/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -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/popl20-more-nonblocking-counter-alt2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.4-wip.dk.empire-owicki-a20a710-m [2023-12-09 15:28:04,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-09 15:28:04,962 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 [2023-12-09 15:28:04,996 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-09 15:28:04,998 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-09 15:28:04,998 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-09 15:28:04,999 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-09 15:28:04,999 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-09 15:28:04,999 INFO L153 SettingsManager]: * Use SBE=true [2023-12-09 15:28:05,003 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-09 15:28:05,003 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-09 15:28:05,004 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-09 15:28:05,004 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-09 15:28:05,005 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-09 15:28:05,005 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-09 15:28:05,006 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-09 15:28:05,006 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-09 15:28:05,006 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-09 15:28:05,006 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-09 15:28:05,007 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-09 15:28:05,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-09 15:28:05,007 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-09 15:28:05,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-09 15:28:05,008 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-12-09 15:28:05,008 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-09 15:28:05,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:28:05,009 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-09 15:28:05,009 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-09 15:28:05,009 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-09 15:28:05,009 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-09 15:28:05,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-09 15:28:05,010 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-09 15:28:05,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-09 15:28:05,011 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> true [2023-12-09 15:28:05,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-09 15:28:05,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-09 15:28:05,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-09 15:28:05,278 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-09 15:28:05,278 INFO L274 PluginConnector]: CDTParser initialized [2023-12-09 15:28:05,279 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-09 15:28:06,340 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-09 15:28:06,441 INFO L384 CDTParser]: Found 1 translation units. [2023-12-09 15:28:06,442 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-09 15:28:06,447 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f2e4087/8819a589abb940f5ac62496526bd94f6/FLAG2b12f73c0 [2023-12-09 15:28:06,456 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99f2e4087/8819a589abb940f5ac62496526bd94f6 [2023-12-09 15:28:06,457 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-09 15:28:06,458 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-09 15:28:06,459 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-09 15:28:06,459 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-09 15:28:06,462 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-09 15:28:06,462 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,463 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@366d46e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06, skipping insertion in model container [2023-12-09 15:28:06,463 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,476 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-09 15:28:06,600 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2023-12-09 15:28:06,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:28:06,612 INFO L202 MainTranslator]: Completed pre-run [2023-12-09 15:28:06,631 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/popl20-more-nonblocking-counter-alt2.wvr.c[2173,2186] [2023-12-09 15:28:06,635 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-09 15:28:06,640 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:28:06,640 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-09 15:28:06,645 INFO L206 MainTranslator]: Completed translation [2023-12-09 15:28:06,645 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06 WrapperNode [2023-12-09 15:28:06,645 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-09 15:28:06,646 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-09 15:28:06,646 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-09 15:28:06,646 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-09 15:28:06,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,656 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,668 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-12-09 15:28:06,668 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-09 15:28:06,669 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-09 15:28:06,669 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-09 15:28:06,669 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-09 15:28:06,675 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,676 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,684 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,687 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,690 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,690 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,691 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-09 15:28:06,692 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-09 15:28:06,692 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-09 15:28:06,692 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-09 15:28:06,692 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (1/1) ... [2023-12-09 15:28:06,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-09 15:28:06,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:06,717 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) [2023-12-09 15:28:06,724 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 [2023-12-09 15:28:06,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-09 15:28:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-09 15:28:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-09 15:28:06,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-09 15:28:06,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-09 15:28:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-09 15:28:06,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-09 15:28:06,739 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-09 15:28:06,809 INFO L241 CfgBuilder]: Building ICFG [2023-12-09 15:28:06,810 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-09 15:28:06,948 INFO L282 CfgBuilder]: Performing block encoding [2023-12-09 15:28:06,973 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-09 15:28:06,973 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-09 15:28:06,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:28:06 BoogieIcfgContainer [2023-12-09 15:28:06,974 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-09 15:28:06,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-09 15:28:06,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-09 15:28:06,977 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-09 15:28:06,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 03:28:06" (1/3) ... [2023-12-09 15:28:06,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afa8cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:28:06, skipping insertion in model container [2023-12-09 15:28:06,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:28:06" (2/3) ... [2023-12-09 15:28:06,978 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3afa8cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 03:28:06, skipping insertion in model container [2023-12-09 15:28:06,978 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:28:06" (3/3) ... [2023-12-09 15:28:06,979 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-nonblocking-counter-alt2.wvr.c [2023-12-09 15:28:06,990 INFO L197 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-09 15:28:06,990 INFO L156 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-09 15:28:06,990 INFO L508 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-09 15:28:07,044 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-12-09 15:28:07,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 86 places, 85 transitions, 184 flow [2023-12-09 15:28:07,110 INFO L124 PetriNetUnfolderBase]: 6/83 cut-off events. [2023-12-09 15:28:07,110 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:28:07,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 83 events. 6/83 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/76 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-12-09 15:28:07,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 86 places, 85 transitions, 184 flow [2023-12-09 15:28:07,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 75 places, 74 transitions, 160 flow [2023-12-09 15:28:07,123 INFO L361 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-09 15:28:07,127 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;@3b767d65, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-09 15:28:07,127 INFO L363 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-09 15:28:07,142 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-12-09 15:28:07,142 INFO L124 PetriNetUnfolderBase]: 6/73 cut-off events. [2023-12-09 15:28:07,142 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-12-09 15:28:07,143 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:07,143 INFO L233 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] [2023-12-09 15:28:07,143 INFO L425 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:07,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1669637266, now seen corresponding path program 1 times [2023-12-09 15:28:07,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:07,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785849689] [2023-12-09 15:28:07,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:07,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:07,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:07,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:07,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785849689] [2023-12-09 15:28:07,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785849689] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:07,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:07,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-09 15:28:07,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032698689] [2023-12-09 15:28:07,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:07,683 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:28:07,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:07,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:28:07,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-12-09 15:28:07,711 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 85 [2023-12-09 15:28:07,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 74 transitions, 160 flow. Second operand has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-12-09 15:28:07,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:07,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 85 [2023-12-09 15:28:07,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:07,838 INFO L124 PetriNetUnfolderBase]: 58/184 cut-off events. [2023-12-09 15:28:07,838 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-12-09 15:28:07,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 184 events. 58/184 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 545 event pairs, 24 based on Foata normal form. 2/158 useless extension candidates. Maximal degree in co-relation 243. Up to 85 conditions per place. [2023-12-09 15:28:07,840 INFO L140 encePairwiseOnDemand]: 75/85 looper letters, 29 selfloop transitions, 5 changer transitions 2/77 dead transitions. [2023-12-09 15:28:07,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 77 transitions, 241 flow [2023-12-09 15:28:07,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:28:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:28:07,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 349 transitions. [2023-12-09 15:28:07,855 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6843137254901961 [2023-12-09 15:28:07,856 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 349 transitions. [2023-12-09 15:28:07,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 349 transitions. [2023-12-09 15:28:07,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:07,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 349 transitions. [2023-12-09 15:28:07,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 58.166666666666664) internal successors, (349), 6 states have internal predecessors, (349), 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) [2023-12-09 15:28:07,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-12-09 15:28:07,869 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-12-09 15:28:07,872 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 5 predicate places. [2023-12-09 15:28:07,872 INFO L500 AbstractCegarLoop]: Abstraction has has 80 places, 77 transitions, 241 flow [2023-12-09 15:28:07,873 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 54.666666666666664) internal successors, (328), 6 states have internal predecessors, (328), 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) [2023-12-09 15:28:07,873 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:07,873 INFO L233 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] [2023-12-09 15:28:07,873 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-09 15:28:07,874 INFO L425 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:07,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:07,876 INFO L85 PathProgramCache]: Analyzing trace with hash -823775992, now seen corresponding path program 1 times [2023-12-09 15:28:07,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:07,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851873627] [2023-12-09 15:28:07,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:07,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:08,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:08,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851873627] [2023-12-09 15:28:08,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851873627] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:08,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-09 15:28:08,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-09 15:28:08,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358325821] [2023-12-09 15:28:08,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:08,034 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-09 15:28:08,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:08,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-09 15:28:08,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-12-09 15:28:08,036 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 85 [2023-12-09 15:28:08,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 77 transitions, 241 flow. Second operand has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2023-12-09 15:28:08,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:08,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 85 [2023-12-09 15:28:08,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:08,165 INFO L124 PetriNetUnfolderBase]: 77/271 cut-off events. [2023-12-09 15:28:08,165 INFO L125 PetriNetUnfolderBase]: For 89/101 co-relation queries the response was YES. [2023-12-09 15:28:08,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 271 events. 77/271 cut-off events. For 89/101 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1047 event pairs, 21 based on Foata normal form. 2/240 useless extension candidates. Maximal degree in co-relation 492. Up to 122 conditions per place. [2023-12-09 15:28:08,169 INFO L140 encePairwiseOnDemand]: 78/85 looper letters, 41 selfloop transitions, 7 changer transitions 3/102 dead transitions. [2023-12-09 15:28:08,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 102 transitions, 448 flow [2023-12-09 15:28:08,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-09 15:28:08,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-12-09 15:28:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 414 transitions. [2023-12-09 15:28:08,173 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.8117647058823529 [2023-12-09 15:28:08,173 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 414 transitions. [2023-12-09 15:28:08,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 414 transitions. [2023-12-09 15:28:08,173 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:08,173 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 414 transitions. [2023-12-09 15:28:08,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 69.0) internal successors, (414), 6 states have internal predecessors, (414), 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) [2023-12-09 15:28:08,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-12-09 15:28:08,176 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 85.0) internal successors, (595), 7 states have internal predecessors, (595), 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) [2023-12-09 15:28:08,177 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 10 predicate places. [2023-12-09 15:28:08,177 INFO L500 AbstractCegarLoop]: Abstraction has has 85 places, 102 transitions, 448 flow [2023-12-09 15:28:08,177 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 66.0) internal successors, (330), 5 states have internal predecessors, (330), 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) [2023-12-09 15:28:08,177 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:08,178 INFO L233 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] [2023-12-09 15:28:08,178 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-09 15:28:08,178 INFO L425 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:08,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:08,179 INFO L85 PathProgramCache]: Analyzing trace with hash 437997740, now seen corresponding path program 2 times [2023-12-09 15:28:08,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:08,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845825] [2023-12-09 15:28:08,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:08,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:08,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:08,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:08,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845825] [2023-12-09 15:28:08,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845825] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:08,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237669066] [2023-12-09 15:28:08,353 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:28:08,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:08,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:08,373 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) [2023-12-09 15:28:08,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-09 15:28:08,437 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-12-09 15:28:08,437 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:08,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-12-09 15:28:08,442 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:08,620 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-12-09 15:28:08,623 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-09 15:28:08,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237669066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-09 15:28:08,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-09 15:28:08,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2023-12-09 15:28:08,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386604602] [2023-12-09 15:28:08,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-09 15:28:08,624 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-09 15:28:08,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:08,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-09 15:28:08,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-12-09 15:28:08,626 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 85 [2023-12-09 15:28:08,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 102 transitions, 448 flow. Second operand has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-12-09 15:28:08,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:08,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 85 [2023-12-09 15:28:08,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:08,762 INFO L124 PetriNetUnfolderBase]: 70/223 cut-off events. [2023-12-09 15:28:08,762 INFO L125 PetriNetUnfolderBase]: For 155/181 co-relation queries the response was YES. [2023-12-09 15:28:08,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659 conditions, 223 events. 70/223 cut-off events. For 155/181 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 739 event pairs, 21 based on Foata normal form. 2/203 useless extension candidates. Maximal degree in co-relation 510. Up to 103 conditions per place. [2023-12-09 15:28:08,766 INFO L140 encePairwiseOnDemand]: 77/85 looper letters, 29 selfloop transitions, 8 changer transitions 2/91 dead transitions. [2023-12-09 15:28:08,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 91 transitions, 454 flow [2023-12-09 15:28:08,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-09 15:28:08,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-12-09 15:28:08,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 464 transitions. [2023-12-09 15:28:08,768 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6823529411764706 [2023-12-09 15:28:08,768 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 464 transitions. [2023-12-09 15:28:08,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 464 transitions. [2023-12-09 15:28:08,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:08,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 464 transitions. [2023-12-09 15:28:08,770 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 58.0) internal successors, (464), 8 states have internal predecessors, (464), 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) [2023-12-09 15:28:08,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2023-12-09 15:28:08,771 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 85.0) internal successors, (765), 9 states have internal predecessors, (765), 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) [2023-12-09 15:28:08,772 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 15 predicate places. [2023-12-09 15:28:08,772 INFO L500 AbstractCegarLoop]: Abstraction has has 90 places, 91 transitions, 454 flow [2023-12-09 15:28:08,772 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 57.666666666666664) internal successors, (346), 6 states have internal predecessors, (346), 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) [2023-12-09 15:28:08,772 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:08,773 INFO L233 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] [2023-12-09 15:28:08,787 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-12-09 15:28:08,977 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:08,977 INFO L425 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:08,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:08,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1175762491, now seen corresponding path program 1 times [2023-12-09 15:28:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:08,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267992371] [2023-12-09 15:28:08,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:08,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:09,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267992371] [2023-12-09 15:28:09,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267992371] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:09,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159997808] [2023-12-09 15:28:09,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:09,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:09,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:09,300 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) [2023-12-09 15:28:09,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-09 15:28:09,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:09,381 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:28:09,383 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:09,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:09,567 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:09,911 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159997808] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:09,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 20 [2023-12-09 15:28:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854749689] [2023-12-09 15:28:09,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:09,912 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:09,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:09,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:09,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:09,914 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 85 [2023-12-09 15:28:09,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 91 transitions, 454 flow. Second operand has 20 states, 20 states have (on average 49.25) internal successors, (985), 20 states have internal predecessors, (985), 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) [2023-12-09 15:28:09,915 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:09,915 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 85 [2023-12-09 15:28:09,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:10,918 INFO L124 PetriNetUnfolderBase]: 323/931 cut-off events. [2023-12-09 15:28:10,918 INFO L125 PetriNetUnfolderBase]: For 980/1040 co-relation queries the response was YES. [2023-12-09 15:28:10,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 931 events. 323/931 cut-off events. For 980/1040 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5278 event pairs, 23 based on Foata normal form. 6/828 useless extension candidates. Maximal degree in co-relation 2816. Up to 545 conditions per place. [2023-12-09 15:28:10,926 INFO L140 encePairwiseOnDemand]: 69/85 looper letters, 181 selfloop transitions, 88 changer transitions 48/353 dead transitions. [2023-12-09 15:28:10,926 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 353 transitions, 2968 flow [2023-12-09 15:28:10,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-12-09 15:28:10,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-12-09 15:28:10,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2288 transitions. [2023-12-09 15:28:10,931 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.611764705882353 [2023-12-09 15:28:10,931 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2288 transitions. [2023-12-09 15:28:10,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2288 transitions. [2023-12-09 15:28:10,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:10,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2288 transitions. [2023-12-09 15:28:10,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 52.0) internal successors, (2288), 44 states have internal predecessors, (2288), 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) [2023-12-09 15:28:10,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 85.0) internal successors, (3825), 45 states have internal predecessors, (3825), 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) [2023-12-09 15:28:10,944 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 85.0) internal successors, (3825), 45 states have internal predecessors, (3825), 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) [2023-12-09 15:28:10,946 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 58 predicate places. [2023-12-09 15:28:10,946 INFO L500 AbstractCegarLoop]: Abstraction has has 133 places, 353 transitions, 2968 flow [2023-12-09 15:28:10,946 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 49.25) internal successors, (985), 20 states have internal predecessors, (985), 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) [2023-12-09 15:28:10,947 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:10,947 INFO L233 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] [2023-12-09 15:28:10,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:11,151 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,SelfDestructingSolverStorable3 [2023-12-09 15:28:11,151 INFO L425 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:11,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1440727187, now seen corresponding path program 2 times [2023-12-09 15:28:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:11,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547362753] [2023-12-09 15:28:11,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:11,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:11,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:11,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547362753] [2023-12-09 15:28:11,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547362753] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:11,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580346189] [2023-12-09 15:28:11,321 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:28:11,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:11,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:11,337 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) [2023-12-09 15:28:11,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-09 15:28:11,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:28:11,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:11,395 INFO L262 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 7 conjunts are in the unsatisfiable core [2023-12-09 15:28:11,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:11,465 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:11,465 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:11,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:11,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580346189] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:11,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:11,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 14 [2023-12-09 15:28:11,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913508157] [2023-12-09 15:28:11,599 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:11,599 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-09 15:28:11,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:11,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-09 15:28:11,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-09 15:28:11,601 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 85 [2023-12-09 15:28:11,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 353 transitions, 2968 flow. Second operand has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 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) [2023-12-09 15:28:11,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:11,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 85 [2023-12-09 15:28:11,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:11,865 INFO L124 PetriNetUnfolderBase]: 356/1025 cut-off events. [2023-12-09 15:28:11,866 INFO L125 PetriNetUnfolderBase]: For 1594/1661 co-relation queries the response was YES. [2023-12-09 15:28:11,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4541 conditions, 1025 events. 356/1025 cut-off events. For 1594/1661 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 6035 event pairs, 24 based on Foata normal form. 21/942 useless extension candidates. Maximal degree in co-relation 3955. Up to 620 conditions per place. [2023-12-09 15:28:11,873 INFO L140 encePairwiseOnDemand]: 76/85 looper letters, 254 selfloop transitions, 72 changer transitions 60/454 dead transitions. [2023-12-09 15:28:11,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 454 transitions, 4606 flow [2023-12-09 15:28:11,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-09 15:28:11,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-12-09 15:28:11,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 783 transitions. [2023-12-09 15:28:11,876 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7676470588235295 [2023-12-09 15:28:11,876 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 783 transitions. [2023-12-09 15:28:11,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 783 transitions. [2023-12-09 15:28:11,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:11,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 783 transitions. [2023-12-09 15:28:11,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.25) internal successors, (783), 12 states have internal predecessors, (783), 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) [2023-12-09 15:28:11,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2023-12-09 15:28:11,880 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 85.0) internal successors, (1105), 13 states have internal predecessors, (1105), 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) [2023-12-09 15:28:11,882 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 69 predicate places. [2023-12-09 15:28:11,882 INFO L500 AbstractCegarLoop]: Abstraction has has 144 places, 454 transitions, 4606 flow [2023-12-09 15:28:11,882 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 62.714285714285715) internal successors, (878), 14 states have internal predecessors, (878), 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) [2023-12-09 15:28:11,882 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:11,882 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:11,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:12,087 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:12,088 INFO L425 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:12,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:12,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1527020019, now seen corresponding path program 3 times [2023-12-09 15:28:12,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:12,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018065252] [2023-12-09 15:28:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:12,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:12,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:12,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:12,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018065252] [2023-12-09 15:28:12,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018065252] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:12,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552398854] [2023-12-09 15:28:12,331 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:28:12,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:12,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:12,346 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) [2023-12-09 15:28:12,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-09 15:28:12,414 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:28:12,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:12,416 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:12,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:12,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:12,645 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:12,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552398854] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:12,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:12,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 15 [2023-12-09 15:28:12,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076811310] [2023-12-09 15:28:12,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:12,645 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-12-09 15:28:12,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:12,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-12-09 15:28:12,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2023-12-09 15:28:12,647 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:12,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 454 transitions, 4606 flow. Second operand has 15 states, 15 states have (on average 64.46666666666667) internal successors, (967), 15 states have internal predecessors, (967), 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) [2023-12-09 15:28:12,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:12,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:12,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:13,136 INFO L124 PetriNetUnfolderBase]: 554/1460 cut-off events. [2023-12-09 15:28:13,137 INFO L125 PetriNetUnfolderBase]: For 3598/3705 co-relation queries the response was YES. [2023-12-09 15:28:13,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7656 conditions, 1460 events. 554/1460 cut-off events. For 3598/3705 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 9072 event pairs, 11 based on Foata normal form. 29/1360 useless extension candidates. Maximal degree in co-relation 6931. Up to 943 conditions per place. [2023-12-09 15:28:13,147 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 232 selfloop transitions, 333 changer transitions 94/761 dead transitions. [2023-12-09 15:28:13,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 761 transitions, 9429 flow [2023-12-09 15:28:13,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-12-09 15:28:13,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-12-09 15:28:13,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1677 transitions. [2023-12-09 15:28:13,150 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7891764705882353 [2023-12-09 15:28:13,150 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1677 transitions. [2023-12-09 15:28:13,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1677 transitions. [2023-12-09 15:28:13,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:13,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1677 transitions. [2023-12-09 15:28:13,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 67.08) internal successors, (1677), 25 states have internal predecessors, (1677), 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) [2023-12-09 15:28:13,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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) [2023-12-09 15:28:13,156 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 85.0) internal successors, (2210), 26 states have internal predecessors, (2210), 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) [2023-12-09 15:28:13,156 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 93 predicate places. [2023-12-09 15:28:13,157 INFO L500 AbstractCegarLoop]: Abstraction has has 168 places, 761 transitions, 9429 flow [2023-12-09 15:28:13,157 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 64.46666666666667) internal successors, (967), 15 states have internal predecessors, (967), 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) [2023-12-09 15:28:13,157 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:13,157 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:13,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-09 15:28:13,361 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:13,362 INFO L425 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:13,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:13,362 INFO L85 PathProgramCache]: Analyzing trace with hash -2033991253, now seen corresponding path program 4 times [2023-12-09 15:28:13,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:13,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977255829] [2023-12-09 15:28:13,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:13,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:13,613 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:13,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977255829] [2023-12-09 15:28:13,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977255829] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:13,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344133750] [2023-12-09 15:28:13,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:28:13,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:13,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:13,615 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) [2023-12-09 15:28:13,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-09 15:28:13,686 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:28:13,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:13,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:28:13,692 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:13,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:13,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:13,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344133750] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:13,983 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:13,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2023-12-09 15:28:13,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730512221] [2023-12-09 15:28:13,983 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:13,986 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:28:13,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:13,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:28:13,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:28:13,988 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2023-12-09 15:28:13,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 761 transitions, 9429 flow. Second operand has 22 states, 22 states have (on average 50.22727272727273) internal successors, (1105), 22 states have internal predecessors, (1105), 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) [2023-12-09 15:28:13,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:13,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2023-12-09 15:28:13,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:15,815 INFO L124 PetriNetUnfolderBase]: 864/2229 cut-off events. [2023-12-09 15:28:15,815 INFO L125 PetriNetUnfolderBase]: For 6689/6773 co-relation queries the response was YES. [2023-12-09 15:28:15,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13542 conditions, 2229 events. 864/2229 cut-off events. For 6689/6773 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15580 event pairs, 2 based on Foata normal form. 23/2088 useless extension candidates. Maximal degree in co-relation 11336. Up to 1472 conditions per place. [2023-12-09 15:28:15,834 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 484 selfloop transitions, 839 changer transitions 124/1484 dead transitions. [2023-12-09 15:28:15,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 1484 transitions, 21934 flow [2023-12-09 15:28:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-12-09 15:28:15,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-12-09 15:28:15,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3087 transitions. [2023-12-09 15:28:15,841 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6052941176470589 [2023-12-09 15:28:15,841 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3087 transitions. [2023-12-09 15:28:15,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3087 transitions. [2023-12-09 15:28:15,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:15,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3087 transitions. [2023-12-09 15:28:15,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 51.45) internal successors, (3087), 60 states have internal predecessors, (3087), 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) [2023-12-09 15:28:15,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 85.0) internal successors, (5185), 61 states have internal predecessors, (5185), 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) [2023-12-09 15:28:15,860 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 85.0) internal successors, (5185), 61 states have internal predecessors, (5185), 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) [2023-12-09 15:28:15,861 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 152 predicate places. [2023-12-09 15:28:15,861 INFO L500 AbstractCegarLoop]: Abstraction has has 227 places, 1484 transitions, 21934 flow [2023-12-09 15:28:15,862 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.22727272727273) internal successors, (1105), 22 states have internal predecessors, (1105), 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) [2023-12-09 15:28:15,862 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:15,862 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:15,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:16,066 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:16,067 INFO L425 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:16,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:16,067 INFO L85 PathProgramCache]: Analyzing trace with hash -894087401, now seen corresponding path program 5 times [2023-12-09 15:28:16,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:16,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350766701] [2023-12-09 15:28:16,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:16,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:16,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:16,270 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:16,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:16,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350766701] [2023-12-09 15:28:16,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350766701] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:16,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1711750186] [2023-12-09 15:28:16,272 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:28:16,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:16,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:16,274 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) [2023-12-09 15:28:16,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-09 15:28:16,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:28:16,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:16,329 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2023-12-09 15:28:16,330 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:16,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:16,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:16,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1711750186] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:16,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:16,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 20 [2023-12-09 15:28:16,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928716514] [2023-12-09 15:28:16,683 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:16,683 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:16,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:16,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:16,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:16,685 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:16,686 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1484 transitions, 21934 flow. Second operand has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:16,686 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:16,686 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:16,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:18,537 INFO L124 PetriNetUnfolderBase]: 1077/2720 cut-off events. [2023-12-09 15:28:18,538 INFO L125 PetriNetUnfolderBase]: For 10243/10645 co-relation queries the response was YES. [2023-12-09 15:28:18,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18771 conditions, 2720 events. 1077/2720 cut-off events. For 10243/10645 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 19883 event pairs, 2 based on Foata normal form. 89/2605 useless extension candidates. Maximal degree in co-relation 17976. Up to 1821 conditions per place. [2023-12-09 15:28:18,560 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 394 selfloop transitions, 1133 changer transitions 192/1849 dead transitions. [2023-12-09 15:28:18,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 1849 transitions, 30882 flow [2023-12-09 15:28:18,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-09 15:28:18,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-12-09 15:28:18,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 3291 transitions. [2023-12-09 15:28:18,563 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7743529411764706 [2023-12-09 15:28:18,564 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 3291 transitions. [2023-12-09 15:28:18,564 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 3291 transitions. [2023-12-09 15:28:18,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:18,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 3291 transitions. [2023-12-09 15:28:18,568 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 65.82) internal successors, (3291), 50 states have internal predecessors, (3291), 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) [2023-12-09 15:28:18,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 85.0) internal successors, (4335), 51 states have internal predecessors, (4335), 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) [2023-12-09 15:28:18,573 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 85.0) internal successors, (4335), 51 states have internal predecessors, (4335), 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) [2023-12-09 15:28:18,573 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 201 predicate places. [2023-12-09 15:28:18,573 INFO L500 AbstractCegarLoop]: Abstraction has has 276 places, 1849 transitions, 30882 flow [2023-12-09 15:28:18,574 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:18,574 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:18,574 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:18,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-12-09 15:28:18,777 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:18,778 INFO L425 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:18,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:18,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1927529609, now seen corresponding path program 6 times [2023-12-09 15:28:18,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:18,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616540309] [2023-12-09 15:28:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:18,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:19,030 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:19,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616540309] [2023-12-09 15:28:19,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616540309] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:19,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864254499] [2023-12-09 15:28:19,031 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:28:19,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:19,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:19,032 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:19,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-12-09 15:28:19,107 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-12-09 15:28:19,107 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:19,108 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:19,109 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:19,224 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:19,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:19,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:19,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [864254499] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:19,387 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:19,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 19 [2023-12-09 15:28:19,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436361418] [2023-12-09 15:28:19,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:19,389 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:28:19,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:19,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:28:19,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:28:19,390 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:19,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 1849 transitions, 30882 flow. Second operand has 19 states, 19 states have (on average 64.36842105263158) internal successors, (1223), 19 states have internal predecessors, (1223), 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) [2023-12-09 15:28:19,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:19,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:19,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:22,713 INFO L124 PetriNetUnfolderBase]: 1596/4106 cut-off events. [2023-12-09 15:28:22,713 INFO L125 PetriNetUnfolderBase]: For 17888/18525 co-relation queries the response was YES. [2023-12-09 15:28:22,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31068 conditions, 4106 events. 1596/4106 cut-off events. For 17888/18525 co-relation queries the response was YES. Maximal size of possible extension queue 232. Compared 33713 event pairs, 3 based on Foata normal form. 172/3943 useless extension candidates. Maximal degree in co-relation 26179. Up to 2813 conditions per place. [2023-12-09 15:28:22,793 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 648 selfloop transitions, 1657 changer transitions 283/2718 dead transitions. [2023-12-09 15:28:22,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 2718 transitions, 51045 flow [2023-12-09 15:28:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2023-12-09 15:28:22,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2023-12-09 15:28:22,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 5920 transitions. [2023-12-09 15:28:22,814 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7738562091503268 [2023-12-09 15:28:22,814 INFO L72 ComplementDD]: Start complementDD. Operand 90 states and 5920 transitions. [2023-12-09 15:28:22,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 90 states and 5920 transitions. [2023-12-09 15:28:22,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:22,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 90 states and 5920 transitions. [2023-12-09 15:28:22,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 91 states, 90 states have (on average 65.77777777777777) internal successors, (5920), 90 states have internal predecessors, (5920), 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) [2023-12-09 15:28:22,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 91 states, 91 states have (on average 85.0) internal successors, (7735), 91 states have internal predecessors, (7735), 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) [2023-12-09 15:28:22,845 INFO L81 ComplementDD]: Finished complementDD. Result has 91 states, 91 states have (on average 85.0) internal successors, (7735), 91 states have internal predecessors, (7735), 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) [2023-12-09 15:28:22,860 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 289 predicate places. [2023-12-09 15:28:22,860 INFO L500 AbstractCegarLoop]: Abstraction has has 364 places, 2718 transitions, 51045 flow [2023-12-09 15:28:22,861 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.36842105263158) internal successors, (1223), 19 states have internal predecessors, (1223), 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) [2023-12-09 15:28:22,861 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:22,861 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:22,868 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-12-09 15:28:23,066 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:23,066 INFO L425 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:23,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:23,067 INFO L85 PathProgramCache]: Analyzing trace with hash 376291159, now seen corresponding path program 7 times [2023-12-09 15:28:23,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:23,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628610154] [2023-12-09 15:28:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:23,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:23,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:23,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628610154] [2023-12-09 15:28:23,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628610154] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:23,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942337600] [2023-12-09 15:28:23,253 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:28:23,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:23,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:23,254 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:23,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-12-09 15:28:23,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:23,315 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:23,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:23,434 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:23,434 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:23,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:23,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942337600] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:23,601 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:23,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2023-12-09 15:28:23,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168233727] [2023-12-09 15:28:23,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:23,601 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:28:23,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:23,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:28:23,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:28:23,603 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:23,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 2718 transitions, 51045 flow. Second operand has 19 states, 19 states have (on average 64.15789473684211) internal successors, (1219), 19 states have internal predecessors, (1219), 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) [2023-12-09 15:28:23,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:23,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:23,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:25,822 INFO L124 PetriNetUnfolderBase]: 1981/5027 cut-off events. [2023-12-09 15:28:25,822 INFO L125 PetriNetUnfolderBase]: For 26106/26804 co-relation queries the response was YES. [2023-12-09 15:28:25,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41974 conditions, 5027 events. 1981/5027 cut-off events. For 26106/26804 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 42774 event pairs, 2 based on Foata normal form. 193/4833 useless extension candidates. Maximal degree in co-relation 35686. Up to 3462 conditions per place. [2023-12-09 15:28:25,874 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 868 selfloop transitions, 2032 changer transitions 348/3378 dead transitions. [2023-12-09 15:28:25,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 3378 transitions, 70146 flow [2023-12-09 15:28:25,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-12-09 15:28:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-12-09 15:28:25,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2112 transitions. [2023-12-09 15:28:25,876 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7764705882352941 [2023-12-09 15:28:25,876 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2112 transitions. [2023-12-09 15:28:25,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2112 transitions. [2023-12-09 15:28:25,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:25,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2112 transitions. [2023-12-09 15:28:25,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 66.0) internal successors, (2112), 32 states have internal predecessors, (2112), 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) [2023-12-09 15:28:25,881 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 85.0) internal successors, (2805), 33 states have internal predecessors, (2805), 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) [2023-12-09 15:28:25,881 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 85.0) internal successors, (2805), 33 states have internal predecessors, (2805), 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) [2023-12-09 15:28:25,881 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 320 predicate places. [2023-12-09 15:28:25,882 INFO L500 AbstractCegarLoop]: Abstraction has has 395 places, 3378 transitions, 70146 flow [2023-12-09 15:28:25,882 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 64.15789473684211) internal successors, (1219), 19 states have internal predecessors, (1219), 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) [2023-12-09 15:28:25,882 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:25,882 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:25,903 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-12-09 15:28:26,086 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-12-09 15:28:26,086 INFO L425 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:26,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:26,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1651326811, now seen corresponding path program 8 times [2023-12-09 15:28:26,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:26,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790201405] [2023-12-09 15:28:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:26,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:26,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:26,386 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:26,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:26,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790201405] [2023-12-09 15:28:26,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790201405] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:26,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523300593] [2023-12-09 15:28:26,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:28:26,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:26,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:26,388 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:26,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-12-09 15:28:26,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:28:26,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:26,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:26,448 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:26,555 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:26,742 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:26,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523300593] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:26,742 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:26,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-12-09 15:28:26,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498749999] [2023-12-09 15:28:26,743 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:26,744 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 15:28:26,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:26,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 15:28:26,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:28:26,745 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:26,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 3378 transitions, 70146 flow. Second operand has 17 states, 17 states have (on average 64.17647058823529) internal successors, (1091), 17 states have internal predecessors, (1091), 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) [2023-12-09 15:28:26,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:26,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:26,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:31,389 INFO L124 PetriNetUnfolderBase]: 2381/5872 cut-off events. [2023-12-09 15:28:31,389 INFO L125 PetriNetUnfolderBase]: For 36266/37200 co-relation queries the response was YES. [2023-12-09 15:28:31,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54157 conditions, 5872 events. 2381/5872 cut-off events. For 36266/37200 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 50761 event pairs, 3 based on Foata normal form. 286/5666 useless extension candidates. Maximal degree in co-relation 52892. Up to 4121 conditions per place. [2023-12-09 15:28:31,463 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 774 selfloop transitions, 2709 changer transitions 434/4047 dead transitions. [2023-12-09 15:28:31,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 4047 transitions, 92080 flow [2023-12-09 15:28:31,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-12-09 15:28:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-12-09 15:28:31,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 5298 transitions. [2023-12-09 15:28:31,472 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7694989106753812 [2023-12-09 15:28:31,472 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 5298 transitions. [2023-12-09 15:28:31,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 5298 transitions. [2023-12-09 15:28:31,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:31,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 5298 transitions. [2023-12-09 15:28:31,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 65.4074074074074) internal successors, (5298), 81 states have internal predecessors, (5298), 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) [2023-12-09 15:28:31,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 85.0) internal successors, (6970), 82 states have internal predecessors, (6970), 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) [2023-12-09 15:28:31,491 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 85.0) internal successors, (6970), 82 states have internal predecessors, (6970), 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) [2023-12-09 15:28:31,491 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 400 predicate places. [2023-12-09 15:28:31,491 INFO L500 AbstractCegarLoop]: Abstraction has has 475 places, 4047 transitions, 92080 flow [2023-12-09 15:28:31,491 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 64.17647058823529) internal successors, (1091), 17 states have internal predecessors, (1091), 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) [2023-12-09 15:28:31,492 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:31,492 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:31,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:31,697 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:31,697 INFO L425 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:31,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash 1965496171, now seen corresponding path program 9 times [2023-12-09 15:28:31,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:31,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302734436] [2023-12-09 15:28:31,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:31,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:31,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:31,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302734436] [2023-12-09 15:28:31,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302734436] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:31,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930750274] [2023-12-09 15:28:31,868 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:28:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:31,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:31,869 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:31,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-12-09 15:28:31,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-12-09 15:28:31,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:31,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:31,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:32,050 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:32,050 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:32,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:32,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930750274] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:32,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:32,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2023-12-09 15:28:32,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116397651] [2023-12-09 15:28:32,213 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:32,215 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:32,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:32,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:32,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:32,217 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:32,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 4047 transitions, 92080 flow. Second operand has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:32,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:32,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:32,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:37,076 INFO L124 PetriNetUnfolderBase]: 2933/7522 cut-off events. [2023-12-09 15:28:37,076 INFO L125 PetriNetUnfolderBase]: For 52402/53525 co-relation queries the response was YES. [2023-12-09 15:28:37,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73645 conditions, 7522 events. 2933/7522 cut-off events. For 52402/53525 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69456 event pairs, 5 based on Foata normal form. 238/7077 useless extension candidates. Maximal degree in co-relation 71502. Up to 5282 conditions per place. [2023-12-09 15:28:37,143 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 1372 selfloop transitions, 2967 changer transitions 506/4975 dead transitions. [2023-12-09 15:28:37,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 4975 transitions, 123431 flow [2023-12-09 15:28:37,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-12-09 15:28:37,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-12-09 15:28:37,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3441 transitions. [2023-12-09 15:28:37,146 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7785067873303168 [2023-12-09 15:28:37,146 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3441 transitions. [2023-12-09 15:28:37,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3441 transitions. [2023-12-09 15:28:37,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:37,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3441 transitions. [2023-12-09 15:28:37,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 66.17307692307692) internal successors, (3441), 52 states have internal predecessors, (3441), 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) [2023-12-09 15:28:37,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 85.0) internal successors, (4505), 53 states have internal predecessors, (4505), 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) [2023-12-09 15:28:37,153 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 85.0) internal successors, (4505), 53 states have internal predecessors, (4505), 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) [2023-12-09 15:28:37,153 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 446 predicate places. [2023-12-09 15:28:37,153 INFO L500 AbstractCegarLoop]: Abstraction has has 521 places, 4975 transitions, 123431 flow [2023-12-09 15:28:37,154 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:37,154 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:37,154 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:37,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:37,359 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-09 15:28:37,359 INFO L425 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:37,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:37,359 INFO L85 PathProgramCache]: Analyzing trace with hash -118594045, now seen corresponding path program 10 times [2023-12-09 15:28:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174148346] [2023-12-09 15:28:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:37,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:37,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174148346] [2023-12-09 15:28:37,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174148346] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1671797301] [2023-12-09 15:28:37,513 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:28:37,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:37,514 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:37,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-12-09 15:28:37,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:28:37,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:37,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:28:37,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:37,641 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:37,641 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:37,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1671797301] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:37,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:37,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 20 [2023-12-09 15:28:37,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15659606] [2023-12-09 15:28:37,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:37,802 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:37,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:37,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:37,804 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2023-12-09 15:28:37,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 521 places, 4975 transitions, 123431 flow. Second operand has 20 states, 20 states have (on average 50.3) internal successors, (1006), 20 states have internal predecessors, (1006), 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) [2023-12-09 15:28:37,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:37,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2023-12-09 15:28:37,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:45,556 INFO L124 PetriNetUnfolderBase]: 3392/8618 cut-off events. [2023-12-09 15:28:45,556 INFO L125 PetriNetUnfolderBase]: For 67364/68814 co-relation queries the response was YES. [2023-12-09 15:28:45,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91881 conditions, 8618 events. 3392/8618 cut-off events. For 67364/68814 co-relation queries the response was YES. Maximal size of possible extension queue 481. Compared 81408 event pairs, 5 based on Foata normal form. 337/8211 useless extension candidates. Maximal degree in co-relation 79379. Up to 6098 conditions per place. [2023-12-09 15:28:45,644 INFO L140 encePairwiseOnDemand]: 70/85 looper letters, 1946 selfloop transitions, 3286 changer transitions 513/5782 dead transitions. [2023-12-09 15:28:45,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 583 places, 5782 transitions, 154793 flow [2023-12-09 15:28:45,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-12-09 15:28:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-12-09 15:28:45,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 3208 transitions. [2023-12-09 15:28:45,648 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5990662931839402 [2023-12-09 15:28:45,648 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 3208 transitions. [2023-12-09 15:28:45,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 3208 transitions. [2023-12-09 15:28:45,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:45,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 3208 transitions. [2023-12-09 15:28:45,653 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 50.92063492063492) internal successors, (3208), 63 states have internal predecessors, (3208), 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) [2023-12-09 15:28:45,657 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 85.0) internal successors, (5440), 64 states have internal predecessors, (5440), 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) [2023-12-09 15:28:45,658 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 85.0) internal successors, (5440), 64 states have internal predecessors, (5440), 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) [2023-12-09 15:28:45,658 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 508 predicate places. [2023-12-09 15:28:45,658 INFO L500 AbstractCegarLoop]: Abstraction has has 583 places, 5782 transitions, 154793 flow [2023-12-09 15:28:45,659 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 50.3) internal successors, (1006), 20 states have internal predecessors, (1006), 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) [2023-12-09 15:28:45,659 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:45,659 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:45,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:45,863 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-09 15:28:45,863 INFO L425 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:45,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:45,864 INFO L85 PathProgramCache]: Analyzing trace with hash -2042661175, now seen corresponding path program 11 times [2023-12-09 15:28:45,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:45,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436306198] [2023-12-09 15:28:45,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:45,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:45,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:46,039 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:46,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436306198] [2023-12-09 15:28:46,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436306198] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:46,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360524329] [2023-12-09 15:28:46,040 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:28:46,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:46,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:46,041 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:46,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-12-09 15:28:46,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-12-09 15:28:46,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:46,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 11 conjunts are in the unsatisfiable core [2023-12-09 15:28:46,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:46,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:46,485 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360524329] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:46,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 20 [2023-12-09 15:28:46,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204857732] [2023-12-09 15:28:46,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:46,486 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:46,487 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:46,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 583 places, 5782 transitions, 154793 flow. Second operand has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:46,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:46,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:46,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:28:57,575 INFO L124 PetriNetUnfolderBase]: 4473/11359 cut-off events. [2023-12-09 15:28:57,575 INFO L125 PetriNetUnfolderBase]: For 90200/92100 co-relation queries the response was YES. [2023-12-09 15:28:57,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129482 conditions, 11359 events. 4473/11359 cut-off events. For 90200/92100 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 112593 event pairs, 2 based on Foata normal form. 379/10635 useless extension candidates. Maximal degree in co-relation 114758. Up to 8064 conditions per place. [2023-12-09 15:28:57,687 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 1052 selfloop transitions, 5863 changer transitions 746/7818 dead transitions. [2023-12-09 15:28:57,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 646 places, 7818 transitions, 225052 flow [2023-12-09 15:28:57,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-12-09 15:28:57,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-12-09 15:28:57,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4196 transitions. [2023-12-09 15:28:57,703 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7713235294117647 [2023-12-09 15:28:57,703 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4196 transitions. [2023-12-09 15:28:57,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4196 transitions. [2023-12-09 15:28:57,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:28:57,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4196 transitions. [2023-12-09 15:28:57,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 65.5625) internal successors, (4196), 64 states have internal predecessors, (4196), 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) [2023-12-09 15:28:57,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 85.0) internal successors, (5525), 65 states have internal predecessors, (5525), 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) [2023-12-09 15:28:57,725 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 85.0) internal successors, (5525), 65 states have internal predecessors, (5525), 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) [2023-12-09 15:28:57,726 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 571 predicate places. [2023-12-09 15:28:57,726 INFO L500 AbstractCegarLoop]: Abstraction has has 646 places, 7818 transitions, 225052 flow [2023-12-09 15:28:57,726 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:57,727 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:28:57,727 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:28:57,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-12-09 15:28:57,930 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-12-09 15:28:57,931 INFO L425 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:28:57,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:28:57,931 INFO L85 PathProgramCache]: Analyzing trace with hash -194576617, now seen corresponding path program 12 times [2023-12-09 15:28:57,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:28:57,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932131339] [2023-12-09 15:28:57,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:28:57,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:28:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:28:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:58,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:28:58,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932131339] [2023-12-09 15:28:58,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932131339] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:28:58,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [472378576] [2023-12-09 15:28:58,083 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-12-09 15:28:58,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:28:58,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:28:58,084 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:28:58,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-12-09 15:28:58,157 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-12-09 15:28:58,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:28:58,158 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:28:58,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:28:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:58,275 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:28:58,447 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:28:58,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [472378576] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:28:58,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:28:58,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 20 [2023-12-09 15:28:58,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516361923] [2023-12-09 15:28:58,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:28:58,448 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-09 15:28:58,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:28:58,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-09 15:28:58,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2023-12-09 15:28:58,450 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:28:58,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 7818 transitions, 225052 flow. Second operand has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:28:58,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:28:58,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:28:58,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:13,386 INFO L124 PetriNetUnfolderBase]: 4889/12168 cut-off events. [2023-12-09 15:29:13,387 INFO L125 PetriNetUnfolderBase]: For 110167/112057 co-relation queries the response was YES. [2023-12-09 15:29:13,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149174 conditions, 12168 events. 4889/12168 cut-off events. For 110167/112057 co-relation queries the response was YES. Maximal size of possible extension queue 664. Compared 120543 event pairs, 3 based on Foata normal form. 359/11359 useless extension candidates. Maximal degree in co-relation 145728. Up to 8706 conditions per place. [2023-12-09 15:29:13,528 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 2630 selfloop transitions, 4927 changer transitions 793/8507 dead transitions. [2023-12-09 15:29:13,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 664 places, 8507 transitions, 261606 flow [2023-12-09 15:29:13,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-09 15:29:13,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-12-09 15:29:13,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1261 transitions. [2023-12-09 15:29:13,530 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7808049535603715 [2023-12-09 15:29:13,530 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1261 transitions. [2023-12-09 15:29:13,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1261 transitions. [2023-12-09 15:29:13,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:13,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1261 transitions. [2023-12-09 15:29:13,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 66.36842105263158) internal successors, (1261), 19 states have internal predecessors, (1261), 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) [2023-12-09 15:29:13,533 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 85.0) internal successors, (1700), 20 states have internal predecessors, (1700), 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) [2023-12-09 15:29:13,533 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 85.0) internal successors, (1700), 20 states have internal predecessors, (1700), 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) [2023-12-09 15:29:13,533 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 589 predicate places. [2023-12-09 15:29:13,533 INFO L500 AbstractCegarLoop]: Abstraction has has 664 places, 8507 transitions, 261606 flow [2023-12-09 15:29:13,534 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 64.05) internal successors, (1281), 20 states have internal predecessors, (1281), 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) [2023-12-09 15:29:13,534 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:13,534 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:29:13,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-12-09 15:29:13,738 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-12-09 15:29:13,739 INFO L425 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:29:13,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:13,739 INFO L85 PathProgramCache]: Analyzing trace with hash 464230595, now seen corresponding path program 13 times [2023-12-09 15:29:13,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:13,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895600137] [2023-12-09 15:29:13,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:13,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:13,902 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:13,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895600137] [2023-12-09 15:29:13,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895600137] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:13,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136427489] [2023-12-09 15:29:13,902 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-12-09 15:29:13,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:13,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:13,903 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:29:13,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-12-09 15:29:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:13,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 16 conjunts are in the unsatisfiable core [2023-12-09 15:29:13,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:14,112 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:14,309 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:14,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136427489] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:14,309 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:14,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 11] total 22 [2023-12-09 15:29:14,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903704375] [2023-12-09 15:29:14,310 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:14,310 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-12-09 15:29:14,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:14,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-12-09 15:29:14,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2023-12-09 15:29:14,311 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 85 [2023-12-09 15:29:14,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 8507 transitions, 261606 flow. Second operand has 22 states, 22 states have (on average 50.22727272727273) internal successors, (1105), 22 states have internal predecessors, (1105), 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) [2023-12-09 15:29:14,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:14,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 85 [2023-12-09 15:29:14,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:29:37,856 INFO L124 PetriNetUnfolderBase]: 6202/15231 cut-off events. [2023-12-09 15:29:37,857 INFO L125 PetriNetUnfolderBase]: For 148599/151199 co-relation queries the response was YES. [2023-12-09 15:29:37,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200909 conditions, 15231 events. 6202/15231 cut-off events. For 148599/151199 co-relation queries the response was YES. Maximal size of possible extension queue 839. Compared 155199 event pairs, 2 based on Foata normal form. 448/14219 useless extension candidates. Maximal degree in co-relation 179964. Up to 10995 conditions per place. [2023-12-09 15:29:38,044 INFO L140 encePairwiseOnDemand]: 67/85 looper letters, 3994 selfloop transitions, 5797 changer transitions 1006/10834 dead transitions. [2023-12-09 15:29:38,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 738 places, 10834 transitions, 353421 flow [2023-12-09 15:29:38,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-12-09 15:29:38,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-12-09 15:29:38,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 3939 transitions. [2023-12-09 15:29:38,047 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6097523219814242 [2023-12-09 15:29:38,047 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 3939 transitions. [2023-12-09 15:29:38,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 3939 transitions. [2023-12-09 15:29:38,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:29:38,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 3939 transitions. [2023-12-09 15:29:38,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 51.828947368421055) internal successors, (3939), 76 states have internal predecessors, (3939), 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) [2023-12-09 15:29:38,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 85.0) internal successors, (6545), 77 states have internal predecessors, (6545), 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) [2023-12-09 15:29:38,057 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 85.0) internal successors, (6545), 77 states have internal predecessors, (6545), 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) [2023-12-09 15:29:38,057 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 663 predicate places. [2023-12-09 15:29:38,057 INFO L500 AbstractCegarLoop]: Abstraction has has 738 places, 10834 transitions, 353421 flow [2023-12-09 15:29:38,058 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 50.22727272727273) internal successors, (1105), 22 states have internal predecessors, (1105), 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) [2023-12-09 15:29:38,058 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:29:38,058 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:29:38,077 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-12-09 15:29:38,263 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:38,263 INFO L425 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:29:38,263 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:29:38,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1860243569, now seen corresponding path program 14 times [2023-12-09 15:29:38,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:29:38,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233684308] [2023-12-09 15:29:38,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:29:38,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:29:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:29:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:38,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:29:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233684308] [2023-12-09 15:29:38,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233684308] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:29:38,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1989562607] [2023-12-09 15:29:38,423 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-12-09 15:29:38,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:29:38,423 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:29:38,424 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:29:38,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-12-09 15:29:38,522 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:29:38,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:29:38,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:29:38,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:29:38,653 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:38,653 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:29:38,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:29:38,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1989562607] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:29:38,851 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:29:38,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2023-12-09 15:29:38,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889532326] [2023-12-09 15:29:38,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:29:38,851 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-09 15:29:38,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:29:38,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-09 15:29:38,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2023-12-09 15:29:38,852 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:29:38,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 10834 transitions, 353421 flow. Second operand has 17 states, 17 states have (on average 64.11764705882354) internal successors, (1090), 17 states have internal predecessors, (1090), 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) [2023-12-09 15:29:38,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:29:38,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:29:38,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:30:14,579 INFO L124 PetriNetUnfolderBase]: 6379/15571 cut-off events. [2023-12-09 15:30:14,579 INFO L125 PetriNetUnfolderBase]: For 167852/170555 co-relation queries the response was YES. [2023-12-09 15:30:14,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217739 conditions, 15571 events. 6379/15571 cut-off events. For 167852/170555 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 158444 event pairs, 1 based on Foata normal form. 469/14523 useless extension candidates. Maximal degree in co-relation 198922. Up to 11249 conditions per place. [2023-12-09 15:30:14,781 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 3356 selfloop transitions, 6352 changer transitions 1194/11156 dead transitions. [2023-12-09 15:30:14,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 774 places, 11156 transitions, 385645 flow [2023-12-09 15:30:14,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-12-09 15:30:14,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-12-09 15:30:14,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2439 transitions. [2023-12-09 15:30:14,783 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7755166931637519 [2023-12-09 15:30:14,784 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2439 transitions. [2023-12-09 15:30:14,784 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2439 transitions. [2023-12-09 15:30:14,784 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:30:14,784 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2439 transitions. [2023-12-09 15:30:14,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 65.91891891891892) internal successors, (2439), 37 states have internal predecessors, (2439), 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) [2023-12-09 15:30:14,787 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 85.0) internal successors, (3230), 38 states have internal predecessors, (3230), 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) [2023-12-09 15:30:14,788 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 85.0) internal successors, (3230), 38 states have internal predecessors, (3230), 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) [2023-12-09 15:30:14,789 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 699 predicate places. [2023-12-09 15:30:14,789 INFO L500 AbstractCegarLoop]: Abstraction has has 774 places, 11156 transitions, 385645 flow [2023-12-09 15:30:14,789 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 64.11764705882354) internal successors, (1090), 17 states have internal predecessors, (1090), 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) [2023-12-09 15:30:14,789 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:30:14,789 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:30:14,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-12-09 15:30:14,994 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-12-09 15:30:14,994 INFO L425 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:30:14,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:30:14,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1907866823, now seen corresponding path program 15 times [2023-12-09 15:30:14,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:30:14,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103697815] [2023-12-09 15:30:14,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:30:14,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:30:15,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:15,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:15,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:30:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103697815] [2023-12-09 15:30:15,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103697815] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:30:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229984442] [2023-12-09 15:30:15,165 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-12-09 15:30:15,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:15,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:30:15,182 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:30:15,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-12-09 15:30:15,262 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-12-09 15:30:15,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:30:15,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:30:15,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:30:15,372 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:15,372 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:30:15,530 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:15,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229984442] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:30:15,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:30:15,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-12-09 15:30:15,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003093302] [2023-12-09 15:30:15,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:30:15,531 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:30:15,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:30:15,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:30:15,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:30:15,533 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:30:15,534 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 774 places, 11156 transitions, 385645 flow. Second operand has 18 states, 18 states have (on average 64.05555555555556) internal successors, (1153), 18 states have internal predecessors, (1153), 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) [2023-12-09 15:30:15,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:30:15,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:30:15,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:30:51,615 INFO L124 PetriNetUnfolderBase]: 6582/16095 cut-off events. [2023-12-09 15:30:51,615 INFO L125 PetriNetUnfolderBase]: For 191561/194470 co-relation queries the response was YES. [2023-12-09 15:30:51,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236652 conditions, 16095 events. 6582/16095 cut-off events. For 191561/194470 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 164753 event pairs, 3 based on Foata normal form. 482/15006 useless extension candidates. Maximal degree in co-relation 213991. Up to 11543 conditions per place. [2023-12-09 15:30:51,821 INFO L140 encePairwiseOnDemand]: 72/85 looper letters, 2770 selfloop transitions, 7194 changer transitions 1323/11541 dead transitions. [2023-12-09 15:30:51,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 818 places, 11541 transitions, 421175 flow [2023-12-09 15:30:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-12-09 15:30:51,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-12-09 15:30:51,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2963 transitions. [2023-12-09 15:30:51,823 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.774640522875817 [2023-12-09 15:30:51,823 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2963 transitions. [2023-12-09 15:30:51,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2963 transitions. [2023-12-09 15:30:51,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:30:51,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2963 transitions. [2023-12-09 15:30:51,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 65.84444444444445) internal successors, (2963), 45 states have internal predecessors, (2963), 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) [2023-12-09 15:30:51,827 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 85.0) internal successors, (3910), 46 states have internal predecessors, (3910), 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) [2023-12-09 15:30:51,827 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 85.0) internal successors, (3910), 46 states have internal predecessors, (3910), 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) [2023-12-09 15:30:51,828 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 743 predicate places. [2023-12-09 15:30:51,828 INFO L500 AbstractCegarLoop]: Abstraction has has 818 places, 11541 transitions, 421175 flow [2023-12-09 15:30:51,828 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.05555555555556) internal successors, (1153), 18 states have internal predecessors, (1153), 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) [2023-12-09 15:30:51,828 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:30:51,828 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:30:51,833 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-12-09 15:30:52,032 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-12-09 15:30:52,033 INFO L425 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:30:52,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:30:52,033 INFO L85 PathProgramCache]: Analyzing trace with hash -775662063, now seen corresponding path program 16 times [2023-12-09 15:30:52,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:30:52,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390650174] [2023-12-09 15:30:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:30:52,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:30:52,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:30:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:52,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:30:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390650174] [2023-12-09 15:30:52,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390650174] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:30:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441698393] [2023-12-09 15:30:52,194 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-12-09 15:30:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:30:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:30:52,195 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:30:52,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-12-09 15:30:52,269 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-12-09 15:30:52,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:30:52,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:30:52,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:30:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:52,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:30:52,562 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:30:52,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441698393] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:30:52,562 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:30:52,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 18 [2023-12-09 15:30:52,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619515018] [2023-12-09 15:30:52,562 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:30:52,563 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-12-09 15:30:52,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:30:52,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-12-09 15:30:52,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2023-12-09 15:30:52,564 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:30:52,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 818 places, 11541 transitions, 421175 flow. Second operand has 18 states, 18 states have (on average 64.27777777777777) internal successors, (1157), 18 states have internal predecessors, (1157), 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) [2023-12-09 15:30:52,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:30:52,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:30:52,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-12-09 15:31:36,195 INFO L124 PetriNetUnfolderBase]: 6811/16851 cut-off events. [2023-12-09 15:31:36,196 INFO L125 PetriNetUnfolderBase]: For 230049/233514 co-relation queries the response was YES. [2023-12-09 15:31:36,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259651 conditions, 16851 events. 6811/16851 cut-off events. For 230049/233514 co-relation queries the response was YES. Maximal size of possible extension queue 904. Compared 175186 event pairs, 2 based on Foata normal form. 480/15690 useless extension candidates. Maximal degree in co-relation 237664. Up to 12096 conditions per place. [2023-12-09 15:31:36,433 INFO L140 encePairwiseOnDemand]: 71/85 looper letters, 3009 selfloop transitions, 7373 changer transitions 1337/11973 dead transitions. [2023-12-09 15:31:36,433 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 859 places, 11973 transitions, 460837 flow [2023-12-09 15:31:36,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-12-09 15:31:36,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-12-09 15:31:36,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2857 transitions. [2023-12-09 15:31:36,435 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7816689466484268 [2023-12-09 15:31:36,435 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2857 transitions. [2023-12-09 15:31:36,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2857 transitions. [2023-12-09 15:31:36,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-12-09 15:31:36,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2857 transitions. [2023-12-09 15:31:36,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 66.44186046511628) internal successors, (2857), 43 states have internal predecessors, (2857), 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) [2023-12-09 15:31:36,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 85.0) internal successors, (3740), 44 states have internal predecessors, (3740), 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) [2023-12-09 15:31:36,439 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 85.0) internal successors, (3740), 44 states have internal predecessors, (3740), 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) [2023-12-09 15:31:36,440 INFO L308 CegarLoopForPetriNet]: 75 programPoint places, 784 predicate places. [2023-12-09 15:31:36,440 INFO L500 AbstractCegarLoop]: Abstraction has has 859 places, 11973 transitions, 460837 flow [2023-12-09 15:31:36,440 INFO L501 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.27777777777777) internal successors, (1157), 18 states have internal predecessors, (1157), 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) [2023-12-09 15:31:36,440 INFO L225 CegarLoopForPetriNet]: Found error trace [2023-12-09 15:31:36,440 INFO L233 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-09 15:31:36,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-12-09 15:31:36,644 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:31:36,645 INFO L425 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-12-09 15:31:36,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-09 15:31:36,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1812331315, now seen corresponding path program 17 times [2023-12-09 15:31:36,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-09 15:31:36,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520414675] [2023-12-09 15:31:36,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-09 15:31:36,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-09 15:31:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-09 15:31:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:36,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-09 15:31:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520414675] [2023-12-09 15:31:36,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520414675] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-09 15:31:36,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104913109] [2023-12-09 15:31:36,779 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-12-09 15:31:36,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:31:36,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-09 15:31:36,794 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-09 15:31:36,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-12-09 15:31:36,873 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-12-09 15:31:36,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-12-09 15:31:36,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 12 conjunts are in the unsatisfiable core [2023-12-09 15:31:36,875 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-09 15:31:36,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:36,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-09 15:31:37,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-09 15:31:37,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [104913109] provided 0 perfect and 2 imperfect interpolant sequences [2023-12-09 15:31:37,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-12-09 15:31:37,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 19 [2023-12-09 15:31:37,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311143842] [2023-12-09 15:31:37,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-12-09 15:31:37,170 INFO L576 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-09 15:31:37,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-09 15:31:37,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-09 15:31:37,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2023-12-09 15:31:37,171 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 85 [2023-12-09 15:31:37,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 859 places, 11973 transitions, 460837 flow. Second operand has 19 states, 19 states have (on average 63.89473684210526) internal successors, (1214), 19 states have internal predecessors, (1214), 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) [2023-12-09 15:31:37,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-12-09 15:31:37,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 85 [2023-12-09 15:31:37,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-12-09 15:32:28,594 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 [2023-12-09 15:32:28,595 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-09 15:32:28,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-12-09 15:32:28,620 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-09 15:32:28,629 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-12-09 15:32:28,825 WARN L482 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-09 15:32:28,825 WARN L624 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 62/85 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 271793 conditions, 16552 events (6854/16551 cut-off events. For 256266/259753 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 172974 event pairs, 3 based on Foata normal form. 466/15483 useless extension candidates. Maximal degree in co-relation 246704. Up to 11814 conditions per place.). [2023-12-09 15:32:28,827 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-12-09 15:32:28,827 INFO L810 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-12-09 15:32:28,827 INFO L457 BasicCegarLoop]: Path program histogram: [17, 2, 1] [2023-12-09 15:32:28,830 INFO L222 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-12-09 15:32:28,830 INFO L172 ceAbstractionStarter]: Computing trace abstraction results [2023-12-09 15:32:28,833 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 03:32:28 BasicIcfg [2023-12-09 15:32:28,833 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-09 15:32:28,833 INFO L158 Benchmark]: Toolchain (without parser) took 262375.01ms. Allocated memory was 230.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 174.1MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-09 15:32:28,833 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-09 15:32:28,833 INFO L158 Benchmark]: CACSL2BoogieTranslator took 186.42ms. Allocated memory is still 230.7MB. Free memory was 174.1MB in the beginning and 163.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-12-09 15:32:28,833 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.52ms. Allocated memory is still 230.7MB. Free memory was 163.1MB in the beginning and 161.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-12-09 15:32:28,834 INFO L158 Benchmark]: Boogie Preprocessor took 22.31ms. Allocated memory is still 230.7MB. Free memory was 161.5MB in the beginning and 160.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-12-09 15:32:28,834 INFO L158 Benchmark]: RCFGBuilder took 282.18ms. Allocated memory is still 230.7MB. Free memory was 160.0MB in the beginning and 144.8MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-09 15:32:28,834 INFO L158 Benchmark]: TraceAbstraction took 261857.32ms. Allocated memory was 230.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 144.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. [2023-12-09 15:32:28,835 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 191.9MB. Free memory is still 140.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 186.42ms. Allocated memory is still 230.7MB. Free memory was 174.1MB in the beginning and 163.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 22.52ms. Allocated memory is still 230.7MB. Free memory was 163.1MB in the beginning and 161.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 22.31ms. Allocated memory is still 230.7MB. Free memory was 161.5MB in the beginning and 160.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 282.18ms. Allocated memory is still 230.7MB. Free memory was 160.0MB in the beginning and 144.8MB in the end (delta: 15.2MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 261857.32ms. Allocated memory was 230.7MB in the beginning and 2.6GB in the end (delta: 2.3GB). Free memory was 144.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 78]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 62/85 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 271793 conditions, 16552 events (6854/16551 cut-off events. For 256266/259753 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 172974 event pairs, 3 based on Foata normal form. 466/15483 useless extension candidates. Maximal degree in co-relation 246704. Up to 11814 conditions per place.). - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 62/85 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 271793 conditions, 16552 events (6854/16551 cut-off events. For 256266/259753 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 172974 event pairs, 3 based on Foata normal form. 466/15483 useless extension candidates. Maximal degree in co-relation 246704. Up to 11814 conditions per place.). - TimeoutResultAtElement [Line: 73]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (19states, 62/85 universal loopers) in iteration 20,while PetriNetUnfolder was constructing finite prefix that currently has 271793 conditions, 16552 events (6854/16551 cut-off events. For 256266/259753 co-relation queries the response was YES. Maximal size of possible extension queue 909. Compared 172974 event pairs, 3 based on Foata normal form. 466/15483 useless extension candidates. Maximal degree in co-relation 246704. Up to 11814 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 100 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: 261.8s, OverallIterations: 20, TraceHistogramMax: 2, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 247.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2665 SdHoareTripleChecker+Valid, 7.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2665 mSDsluCounter, 3052 SdHoareTripleChecker+Invalid, 6.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2548 mSDsCounter, 458 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9132 IncrementalHoareTripleChecker+Invalid, 9590 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 458 mSolverCounterUnsat, 504 mSDtfsCounter, 9132 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3321 GetRequests, 2380 SyntacticMatches, 25 SemanticMatches, 916 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18231 ImplicationChecksByTransitivity, 14.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=460837occurred in iteration=19, InterpolantAutomatonStates: 813, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 2721 NumberOfCodeBlocks, 2612 NumberOfCodeBlocksAsserted, 62 NumberOfCheckSat, 3897 ConstructedInterpolants, 0 QuantifiedInterpolants, 16387 SizeOfPredicates, 169 NumberOfNonLiveVariables, 2796 ConjunctsInSsa, 220 ConjunctsInUnsatCore, 55 InterpolantComputations, 3 PerfectInterpolantSequences, 221/375 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