/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 -i ../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-175f719-m [2023-11-29 23:45:30,311 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 23:45:30,355 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 [2023-11-29 23:45:30,379 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 23:45:30,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 23:45:30,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 23:45:30,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 23:45:30,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 23:45:30,380 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 23:45:30,380 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 23:45:30,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 23:45:30,381 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 23:45:30,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 23:45:30,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 23:45:30,381 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 23:45:30,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 23:45:30,382 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 23:45:30,382 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 23:45:30,382 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 23:45:30,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 23:45:30,383 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 23:45:30,387 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 23:45:30,387 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 23:45:30,388 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-29 23:45:30,388 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 23:45:30,388 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:45:30,388 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 23:45:30,389 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 23:45:30,389 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 23:45:30,389 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 23:45:30,389 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 23:45:30,389 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 23:45:30,390 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 23:45:30,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-11-29 23:45:30,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 23:45:30,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 23:45:30,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 23:45:30,569 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 23:45:30,570 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 23:45:30,570 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-11-29 23:45:31,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 23:45:31,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 23:45:31,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c [2023-11-29 23:45:31,760 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab6e07e0/561f7eea40354072a45b3c900ff255dd/FLAG81eae59cb [2023-11-29 23:45:31,769 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cab6e07e0/561f7eea40354072a45b3c900ff255dd [2023-11-29 23:45:31,771 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 23:45:31,772 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-29 23:45:31,772 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 23:45:31,772 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 23:45:31,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 23:45:31,779 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593ea118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31, skipping insertion in model container [2023-11-29 23:45:31,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,799 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 23:45:31,919 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2834,2847] [2023-11-29 23:45:31,924 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:45:31,929 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 23:45:31,943 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/unroll-cond-4.wvr.c[2834,2847] [2023-11-29 23:45:31,945 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 23:45:31,954 INFO L206 MainTranslator]: Completed translation [2023-11-29 23:45:31,954 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31 WrapperNode [2023-11-29 23:45:31,954 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 23:45:31,955 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 23:45:31,955 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 23:45:31,955 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 23:45:31,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,965 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,981 INFO L138 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 188 [2023-11-29 23:45:31,981 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 23:45:31,982 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 23:45:31,982 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 23:45:31,982 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 23:45:31,987 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,987 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:31,999 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:32,000 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 23:45:32,001 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 23:45:32,001 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 23:45:32,001 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 23:45:32,001 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (1/1) ... [2023-11-29 23:45:32,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-29 23:45:32,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:45:32,025 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) [2023-11-29 23:45:32,061 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 [2023-11-29 23:45:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 23:45:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-29 23:45:32,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-29 23:45:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-29 23:45:32,066 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-29 23:45:32,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 23:45:32,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-29 23:45:32,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 23:45:32,068 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 23:45:32,157 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 23:45:32,159 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 23:45:32,413 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 23:45:32,423 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 23:45:32,423 INFO L309 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-29 23:45:32,424 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:45:32 BoogieIcfgContainer [2023-11-29 23:45:32,424 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 23:45:32,425 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 23:45:32,425 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 23:45:32,427 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 23:45:32,427 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:45:31" (1/3) ... [2023-11-29 23:45:32,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61103787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:45:32, skipping insertion in model container [2023-11-29 23:45:32,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:45:31" (2/3) ... [2023-11-29 23:45:32,428 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61103787 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:45:32, skipping insertion in model container [2023-11-29 23:45:32,428 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:45:32" (3/3) ... [2023-11-29 23:45:32,429 INFO L112 eAbstractionObserver]: Analyzing ICFG unroll-cond-4.wvr.c [2023-11-29 23:45:32,439 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 23:45:32,439 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 23:45:32,439 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 23:45:32,513 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-29 23:45:32,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 227 places, 241 transitions, 496 flow [2023-11-29 23:45:32,640 INFO L124 PetriNetUnfolderBase]: 21/239 cut-off events. [2023-11-29 23:45:32,640 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:45:32,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248 conditions, 239 events. 21/239 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 408 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 143. Up to 2 conditions per place. [2023-11-29 23:45:32,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 241 transitions, 496 flow [2023-11-29 23:45:32,659 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 216 places, 230 transitions, 472 flow [2023-11-29 23:45:32,665 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 23:45:32,668 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;@1a8b6340, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 23:45:32,669 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-29 23:45:32,693 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 23:45:32,693 INFO L124 PetriNetUnfolderBase]: 18/201 cut-off events. [2023-11-29 23:45:32,694 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-29 23:45:32,694 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:32,694 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:32,694 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:32,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:32,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1665452309, now seen corresponding path program 1 times [2023-11-29 23:45:32,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:32,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469498146] [2023-11-29 23:45:32,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:32,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:33,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:33,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:33,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469498146] [2023-11-29 23:45:33,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469498146] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:33,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:33,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 23:45:33,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788808001] [2023-11-29 23:45:33,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:33,226 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 23:45:33,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 23:45:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 23:45:33,251 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 241 [2023-11-29 23:45:33,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 230 transitions, 472 flow. Second operand has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-29 23:45:33,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:33,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 241 [2023-11-29 23:45:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:33,464 INFO L124 PetriNetUnfolderBase]: 167/830 cut-off events. [2023-11-29 23:45:33,464 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-11-29 23:45:33,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 830 events. 167/830 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4067 event pairs, 66 based on Foata normal form. 62/749 useless extension candidates. Maximal degree in co-relation 1022. Up to 225 conditions per place. [2023-11-29 23:45:33,472 INFO L140 encePairwiseOnDemand]: 221/241 looper letters, 40 selfloop transitions, 4 changer transitions 4/228 dead transitions. [2023-11-29 23:45:33,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 228 transitions, 562 flow [2023-11-29 23:45:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 23:45:33,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 23:45:33,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 843 transitions. [2023-11-29 23:45:33,487 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8744813278008299 [2023-11-29 23:45:33,488 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 843 transitions. [2023-11-29 23:45:33,488 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 843 transitions. [2023-11-29 23:45:33,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:33,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 843 transitions. [2023-11-29 23:45:33,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 210.75) internal successors, (843), 4 states have internal predecessors, (843), 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) [2023-11-29 23:45:33,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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) [2023-11-29 23:45:33,526 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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) [2023-11-29 23:45:33,529 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 3 predicate places. [2023-11-29 23:45:33,529 INFO L500 AbstractCegarLoop]: Abstraction has has 219 places, 228 transitions, 562 flow [2023-11-29 23:45:33,529 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 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) [2023-11-29 23:45:33,529 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:33,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:33,530 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 23:45:33,530 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:33,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:33,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1409453751, now seen corresponding path program 1 times [2023-11-29 23:45:33,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:33,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120752407] [2023-11-29 23:45:33,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:33,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:33,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:33,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:33,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:33,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120752407] [2023-11-29 23:45:33,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120752407] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:33,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:33,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:45:33,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568234370] [2023-11-29 23:45:33,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:33,781 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:45:33,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:33,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:45:33,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:45:33,784 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 241 [2023-11-29 23:45:33,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 228 transitions, 562 flow. Second operand has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2023-11-29 23:45:33,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:33,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 241 [2023-11-29 23:45:33,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:33,951 INFO L124 PetriNetUnfolderBase]: 177/842 cut-off events. [2023-11-29 23:45:33,951 INFO L125 PetriNetUnfolderBase]: For 201/259 co-relation queries the response was YES. [2023-11-29 23:45:33,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1479 conditions, 842 events. 177/842 cut-off events. For 201/259 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4023 event pairs, 60 based on Foata normal form. 6/706 useless extension candidates. Maximal degree in co-relation 1341. Up to 239 conditions per place. [2023-11-29 23:45:33,954 INFO L140 encePairwiseOnDemand]: 232/241 looper letters, 48 selfloop transitions, 8 changer transitions 4/239 dead transitions. [2023-11-29 23:45:33,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 239 transitions, 725 flow [2023-11-29 23:45:33,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:45:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:45:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1408 transitions. [2023-11-29 23:45:33,957 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8346176644931832 [2023-11-29 23:45:33,957 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1408 transitions. [2023-11-29 23:45:33,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1408 transitions. [2023-11-29 23:45:33,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:33,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1408 transitions. [2023-11-29 23:45:33,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 201.14285714285714) internal successors, (1408), 7 states have internal predecessors, (1408), 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) [2023-11-29 23:45:33,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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) [2023-11-29 23:45:33,963 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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) [2023-11-29 23:45:33,963 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 9 predicate places. [2023-11-29 23:45:33,963 INFO L500 AbstractCegarLoop]: Abstraction has has 225 places, 239 transitions, 725 flow [2023-11-29 23:45:33,964 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 195.5) internal successors, (1173), 6 states have internal predecessors, (1173), 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) [2023-11-29 23:45:33,964 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:33,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:33,964 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 23:45:33,965 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:33,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:33,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1639123481, now seen corresponding path program 1 times [2023-11-29 23:45:33,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:33,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972783525] [2023-11-29 23:45:33,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:33,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:34,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:34,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:34,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:34,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972783525] [2023-11-29 23:45:34,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972783525] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:34,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:34,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:45:34,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058196952] [2023-11-29 23:45:34,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:34,265 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:45:34,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:34,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:45:34,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:45:34,267 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:34,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 239 transitions, 725 flow. Second operand has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:34,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:34,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:34,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:34,486 INFO L124 PetriNetUnfolderBase]: 298/1615 cut-off events. [2023-11-29 23:45:34,489 INFO L125 PetriNetUnfolderBase]: For 575/631 co-relation queries the response was YES. [2023-11-29 23:45:34,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1615 events. 298/1615 cut-off events. For 575/631 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 10949 event pairs, 132 based on Foata normal form. 0/1430 useless extension candidates. Maximal degree in co-relation 2928. Up to 360 conditions per place. [2023-11-29 23:45:34,496 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 89 selfloop transitions, 9 changer transitions 4/280 dead transitions. [2023-11-29 23:45:34,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 280 transitions, 1124 flow [2023-11-29 23:45:34,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-29 23:45:34,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-29 23:45:34,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1422 transitions. [2023-11-29 23:45:34,499 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8429164196799052 [2023-11-29 23:45:34,499 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1422 transitions. [2023-11-29 23:45:34,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1422 transitions. [2023-11-29 23:45:34,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:34,500 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1422 transitions. [2023-11-29 23:45:34,502 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 203.14285714285714) internal successors, (1422), 7 states have internal predecessors, (1422), 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) [2023-11-29 23:45:34,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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) [2023-11-29 23:45:34,505 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 241.0) internal successors, (1928), 8 states have internal predecessors, (1928), 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) [2023-11-29 23:45:34,506 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 15 predicate places. [2023-11-29 23:45:34,506 INFO L500 AbstractCegarLoop]: Abstraction has has 231 places, 280 transitions, 1124 flow [2023-11-29 23:45:34,506 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:34,507 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:34,507 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:34,507 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 23:45:34,507 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:34,507 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:34,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1662949435, now seen corresponding path program 2 times [2023-11-29 23:45:34,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:34,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272282934] [2023-11-29 23:45:34,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:34,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:34,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:34,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272282934] [2023-11-29 23:45:34,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272282934] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:34,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:34,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:45:34,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482614312] [2023-11-29 23:45:34,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:34,760 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:45:34,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:34,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:45:34,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:45:34,763 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 280 transitions, 1124 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:34,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:34,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:34,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:35,133 INFO L124 PetriNetUnfolderBase]: 493/2462 cut-off events. [2023-11-29 23:45:35,133 INFO L125 PetriNetUnfolderBase]: For 1878/2298 co-relation queries the response was YES. [2023-11-29 23:45:35,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5843 conditions, 2462 events. 493/2462 cut-off events. For 1878/2298 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 19072 event pairs, 110 based on Foata normal form. 2/2168 useless extension candidates. Maximal degree in co-relation 5563. Up to 589 conditions per place. [2023-11-29 23:45:35,193 INFO L140 encePairwiseOnDemand]: 233/241 looper letters, 190 selfloop transitions, 22 changer transitions 4/394 dead transitions. [2023-11-29 23:45:35,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 394 transitions, 2467 flow [2023-11-29 23:45:35,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:45:35,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:45:35,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1239 transitions. [2023-11-29 23:45:35,196 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8568464730290456 [2023-11-29 23:45:35,196 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1239 transitions. [2023-11-29 23:45:35,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1239 transitions. [2023-11-29 23:45:35,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:35,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1239 transitions. [2023-11-29 23:45:35,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.5) internal successors, (1239), 6 states have internal predecessors, (1239), 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) [2023-11-29 23:45:35,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:35,202 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:35,203 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 20 predicate places. [2023-11-29 23:45:35,203 INFO L500 AbstractCegarLoop]: Abstraction has has 236 places, 394 transitions, 2467 flow [2023-11-29 23:45:35,204 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:35,204 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:35,204 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:35,205 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 23:45:35,205 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:35,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:35,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1425900383, now seen corresponding path program 3 times [2023-11-29 23:45:35,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:35,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16747987] [2023-11-29 23:45:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:35,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:35,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:35,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:35,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16747987] [2023-11-29 23:45:35,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16747987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:35,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:35,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:45:35,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210287759] [2023-11-29 23:45:35,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:35,409 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:45:35,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:35,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:45:35,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:45:35,411 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:35,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 394 transitions, 2467 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:35,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:35,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:35,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:35,735 INFO L124 PetriNetUnfolderBase]: 538/2616 cut-off events. [2023-11-29 23:45:35,736 INFO L125 PetriNetUnfolderBase]: For 2717/3213 co-relation queries the response was YES. [2023-11-29 23:45:35,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7215 conditions, 2616 events. 538/2616 cut-off events. For 2717/3213 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 20431 event pairs, 144 based on Foata normal form. 20/2325 useless extension candidates. Maximal degree in co-relation 6909. Up to 599 conditions per place. [2023-11-29 23:45:35,751 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 216 selfloop transitions, 22 changer transitions 4/420 dead transitions. [2023-11-29 23:45:35,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 420 transitions, 3196 flow [2023-11-29 23:45:35,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:45:35,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:45:35,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1039 transitions. [2023-11-29 23:45:35,753 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.862240663900415 [2023-11-29 23:45:35,753 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1039 transitions. [2023-11-29 23:45:35,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1039 transitions. [2023-11-29 23:45:35,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:35,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1039 transitions. [2023-11-29 23:45:35,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.8) internal successors, (1039), 5 states have internal predecessors, (1039), 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) [2023-11-29 23:45:35,757 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:35,757 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:35,758 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 24 predicate places. [2023-11-29 23:45:35,758 INFO L500 AbstractCegarLoop]: Abstraction has has 240 places, 420 transitions, 3196 flow [2023-11-29 23:45:35,758 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:35,758 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:35,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:35,759 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 23:45:35,759 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:35,759 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:35,759 INFO L85 PathProgramCache]: Analyzing trace with hash -344467885, now seen corresponding path program 4 times [2023-11-29 23:45:35,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:35,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373678487] [2023-11-29 23:45:35,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:35,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:35,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:35,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373678487] [2023-11-29 23:45:35,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373678487] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:35,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:35,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:45:35,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606479684] [2023-11-29 23:45:35,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:35,896 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:45:35,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:35,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:45:35,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:45:35,897 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:35,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 420 transitions, 3196 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:35,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:35,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:35,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:36,177 INFO L124 PetriNetUnfolderBase]: 532/2579 cut-off events. [2023-11-29 23:45:36,177 INFO L125 PetriNetUnfolderBase]: For 4119/5492 co-relation queries the response was YES. [2023-11-29 23:45:36,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8085 conditions, 2579 events. 532/2579 cut-off events. For 4119/5492 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 19903 event pairs, 140 based on Foata normal form. 31/2285 useless extension candidates. Maximal degree in co-relation 7753. Up to 597 conditions per place. [2023-11-29 23:45:36,191 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 212 selfloop transitions, 19 changer transitions 4/413 dead transitions. [2023-11-29 23:45:36,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 413 transitions, 3568 flow [2023-11-29 23:45:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:45:36,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:45:36,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1035 transitions. [2023-11-29 23:45:36,193 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8589211618257261 [2023-11-29 23:45:36,193 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1035 transitions. [2023-11-29 23:45:36,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1035 transitions. [2023-11-29 23:45:36,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:36,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1035 transitions. [2023-11-29 23:45:36,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 207.0) internal successors, (1035), 5 states have internal predecessors, (1035), 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) [2023-11-29 23:45:36,197 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:36,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:36,197 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 28 predicate places. [2023-11-29 23:45:36,198 INFO L500 AbstractCegarLoop]: Abstraction has has 244 places, 413 transitions, 3568 flow [2023-11-29 23:45:36,198 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:36,198 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:36,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:36,198 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 23:45:36,198 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:36,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:36,199 INFO L85 PathProgramCache]: Analyzing trace with hash 893719747, now seen corresponding path program 5 times [2023-11-29 23:45:36,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:36,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693760949] [2023-11-29 23:45:36,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:36,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:36,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:36,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:36,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693760949] [2023-11-29 23:45:36,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693760949] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:36,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:36,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:45:36,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152089996] [2023-11-29 23:45:36,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:36,389 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:45:36,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:36,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:45:36,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:45:36,391 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:36,392 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 413 transitions, 3568 flow. Second operand has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:36,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:36,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:36,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:36,645 INFO L124 PetriNetUnfolderBase]: 557/2708 cut-off events. [2023-11-29 23:45:36,645 INFO L125 PetriNetUnfolderBase]: For 5857/7496 co-relation queries the response was YES. [2023-11-29 23:45:36,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 2708 events. 557/2708 cut-off events. For 5857/7496 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 21262 event pairs, 140 based on Foata normal form. 30/2403 useless extension candidates. Maximal degree in co-relation 9119. Up to 627 conditions per place. [2023-11-29 23:45:36,662 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 223 selfloop transitions, 20 changer transitions 4/425 dead transitions. [2023-11-29 23:45:36,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 425 transitions, 4214 flow [2023-11-29 23:45:36,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:45:36,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:45:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1236 transitions. [2023-11-29 23:45:36,664 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8547717842323651 [2023-11-29 23:45:36,664 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1236 transitions. [2023-11-29 23:45:36,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1236 transitions. [2023-11-29 23:45:36,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:36,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1236 transitions. [2023-11-29 23:45:36,667 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-11-29 23:45:36,668 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:36,669 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:36,669 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 33 predicate places. [2023-11-29 23:45:36,669 INFO L500 AbstractCegarLoop]: Abstraction has has 249 places, 425 transitions, 4214 flow [2023-11-29 23:45:36,670 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:36,670 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:36,670 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:36,670 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 23:45:36,670 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:36,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:36,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1361621423, now seen corresponding path program 6 times [2023-11-29 23:45:36,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:36,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339083035] [2023-11-29 23:45:36,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:36,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:36,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:36,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:36,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339083035] [2023-11-29 23:45:36,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339083035] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:36,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:36,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:45:36,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268583496] [2023-11-29 23:45:36,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:36,812 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:45:36,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:36,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:45:36,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:45:36,813 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:36,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 425 transitions, 4214 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:36,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:36,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:36,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:37,073 INFO L124 PetriNetUnfolderBase]: 554/2726 cut-off events. [2023-11-29 23:45:37,073 INFO L125 PetriNetUnfolderBase]: For 7304/8263 co-relation queries the response was YES. [2023-11-29 23:45:37,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 2726 events. 554/2726 cut-off events. For 7304/8263 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 21626 event pairs, 143 based on Foata normal form. 21/2433 useless extension candidates. Maximal degree in co-relation 10103. Up to 819 conditions per place. [2023-11-29 23:45:37,088 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 220 selfloop transitions, 21 changer transitions 4/423 dead transitions. [2023-11-29 23:45:37,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 423 transitions, 4664 flow [2023-11-29 23:45:37,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:45:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:45:37,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1022 transitions. [2023-11-29 23:45:37,090 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8481327800829875 [2023-11-29 23:45:37,090 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1022 transitions. [2023-11-29 23:45:37,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1022 transitions. [2023-11-29 23:45:37,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:37,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1022 transitions. [2023-11-29 23:45:37,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 204.4) internal successors, (1022), 5 states have internal predecessors, (1022), 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) [2023-11-29 23:45:37,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:37,094 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:37,094 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 37 predicate places. [2023-11-29 23:45:37,094 INFO L500 AbstractCegarLoop]: Abstraction has has 253 places, 423 transitions, 4664 flow [2023-11-29 23:45:37,095 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:37,095 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:37,095 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:37,095 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 23:45:37,095 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:37,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:37,096 INFO L85 PathProgramCache]: Analyzing trace with hash -755919061, now seen corresponding path program 7 times [2023-11-29 23:45:37,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:37,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377940299] [2023-11-29 23:45:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:37,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:37,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:37,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377940299] [2023-11-29 23:45:37,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377940299] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:37,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:37,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 23:45:37,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375095178] [2023-11-29 23:45:37,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:37,270 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 23:45:37,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:37,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 23:45:37,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 23:45:37,271 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:37,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 423 transitions, 4664 flow. Second operand has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:37,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:37,543 INFO L124 PetriNetUnfolderBase]: 545/2662 cut-off events. [2023-11-29 23:45:37,543 INFO L125 PetriNetUnfolderBase]: For 10774/13465 co-relation queries the response was YES. [2023-11-29 23:45:37,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11334 conditions, 2662 events. 545/2662 cut-off events. For 10774/13465 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 20960 event pairs, 126 based on Foata normal form. 14/2351 useless extension candidates. Maximal degree in co-relation 10924. Up to 817 conditions per place. [2023-11-29 23:45:37,557 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 216 selfloop transitions, 19 changer transitions 4/417 dead transitions. [2023-11-29 23:45:37,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 417 transitions, 5020 flow [2023-11-29 23:45:37,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 23:45:37,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-29 23:45:37,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1018 transitions. [2023-11-29 23:45:37,559 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8448132780082988 [2023-11-29 23:45:37,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1018 transitions. [2023-11-29 23:45:37,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1018 transitions. [2023-11-29 23:45:37,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:37,560 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1018 transitions. [2023-11-29 23:45:37,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 203.6) internal successors, (1018), 5 states have internal predecessors, (1018), 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) [2023-11-29 23:45:37,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:37,563 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 241.0) internal successors, (1446), 6 states have internal predecessors, (1446), 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) [2023-11-29 23:45:37,563 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 41 predicate places. [2023-11-29 23:45:37,564 INFO L500 AbstractCegarLoop]: Abstraction has has 257 places, 417 transitions, 5020 flow [2023-11-29 23:45:37,564 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 194.4) internal successors, (972), 5 states have internal predecessors, (972), 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) [2023-11-29 23:45:37,564 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:37,564 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:37,564 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 23:45:37,564 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:37,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:37,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1526847949, now seen corresponding path program 8 times [2023-11-29 23:45:37,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:37,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310432177] [2023-11-29 23:45:37,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:37,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:37,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:37,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:37,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310432177] [2023-11-29 23:45:37,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310432177] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:37,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 23:45:37,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 23:45:37,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999679099] [2023-11-29 23:45:37,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:37,701 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 23:45:37,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:37,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 23:45:37,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-29 23:45:37,702 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 241 [2023-11-29 23:45:37,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 417 transitions, 5020 flow. Second operand has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:37,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:37,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 241 [2023-11-29 23:45:37,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:37,977 INFO L124 PetriNetUnfolderBase]: 531/2641 cut-off events. [2023-11-29 23:45:37,977 INFO L125 PetriNetUnfolderBase]: For 10897/11816 co-relation queries the response was YES. [2023-11-29 23:45:37,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11973 conditions, 2641 events. 531/2641 cut-off events. For 10897/11816 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 20626 event pairs, 127 based on Foata normal form. 15/2357 useless extension candidates. Maximal degree in co-relation 10486. Up to 784 conditions per place. [2023-11-29 23:45:37,992 INFO L140 encePairwiseOnDemand]: 234/241 looper letters, 201 selfloop transitions, 20 changer transitions 4/403 dead transitions. [2023-11-29 23:45:37,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 403 transitions, 5170 flow [2023-11-29 23:45:37,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-29 23:45:37,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-29 23:45:37,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1222 transitions. [2023-11-29 23:45:37,995 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.8450899031811895 [2023-11-29 23:45:37,995 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1222 transitions. [2023-11-29 23:45:37,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1222 transitions. [2023-11-29 23:45:37,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:37,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1222 transitions. [2023-11-29 23:45:37,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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) [2023-11-29 23:45:37,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:37,999 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 241.0) internal successors, (1687), 7 states have internal predecessors, (1687), 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) [2023-11-29 23:45:37,999 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 46 predicate places. [2023-11-29 23:45:38,000 INFO L500 AbstractCegarLoop]: Abstraction has has 262 places, 403 transitions, 5170 flow [2023-11-29 23:45:38,000 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 193.83333333333334) internal successors, (1163), 6 states have internal predecessors, (1163), 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) [2023-11-29 23:45:38,000 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:38,000 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:38,000 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-29 23:45:38,000 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:38,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:38,001 INFO L85 PathProgramCache]: Analyzing trace with hash -988976769, now seen corresponding path program 1 times [2023-11-29 23:45:38,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:38,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925671227] [2023-11-29 23:45:38,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:38,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:38,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:38,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:38,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925671227] [2023-11-29 23:45:38,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925671227] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:45:38,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648404867] [2023-11-29 23:45:38,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:38,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:45:38,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:45:38,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:45:38,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 23:45:38,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:38,328 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-29 23:45:38,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:45:38,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:45:38,513 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 23:45:38,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648404867] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 23:45:38,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-29 23:45:38,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2023-11-29 23:45:38,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40417456] [2023-11-29 23:45:38,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 23:45:38,513 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-29 23:45:38,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:38,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-29 23:45:38,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2023-11-29 23:45:38,515 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 241 [2023-11-29 23:45:38,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 403 transitions, 5170 flow. Second operand has 8 states, 8 states have (on average 156.875) internal successors, (1255), 8 states have internal predecessors, (1255), 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) [2023-11-29 23:45:38,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:38,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 241 [2023-11-29 23:45:38,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:39,073 INFO L124 PetriNetUnfolderBase]: 1018/3922 cut-off events. [2023-11-29 23:45:39,073 INFO L125 PetriNetUnfolderBase]: For 30202/32675 co-relation queries the response was YES. [2023-11-29 23:45:39,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19244 conditions, 3922 events. 1018/3922 cut-off events. For 30202/32675 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 32407 event pairs, 418 based on Foata normal form. 6/3514 useless extension candidates. Maximal degree in co-relation 12678. Up to 1319 conditions per place. [2023-11-29 23:45:39,096 INFO L140 encePairwiseOnDemand]: 218/241 looper letters, 78 selfloop transitions, 15 changer transitions 51/455 dead transitions. [2023-11-29 23:45:39,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 455 transitions, 6290 flow [2023-11-29 23:45:39,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 23:45:39,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 23:45:39,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1936 transitions. [2023-11-29 23:45:39,100 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.669432918395574 [2023-11-29 23:45:39,100 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1936 transitions. [2023-11-29 23:45:39,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1936 transitions. [2023-11-29 23:45:39,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:39,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1936 transitions. [2023-11-29 23:45:39,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 161.33333333333334) internal successors, (1936), 12 states have internal predecessors, (1936), 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) [2023-11-29 23:45:39,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 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) [2023-11-29 23:45:39,107 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 241.0) internal successors, (3133), 13 states have internal predecessors, (3133), 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) [2023-11-29 23:45:39,107 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 57 predicate places. [2023-11-29 23:45:39,107 INFO L500 AbstractCegarLoop]: Abstraction has has 273 places, 455 transitions, 6290 flow [2023-11-29 23:45:39,107 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.875) internal successors, (1255), 8 states have internal predecessors, (1255), 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) [2023-11-29 23:45:39,108 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:39,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:39,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-29 23:45:39,311 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-29 23:45:39,312 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:39,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:39,312 INFO L85 PathProgramCache]: Analyzing trace with hash 20562829, now seen corresponding path program 1 times [2023-11-29 23:45:39,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:39,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541384506] [2023-11-29 23:45:39,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:39,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:39,541 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:45:39,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541384506] [2023-11-29 23:45:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541384506] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:45:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1152604079] [2023-11-29 23:45:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:39,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:45:39,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:45:39,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:45:39,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 23:45:39,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:39,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 33 conjunts are in the unsatisfiable core [2023-11-29 23:45:39,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:45:40,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:45:40,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:40,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:45:40,546 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:45:40,547 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:45:41,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:41,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1152604079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:45:41,168 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:45:41,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 18, 18] total 35 [2023-11-29 23:45:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362717385] [2023-11-29 23:45:41,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:45:41,169 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-11-29 23:45:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:45:41,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-11-29 23:45:41,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1081, Unknown=0, NotChecked=0, Total=1190 [2023-11-29 23:45:41,172 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 241 [2023-11-29 23:45:41,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 455 transitions, 6290 flow. Second operand has 35 states, 35 states have (on average 74.94285714285714) internal successors, (2623), 35 states have internal predecessors, (2623), 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) [2023-11-29 23:45:41,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:45:41,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 241 [2023-11-29 23:45:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:45:58,125 INFO L124 PetriNetUnfolderBase]: 30671/62435 cut-off events. [2023-11-29 23:45:58,126 INFO L125 PetriNetUnfolderBase]: For 404664/405636 co-relation queries the response was YES. [2023-11-29 23:45:58,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274679 conditions, 62435 events. 30671/62435 cut-off events. For 404664/405636 co-relation queries the response was YES. Maximal size of possible extension queue 921. Compared 633285 event pairs, 1891 based on Foata normal form. 78/57351 useless extension candidates. Maximal degree in co-relation 190182. Up to 12031 conditions per place. [2023-11-29 23:45:58,635 INFO L140 encePairwiseOnDemand]: 152/241 looper letters, 3026 selfloop transitions, 767 changer transitions 818/4670 dead transitions. [2023-11-29 23:45:58,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 4670 transitions, 62149 flow [2023-11-29 23:45:58,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2023-11-29 23:45:58,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2023-11-29 23:45:58,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 15947 transitions. [2023-11-29 23:45:58,656 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.35196874724110533 [2023-11-29 23:45:58,657 INFO L72 ComplementDD]: Start complementDD. Operand 188 states and 15947 transitions. [2023-11-29 23:45:58,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 188 states and 15947 transitions. [2023-11-29 23:45:58,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:45:58,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 188 states and 15947 transitions. [2023-11-29 23:45:58,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 189 states, 188 states have (on average 84.82446808510639) internal successors, (15947), 188 states have internal predecessors, (15947), 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) [2023-11-29 23:45:58,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 189 states, 189 states have (on average 241.0) internal successors, (45549), 189 states have internal predecessors, (45549), 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) [2023-11-29 23:45:58,753 INFO L81 ComplementDD]: Finished complementDD. Result has 189 states, 189 states have (on average 241.0) internal successors, (45549), 189 states have internal predecessors, (45549), 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) [2023-11-29 23:45:58,753 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 244 predicate places. [2023-11-29 23:45:58,753 INFO L500 AbstractCegarLoop]: Abstraction has has 460 places, 4670 transitions, 62149 flow [2023-11-29 23:45:58,754 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 74.94285714285714) internal successors, (2623), 35 states have internal predecessors, (2623), 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) [2023-11-29 23:45:58,754 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:45:58,754 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:45:58,759 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 23:45:58,955 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-29 23:45:58,955 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:45:58,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:45:58,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1221217921, now seen corresponding path program 2 times [2023-11-29 23:45:58,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:45:58,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823196338] [2023-11-29 23:45:58,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:45:58,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:45:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:45:59,227 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:45:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:45:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823196338] [2023-11-29 23:45:59,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823196338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:45:59,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883139300] [2023-11-29 23:45:59,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-29 23:45:59,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:45:59,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:45:59,244 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:45:59,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 23:45:59,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:45:59,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:45:59,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 23:45:59,369 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:45:59,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:45:59,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:45:59,922 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:46:00,096 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:46:00,097 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:46:00,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:46:00,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883139300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:46:00,724 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:46:00,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 40 [2023-11-29 23:46:00,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77414458] [2023-11-29 23:46:00,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:46:00,727 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-11-29 23:46:00,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:46:00,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-11-29 23:46:00,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1403, Unknown=0, NotChecked=0, Total=1560 [2023-11-29 23:46:00,730 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 241 [2023-11-29 23:46:00,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 4670 transitions, 62149 flow. Second operand has 40 states, 40 states have (on average 66.4) internal successors, (2656), 40 states have internal predecessors, (2656), 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) [2023-11-29 23:46:00,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:46:00,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 241 [2023-11-29 23:46:00,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:46:49,676 INFO L124 PetriNetUnfolderBase]: 49518/101979 cut-off events. [2023-11-29 23:46:49,677 INFO L125 PetriNetUnfolderBase]: For 639518/643064 co-relation queries the response was YES. [2023-11-29 23:46:50,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514808 conditions, 101979 events. 49518/101979 cut-off events. For 639518/643064 co-relation queries the response was YES. Maximal size of possible extension queue 2100. Compared 1116988 event pairs, 1939 based on Foata normal form. 546/95037 useless extension candidates. Maximal degree in co-relation 374907. Up to 28465 conditions per place. [2023-11-29 23:46:50,429 INFO L140 encePairwiseOnDemand]: 145/241 looper letters, 6482 selfloop transitions, 1287 changer transitions 1883/9704 dead transitions. [2023-11-29 23:46:50,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 753 places, 9704 transitions, 138697 flow [2023-11-29 23:46:50,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 294 states. [2023-11-29 23:46:50,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2023-11-29 23:46:50,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 20774 transitions. [2023-11-29 23:46:50,446 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.2931944562057188 [2023-11-29 23:46:50,446 INFO L72 ComplementDD]: Start complementDD. Operand 294 states and 20774 transitions. [2023-11-29 23:46:50,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 294 states and 20774 transitions. [2023-11-29 23:46:50,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:46:50,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 294 states and 20774 transitions. [2023-11-29 23:46:50,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 295 states, 294 states have (on average 70.65986394557824) internal successors, (20774), 294 states have internal predecessors, (20774), 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) [2023-11-29 23:46:50,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 295 states, 295 states have (on average 241.0) internal successors, (71095), 295 states have internal predecessors, (71095), 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) [2023-11-29 23:46:50,529 INFO L81 ComplementDD]: Finished complementDD. Result has 295 states, 295 states have (on average 241.0) internal successors, (71095), 295 states have internal predecessors, (71095), 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) [2023-11-29 23:46:50,530 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 537 predicate places. [2023-11-29 23:46:50,530 INFO L500 AbstractCegarLoop]: Abstraction has has 753 places, 9704 transitions, 138697 flow [2023-11-29 23:46:50,530 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 66.4) internal successors, (2656), 40 states have internal predecessors, (2656), 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) [2023-11-29 23:46:50,530 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:46:50,530 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:46:50,551 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 23:46:50,734 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:46:50,734 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:46:50,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:46:50,735 INFO L85 PathProgramCache]: Analyzing trace with hash -298679621, now seen corresponding path program 3 times [2023-11-29 23:46:50,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:46:50,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885205669] [2023-11-29 23:46:50,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:46:50,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:46:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:46:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:46:51,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:46:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885205669] [2023-11-29 23:46:51,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885205669] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:46:51,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037416446] [2023-11-29 23:46:51,208 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-29 23:46:51,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:46:51,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:46:51,228 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:46:51,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 23:46:51,356 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-29 23:46:51,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:46:51,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 50 conjunts are in the unsatisfiable core [2023-11-29 23:46:51,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:46:51,640 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 23:46:51,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:46:51,920 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:46:51,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 23:46:52,076 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:46:52,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:46:52,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:46:53,088 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:46:53,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2023-11-29 23:46:53,097 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:46:53,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 162 [2023-11-29 23:46:53,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-11-29 23:46:53,108 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:46:53,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-29 23:46:53,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:46:53,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037416446] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:46:53,641 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:46:53,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 27, 27] total 54 [2023-11-29 23:46:53,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964672878] [2023-11-29 23:46:53,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:46:53,642 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2023-11-29 23:46:53,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:46:53,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2023-11-29 23:46:53,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=2666, Unknown=16, NotChecked=0, Total=2862 [2023-11-29 23:46:53,645 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 241 [2023-11-29 23:46:53,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 753 places, 9704 transitions, 138697 flow. Second operand has 54 states, 54 states have (on average 58.111111111111114) internal successors, (3138), 54 states have internal predecessors, (3138), 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) [2023-11-29 23:46:53,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:46:53,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 241 [2023-11-29 23:46:53,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:48:51,805 INFO L124 PetriNetUnfolderBase]: 67068/138148 cut-off events. [2023-11-29 23:48:51,805 INFO L125 PetriNetUnfolderBase]: For 933749/944349 co-relation queries the response was YES. [2023-11-29 23:48:52,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811990 conditions, 138148 events. 67068/138148 cut-off events. For 933749/944349 co-relation queries the response was YES. Maximal size of possible extension queue 2663. Compared 1571841 event pairs, 2208 based on Foata normal form. 1466/129814 useless extension candidates. Maximal degree in co-relation 613164. Up to 45166 conditions per place. [2023-11-29 23:48:53,093 INFO L140 encePairwiseOnDemand]: 141/241 looper letters, 9469 selfloop transitions, 2874 changer transitions 2970/15362 dead transitions. [2023-11-29 23:48:53,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1045 places, 15362 transitions, 238571 flow [2023-11-29 23:48:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 293 states. [2023-11-29 23:48:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2023-11-29 23:48:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 18849 transitions. [2023-11-29 23:48:53,108 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.26693385070737685 [2023-11-29 23:48:53,108 INFO L72 ComplementDD]: Start complementDD. Operand 293 states and 18849 transitions. [2023-11-29 23:48:53,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 293 states and 18849 transitions. [2023-11-29 23:48:53,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:48:53,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 293 states and 18849 transitions. [2023-11-29 23:48:53,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 294 states, 293 states have (on average 64.33105802047781) internal successors, (18849), 293 states have internal predecessors, (18849), 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) [2023-11-29 23:48:53,164 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 294 states, 294 states have (on average 241.0) internal successors, (70854), 294 states have internal predecessors, (70854), 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) [2023-11-29 23:48:53,175 INFO L81 ComplementDD]: Finished complementDD. Result has 294 states, 294 states have (on average 241.0) internal successors, (70854), 294 states have internal predecessors, (70854), 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) [2023-11-29 23:48:53,176 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 829 predicate places. [2023-11-29 23:48:53,176 INFO L500 AbstractCegarLoop]: Abstraction has has 1045 places, 15362 transitions, 238571 flow [2023-11-29 23:48:53,177 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 58.111111111111114) internal successors, (3138), 54 states have internal predecessors, (3138), 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) [2023-11-29 23:48:53,177 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:48:53,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:48:53,198 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 23:48:53,381 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:48:53,381 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:48:53,381 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:48:53,381 INFO L85 PathProgramCache]: Analyzing trace with hash -333901201, now seen corresponding path program 4 times [2023-11-29 23:48:53,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:48:53,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274795564] [2023-11-29 23:48:53,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:48:53,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:48:53,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:48:53,706 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:48:53,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:48:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274795564] [2023-11-29 23:48:53,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274795564] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:48:53,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1249754778] [2023-11-29 23:48:53,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-29 23:48:53,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:48:53,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:48:53,707 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:48:53,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 23:48:53,797 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-29 23:48:53,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:48:53,798 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 52 conjunts are in the unsatisfiable core [2023-11-29 23:48:53,800 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:48:54,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 23:48:54,259 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2023-11-29 23:48:54,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-29 23:48:54,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 11 [2023-11-29 23:48:54,519 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:48:54,602 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:54,603 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:48:55,421 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:48:55,421 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2023-11-29 23:48:55,426 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:48:55,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 202 treesize of output 162 [2023-11-29 23:48:55,437 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 72 treesize of output 60 [2023-11-29 23:48:55,448 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 23:48:55,448 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 29 [2023-11-29 23:48:55,870 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:48:55,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1249754778] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:48:55,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:48:55,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 27, 27] total 55 [2023-11-29 23:48:55,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888253185] [2023-11-29 23:48:55,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:48:55,871 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2023-11-29 23:48:55,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:48:55,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2023-11-29 23:48:55,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2770, Unknown=18, NotChecked=0, Total=2970 [2023-11-29 23:48:55,874 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 241 [2023-11-29 23:48:55,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1045 places, 15362 transitions, 238571 flow. Second operand has 55 states, 55 states have (on average 58.018181818181816) internal successors, (3191), 55 states have internal predecessors, (3191), 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) [2023-11-29 23:48:55,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:48:55,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 241 [2023-11-29 23:48:55,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 23:52:41,448 INFO L124 PetriNetUnfolderBase]: 79015/161554 cut-off events. [2023-11-29 23:52:41,449 INFO L125 PetriNetUnfolderBase]: For 1185890/1200314 co-relation queries the response was YES. [2023-11-29 23:52:42,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1092109 conditions, 161554 events. 79015/161554 cut-off events. For 1185890/1200314 co-relation queries the response was YES. Maximal size of possible extension queue 2999. Compared 1867257 event pairs, 1955 based on Foata normal form. 1998/152226 useless extension candidates. Maximal degree in co-relation 755728. Up to 60760 conditions per place. [2023-11-29 23:52:43,132 INFO L140 encePairwiseOnDemand]: 143/241 looper letters, 10824 selfloop transitions, 4714 changer transitions 3801/19388 dead transitions. [2023-11-29 23:52:43,132 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1400 places, 19388 transitions, 335045 flow [2023-11-29 23:52:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 356 states. [2023-11-29 23:52:43,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2023-11-29 23:52:43,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 23088 transitions. [2023-11-29 23:52:43,179 INFO L542 CegarLoopForPetriNet]: DFA transition density 0.26910345470651315 [2023-11-29 23:52:43,179 INFO L72 ComplementDD]: Start complementDD. Operand 356 states and 23088 transitions. [2023-11-29 23:52:43,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 356 states and 23088 transitions. [2023-11-29 23:52:43,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 23:52:43,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 356 states and 23088 transitions. [2023-11-29 23:52:43,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 357 states, 356 states have (on average 64.85393258426966) internal successors, (23088), 356 states have internal predecessors, (23088), 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) [2023-11-29 23:52:43,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 357 states, 357 states have (on average 241.0) internal successors, (86037), 357 states have internal predecessors, (86037), 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) [2023-11-29 23:52:43,291 INFO L81 ComplementDD]: Finished complementDD. Result has 357 states, 357 states have (on average 241.0) internal successors, (86037), 357 states have internal predecessors, (86037), 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) [2023-11-29 23:52:43,292 INFO L307 CegarLoopForPetriNet]: 216 programPoint places, 1184 predicate places. [2023-11-29 23:52:43,292 INFO L500 AbstractCegarLoop]: Abstraction has has 1400 places, 19388 transitions, 335045 flow [2023-11-29 23:52:43,293 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 58.018181818181816) internal successors, (3191), 55 states have internal predecessors, (3191), 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) [2023-11-29 23:52:43,293 INFO L224 CegarLoopForPetriNet]: Found error trace [2023-11-29 23:52:43,293 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 23:52:43,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-29 23:52:43,498 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-29 23:52:43,499 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-29 23:52:43,499 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 23:52:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash 120508427, now seen corresponding path program 5 times [2023-11-29 23:52:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 23:52:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561368019] [2023-11-29 23:52:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 23:52:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 23:52:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 23:52:43,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-29 23:52:43,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 23:52:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561368019] [2023-11-29 23:52:43,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561368019] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-29 23:52:43,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074960161] [2023-11-29 23:52:43,804 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-29 23:52:43,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 23:52:43,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-29 23:52:43,805 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 23:52:43,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 23:52:43,912 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-29 23:52:43,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-29 23:52:43,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 39 conjunts are in the unsatisfiable core [2023-11-29 23:52:43,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 23:52:44,382 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 23:52:44,450 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:52:44,450 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-29 23:52:44,617 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2023-11-29 23:52:44,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 7 [2023-11-29 23:52:45,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 23:52:45,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074960161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-29 23:52:45,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-29 23:52:45,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 23, 18] total 41 [2023-11-29 23:52:45,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728055504] [2023-11-29 23:52:45,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-29 23:52:45,161 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2023-11-29 23:52:45,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 23:52:45,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2023-11-29 23:52:45,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=1481, Unknown=0, NotChecked=0, Total=1640 [2023-11-29 23:52:45,164 INFO L497 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 241 [2023-11-29 23:52:45,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1400 places, 19388 transitions, 335045 flow. Second operand has 41 states, 41 states have (on average 66.29268292682927) internal successors, (2718), 41 states have internal predecessors, (2718), 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) [2023-11-29 23:52:45,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 23:52:45,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 241 [2023-11-29 23:52:45,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-11-29 23:58:54,606 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:58:54,607 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-29 23:58:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 292 states. [2023-11-29 23:58:55,340 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-29 23:58:55,345 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-29 23:58:55,545 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-29 23:58:55,545 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 60/241 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1443772 conditions, 189822 events (93931/189821 cut-off events. For 1468856/1492503 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 2255161 event pairs, 1903 based on Foata normal form. 1878/178585 useless extension candidates. Maximal degree in co-relation 1003124. Up to 72451 conditions per place.). [2023-11-29 23:58:55,547 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-29 23:58:55,547 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-29 23:58:55,548 INFO L457 BasicCegarLoop]: Path program histogram: [8, 5, 1, 1, 1] [2023-11-29 23:58:55,550 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 23:58:55,551 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 23:58:55,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 11:58:55 BasicIcfg [2023-11-29 23:58:55,554 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 23:58:55,554 INFO L158 Benchmark]: Toolchain (without parser) took 803782.25ms. Allocated memory was 585.1MB in the beginning and 6.6GB in the end (delta: 6.0GB). Free memory was 546.4MB in the beginning and 2.9GB in the end (delta: -2.3GB). Peak memory consumption was 5.0GB. Max. memory is 16.0GB. [2023-11-29 23:58:55,554 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 343.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-11-29 23:58:55,554 INFO L158 Benchmark]: CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 585.1MB. Free memory was 546.4MB in the beginning and 534.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-11-29 23:58:55,555 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.47ms. Allocated memory is still 585.1MB. Free memory was 534.3MB in the beginning and 532.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:58:55,555 INFO L158 Benchmark]: Boogie Preprocessor took 18.64ms. Allocated memory is still 585.1MB. Free memory was 531.8MB in the beginning and 530.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-11-29 23:58:55,556 INFO L158 Benchmark]: RCFGBuilder took 422.98ms. Allocated memory is still 585.1MB. Free memory was 530.1MB in the beginning and 510.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-11-29 23:58:55,557 INFO L158 Benchmark]: TraceAbstraction took 803128.20ms. Allocated memory was 585.1MB in the beginning and 6.6GB in the end (delta: 6.0GB). Free memory was 509.1MB in the beginning and 2.9GB in the end (delta: -2.3GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-11-29 23:58:55,560 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 392.2MB. Free memory is still 343.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 182.27ms. Allocated memory is still 585.1MB. Free memory was 546.4MB in the beginning and 534.3MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 26.47ms. Allocated memory is still 585.1MB. Free memory was 534.3MB in the beginning and 532.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.64ms. Allocated memory is still 585.1MB. Free memory was 531.8MB in the beginning and 530.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 422.98ms. Allocated memory is still 585.1MB. Free memory was 530.1MB in the beginning and 510.0MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 803128.20ms. Allocated memory was 585.1MB in the beginning and 6.6GB in the end (delta: 6.0GB). Free memory was 509.1MB in the beginning and 2.9GB in the end (delta: -2.3GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 60/241 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1443772 conditions, 189822 events (93931/189821 cut-off events. For 1468856/1492503 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 2255161 event pairs, 1903 based on Foata normal form. 1878/178585 useless extension candidates. Maximal degree in co-relation 1003124. Up to 72451 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 60/241 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1443772 conditions, 189822 events (93931/189821 cut-off events. For 1468856/1492503 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 2255161 event pairs, 1903 based on Foata normal form. 1878/178585 useless extension candidates. Maximal degree in co-relation 1003124. Up to 72451 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (41states, 60/241 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1443772 conditions, 189822 events (93931/189821 cut-off events. For 1468856/1492503 co-relation queries the response was YES. Maximal size of possible extension queue 3863. Compared 2255161 event pairs, 1903 based on Foata normal form. 1878/178585 useless extension candidates. Maximal degree in co-relation 1003124. Up to 72451 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 342 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 803.0s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 788.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 47 mSolverCounterUnknown, 29297 SdHoareTripleChecker+Valid, 25.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 29297 mSDsluCounter, 64935 SdHoareTripleChecker+Invalid, 21.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62067 mSDsCounter, 1474 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 54928 IncrementalHoareTripleChecker+Invalid, 56449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1474 mSolverCounterUnsat, 2868 mSDtfsCounter, 54928 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3030 GetRequests, 1390 SyntacticMatches, 2 SemanticMatches, 1638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211348 ImplicationChecksByTransitivity, 46.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335045occurred in iteration=15, InterpolantAutomatonStates: 1199, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.3s InterpolantComputationTime, 2796 NumberOfCodeBlocks, 2796 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 3464 ConstructedInterpolants, 160 QuantifiedInterpolants, 24149 SizeOfPredicates, 151 NumberOfNonLiveVariables, 1726 ConjunctsInSsa, 222 ConjunctsInUnsatCore, 27 InterpolantComputations, 11 PerfectInterpolantSequences, 6/32 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown