/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg true --cacsl2boogietranslator.check.absence.of.data.races.in.concurrent.programs true --cacsl2boogietranslator.check.unreachability.of.reach_error.function false -i ../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-30 00:40:04,227 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-30 00:40:04,288 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-30 00:40:04,313 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-30 00:40:04,313 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-30 00:40:04,314 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-30 00:40:04,314 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-30 00:40:04,314 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-30 00:40:04,314 INFO L153 SettingsManager]: * Use SBE=true [2023-11-30 00:40:04,317 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-30 00:40:04,317 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-30 00:40:04,317 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-30 00:40:04,318 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-30 00:40:04,319 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-30 00:40:04,320 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-30 00:40:04,320 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-30 00:40:04,320 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-30 00:40:04,320 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-30 00:40:04,321 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-30 00:40:04,321 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-30 00:40:04,321 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:40:04,322 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-30 00:40:04,322 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-30 00:40:04,322 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-30 00:40:04,322 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-30 00:40:04,323 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-30 00:40:04,323 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-30 00:40:04,323 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-30 00:40:04,323 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of data races in concurrent programs -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2023-11-30 00:40:04,517 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-30 00:40:04,534 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-30 00:40:04,536 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-30 00:40:04,536 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-30 00:40:04,537 INFO L274 PluginConnector]: CDTParser initialized [2023-11-30 00:40:04,537 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 00:40:05,489 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-30 00:40:05,664 INFO L384 CDTParser]: Found 1 translation units. [2023-11-30 00:40:05,664 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 00:40:05,675 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f782c1b4/a4f628445e6d40ac96491f62ee785854/FLAG23bde2507 [2023-11-30 00:40:05,691 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f782c1b4/a4f628445e6d40ac96491f62ee785854 [2023-11-30 00:40:05,693 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-30 00:40:05,694 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-30 00:40:05,696 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-30 00:40:05,696 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-30 00:40:05,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-30 00:40:05,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:05" (1/1) ... [2023-11-30 00:40:05,701 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23a204a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:05, skipping insertion in model container [2023-11-30 00:40:05,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:40:05" (1/1) ... [2023-11-30 00:40:05,749 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-30 00:40:05,944 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:40:05,954 INFO L202 MainTranslator]: Completed pre-run [2023-11-30 00:40:05,986 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-30 00:40:06,014 INFO L206 MainTranslator]: Completed translation [2023-11-30 00:40:06,014 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06 WrapperNode [2023-11-30 00:40:06,015 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-30 00:40:06,016 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-30 00:40:06,016 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-30 00:40:06,016 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-30 00:40:06,021 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,038 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,059 INFO L138 Inliner]: procedures = 174, calls = 76, calls flagged for inlining = 24, calls inlined = 24, statements flattened = 371 [2023-11-30 00:40:06,059 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-30 00:40:06,060 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-30 00:40:06,060 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-30 00:40:06,060 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-30 00:40:06,065 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,066 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,073 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,074 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,078 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,081 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,085 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,086 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,089 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-30 00:40:06,090 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-30 00:40:06,090 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-30 00:40:06,090 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-30 00:40:06,090 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (1/1) ... [2023-11-30 00:40:06,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-30 00:40:06,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-30 00:40:06,118 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-30 00:40:06,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-30 00:40:06,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-30 00:40:06,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-30 00:40:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-30 00:40:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-30 00:40:06,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-30 00:40:06,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-30 00:40:06,146 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-30 00:40:06,259 INFO L241 CfgBuilder]: Building ICFG [2023-11-30 00:40:06,261 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-30 00:40:06,612 INFO L282 CfgBuilder]: Performing block encoding [2023-11-30 00:40:06,643 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-30 00:40:06,643 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-30 00:40:06,644 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:06 BoogieIcfgContainer [2023-11-30 00:40:06,644 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-30 00:40:06,645 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-30 00:40:06,645 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-30 00:40:06,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-30 00:40:06,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:40:05" (1/3) ... [2023-11-30 00:40:06,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471711da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:06, skipping insertion in model container [2023-11-30 00:40:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:40:06" (2/3) ... [2023-11-30 00:40:06,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@471711da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:40:06, skipping insertion in model container [2023-11-30 00:40:06,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:40:06" (3/3) ... [2023-11-30 00:40:06,649 INFO L112 eAbstractionObserver]: Analyzing ICFG 43_NetBSD_sysmon_power_sliced-pthread.i [2023-11-30 00:40:06,662 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-30 00:40:06,663 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-30 00:40:06,663 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-30 00:40:06,721 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:06,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 331 places, 382 transitions, 768 flow [2023-11-30 00:40:06,822 INFO L124 PetriNetUnfolderBase]: 55/393 cut-off events. [2023-11-30 00:40:06,822 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:40:06,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 393 events. 55/393 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1572 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 351. Up to 10 conditions per place. [2023-11-30 00:40:06,829 INFO L82 GeneralOperation]: Start removeDead. Operand has 331 places, 382 transitions, 768 flow [2023-11-30 00:40:06,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 331 places, 382 transitions, 768 flow [2023-11-30 00:40:06,841 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:06,845 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:06,845 INFO L363 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-30 00:40:06,853 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:06,854 INFO L124 PetriNetUnfolderBase]: 3/64 cut-off events. [2023-11-30 00:40:06,854 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-30 00:40:06,854 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:06,854 INFO L232 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:40:06,855 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-30 00:40:06,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1932062913, now seen corresponding path program 1 times [2023-11-30 00:40:06,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:06,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362969381] [2023-11-30 00:40:06,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:06,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:06,972 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:40:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:07,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:40:07,022 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:40:07,024 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-30 00:40:07,025 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 7 remaining) [2023-11-30 00:40:07,025 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 7 remaining) [2023-11-30 00:40:07,025 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 7 remaining) [2023-11-30 00:40:07,026 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 7 remaining) [2023-11-30 00:40:07,026 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 7 remaining) [2023-11-30 00:40:07,026 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 7 remaining) [2023-11-30 00:40:07,027 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-30 00:40:07,027 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:40:07,031 WARN L227 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:40:07,031 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-30 00:40:07,111 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:07,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 619 places, 721 transitions, 1452 flow [2023-11-30 00:40:07,326 INFO L124 PetriNetUnfolderBase]: 109/745 cut-off events. [2023-11-30 00:40:07,326 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 00:40:07,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 745 events. 109/745 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4163 event pairs, 0 based on Foata normal form. 0/627 useless extension candidates. Maximal degree in co-relation 689. Up to 10 conditions per place. [2023-11-30 00:40:07,343 INFO L82 GeneralOperation]: Start removeDead. Operand has 619 places, 721 transitions, 1452 flow [2023-11-30 00:40:07,354 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 619 places, 721 transitions, 1452 flow [2023-11-30 00:40:07,355 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:07,356 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:07,357 INFO L363 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-11-30 00:40:07,365 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:07,365 INFO L124 PetriNetUnfolderBase]: 5/124 cut-off events. [2023-11-30 00:40:07,365 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-30 00:40:07,365 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:07,366 INFO L232 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:40:07,366 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-11-30 00:40:07,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:07,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1405301526, now seen corresponding path program 1 times [2023-11-30 00:40:07,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:07,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130582103] [2023-11-30 00:40:07,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:07,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:07,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:07,412 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:40:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:07,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:40:07,447 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:40:07,447 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2023-11-30 00:40:07,447 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 10 remaining) [2023-11-30 00:40:07,447 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 10 remaining) [2023-11-30 00:40:07,447 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 10 remaining) [2023-11-30 00:40:07,447 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 10 remaining) [2023-11-30 00:40:07,448 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 10 remaining) [2023-11-30 00:40:07,448 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 10 remaining) [2023-11-30 00:40:07,448 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 10 remaining) [2023-11-30 00:40:07,448 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 10 remaining) [2023-11-30 00:40:07,448 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 10 remaining) [2023-11-30 00:40:07,448 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-30 00:40:07,448 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:40:07,449 WARN L227 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:40:07,449 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-30 00:40:07,519 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:07,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 907 places, 1060 transitions, 2138 flow [2023-11-30 00:40:07,840 INFO L124 PetriNetUnfolderBase]: 163/1097 cut-off events. [2023-11-30 00:40:07,840 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:40:07,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 1097 events. 163/1097 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 6979 event pairs, 0 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 1027. Up to 10 conditions per place. [2023-11-30 00:40:07,868 INFO L82 GeneralOperation]: Start removeDead. Operand has 907 places, 1060 transitions, 2138 flow [2023-11-30 00:40:07,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 907 places, 1060 transitions, 2138 flow [2023-11-30 00:40:07,889 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:07,890 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:07,891 INFO L363 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-30 00:40:07,915 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:07,915 INFO L124 PetriNetUnfolderBase]: 22/284 cut-off events. [2023-11-30 00:40:07,915 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-30 00:40:07,916 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:07,916 INFO L232 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:40:07,916 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 9 more)] === [2023-11-30 00:40:07,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:07,917 INFO L85 PathProgramCache]: Analyzing trace with hash 728255317, now seen corresponding path program 1 times [2023-11-30 00:40:07,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:07,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200867598] [2023-11-30 00:40:07,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:07,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:07,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:40:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:07,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:40:07,981 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-30 00:40:07,981 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-30 00:40:07,982 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-30 00:40:07,982 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-30 00:40:07,982 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:40:07,983 WARN L227 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:40:07,983 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-30 00:40:08,063 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:08,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1195 places, 1399 transitions, 2826 flow [2023-11-30 00:40:08,737 INFO L124 PetriNetUnfolderBase]: 217/1449 cut-off events. [2023-11-30 00:40:08,738 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 00:40:08,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1449 events. 217/1449 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9991 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1365. Up to 10 conditions per place. [2023-11-30 00:40:08,809 INFO L82 GeneralOperation]: Start removeDead. Operand has 1195 places, 1399 transitions, 2826 flow [2023-11-30 00:40:08,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1195 places, 1399 transitions, 2826 flow [2023-11-30 00:40:08,848 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:08,848 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:08,849 INFO L363 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-11-30 00:40:08,916 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:08,917 INFO L124 PetriNetUnfolderBase]: 58/544 cut-off events. [2023-11-30 00:40:08,919 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-30 00:40:08,919 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:08,920 INFO L232 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:40:08,920 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2023-11-30 00:40:08,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:08,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1697644583, now seen corresponding path program 1 times [2023-11-30 00:40:08,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:08,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452231594] [2023-11-30 00:40:08,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:08,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:08,962 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:40:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:08,991 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:40:08,991 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:40:08,991 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-11-30 00:40:08,992 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-11-30 00:40:08,994 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-11-30 00:40:08,995 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-11-30 00:40:08,995 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-30 00:40:08,995 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:40:08,996 WARN L227 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:40:08,996 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-11-30 00:40:09,092 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:09,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1483 places, 1738 transitions, 3516 flow [2023-11-30 00:40:10,118 INFO L124 PetriNetUnfolderBase]: 271/1801 cut-off events. [2023-11-30 00:40:10,118 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-30 00:40:10,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 1801 events. 271/1801 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 13028 event pairs, 0 based on Foata normal form. 0/1509 useless extension candidates. Maximal degree in co-relation 1703. Up to 12 conditions per place. [2023-11-30 00:40:10,180 INFO L82 GeneralOperation]: Start removeDead. Operand has 1483 places, 1738 transitions, 3516 flow [2023-11-30 00:40:10,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1483 places, 1738 transitions, 3516 flow [2023-11-30 00:40:10,214 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:10,215 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:10,215 INFO L363 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-30 00:40:10,428 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:10,428 INFO L124 PetriNetUnfolderBase]: 104/857 cut-off events. [2023-11-30 00:40:10,428 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-11-30 00:40:10,428 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:10,428 INFO L232 CegarLoopForPetriNet]: trace histogram [6, 6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-30 00:40:10,428 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 15 more)] === [2023-11-30 00:40:10,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:10,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1916070283, now seen corresponding path program 1 times [2023-11-30 00:40:10,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:10,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899753098] [2023-11-30 00:40:10,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:10,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:10,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:10,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-30 00:40:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-30 00:40:10,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-30 00:40:10,486 INFO L372 BasicCegarLoop]: Counterexample is feasible [2023-11-30 00:40:10,486 INFO L810 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-30 00:40:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (17 of 19 remaining) [2023-11-30 00:40:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (16 of 19 remaining) [2023-11-30 00:40:10,486 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (15 of 19 remaining) [2023-11-30 00:40:10,487 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (14 of 19 remaining) [2023-11-30 00:40:10,489 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (13 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (12 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (10 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (9 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (8 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (7 of 19 remaining) [2023-11-30 00:40:10,490 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (3 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (2 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (1 of 19 remaining) [2023-11-30 00:40:10,491 INFO L810 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (0 of 19 remaining) [2023-11-30 00:40:10,491 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-30 00:40:10,491 INFO L457 BasicCegarLoop]: Path program histogram: [1] [2023-11-30 00:40:10,492 WARN L227 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-30 00:40:10,492 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-11-30 00:40:10,643 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-30 00:40:10,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1771 places, 2077 transitions, 4208 flow [2023-11-30 00:40:12,212 INFO L124 PetriNetUnfolderBase]: 325/2153 cut-off events. [2023-11-30 00:40:12,213 INFO L125 PetriNetUnfolderBase]: For 50/50 co-relation queries the response was YES. [2023-11-30 00:40:12,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 2153 events. 325/2153 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 16039 event pairs, 0 based on Foata normal form. 0/1803 useless extension candidates. Maximal degree in co-relation 2041. Up to 14 conditions per place. [2023-11-30 00:40:12,321 INFO L82 GeneralOperation]: Start removeDead. Operand has 1771 places, 2077 transitions, 4208 flow [2023-11-30 00:40:12,386 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1771 places, 2077 transitions, 4208 flow [2023-11-30 00:40:12,387 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-30 00:40:12,387 INFO L362 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, mHoare=true, 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;@72137347, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-30 00:40:12,387 INFO L363 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-30 00:40:12,733 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-30 00:40:12,733 INFO L124 PetriNetUnfolderBase]: 130/1043 cut-off events. [2023-11-30 00:40:12,733 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-11-30 00:40:12,733 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-30 00:40:12,733 INFO L232 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] [2023-11-30 00:40:12,733 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 18 more)] === [2023-11-30 00:40:12,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-30 00:40:12,734 INFO L85 PathProgramCache]: Analyzing trace with hash 70425869, now seen corresponding path program 1 times [2023-11-30 00:40:12,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-30 00:40:12,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274596904] [2023-11-30 00:40:12,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-30 00:40:12,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-30 00:40:12,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-30 00:40:12,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-30 00:40:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-30 00:40:12,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274596904] [2023-11-30 00:40:12,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274596904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-30 00:40:12,801 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-30 00:40:12,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-30 00:40:12,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752261170] [2023-11-30 00:40:12,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-30 00:40:12,806 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-30 00:40:12,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-30 00:40:12,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-30 00:40:12,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-30 00:40:12,833 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 1559 out of 2077 [2023-11-30 00:40:12,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1771 places, 2077 transitions, 4208 flow. Second operand has 3 states, 3 states have (on average 1560.3333333333333) internal successors, (4681), 3 states have internal predecessors, (4681), 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) [2023-11-30 00:40:12,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-30 00:40:12,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1559 of 2077 [2023-11-30 00:40:12,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand