cut-off events. [2025-03-08 21:56:40,264 INFO L125 PetriNetUnfolderBase]: For 254872/262579 co-relation queries the response was YES. [2025-03-08 21:56:41,067 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. [2025-03-08 21:56:41,476 INFO L140 encePairwiseOnDemand]: 194/235 looper letters, 2082 selfloop transitions, 244 changer transitions 0/2618 dead transitions. [2025-03-08 21:56:41,476 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 2618 transitions, 30225 flow [2025-03-08 21:56:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 21:56:41,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2025-03-08 21:56:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3144 transitions. [2025-03-08 21:56:41,485 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7869837296620776 [2025-03-08 21:56:41,485 INFO L175 Difference]: Start difference. First operand has 337 places, 901 transitions, 8389 flow. Second operand 17 states and 3144 transitions. [2025-03-08 21:56:41,485 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 2618 transitions, 30225 flow [2025-03-08 21:56:43,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 2618 transitions, 30184 flow, removed 15 selfloop flow, removed 6 redundant places. [2025-03-08 21:56:43,122 INFO L231 Difference]: Finished difference. Result has 360 places, 1138 transitions, 13118 flow [2025-03-08 21:56:43,123 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} [2025-03-08 21:56:43,123 INFO L279 CegarLoopForPetriNet]: 222 programPoint places, 138 predicate places. [2025-03-08 21:56:43,123 INFO L471 AbstractCegarLoop]: Abstraction has has 360 places, 1138 transitions, 13118 flow [2025-03-08 21:56:43,124 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) [2025-03-08 21:56:43,124 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-08 21:56:43,124 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] [2025-03-08 21:56:43,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-08 21:56:43,124 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)] === [2025-03-08 21:56:43,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 21:56:43,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1526421472, now seen corresponding path program 3 times [2025-03-08 21:56:43,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 21:56:43,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849364604] [2025-03-08 21:56:43,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 21:56:43,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 21:56:43,136 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 95 statements into 2 equivalence classes. [2025-03-08 21:56:43,141 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 86 of 95 statements. [2025-03-08 21:56:43,141 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-08 21:56:43,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 21:56:44,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2025-03-08 21:56:44,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 21:56:44,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849364604] [2025-03-08 21:56:44,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849364604] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 21:56:44,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 21:56:44,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2025-03-08 21:56:44,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790371535] [2025-03-08 21:56:44,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 21:56:44,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-08 21:56:44,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 21:56:44,075 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-08 21:56:44,076 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2025-03-08 21:56:46,049 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 235 [2025-03-08 21:56:46,051 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) [2025-03-08 21:56:46,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-08 21:56:46,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 235 [2025-03-08 21:56:46,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand