/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 12:37:26,351 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 12:37:26,416 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2023-11-10 12:37:26,445 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 12:37:26,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 12:37:26,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 12:37:26,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 12:37:26,447 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 12:37:26,448 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 12:37:26,450 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 12:37:26,451 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 12:37:26,451 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 12:37:26,451 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 12:37:26,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 12:37:26,452 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 12:37:26,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 12:37:26,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 12:37:26,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 12:37:26,454 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 12:37:26,454 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 12:37:26,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:37:26,455 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 12:37:26,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 12:37:26,456 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 12:37:26,456 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 12:37:26,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 12:37:26,457 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 12:37:26,457 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 12:37:26,457 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 12:37:26,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 12:37:26,683 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 12:37:26,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 12:37:26,686 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 12:37:26,688 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 12:37:26,689 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-11-10 12:37:27,792 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 12:37:27,954 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 12:37:27,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-nonblocking-cntr.wvr.c [2023-11-10 12:37:27,960 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d246c5f/ff0a370f61a64f12b7c6280e4b3c9fd1/FLAG310e1b4ef [2023-11-10 12:37:27,976 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7d246c5f/ff0a370f61a64f12b7c6280e4b3c9fd1 [2023-11-10 12:37:27,980 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 12:37:27,982 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 12:37:27,984 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 12:37:27,984 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 12:37:27,988 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 12:37:27,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:37:27" (1/1) ... [2023-11-10 12:37:27,989 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b8d3696 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:27, skipping insertion in model container [2023-11-10 12:37:27,991 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 12:37:27" (1/1) ... [2023-11-10 12:37:28,013 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 12:37:28,155 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-nonblocking-cntr.wvr.c[2037,2050] [2023-11-10 12:37:28,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:37:28,168 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 12:37:28,188 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-nonblocking-cntr.wvr.c[2037,2050] [2023-11-10 12:37:28,189 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 12:37:28,194 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:37:28,194 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-10 12:37:28,200 INFO L206 MainTranslator]: Completed translation [2023-11-10 12:37:28,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28 WrapperNode [2023-11-10 12:37:28,201 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 12:37:28,202 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 12:37:28,202 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 12:37:28,202 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 12:37:28,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,214 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,230 INFO L138 Inliner]: procedures = 21, calls = 24, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2023-11-10 12:37:28,231 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 12:37:28,231 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 12:37:28,231 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 12:37:28,231 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 12:37:28,238 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,238 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,239 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,240 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,242 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,244 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,245 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,245 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 12:37:28,247 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 12:37:28,247 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 12:37:28,247 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 12:37:28,248 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (1/1) ... [2023-11-10 12:37:28,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 12:37:28,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:28,272 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-10 12:37:28,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-10 12:37:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 12:37:28,297 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-10 12:37:28,297 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-10 12:37:28,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 12:37:28,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 12:37:28,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 12:37:28,299 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 12:37:28,358 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 12:37:28,360 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 12:37:28,471 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 12:37:28,500 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 12:37:28,500 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-10 12:37:28,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:37:28 BoogieIcfgContainer [2023-11-10 12:37:28,502 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 12:37:28,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 12:37:28,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 12:37:28,506 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 12:37:28,506 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 12:37:27" (1/3) ... [2023-11-10 12:37:28,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7112ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:37:28, skipping insertion in model container [2023-11-10 12:37:28,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 12:37:28" (2/3) ... [2023-11-10 12:37:28,507 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7112ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 12:37:28, skipping insertion in model container [2023-11-10 12:37:28,507 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 12:37:28" (3/3) ... [2023-11-10 12:37:28,508 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-nonblocking-cntr.wvr.c [2023-11-10 12:37:28,520 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 12:37:28,520 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-10 12:37:28,520 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 12:37:28,578 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-10 12:37:28,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 80 transitions, 174 flow [2023-11-10 12:37:28,636 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2023-11-10 12:37:28,639 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:37:28,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-11-10 12:37:28,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 81 places, 80 transitions, 174 flow [2023-11-10 12:37:28,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 69 transitions, 150 flow [2023-11-10 12:37:28,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 12:37:28,661 INFO L357 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=false, 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;@575bc4d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 12:37:28,661 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-10 12:37:28,676 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 12:37:28,676 INFO L124 PetriNetUnfolderBase]: 6/68 cut-off events. [2023-11-10 12:37:28,676 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-10 12:37:28,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:28,677 INFO L208 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] [2023-11-10 12:37:28,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:28,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:28,681 INFO L85 PathProgramCache]: Analyzing trace with hash -253742228, now seen corresponding path program 1 times [2023-11-10 12:37:28,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:28,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613091774] [2023-11-10 12:37:28,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:28,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:29,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:29,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:29,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613091774] [2023-11-10 12:37:29,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613091774] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:37:29,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:37:29,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 12:37:29,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257377924] [2023-11-10 12:37:29,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:37:29,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:37:29,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:29,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:37:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2023-11-10 12:37:29,215 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 80 [2023-11-10 12:37:29,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 69 transitions, 150 flow. Second operand has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:29,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 80 [2023-11-10 12:37:29,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:29,324 INFO L124 PetriNetUnfolderBase]: 70/193 cut-off events. [2023-11-10 12:37:29,324 INFO L125 PetriNetUnfolderBase]: For 27/27 co-relation queries the response was YES. [2023-11-10 12:37:29,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 193 events. 70/193 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 601 event pairs, 29 based on Foata normal form. 2/160 useless extension candidates. Maximal degree in co-relation 281. Up to 96 conditions per place. [2023-11-10 12:37:29,327 INFO L140 encePairwiseOnDemand]: 70/80 looper letters, 31 selfloop transitions, 5 changer transitions 2/73 dead transitions. [2023-11-10 12:37:29,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 73 transitions, 237 flow [2023-11-10 12:37:29,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:37:29,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:37:29,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 315 transitions. [2023-11-10 12:37:29,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65625 [2023-11-10 12:37:29,344 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 315 transitions. [2023-11-10 12:37:29,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 315 transitions. [2023-11-10 12:37:29,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:29,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 315 transitions. [2023-11-10 12:37:29,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 52.5) internal successors, (315), 6 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,354 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,355 INFO L175 Difference]: Start difference. First operand has 70 places, 69 transitions, 150 flow. Second operand 6 states and 315 transitions. [2023-11-10 12:37:29,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 73 transitions, 237 flow [2023-11-10 12:37:29,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 73 transitions, 227 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:37:29,360 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 148 flow [2023-11-10 12:37:29,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=148, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-11-10 12:37:29,363 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-11-10 12:37:29,363 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 148 flow [2023-11-10 12:37:29,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 48.666666666666664) internal successors, (292), 6 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:29,364 INFO L208 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] [2023-11-10 12:37:29,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 12:37:29,364 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:29,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:29,365 INFO L85 PathProgramCache]: Analyzing trace with hash -2027219803, now seen corresponding path program 1 times [2023-11-10 12:37:29,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:29,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236656862] [2023-11-10 12:37:29,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:29,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:29,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:29,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:29,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236656862] [2023-11-10 12:37:29,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236656862] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:37:29,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 12:37:29,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 12:37:29,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436968442] [2023-11-10 12:37:29,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:37:29,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 12:37:29,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:29,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 12:37:29,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-10 12:37:29,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 80 [2023-11-10 12:37:29,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:29,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 80 [2023-11-10 12:37:29,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:29,580 INFO L124 PetriNetUnfolderBase]: 95/302 cut-off events. [2023-11-10 12:37:29,580 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-11-10 12:37:29,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 557 conditions, 302 events. 95/302 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1198 event pairs, 41 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 392. Up to 123 conditions per place. [2023-11-10 12:37:29,586 INFO L140 encePairwiseOnDemand]: 73/80 looper letters, 35 selfloop transitions, 5 changer transitions 1/86 dead transitions. [2023-11-10 12:37:29,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 297 flow [2023-11-10 12:37:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:37:29,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:37:29,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 381 transitions. [2023-11-10 12:37:29,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.79375 [2023-11-10 12:37:29,590 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 381 transitions. [2023-11-10 12:37:29,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 381 transitions. [2023-11-10 12:37:29,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:29,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 381 transitions. [2023-11-10 12:37:29,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 63.5) internal successors, (381), 6 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,594 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,595 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 148 flow. Second operand 6 states and 381 transitions. [2023-11-10 12:37:29,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 297 flow [2023-11-10 12:37:29,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 86 transitions, 285 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-10 12:37:29,598 INFO L231 Difference]: Finished difference. Result has 74 places, 66 transitions, 166 flow [2023-11-10 12:37:29,599 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=166, PETRI_PLACES=74, PETRI_TRANSITIONS=66} [2023-11-10 12:37:29,599 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 4 predicate places. [2023-11-10 12:37:29,600 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 66 transitions, 166 flow [2023-11-10 12:37:29,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:29,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:29,600 INFO L208 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] [2023-11-10 12:37:29,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 12:37:29,601 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:29,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:29,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1382722523, now seen corresponding path program 2 times [2023-11-10 12:37:29,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:29,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329381161] [2023-11-10 12:37:29,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:29,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:29,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:29,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:29,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329381161] [2023-11-10 12:37:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329381161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218611893] [2023-11-10 12:37:29,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:37:29,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:29,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:29,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:29,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-10 12:37:29,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-10 12:37:29,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:29,845 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-10 12:37:29,848 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:29,997 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:37:29,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-10 12:37:29,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218611893] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 12:37:29,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-10 12:37:29,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2023-11-10 12:37:29,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258638811] [2023-11-10 12:37:29,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 12:37:29,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 12:37:29,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 12:37:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-10 12:37:30,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 80 [2023-11-10 12:37:30,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 66 transitions, 166 flow. Second operand has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:30,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:30,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 80 [2023-11-10 12:37:30,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:30,099 INFO L124 PetriNetUnfolderBase]: 44/167 cut-off events. [2023-11-10 12:37:30,099 INFO L125 PetriNetUnfolderBase]: For 53/59 co-relation queries the response was YES. [2023-11-10 12:37:30,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 167 events. 44/167 cut-off events. For 53/59 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 532 event pairs, 21 based on Foata normal form. 13/174 useless extension candidates. Maximal degree in co-relation 302. Up to 72 conditions per place. [2023-11-10 12:37:30,101 INFO L140 encePairwiseOnDemand]: 72/80 looper letters, 24 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-10 12:37:30,101 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 70 transitions, 237 flow [2023-11-10 12:37:30,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-10 12:37:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-10 12:37:30,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 416 transitions. [2023-11-10 12:37:30,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.65 [2023-11-10 12:37:30,103 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 416 transitions. [2023-11-10 12:37:30,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 416 transitions. [2023-11-10 12:37:30,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:30,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 416 transitions. [2023-11-10 12:37:30,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 52.0) internal successors, (416), 8 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:30,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:30,105 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 80.0) internal successors, (720), 9 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:30,105 INFO L175 Difference]: Start difference. First operand has 74 places, 66 transitions, 166 flow. Second operand 8 states and 416 transitions. [2023-11-10 12:37:30,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 70 transitions, 237 flow [2023-11-10 12:37:30,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 70 transitions, 225 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-10 12:37:30,109 INFO L231 Difference]: Finished difference. Result has 75 places, 65 transitions, 164 flow [2023-11-10 12:37:30,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=164, PETRI_PLACES=75, PETRI_TRANSITIONS=65} [2023-11-10 12:37:30,111 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2023-11-10 12:37:30,111 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 65 transitions, 164 flow [2023-11-10 12:37:30,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 51.833333333333336) internal successors, (311), 6 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:30,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:30,111 INFO L208 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] [2023-11-10 12:37:30,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:30,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:30,317 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:30,317 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:30,318 INFO L85 PathProgramCache]: Analyzing trace with hash -506570848, now seen corresponding path program 1 times [2023-11-10 12:37:30,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:30,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559723504] [2023-11-10 12:37:30,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:30,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:30,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:30,489 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:30,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559723504] [2023-11-10 12:37:30,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559723504] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:30,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907860526] [2023-11-10 12:37:30,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:30,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:30,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:30,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:30,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-10 12:37:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:30,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:37:30,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:30,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:30,633 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:31,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:31,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907860526] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:31,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:31,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 8 [2023-11-10 12:37:31,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160526191] [2023-11-10 12:37:31,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:31,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 12:37:31,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:31,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 12:37:31,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-10 12:37:31,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:31,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 65 transitions, 164 flow. Second operand has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:31,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:31,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:31,088 INFO L124 PetriNetUnfolderBase]: 17/167 cut-off events. [2023-11-10 12:37:31,089 INFO L125 PetriNetUnfolderBase]: For 34/43 co-relation queries the response was YES. [2023-11-10 12:37:31,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 167 events. 17/167 cut-off events. For 34/43 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 456 event pairs, 0 based on Foata normal form. 5/172 useless extension candidates. Maximal degree in co-relation 120. Up to 21 conditions per place. [2023-11-10 12:37:31,090 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 31 selfloop transitions, 5 changer transitions 5/86 dead transitions. [2023-11-10 12:37:31,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 306 flow [2023-11-10 12:37:31,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 12:37:31,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 12:37:31,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 363 transitions. [2023-11-10 12:37:31,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75625 [2023-11-10 12:37:31,091 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 363 transitions. [2023-11-10 12:37:31,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 363 transitions. [2023-11-10 12:37:31,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:31,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 363 transitions. [2023-11-10 12:37:31,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 60.5) internal successors, (363), 6 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,093 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 80.0) internal successors, (560), 7 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,093 INFO L175 Difference]: Start difference. First operand has 75 places, 65 transitions, 164 flow. Second operand 6 states and 363 transitions. [2023-11-10 12:37:31,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 306 flow [2023-11-10 12:37:31,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 86 transitions, 288 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-10 12:37:31,095 INFO L231 Difference]: Finished difference. Result has 77 places, 69 transitions, 192 flow [2023-11-10 12:37:31,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=192, PETRI_PLACES=77, PETRI_TRANSITIONS=69} [2023-11-10 12:37:31,096 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 7 predicate places. [2023-11-10 12:37:31,096 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 69 transitions, 192 flow [2023-11-10 12:37:31,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 57.875) internal successors, (463), 8 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:31,096 INFO L208 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] [2023-11-10 12:37:31,118 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:31,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-10 12:37:31,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:31,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash -23030616, now seen corresponding path program 2 times [2023-11-10 12:37:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579916784] [2023-11-10 12:37:31,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:31,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:31,374 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:37:31,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:31,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579916784] [2023-11-10 12:37:31,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579916784] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:31,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939071577] [2023-11-10 12:37:31,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:37:31,379 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:31,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:31,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-10 12:37:31,441 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:37:31,441 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:31,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-10 12:37:31,446 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:31,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:37:31,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:31,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:37:31,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939071577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:31,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:31,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 10 [2023-11-10 12:37:31,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814089167] [2023-11-10 12:37:31,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:31,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-10 12:37:31,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:31,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-10 12:37:31,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-10 12:37:31,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 80 [2023-11-10 12:37:31,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 69 transitions, 192 flow. Second operand has 10 states, 10 states have (on average 61.8) internal successors, (618), 10 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,578 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:31,578 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 80 [2023-11-10 12:37:31,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:31,662 INFO L124 PetriNetUnfolderBase]: 109/378 cut-off events. [2023-11-10 12:37:31,662 INFO L125 PetriNetUnfolderBase]: For 199/209 co-relation queries the response was YES. [2023-11-10 12:37:31,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 834 conditions, 378 events. 109/378 cut-off events. For 199/209 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1816 event pairs, 24 based on Foata normal form. 15/384 useless extension candidates. Maximal degree in co-relation 815. Up to 124 conditions per place. [2023-11-10 12:37:31,665 INFO L140 encePairwiseOnDemand]: 74/80 looper letters, 34 selfloop transitions, 15 changer transitions 0/97 dead transitions. [2023-11-10 12:37:31,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 97 transitions, 409 flow [2023-11-10 12:37:31,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-10 12:37:31,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-10 12:37:31,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 452 transitions. [2023-11-10 12:37:31,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8071428571428572 [2023-11-10 12:37:31,667 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 452 transitions. [2023-11-10 12:37:31,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 452 transitions. [2023-11-10 12:37:31,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:31,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 452 transitions. [2023-11-10 12:37:31,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 64.57142857142857) internal successors, (452), 7 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,669 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,669 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 80.0) internal successors, (640), 8 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,669 INFO L175 Difference]: Start difference. First operand has 77 places, 69 transitions, 192 flow. Second operand 7 states and 452 transitions. [2023-11-10 12:37:31,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 97 transitions, 409 flow [2023-11-10 12:37:31,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 97 transitions, 405 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-10 12:37:31,673 INFO L231 Difference]: Finished difference. Result has 84 places, 82 transitions, 333 flow [2023-11-10 12:37:31,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=188, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=84, PETRI_TRANSITIONS=82} [2023-11-10 12:37:31,675 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 14 predicate places. [2023-11-10 12:37:31,675 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 82 transitions, 333 flow [2023-11-10 12:37:31,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 61.8) internal successors, (618), 10 states have internal predecessors, (618), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:31,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:31,676 INFO L208 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] [2023-11-10 12:37:31,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:31,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:31,881 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:31,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:31,881 INFO L85 PathProgramCache]: Analyzing trace with hash -905335369, now seen corresponding path program 3 times [2023-11-10 12:37:31,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:31,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679039467] [2023-11-10 12:37:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:32,067 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:32,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:32,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679039467] [2023-11-10 12:37:32,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679039467] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:32,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704727028] [2023-11-10 12:37:32,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:37:32,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:32,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:32,069 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:32,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-10 12:37:32,141 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-10 12:37:32,141 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:32,142 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-10 12:37:32,143 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:32,252 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:32,252 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:32,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704727028] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:32,361 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:32,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 22 [2023-11-10 12:37:32,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144021894] [2023-11-10 12:37:32,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:32,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:37:32,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:32,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:37:32,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:37:32,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:32,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 82 transitions, 333 flow. Second operand has 22 states, 22 states have (on average 56.63636363636363) internal successors, (1246), 22 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:32,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:32,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:32,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:33,736 INFO L124 PetriNetUnfolderBase]: 387/1028 cut-off events. [2023-11-10 12:37:33,737 INFO L125 PetriNetUnfolderBase]: For 1757/1757 co-relation queries the response was YES. [2023-11-10 12:37:33,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3062 conditions, 1028 events. 387/1028 cut-off events. For 1757/1757 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5807 event pairs, 8 based on Foata normal form. 33/1060 useless extension candidates. Maximal degree in co-relation 2417. Up to 199 conditions per place. [2023-11-10 12:37:33,743 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 137 selfloop transitions, 206 changer transitions 23/408 dead transitions. [2023-11-10 12:37:33,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 408 transitions, 2929 flow [2023-11-10 12:37:33,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-10 12:37:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-11-10 12:37:33,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 4690 transitions. [2023-11-10 12:37:33,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7237654320987654 [2023-11-10 12:37:33,754 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 4690 transitions. [2023-11-10 12:37:33,754 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 4690 transitions. [2023-11-10 12:37:33,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:33,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 4690 transitions. [2023-11-10 12:37:33,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 57.901234567901234) internal successors, (4690), 81 states have internal predecessors, (4690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:33,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 80.0) internal successors, (6560), 82 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:33,776 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 80.0) internal successors, (6560), 82 states have internal predecessors, (6560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:33,776 INFO L175 Difference]: Start difference. First operand has 84 places, 82 transitions, 333 flow. Second operand 81 states and 4690 transitions. [2023-11-10 12:37:33,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 408 transitions, 2929 flow [2023-11-10 12:37:33,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 408 transitions, 2917 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-11-10 12:37:33,789 INFO L231 Difference]: Finished difference. Result has 206 places, 268 transitions, 2200 flow [2023-11-10 12:37:33,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=2200, PETRI_PLACES=206, PETRI_TRANSITIONS=268} [2023-11-10 12:37:33,791 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 136 predicate places. [2023-11-10 12:37:33,792 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 268 transitions, 2200 flow [2023-11-10 12:37:33,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 56.63636363636363) internal successors, (1246), 22 states have internal predecessors, (1246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:33,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:33,792 INFO L208 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] [2023-11-10 12:37:33,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-10 12:37:33,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:33,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:33,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:33,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1298472977, now seen corresponding path program 4 times [2023-11-10 12:37:33,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:33,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422012616] [2023-11-10 12:37:33,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:33,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:34,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:34,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422012616] [2023-11-10 12:37:34,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422012616] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:34,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784502930] [2023-11-10 12:37:34,162 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:37:34,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:34,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:34,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:34,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-10 12:37:34,223 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:37:34,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:34,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:37:34,225 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:34,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:34,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784502930] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:34,523 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:34,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 25 [2023-11-10 12:37:34,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438516846] [2023-11-10 12:37:34,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:34,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-10 12:37:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:34,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-10 12:37:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=484, Unknown=0, NotChecked=0, Total=600 [2023-11-10 12:37:34,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:34,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 268 transitions, 2200 flow. Second operand has 25 states, 25 states have (on average 56.64) internal successors, (1416), 25 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:34,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:34,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:34,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:35,365 INFO L124 PetriNetUnfolderBase]: 554/1405 cut-off events. [2023-11-10 12:37:35,366 INFO L125 PetriNetUnfolderBase]: For 51534/51534 co-relation queries the response was YES. [2023-11-10 12:37:35,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9008 conditions, 1405 events. 554/1405 cut-off events. For 51534/51534 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 8446 event pairs, 8 based on Foata normal form. 34/1437 useless extension candidates. Maximal degree in co-relation 8243. Up to 289 conditions per place. [2023-11-10 12:37:35,380 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 157 selfloop transitions, 350 changer transitions 7/556 dead transitions. [2023-11-10 12:37:35,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 556 transitions, 6549 flow [2023-11-10 12:37:35,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-10 12:37:35,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-10 12:37:35,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2499 transitions. [2023-11-10 12:37:35,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726453488372093 [2023-11-10 12:37:35,384 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2499 transitions. [2023-11-10 12:37:35,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2499 transitions. [2023-11-10 12:37:35,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:35,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2499 transitions. [2023-11-10 12:37:35,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 58.116279069767444) internal successors, (2499), 43 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:35,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 80.0) internal successors, (3520), 44 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:35,398 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 80.0) internal successors, (3520), 44 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:35,398 INFO L175 Difference]: Start difference. First operand has 206 places, 268 transitions, 2200 flow. Second operand 43 states and 2499 transitions. [2023-11-10 12:37:35,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 556 transitions, 6549 flow [2023-11-10 12:37:35,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 556 transitions, 5911 flow, removed 241 selfloop flow, removed 6 redundant places. [2023-11-10 12:37:35,481 INFO L231 Difference]: Finished difference. Result has 256 places, 470 transitions, 5443 flow [2023-11-10 12:37:35,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=1914, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5443, PETRI_PLACES=256, PETRI_TRANSITIONS=470} [2023-11-10 12:37:35,482 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 186 predicate places. [2023-11-10 12:37:35,482 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 470 transitions, 5443 flow [2023-11-10 12:37:35,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 56.64) internal successors, (1416), 25 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:35,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:35,483 INFO L208 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] [2023-11-10 12:37:35,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-10 12:37:35,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:35,688 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:35,688 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:35,688 INFO L85 PathProgramCache]: Analyzing trace with hash -828622469, now seen corresponding path program 5 times [2023-11-10 12:37:35,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:35,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597424155] [2023-11-10 12:37:35,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:35,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:35,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:35,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:35,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597424155] [2023-11-10 12:37:35,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597424155] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:35,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047848311] [2023-11-10 12:37:35,822 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:37:35,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:35,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:35,824 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:37:35,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-10 12:37:35,914 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-10 12:37:35,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:35,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:35,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:36,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:36,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047848311] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:36,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:36,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2023-11-10 12:37:36,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478682403] [2023-11-10 12:37:36,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:36,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:37:36,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:36,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:37:36,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:37:36,179 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:36,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 470 transitions, 5443 flow. Second operand has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:36,180 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:36,180 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:36,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:37,594 INFO L124 PetriNetUnfolderBase]: 826/2063 cut-off events. [2023-11-10 12:37:37,595 INFO L125 PetriNetUnfolderBase]: For 77472/77472 co-relation queries the response was YES. [2023-11-10 12:37:37,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14362 conditions, 2063 events. 826/2063 cut-off events. For 77472/77472 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 13783 event pairs, 9 based on Foata normal form. 39/2100 useless extension candidates. Maximal degree in co-relation 12521. Up to 385 conditions per place. [2023-11-10 12:37:37,620 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 229 selfloop transitions, 629 changer transitions 7/907 dead transitions. [2023-11-10 12:37:37,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 907 transitions, 12764 flow [2023-11-10 12:37:37,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2023-11-10 12:37:37,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2023-11-10 12:37:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 4348 transitions. [2023-11-10 12:37:37,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7246666666666667 [2023-11-10 12:37:37,704 INFO L72 ComplementDD]: Start complementDD. Operand 75 states and 4348 transitions. [2023-11-10 12:37:37,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 75 states and 4348 transitions. [2023-11-10 12:37:37,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:37,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 75 states and 4348 transitions. [2023-11-10 12:37:37,713 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 76 states, 75 states have (on average 57.973333333333336) internal successors, (4348), 75 states have internal predecessors, (4348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:37,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 76 states, 76 states have (on average 80.0) internal successors, (6080), 76 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:37,721 INFO L81 ComplementDD]: Finished complementDD. Result has 76 states, 76 states have (on average 80.0) internal successors, (6080), 76 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:37,721 INFO L175 Difference]: Start difference. First operand has 256 places, 470 transitions, 5443 flow. Second operand 75 states and 4348 transitions. [2023-11-10 12:37:37,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 907 transitions, 12764 flow [2023-11-10 12:37:37,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 907 transitions, 10997 flow, removed 858 selfloop flow, removed 9 redundant places. [2023-11-10 12:37:37,960 INFO L231 Difference]: Finished difference. Result has 354 places, 774 transitions, 10006 flow [2023-11-10 12:37:37,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=4528, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=340, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=75, PETRI_FLOW=10006, PETRI_PLACES=354, PETRI_TRANSITIONS=774} [2023-11-10 12:37:37,963 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 284 predicate places. [2023-11-10 12:37:37,963 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 774 transitions, 10006 flow [2023-11-10 12:37:37,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:37,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:37,965 INFO L208 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] [2023-11-10 12:37:37,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:38,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:38,185 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:38,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:38,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1582793765, now seen corresponding path program 6 times [2023-11-10 12:37:38,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:38,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939743216] [2023-11-10 12:37:38,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:38,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:38,338 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:38,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939743216] [2023-11-10 12:37:38,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939743216] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:38,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282985873] [2023-11-10 12:37:38,339 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:37:38,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:38,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:38,340 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) [2023-11-10 12:37:38,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-10 12:37:38,418 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-10 12:37:38,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:38,419 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:38,420 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:38,548 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:38,548 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:38,661 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:38,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282985873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:38,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:38,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 22 [2023-11-10 12:37:38,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460729692] [2023-11-10 12:37:38,663 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:38,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:37:38,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:38,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:37:38,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:37:38,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:38,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 774 transitions, 10006 flow. Second operand has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:38,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:38,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:38,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:39,811 INFO L124 PetriNetUnfolderBase]: 889/2130 cut-off events. [2023-11-10 12:37:39,811 INFO L125 PetriNetUnfolderBase]: For 56627/56627 co-relation queries the response was YES. [2023-11-10 12:37:39,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15299 conditions, 2130 events. 889/2130 cut-off events. For 56627/56627 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 14040 event pairs, 27 based on Foata normal form. 1/2121 useless extension candidates. Maximal degree in co-relation 14550. Up to 417 conditions per place. [2023-11-10 12:37:39,915 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 344 selfloop transitions, 611 changer transitions 19/1016 dead transitions. [2023-11-10 12:37:39,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 1016 transitions, 15869 flow [2023-11-10 12:37:39,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-11-10 12:37:39,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-11-10 12:37:39,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2446 transitions. [2023-11-10 12:37:39,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7279761904761904 [2023-11-10 12:37:39,922 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2446 transitions. [2023-11-10 12:37:39,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2446 transitions. [2023-11-10 12:37:39,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:39,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2446 transitions. [2023-11-10 12:37:39,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 58.23809523809524) internal successors, (2446), 42 states have internal predecessors, (2446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:39,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 80.0) internal successors, (3440), 43 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:39,941 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 80.0) internal successors, (3440), 43 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:39,941 INFO L175 Difference]: Start difference. First operand has 354 places, 774 transitions, 10006 flow. Second operand 42 states and 2446 transitions. [2023-11-10 12:37:39,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 395 places, 1016 transitions, 15869 flow [2023-11-10 12:37:40,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 370 places, 1016 transitions, 15347 flow, removed 128 selfloop flow, removed 25 redundant places. [2023-11-10 12:37:40,176 INFO L231 Difference]: Finished difference. Result has 379 places, 895 transitions, 12992 flow [2023-11-10 12:37:40,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=9609, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=494, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=12992, PETRI_PLACES=379, PETRI_TRANSITIONS=895} [2023-11-10 12:37:40,177 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 309 predicate places. [2023-11-10 12:37:40,177 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 895 transitions, 12992 flow [2023-11-10 12:37:40,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:40,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:40,178 INFO L208 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] [2023-11-10 12:37:40,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:40,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:40,383 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:40,383 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:40,384 INFO L85 PathProgramCache]: Analyzing trace with hash -463322701, now seen corresponding path program 7 times [2023-11-10 12:37:40,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:40,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917001945] [2023-11-10 12:37:40,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:40,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:40,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:40,515 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:40,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917001945] [2023-11-10 12:37:40,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917001945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:40,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427852030] [2023-11-10 12:37:40,516 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:37:40,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:40,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:40,534 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) [2023-11-10 12:37:40,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-10 12:37:40,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:40,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:40,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:40,744 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:40,744 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:40,906 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:40,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427852030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:40,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:40,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:37:40,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177455739] [2023-11-10 12:37:40,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:40,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:37:40,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:40,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:37:40,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:37:40,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:40,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 895 transitions, 12992 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:40,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:40,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:40,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:41,822 INFO L124 PetriNetUnfolderBase]: 900/2162 cut-off events. [2023-11-10 12:37:41,823 INFO L125 PetriNetUnfolderBase]: For 59741/59741 co-relation queries the response was YES. [2023-11-10 12:37:41,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16393 conditions, 2162 events. 900/2162 cut-off events. For 59741/59741 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 14281 event pairs, 30 based on Foata normal form. 1/2153 useless extension candidates. Maximal degree in co-relation 15834. Up to 419 conditions per place. [2023-11-10 12:37:41,854 INFO L140 encePairwiseOnDemand]: 68/80 looper letters, 391 selfloop transitions, 536 changer transitions 5/974 dead transitions. [2023-11-10 12:37:41,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 398 places, 974 transitions, 16134 flow [2023-11-10 12:37:41,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-10 12:37:41,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-11-10 12:37:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 1289 transitions. [2023-11-10 12:37:41,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7323863636363637 [2023-11-10 12:37:41,858 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 1289 transitions. [2023-11-10 12:37:41,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 1289 transitions. [2023-11-10 12:37:41,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:41,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 1289 transitions. [2023-11-10 12:37:41,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 58.59090909090909) internal successors, (1289), 22 states have internal predecessors, (1289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:41,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:41,861 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 80.0) internal successors, (1840), 23 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:41,861 INFO L175 Difference]: Start difference. First operand has 379 places, 895 transitions, 12992 flow. Second operand 22 states and 1289 transitions. [2023-11-10 12:37:41,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 398 places, 974 transitions, 16134 flow [2023-11-10 12:37:42,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 974 transitions, 15403 flow, removed 63 selfloop flow, removed 25 redundant places. [2023-11-10 12:37:42,207 INFO L231 Difference]: Finished difference. Result has 377 places, 921 transitions, 13827 flow [2023-11-10 12:37:42,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=12345, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=895, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=13827, PETRI_PLACES=377, PETRI_TRANSITIONS=921} [2023-11-10 12:37:42,208 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 307 predicate places. [2023-11-10 12:37:42,208 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 921 transitions, 13827 flow [2023-11-10 12:37:42,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:42,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:42,209 INFO L208 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] [2023-11-10 12:37:42,214 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-10 12:37:42,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-10 12:37:42,414 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:42,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -926582243, now seen corresponding path program 8 times [2023-11-10 12:37:42,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:42,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802952139] [2023-11-10 12:37:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:42,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:42,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:42,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802952139] [2023-11-10 12:37:42,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802952139] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:42,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594868597] [2023-11-10 12:37:42,525 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:37:42,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:42,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:42,543 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) [2023-11-10 12:37:42,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-10 12:37:42,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:37:42,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:42,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:42,595 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:42,709 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:42,709 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:42,834 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:42,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594868597] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:42,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:42,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-11-10 12:37:42,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270195075] [2023-11-10 12:37:42,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:42,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-10 12:37:42,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:42,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-10 12:37:42,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2023-11-10 12:37:42,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:42,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 921 transitions, 13827 flow. Second operand has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:42,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:42,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:42,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:44,587 INFO L124 PetriNetUnfolderBase]: 1332/3079 cut-off events. [2023-11-10 12:37:44,588 INFO L125 PetriNetUnfolderBase]: For 101529/101529 co-relation queries the response was YES. [2023-11-10 12:37:44,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25412 conditions, 3079 events. 1332/3079 cut-off events. For 101529/101529 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 21530 event pairs, 34 based on Foata normal form. 9/3075 useless extension candidates. Maximal degree in co-relation 24707. Up to 579 conditions per place. [2023-11-10 12:37:44,623 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 512 selfloop transitions, 941 changer transitions 9/1504 dead transitions. [2023-11-10 12:37:44,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 1504 transitions, 26367 flow [2023-11-10 12:37:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-10 12:37:44,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-10 12:37:44,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2634 transitions. [2023-11-10 12:37:44,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7316666666666667 [2023-11-10 12:37:44,626 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2634 transitions. [2023-11-10 12:37:44,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2634 transitions. [2023-11-10 12:37:44,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:44,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2634 transitions. [2023-11-10 12:37:44,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 58.53333333333333) internal successors, (2634), 45 states have internal predecessors, (2634), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:44,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 80.0) internal successors, (3680), 46 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:44,632 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 80.0) internal successors, (3680), 46 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:44,632 INFO L175 Difference]: Start difference. First operand has 377 places, 921 transitions, 13827 flow. Second operand 45 states and 2634 transitions. [2023-11-10 12:37:44,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 1504 transitions, 26367 flow [2023-11-10 12:37:45,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 1504 transitions, 25266 flow, removed 66 selfloop flow, removed 9 redundant places. [2023-11-10 12:37:45,117 INFO L231 Difference]: Finished difference. Result has 430 places, 1285 transitions, 22185 flow [2023-11-10 12:37:45,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=13132, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=921, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=586, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=22185, PETRI_PLACES=430, PETRI_TRANSITIONS=1285} [2023-11-10 12:37:45,118 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 360 predicate places. [2023-11-10 12:37:45,118 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 1285 transitions, 22185 flow [2023-11-10 12:37:45,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:45,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:45,118 INFO L208 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] [2023-11-10 12:37:45,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-10 12:37:45,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:45,323 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:45,323 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:45,323 INFO L85 PathProgramCache]: Analyzing trace with hash 833320215, now seen corresponding path program 9 times [2023-11-10 12:37:45,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:45,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049416977] [2023-11-10 12:37:45,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:45,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:45,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:45,473 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:45,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049416977] [2023-11-10 12:37:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049416977] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:45,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1788041408] [2023-11-10 12:37:45,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:37:45,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:45,476 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:45,490 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) [2023-11-10 12:37:45,493 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-10 12:37:45,586 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-10 12:37:45,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:45,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:37:45,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:45,801 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:45,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:45,996 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:45,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1788041408] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:45,996 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:45,996 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2023-11-10 12:37:45,996 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659538873] [2023-11-10 12:37:45,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:45,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-10 12:37:45,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:45,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-10 12:37:45,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2023-11-10 12:37:45,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:46,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 1285 transitions, 22185 flow. Second operand has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:46,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:46,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:46,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:47,955 INFO L124 PetriNetUnfolderBase]: 1586/3648 cut-off events. [2023-11-10 12:37:47,956 INFO L125 PetriNetUnfolderBase]: For 146809/146809 co-relation queries the response was YES. [2023-11-10 12:37:47,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32753 conditions, 3648 events. 1586/3648 cut-off events. For 146809/146809 co-relation queries the response was YES. Maximal size of possible extension queue 209. Compared 26789 event pairs, 28 based on Foata normal form. 2/3648 useless extension candidates. Maximal degree in co-relation 31821. Up to 709 conditions per place. [2023-11-10 12:37:48,004 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 289 selfloop transitions, 1361 changer transitions 1/1693 dead transitions. [2023-11-10 12:37:48,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 1693 transitions, 32209 flow [2023-11-10 12:37:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-11-10 12:37:48,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-11-10 12:37:48,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 2947 transitions. [2023-11-10 12:37:48,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7223039215686274 [2023-11-10 12:37:48,006 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 2947 transitions. [2023-11-10 12:37:48,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 2947 transitions. [2023-11-10 12:37:48,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:48,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 2947 transitions. [2023-11-10 12:37:48,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 57.78431372549019) internal successors, (2947), 51 states have internal predecessors, (2947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:48,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 80.0) internal successors, (4160), 52 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:48,012 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 80.0) internal successors, (4160), 52 states have internal predecessors, (4160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:48,013 INFO L175 Difference]: Start difference. First operand has 430 places, 1285 transitions, 22185 flow. Second operand 51 states and 2947 transitions. [2023-11-10 12:37:48,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 1693 transitions, 32209 flow [2023-11-10 12:37:48,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 1693 transitions, 31251 flow, removed 259 selfloop flow, removed 16 redundant places. [2023-11-10 12:37:48,962 INFO L231 Difference]: Finished difference. Result has 477 places, 1608 transitions, 31654 flow [2023-11-10 12:37:48,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=21295, PETRI_DIFFERENCE_MINUEND_PLACES=412, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1049, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=31654, PETRI_PLACES=477, PETRI_TRANSITIONS=1608} [2023-11-10 12:37:48,964 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 407 predicate places. [2023-11-10 12:37:48,964 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 1608 transitions, 31654 flow [2023-11-10 12:37:48,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:48,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:48,964 INFO L208 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] [2023-11-10 12:37:48,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-10 12:37:49,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-10 12:37:49,169 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:49,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:49,169 INFO L85 PathProgramCache]: Analyzing trace with hash 461052627, now seen corresponding path program 10 times [2023-11-10 12:37:49,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:49,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443051580] [2023-11-10 12:37:49,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:49,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:49,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:49,283 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:49,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:49,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443051580] [2023-11-10 12:37:49,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443051580] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:49,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939966811] [2023-11-10 12:37:49,284 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:37:49,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:49,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:49,293 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) [2023-11-10 12:37:49,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-10 12:37:49,342 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:37:49,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:49,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:49,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:49,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:49,467 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:49,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939966811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:49,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:49,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-11-10 12:37:49,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382980270] [2023-11-10 12:37:49,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:49,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-10 12:37:49,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:49,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-10 12:37:49,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2023-11-10 12:37:49,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:49,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 1608 transitions, 31654 flow. Second operand has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:49,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:49,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:49,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:52,280 INFO L124 PetriNetUnfolderBase]: 1577/3779 cut-off events. [2023-11-10 12:37:52,281 INFO L125 PetriNetUnfolderBase]: For 148303/148303 co-relation queries the response was YES. [2023-11-10 12:37:52,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35243 conditions, 3779 events. 1577/3779 cut-off events. For 148303/148303 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 28288 event pairs, 11 based on Foata normal form. 48/3825 useless extension candidates. Maximal degree in co-relation 34791. Up to 734 conditions per place. [2023-11-10 12:37:52,342 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 350 selfloop transitions, 1487 changer transitions 3/1882 dead transitions. [2023-11-10 12:37:52,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 539 places, 1882 transitions, 40027 flow [2023-11-10 12:37:52,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-11-10 12:37:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2023-11-10 12:37:52,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 3817 transitions. [2023-11-10 12:37:52,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7229166666666667 [2023-11-10 12:37:52,346 INFO L72 ComplementDD]: Start complementDD. Operand 66 states and 3817 transitions. [2023-11-10 12:37:52,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 66 states and 3817 transitions. [2023-11-10 12:37:52,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:52,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 66 states and 3817 transitions. [2023-11-10 12:37:52,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 67 states, 66 states have (on average 57.833333333333336) internal successors, (3817), 66 states have internal predecessors, (3817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:52,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 67 states, 67 states have (on average 80.0) internal successors, (5360), 67 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:52,355 INFO L81 ComplementDD]: Finished complementDD. Result has 67 states, 67 states have (on average 80.0) internal successors, (5360), 67 states have internal predecessors, (5360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:52,355 INFO L175 Difference]: Start difference. First operand has 477 places, 1608 transitions, 31654 flow. Second operand 66 states and 3817 transitions. [2023-11-10 12:37:52,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 539 places, 1882 transitions, 40027 flow [2023-11-10 12:37:53,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 520 places, 1882 transitions, 39616 flow, removed 81 selfloop flow, removed 19 redundant places. [2023-11-10 12:37:53,458 INFO L231 Difference]: Finished difference. Result has 533 places, 1754 transitions, 39146 flow [2023-11-10 12:37:53,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=30861, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=66, PETRI_FLOW=39146, PETRI_PLACES=533, PETRI_TRANSITIONS=1754} [2023-11-10 12:37:53,459 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 463 predicate places. [2023-11-10 12:37:53,459 INFO L495 AbstractCegarLoop]: Abstraction has has 533 places, 1754 transitions, 39146 flow [2023-11-10 12:37:53,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:53,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:53,460 INFO L208 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] [2023-11-10 12:37:53,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-10 12:37:53,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-10 12:37:53,664 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:37:53,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:37:53,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1116676631, now seen corresponding path program 11 times [2023-11-10 12:37:53,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:37:53,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185639610] [2023-11-10 12:37:53,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:37:53,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:37:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:37:53,773 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:53,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:37:53,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185639610] [2023-11-10 12:37:53,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185639610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:37:53,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149682980] [2023-11-10 12:37:53,773 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:37:53,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:37:53,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:37:53,774 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) [2023-11-10 12:37:53,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-10 12:37:53,826 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-10 12:37:53,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:37:53,827 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:37:53,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:37:53,960 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:53,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:37:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:37:54,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149682980] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:37:54,063 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:37:54,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-11-10 12:37:54,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902594490] [2023-11-10 12:37:54,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:37:54,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-10 12:37:54,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:37:54,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-10 12:37:54,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-11-10 12:37:54,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:37:54,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 533 places, 1754 transitions, 39146 flow. Second operand has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:54,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:37:54,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:37:54,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:37:57,198 INFO L124 PetriNetUnfolderBase]: 2214/5252 cut-off events. [2023-11-10 12:37:57,198 INFO L125 PetriNetUnfolderBase]: For 368692/368692 co-relation queries the response was YES. [2023-11-10 12:37:57,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59554 conditions, 5252 events. 2214/5252 cut-off events. For 368692/368692 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 42233 event pairs, 86 based on Foata normal form. 9/5245 useless extension candidates. Maximal degree in co-relation 58972. Up to 2606 conditions per place. [2023-11-10 12:37:57,285 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 1450 selfloop transitions, 959 changer transitions 15/2466 dead transitions. [2023-11-10 12:37:57,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 576 places, 2466 transitions, 59950 flow [2023-11-10 12:37:57,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-10 12:37:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-10 12:37:57,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 2644 transitions. [2023-11-10 12:37:57,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7344444444444445 [2023-11-10 12:37:57,287 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 2644 transitions. [2023-11-10 12:37:57,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 2644 transitions. [2023-11-10 12:37:57,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:37:57,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 2644 transitions. [2023-11-10 12:37:57,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 58.75555555555555) internal successors, (2644), 45 states have internal predecessors, (2644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:57,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 80.0) internal successors, (3680), 46 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:57,293 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 80.0) internal successors, (3680), 46 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:57,293 INFO L175 Difference]: Start difference. First operand has 533 places, 1754 transitions, 39146 flow. Second operand 45 states and 2644 transitions. [2023-11-10 12:37:57,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 576 places, 2466 transitions, 59950 flow [2023-11-10 12:37:59,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 529 places, 2466 transitions, 58810 flow, removed 132 selfloop flow, removed 47 redundant places. [2023-11-10 12:37:59,793 INFO L231 Difference]: Finished difference. Result has 551 places, 2187 transitions, 51401 flow [2023-11-10 12:37:59,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=38210, PETRI_DIFFERENCE_MINUEND_PLACES=485, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=593, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1043, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=51401, PETRI_PLACES=551, PETRI_TRANSITIONS=2187} [2023-11-10 12:37:59,795 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 481 predicate places. [2023-11-10 12:37:59,795 INFO L495 AbstractCegarLoop]: Abstraction has has 551 places, 2187 transitions, 51401 flow [2023-11-10 12:37:59,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.391304347826086) internal successors, (1297), 23 states have internal predecessors, (1297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:37:59,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:37:59,796 INFO L208 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] [2023-11-10 12:37:59,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-10 12:38:00,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-10 12:38:00,000 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:38:00,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:38:00,001 INFO L85 PathProgramCache]: Analyzing trace with hash 95300245, now seen corresponding path program 12 times [2023-11-10 12:38:00,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:38:00,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884022113] [2023-11-10 12:38:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:38:00,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:38:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:38:00,115 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:38:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884022113] [2023-11-10 12:38:00,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884022113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:38:00,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1888845339] [2023-11-10 12:38:00,116 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:38:00,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:38:00,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:38:00,117 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) [2023-11-10 12:38:00,119 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-10 12:38:00,168 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-10 12:38:00,168 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:38:00,169 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-10 12:38:00,170 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:38:00,271 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:00,271 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:38:00,344 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:00,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1888845339] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:38:00,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:38:00,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 21 [2023-11-10 12:38:00,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321897980] [2023-11-10 12:38:00,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:38:00,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-10 12:38:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:38:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-10 12:38:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2023-11-10 12:38:00,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:38:00,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 551 places, 2187 transitions, 51401 flow. Second operand has 21 states, 21 states have (on average 57.0) internal successors, (1197), 21 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:00,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:38:00,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:38:00,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:38:05,209 INFO L124 PetriNetUnfolderBase]: 2736/6519 cut-off events. [2023-11-10 12:38:05,209 INFO L125 PetriNetUnfolderBase]: For 763674/763674 co-relation queries the response was YES. [2023-11-10 12:38:05,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80094 conditions, 6519 events. 2736/6519 cut-off events. For 763674/763674 co-relation queries the response was YES. Maximal size of possible extension queue 349. Compared 54329 event pairs, 133 based on Foata normal form. 138/6654 useless extension candidates. Maximal degree in co-relation 79196. Up to 2274 conditions per place. [2023-11-10 12:38:05,315 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 1214 selfloop transitions, 1729 changer transitions 22/3007 dead transitions. [2023-11-10 12:38:05,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 607 places, 3007 transitions, 75434 flow [2023-11-10 12:38:05,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2023-11-10 12:38:05,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2023-11-10 12:38:05,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 3400 transitions. [2023-11-10 12:38:05,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7327586206896551 [2023-11-10 12:38:05,318 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 3400 transitions. [2023-11-10 12:38:05,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 3400 transitions. [2023-11-10 12:38:05,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:38:05,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 3400 transitions. [2023-11-10 12:38:05,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 58.62068965517241) internal successors, (3400), 58 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:05,325 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 80.0) internal successors, (4720), 59 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:05,325 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 80.0) internal successors, (4720), 59 states have internal predecessors, (4720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:05,325 INFO L175 Difference]: Start difference. First operand has 551 places, 2187 transitions, 51401 flow. Second operand 58 states and 3400 transitions. [2023-11-10 12:38:05,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 607 places, 3007 transitions, 75434 flow [2023-11-10 12:38:09,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 3007 transitions, 73655 flow, removed 498 selfloop flow, removed 9 redundant places. [2023-11-10 12:38:09,918 INFO L231 Difference]: Finished difference. Result has 618 places, 2704 transitions, 69244 flow [2023-11-10 12:38:09,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=50032, PETRI_DIFFERENCE_MINUEND_PLACES=541, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=756, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=69244, PETRI_PLACES=618, PETRI_TRANSITIONS=2704} [2023-11-10 12:38:09,920 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 548 predicate places. [2023-11-10 12:38:09,920 INFO L495 AbstractCegarLoop]: Abstraction has has 618 places, 2704 transitions, 69244 flow [2023-11-10 12:38:09,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 57.0) internal successors, (1197), 21 states have internal predecessors, (1197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:09,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:38:09,920 INFO L208 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] [2023-11-10 12:38:09,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-11-10 12:38:10,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-10 12:38:10,125 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:38:10,125 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:38:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash -509991865, now seen corresponding path program 13 times [2023-11-10 12:38:10,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:38:10,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325019085] [2023-11-10 12:38:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:38:10,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:38:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:38:10,292 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:10,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:38:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325019085] [2023-11-10 12:38:10,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325019085] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:38:10,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541159358] [2023-11-10 12:38:10,293 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:38:10,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:38:10,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:38:10,294 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) [2023-11-10 12:38:10,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-10 12:38:10,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:38:10,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:38:10,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:38:10,470 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:10,470 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:38:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:10,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541159358] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:38:10,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:38:10,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:38:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868047055] [2023-11-10 12:38:10,581 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:38:10,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:38:10,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:38:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:38:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:38:10,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:38:10,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 618 places, 2704 transitions, 69244 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:10,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:38:10,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:38:10,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:38:16,202 INFO L124 PetriNetUnfolderBase]: 3048/7216 cut-off events. [2023-11-10 12:38:16,202 INFO L125 PetriNetUnfolderBase]: For 835405/835405 co-relation queries the response was YES. [2023-11-10 12:38:16,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98249 conditions, 7216 events. 3048/7216 cut-off events. For 835405/835405 co-relation queries the response was YES. Maximal size of possible extension queue 385. Compared 61259 event pairs, 162 based on Foata normal form. 1/7204 useless extension candidates. Maximal degree in co-relation 97283. Up to 4730 conditions per place. [2023-11-10 12:38:16,331 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2090 selfloop transitions, 921 changer transitions 6/3059 dead transitions. [2023-11-10 12:38:16,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 3059 transitions, 84492 flow [2023-11-10 12:38:16,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-10 12:38:16,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-10 12:38:16,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1573 transitions. [2023-11-10 12:38:16,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7282407407407407 [2023-11-10 12:38:16,333 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1573 transitions. [2023-11-10 12:38:16,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1573 transitions. [2023-11-10 12:38:16,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:38:16,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1573 transitions. [2023-11-10 12:38:16,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.25925925925926) internal successors, (1573), 27 states have internal predecessors, (1573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:16,337 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 80.0) internal successors, (2240), 28 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:16,337 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 80.0) internal successors, (2240), 28 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:16,337 INFO L175 Difference]: Start difference. First operand has 618 places, 2704 transitions, 69244 flow. Second operand 27 states and 1573 transitions. [2023-11-10 12:38:16,337 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 3059 transitions, 84492 flow [2023-11-10 12:38:21,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 622 places, 3059 transitions, 82649 flow, removed 73 selfloop flow, removed 22 redundant places. [2023-11-10 12:38:22,020 INFO L231 Difference]: Finished difference. Result has 634 places, 2879 transitions, 75260 flow [2023-11-10 12:38:22,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=67601, PETRI_DIFFERENCE_MINUEND_PLACES=596, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2704, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=746, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1842, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=75260, PETRI_PLACES=634, PETRI_TRANSITIONS=2879} [2023-11-10 12:38:22,022 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 564 predicate places. [2023-11-10 12:38:22,022 INFO L495 AbstractCegarLoop]: Abstraction has has 634 places, 2879 transitions, 75260 flow [2023-11-10 12:38:22,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:22,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:38:22,023 INFO L208 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] [2023-11-10 12:38:22,030 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-10 12:38:22,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:38:22,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:38:22,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:38:22,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1876368219, now seen corresponding path program 14 times [2023-11-10 12:38:22,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:38:22,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893788357] [2023-11-10 12:38:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:38:22,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:38:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:38:22,328 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:38:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893788357] [2023-11-10 12:38:22,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893788357] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:38:22,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001833393] [2023-11-10 12:38:22,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:38:22,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:38:22,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:38:22,329 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) [2023-11-10 12:38:22,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-10 12:38:22,408 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:38:22,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:38:22,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:38:22,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:38:22,527 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:22,528 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:38:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:22,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001833393] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:38:22,672 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:38:22,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:38:22,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997585689] [2023-11-10 12:38:22,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:38:22,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:38:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:38:22,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:38:22,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:38:22,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:38:22,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 634 places, 2879 transitions, 75260 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:22,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:38:22,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:38:22,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:38:31,301 INFO L124 PetriNetUnfolderBase]: 3853/9064 cut-off events. [2023-11-10 12:38:31,302 INFO L125 PetriNetUnfolderBase]: For 1135648/1135648 co-relation queries the response was YES. [2023-11-10 12:38:31,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128550 conditions, 9064 events. 3853/9064 cut-off events. For 1135648/1135648 co-relation queries the response was YES. Maximal size of possible extension queue 480. Compared 80132 event pairs, 171 based on Foata normal form. 6/9053 useless extension candidates. Maximal degree in co-relation 127614. Up to 4325 conditions per place. [2023-11-10 12:38:31,486 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2098 selfloop transitions, 1794 changer transitions 4/3938 dead transitions. [2023-11-10 12:38:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 690 places, 3938 transitions, 111931 flow [2023-11-10 12:38:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-10 12:38:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-10 12:38:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3478 transitions. [2023-11-10 12:38:31,489 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7245833333333334 [2023-11-10 12:38:31,489 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3478 transitions. [2023-11-10 12:38:31,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3478 transitions. [2023-11-10 12:38:31,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:38:31,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3478 transitions. [2023-11-10 12:38:31,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 57.96666666666667) internal successors, (3478), 60 states have internal predecessors, (3478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:31,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 80.0) internal successors, (4880), 61 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:31,496 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 80.0) internal successors, (4880), 61 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:31,496 INFO L175 Difference]: Start difference. First operand has 634 places, 2879 transitions, 75260 flow. Second operand 60 states and 3478 transitions. [2023-11-10 12:38:31,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 690 places, 3938 transitions, 111931 flow [2023-11-10 12:38:40,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 3938 transitions, 111844 flow, removed 11 selfloop flow, removed 11 redundant places. [2023-11-10 12:38:40,819 INFO L231 Difference]: Finished difference. Result has 706 places, 3563 transitions, 102332 flow [2023-11-10 12:38:40,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=75175, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2879, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=102332, PETRI_PLACES=706, PETRI_TRANSITIONS=3563} [2023-11-10 12:38:40,821 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 636 predicate places. [2023-11-10 12:38:40,822 INFO L495 AbstractCegarLoop]: Abstraction has has 706 places, 3563 transitions, 102332 flow [2023-11-10 12:38:40,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:40,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:38:40,822 INFO L208 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] [2023-11-10 12:38:40,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-10 12:38:41,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-10 12:38:41,028 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:38:41,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:38:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1867859921, now seen corresponding path program 15 times [2023-11-10 12:38:41,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:38:41,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273881485] [2023-11-10 12:38:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:38:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:38:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:38:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:41,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:38:41,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273881485] [2023-11-10 12:38:41,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273881485] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:38:41,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283421346] [2023-11-10 12:38:41,121 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:38:41,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:38:41,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:38:41,122 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) [2023-11-10 12:38:41,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-10 12:38:41,184 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-10 12:38:41,184 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:38:41,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:38:41,186 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:38:41,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:41,302 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:38:41,409 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:38:41,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283421346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:38:41,410 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:38:41,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:38:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154804464] [2023-11-10 12:38:41,410 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:38:41,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:38:41,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:38:41,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:38:41,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:38:41,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:38:41,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 706 places, 3563 transitions, 102332 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:41,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:38:41,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:38:41,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:38:51,258 INFO L124 PetriNetUnfolderBase]: 3852/9008 cut-off events. [2023-11-10 12:38:51,259 INFO L125 PetriNetUnfolderBase]: For 1285551/1285551 co-relation queries the response was YES. [2023-11-10 12:38:51,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136262 conditions, 9008 events. 3852/9008 cut-off events. For 1285551/1285551 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 79135 event pairs, 219 based on Foata normal form. 1/8993 useless extension candidates. Maximal degree in co-relation 135881. Up to 6537 conditions per place. [2023-11-10 12:38:51,448 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2532 selfloop transitions, 1014 changer transitions 5/3593 dead transitions. [2023-11-10 12:38:51,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 3593 transitions, 110401 flow [2023-11-10 12:38:51,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-10 12:38:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-10 12:38:51,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1045 transitions. [2023-11-10 12:38:51,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7256944444444444 [2023-11-10 12:38:51,457 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1045 transitions. [2023-11-10 12:38:51,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1045 transitions. [2023-11-10 12:38:51,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:38:51,458 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1045 transitions. [2023-11-10 12:38:51,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.05555555555556) internal successors, (1045), 18 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:51,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:51,479 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:38:51,479 INFO L175 Difference]: Start difference. First operand has 706 places, 3563 transitions, 102332 flow. Second operand 18 states and 1045 transitions. [2023-11-10 12:38:51,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 3593 transitions, 110401 flow [2023-11-10 12:39:03,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 3593 transitions, 109790 flow, removed 256 selfloop flow, removed 16 redundant places. [2023-11-10 12:39:03,258 INFO L231 Difference]: Finished difference. Result has 709 places, 3568 transitions, 104560 flow [2023-11-10 12:39:03,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=101721, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1009, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2553, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=104560, PETRI_PLACES=709, PETRI_TRANSITIONS=3568} [2023-11-10 12:39:03,261 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 639 predicate places. [2023-11-10 12:39:03,261 INFO L495 AbstractCegarLoop]: Abstraction has has 709 places, 3568 transitions, 104560 flow [2023-11-10 12:39:03,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:03,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:39:03,261 INFO L208 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] [2023-11-10 12:39:03,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-10 12:39:03,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-10 12:39:03,467 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:39:03,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:39:03,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1536267193, now seen corresponding path program 16 times [2023-11-10 12:39:03,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:39:03,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058970572] [2023-11-10 12:39:03,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:39:03,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:39:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:39:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:03,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:39:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058970572] [2023-11-10 12:39:03,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058970572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:39:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904009268] [2023-11-10 12:39:03,556 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:39:03,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:39:03,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:39:03,557 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) [2023-11-10 12:39:03,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-10 12:39:03,612 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:39:03,612 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:39:03,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:39:03,614 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:39:03,754 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:03,754 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:39:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:03,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904009268] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:39:03,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:39:03,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 23 [2023-11-10 12:39:03,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531756276] [2023-11-10 12:39:03,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:39:03,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-10 12:39:03,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:39:03,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-10 12:39:03,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2023-11-10 12:39:03,894 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:39:03,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 709 places, 3568 transitions, 104560 flow. Second operand has 23 states, 23 states have (on average 56.69565217391305) internal successors, (1304), 23 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:03,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:39:03,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:39:03,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:39:16,068 INFO L124 PetriNetUnfolderBase]: 3867/9151 cut-off events. [2023-11-10 12:39:16,068 INFO L125 PetriNetUnfolderBase]: For 1359170/1359170 co-relation queries the response was YES. [2023-11-10 12:39:16,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140503 conditions, 9151 events. 3867/9151 cut-off events. For 1359170/1359170 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 80988 event pairs, 135 based on Foata normal form. 80/9228 useless extension candidates. Maximal degree in co-relation 140286. Up to 1959 conditions per place. [2023-11-10 12:39:16,265 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 1062 selfloop transitions, 2840 changer transitions 4/3948 dead transitions. [2023-11-10 12:39:16,265 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 757 places, 3948 transitions, 122772 flow [2023-11-10 12:39:16,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2023-11-10 12:39:16,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2023-11-10 12:39:16,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 3500 transitions. [2023-11-10 12:39:16,268 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2023-11-10 12:39:16,268 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 3500 transitions. [2023-11-10 12:39:16,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 3500 transitions. [2023-11-10 12:39:16,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:39:16,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 3500 transitions. [2023-11-10 12:39:16,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 58.333333333333336) internal successors, (3500), 60 states have internal predecessors, (3500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:16,274 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 80.0) internal successors, (4880), 61 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:16,274 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 80.0) internal successors, (4880), 61 states have internal predecessors, (4880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:16,274 INFO L175 Difference]: Start difference. First operand has 709 places, 3568 transitions, 104560 flow. Second operand 60 states and 3500 transitions. [2023-11-10 12:39:16,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 757 places, 3948 transitions, 122772 flow [2023-11-10 12:39:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 3948 transitions, 121216 flow, removed 30 selfloop flow, removed 14 redundant places. [2023-11-10 12:39:28,475 INFO L231 Difference]: Finished difference. Result has 754 places, 3778 transitions, 118499 flow [2023-11-10 12:39:28,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=102045, PETRI_DIFFERENCE_MINUEND_PLACES=684, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2607, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=118499, PETRI_PLACES=754, PETRI_TRANSITIONS=3778} [2023-11-10 12:39:28,478 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 684 predicate places. [2023-11-10 12:39:28,478 INFO L495 AbstractCegarLoop]: Abstraction has has 754 places, 3778 transitions, 118499 flow [2023-11-10 12:39:28,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 56.69565217391305) internal successors, (1304), 23 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:28,479 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:39:28,479 INFO L208 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] [2023-11-10 12:39:28,483 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2023-11-10 12:39:28,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:39:28,683 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:39:28,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:39:28,684 INFO L85 PathProgramCache]: Analyzing trace with hash 560169797, now seen corresponding path program 17 times [2023-11-10 12:39:28,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:39:28,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286361402] [2023-11-10 12:39:28,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:39:28,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:39:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:39:28,793 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:28,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:39:28,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286361402] [2023-11-10 12:39:28,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286361402] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:39:28,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891469703] [2023-11-10 12:39:28,794 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:39:28,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:39:28,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:39:28,795 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) [2023-11-10 12:39:28,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-10 12:39:28,853 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-10 12:39:28,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:39:28,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-10 12:39:28,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:39:29,026 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:29,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:39:29,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:29,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891469703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:39:29,166 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:39:29,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 26 [2023-11-10 12:39:29,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028455724] [2023-11-10 12:39:29,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:39:29,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-10 12:39:29,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:39:29,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-10 12:39:29,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-11-10 12:39:29,170 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:39:29,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 754 places, 3778 transitions, 118499 flow. Second operand has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:29,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:39:29,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:39:29,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:39:40,813 INFO L124 PetriNetUnfolderBase]: 4214/9912 cut-off events. [2023-11-10 12:39:40,813 INFO L125 PetriNetUnfolderBase]: For 1913711/1913711 co-relation queries the response was YES. [2023-11-10 12:39:40,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159423 conditions, 9912 events. 4214/9912 cut-off events. For 1913711/1913711 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 88372 event pairs, 238 based on Foata normal form. 154/10063 useless extension candidates. Maximal degree in co-relation 159200. Up to 4297 conditions per place. [2023-11-10 12:39:41,028 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 1867 selfloop transitions, 2486 changer transitions 8/4403 dead transitions. [2023-11-10 12:39:41,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 788 places, 4403 transitions, 144062 flow [2023-11-10 12:39:41,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-10 12:39:41,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-10 12:39:41,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2148 transitions. [2023-11-10 12:39:41,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7458333333333333 [2023-11-10 12:39:41,030 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2148 transitions. [2023-11-10 12:39:41,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2148 transitions. [2023-11-10 12:39:41,030 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:39:41,030 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2148 transitions. [2023-11-10 12:39:41,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 59.666666666666664) internal successors, (2148), 36 states have internal predecessors, (2148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:41,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:41,034 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:41,034 INFO L175 Difference]: Start difference. First operand has 754 places, 3778 transitions, 118499 flow. Second operand 36 states and 2148 transitions. [2023-11-10 12:39:41,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 788 places, 4403 transitions, 144062 flow [2023-11-10 12:39:54,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 755 places, 4403 transitions, 143336 flow, removed 73 selfloop flow, removed 33 redundant places. [2023-11-10 12:39:54,490 INFO L231 Difference]: Finished difference. Result has 781 places, 4137 transitions, 138542 flow [2023-11-10 12:39:54,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=117778, PETRI_DIFFERENCE_MINUEND_PLACES=720, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3778, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1531, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=138542, PETRI_PLACES=781, PETRI_TRANSITIONS=4137} [2023-11-10 12:39:54,493 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 711 predicate places. [2023-11-10 12:39:54,493 INFO L495 AbstractCegarLoop]: Abstraction has has 781 places, 4137 transitions, 138542 flow [2023-11-10 12:39:54,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 56.73076923076923) internal successors, (1475), 26 states have internal predecessors, (1475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:54,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:39:54,493 INFO L208 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] [2023-11-10 12:39:54,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-10 12:39:54,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:39:54,697 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:39:54,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:39:54,698 INFO L85 PathProgramCache]: Analyzing trace with hash 588673533, now seen corresponding path program 18 times [2023-11-10 12:39:54,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:39:54,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288049928] [2023-11-10 12:39:54,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:39:54,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:39:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:39:54,784 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:54,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:39:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288049928] [2023-11-10 12:39:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288049928] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:39:54,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1025164518] [2023-11-10 12:39:54,784 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:39:54,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:39:54,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:39:54,785 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:39:54,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-10 12:39:54,854 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-10 12:39:54,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:39:54,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:39:54,855 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:39:54,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:54,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:39:55,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:39:55,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1025164518] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:39:55,065 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:39:55,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:39:55,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778974566] [2023-11-10 12:39:55,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:39:55,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:39:55,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:39:55,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:39:55,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=454, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:39:55,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:39:55,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 781 places, 4137 transitions, 138542 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:39:55,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:39:55,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:39:55,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:40:10,446 INFO L124 PetriNetUnfolderBase]: 4435/10403 cut-off events. [2023-11-10 12:40:10,446 INFO L125 PetriNetUnfolderBase]: For 2324507/2324507 co-relation queries the response was YES. [2023-11-10 12:40:10,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185835 conditions, 10403 events. 4435/10403 cut-off events. For 2324507/2324507 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 93444 event pairs, 219 based on Foata normal form. 4/10391 useless extension candidates. Maximal degree in co-relation 185588. Up to 6208 conditions per place. [2023-11-10 12:40:10,823 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2871 selfloop transitions, 1556 changer transitions 6/4475 dead transitions. [2023-11-10 12:40:10,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 817 places, 4475 transitions, 158146 flow [2023-11-10 12:40:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-10 12:40:10,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-10 12:40:10,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2150 transitions. [2023-11-10 12:40:10,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7263513513513513 [2023-11-10 12:40:10,826 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2150 transitions. [2023-11-10 12:40:10,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2150 transitions. [2023-11-10 12:40:10,826 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:40:10,826 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2150 transitions. [2023-11-10 12:40:10,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 58.108108108108105) internal successors, (2150), 37 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:10,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 80.0) internal successors, (3040), 38 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:10,831 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 80.0) internal successors, (3040), 38 states have internal predecessors, (3040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:10,831 INFO L175 Difference]: Start difference. First operand has 781 places, 4137 transitions, 138542 flow. Second operand 37 states and 2150 transitions. [2023-11-10 12:40:10,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 817 places, 4475 transitions, 158146 flow [2023-11-10 12:40:28,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 812 places, 4475 transitions, 157566 flow, removed 278 selfloop flow, removed 5 redundant places. [2023-11-10 12:40:28,440 INFO L231 Difference]: Finished difference. Result has 825 places, 4289 transitions, 149089 flow [2023-11-10 12:40:28,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=137972, PETRI_DIFFERENCE_MINUEND_PLACES=776, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1413, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2649, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=149089, PETRI_PLACES=825, PETRI_TRANSITIONS=4289} [2023-11-10 12:40:28,444 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 755 predicate places. [2023-11-10 12:40:28,444 INFO L495 AbstractCegarLoop]: Abstraction has has 825 places, 4289 transitions, 149089 flow [2023-11-10 12:40:28,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:28,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:40:28,444 INFO L208 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] [2023-11-10 12:40:28,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-10 12:40:28,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:40:28,649 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:40:28,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:40:28,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1032078483, now seen corresponding path program 19 times [2023-11-10 12:40:28,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:40:28,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49830113] [2023-11-10 12:40:28,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:40:28,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:40:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:40:28,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:40:28,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:40:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49830113] [2023-11-10 12:40:28,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49830113] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:40:28,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914712477] [2023-11-10 12:40:28,735 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:40:28,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:40:28,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:40:28,736 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:40:28,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-10 12:40:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:40:28,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:40:28,797 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:40:28,919 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:40:28,919 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:40:29,018 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:40:29,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914712477] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:40:29,019 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:40:29,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:40:29,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690586030] [2023-11-10 12:40:29,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:40:29,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:40:29,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:40:29,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:40:29,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:40:29,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:40:29,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 825 places, 4289 transitions, 149089 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:29,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:40:29,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:40:29,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:40:49,523 INFO L124 PetriNetUnfolderBase]: 4664/11033 cut-off events. [2023-11-10 12:40:49,524 INFO L125 PetriNetUnfolderBase]: For 2678299/2678299 co-relation queries the response was YES. [2023-11-10 12:40:49,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 203340 conditions, 11033 events. 4664/11033 cut-off events. For 2678299/2678299 co-relation queries the response was YES. Maximal size of possible extension queue 564. Compared 100776 event pairs, 197 based on Foata normal form. 7/11022 useless extension candidates. Maximal degree in co-relation 203083. Up to 4548 conditions per place. [2023-11-10 12:40:49,791 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2285 selfloop transitions, 2320 changer transitions 7/4654 dead transitions. [2023-11-10 12:40:49,792 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 863 places, 4654 transitions, 170583 flow [2023-11-10 12:40:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-11-10 12:40:49,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-11-10 12:40:49,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 2510 transitions. [2023-11-10 12:40:49,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7296511627906976 [2023-11-10 12:40:49,794 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 2510 transitions. [2023-11-10 12:40:49,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 2510 transitions. [2023-11-10 12:40:49,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:40:49,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 2510 transitions. [2023-11-10 12:40:49,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 58.372093023255815) internal successors, (2510), 43 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:49,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 80.0) internal successors, (3520), 44 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:49,798 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 80.0) internal successors, (3520), 44 states have internal predecessors, (3520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:40:49,798 INFO L175 Difference]: Start difference. First operand has 825 places, 4289 transitions, 149089 flow. Second operand 43 states and 2510 transitions. [2023-11-10 12:40:49,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 863 places, 4654 transitions, 170583 flow [2023-11-10 12:41:10,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 4654 transitions, 169852 flow, removed 295 selfloop flow, removed 14 redundant places. [2023-11-10 12:41:10,731 INFO L231 Difference]: Finished difference. Result has 862 places, 4457 transitions, 162419 flow [2023-11-10 12:41:10,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=148530, PETRI_DIFFERENCE_MINUEND_PLACES=807, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4289, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2013, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=162419, PETRI_PLACES=862, PETRI_TRANSITIONS=4457} [2023-11-10 12:41:10,735 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 792 predicate places. [2023-11-10 12:41:10,735 INFO L495 AbstractCegarLoop]: Abstraction has has 862 places, 4457 transitions, 162419 flow [2023-11-10 12:41:10,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:10,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:41:10,735 INFO L208 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] [2023-11-10 12:41:10,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-11-10 12:41:10,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-10 12:41:10,939 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:41:10,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:41:10,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1255715483, now seen corresponding path program 20 times [2023-11-10 12:41:10,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:41:10,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261204512] [2023-11-10 12:41:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:41:10,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:41:10,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:41:11,023 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:41:11,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:41:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261204512] [2023-11-10 12:41:11,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261204512] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:41:11,023 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794956565] [2023-11-10 12:41:11,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-10 12:41:11,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:41:11,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:41:11,024 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:41:11,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-10 12:41:11,114 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:41:11,114 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:41:11,115 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:41:11,116 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:41:11,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:41:11,235 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:41:11,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:41:11,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1794956565] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:41:11,333 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:41:11,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:41:11,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789751030] [2023-11-10 12:41:11,333 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:41:11,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:41:11,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:41:11,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:41:11,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:41:11,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:41:11,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 862 places, 4457 transitions, 162419 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:11,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:41:11,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:41:11,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:41:29,215 INFO L124 PetriNetUnfolderBase]: 4659/10950 cut-off events. [2023-11-10 12:41:29,215 INFO L125 PetriNetUnfolderBase]: For 2779515/2779515 co-relation queries the response was YES. [2023-11-10 12:41:29,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208416 conditions, 10950 events. 4659/10950 cut-off events. For 2779515/2779515 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 99396 event pairs, 227 based on Foata normal form. 1/10936 useless extension candidates. Maximal degree in co-relation 208148. Up to 7895 conditions per place. [2023-11-10 12:41:29,605 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 3159 selfloop transitions, 1276 changer transitions 4/4481 dead transitions. [2023-11-10 12:41:29,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 876 places, 4481 transitions, 172321 flow [2023-11-10 12:41:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-10 12:41:29,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-10 12:41:29,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1045 transitions. [2023-11-10 12:41:29,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7256944444444444 [2023-11-10 12:41:29,607 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1045 transitions. [2023-11-10 12:41:29,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1045 transitions. [2023-11-10 12:41:29,607 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:41:29,607 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1045 transitions. [2023-11-10 12:41:29,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.05555555555556) internal successors, (1045), 18 states have internal predecessors, (1045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:29,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:29,609 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:29,609 INFO L175 Difference]: Start difference. First operand has 862 places, 4457 transitions, 162419 flow. Second operand 18 states and 1045 transitions. [2023-11-10 12:41:29,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 876 places, 4481 transitions, 172321 flow [2023-11-10 12:41:59,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 861 places, 4481 transitions, 171649 flow, removed 215 selfloop flow, removed 15 redundant places. [2023-11-10 12:41:59,689 INFO L231 Difference]: Finished difference. Result has 865 places, 4457 transitions, 164324 flow [2023-11-10 12:41:59,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=161751, PETRI_DIFFERENCE_MINUEND_PLACES=844, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1276, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=164324, PETRI_PLACES=865, PETRI_TRANSITIONS=4457} [2023-11-10 12:41:59,693 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 795 predicate places. [2023-11-10 12:41:59,693 INFO L495 AbstractCegarLoop]: Abstraction has has 865 places, 4457 transitions, 164324 flow [2023-11-10 12:41:59,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:41:59,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:41:59,694 INFO L208 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] [2023-11-10 12:41:59,698 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-11-10 12:41:59,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-10 12:41:59,898 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:41:59,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:41:59,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1882206619, now seen corresponding path program 21 times [2023-11-10 12:41:59,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:41:59,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567837070] [2023-11-10 12:41:59,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:41:59,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:41:59,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:41:59,982 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:41:59,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:41:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567837070] [2023-11-10 12:41:59,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567837070] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:41:59,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088791414] [2023-11-10 12:41:59,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-10 12:41:59,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:41:59,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:41:59,999 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:42:00,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-10 12:42:00,067 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-10 12:42:00,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:42:00,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:42:00,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:42:00,183 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:42:00,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:42:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:42:00,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088791414] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:42:00,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:42:00,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:42:00,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381168769] [2023-11-10 12:42:00,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:42:00,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:42:00,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:42:00,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:42:00,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:42:00,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:42:00,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 865 places, 4457 transitions, 164324 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:00,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:42:00,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:42:00,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:42:19,268 INFO L124 PetriNetUnfolderBase]: 4808/11265 cut-off events. [2023-11-10 12:42:19,268 INFO L125 PetriNetUnfolderBase]: For 2968784/2968784 co-relation queries the response was YES. [2023-11-10 12:42:19,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217717 conditions, 11265 events. 4808/11265 cut-off events. For 2968784/2968784 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 102767 event pairs, 225 based on Foata normal form. 8/11261 useless extension candidates. Maximal degree in co-relation 217448. Up to 7538 conditions per place. [2023-11-10 12:42:19,724 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 3116 selfloop transitions, 1524 changer transitions 5/4687 dead transitions. [2023-11-10 12:42:19,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 892 places, 4687 transitions, 181716 flow [2023-11-10 12:42:19,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-10 12:42:19,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-10 12:42:19,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1859 transitions. [2023-11-10 12:42:19,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.726171875 [2023-11-10 12:42:19,726 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1859 transitions. [2023-11-10 12:42:19,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1859 transitions. [2023-11-10 12:42:19,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:42:19,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1859 transitions. [2023-11-10 12:42:19,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 58.09375) internal successors, (1859), 32 states have internal predecessors, (1859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:19,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 80.0) internal successors, (2640), 33 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:19,729 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 80.0) internal successors, (2640), 33 states have internal predecessors, (2640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:19,729 INFO L175 Difference]: Start difference. First operand has 865 places, 4457 transitions, 164324 flow. Second operand 32 states and 1859 transitions. [2023-11-10 12:42:19,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 892 places, 4687 transitions, 181716 flow [2023-11-10 12:42:48,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 4687 transitions, 180124 flow, removed 21 selfloop flow, removed 15 redundant places. [2023-11-10 12:42:48,645 INFO L231 Difference]: Finished difference. Result has 887 places, 4581 transitions, 173141 flow [2023-11-10 12:42:48,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=162795, PETRI_DIFFERENCE_MINUEND_PLACES=846, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1422, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2982, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=173141, PETRI_PLACES=887, PETRI_TRANSITIONS=4581} [2023-11-10 12:42:48,648 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 817 predicate places. [2023-11-10 12:42:48,648 INFO L495 AbstractCegarLoop]: Abstraction has has 887 places, 4581 transitions, 173141 flow [2023-11-10 12:42:48,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:48,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:42:48,649 INFO L208 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] [2023-11-10 12:42:48,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-10 12:42:48,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:42:48,853 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:42:48,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:42:48,853 INFO L85 PathProgramCache]: Analyzing trace with hash -821902207, now seen corresponding path program 22 times [2023-11-10 12:42:48,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:42:48,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789863123] [2023-11-10 12:42:48,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:42:48,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:42:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:42:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:42:48,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:42:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789863123] [2023-11-10 12:42:48,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789863123] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:42:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [648247302] [2023-11-10 12:42:48,940 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-10 12:42:48,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:42:48,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:42:48,966 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:42:48,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-10 12:42:49,025 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-10 12:42:49,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:42:49,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:42:49,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:42:49,148 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:42:49,148 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:42:49,234 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:42:49,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [648247302] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:42:49,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:42:49,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2023-11-10 12:42:49,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328676003] [2023-11-10 12:42:49,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:42:49,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:42:49,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:42:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:42:49,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:42:49,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:42:49,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 887 places, 4581 transitions, 173141 flow. Second operand has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:42:49,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:42:49,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:42:49,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:43:12,859 INFO L124 PetriNetUnfolderBase]: 4906/11438 cut-off events. [2023-11-10 12:43:12,860 INFO L125 PetriNetUnfolderBase]: For 2962195/2962195 co-relation queries the response was YES. [2023-11-10 12:43:13,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224537 conditions, 11438 events. 4906/11438 cut-off events. For 2962195/2962195 co-relation queries the response was YES. Maximal size of possible extension queue 567. Compared 103578 event pairs, 251 based on Foata normal form. 4/11431 useless extension candidates. Maximal degree in co-relation 224263. Up to 7637 conditions per place. [2023-11-10 12:43:13,334 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 3156 selfloop transitions, 1596 changer transitions 8/4802 dead transitions. [2023-11-10 12:43:13,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 910 places, 4802 transitions, 190809 flow [2023-11-10 12:43:13,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-10 12:43:13,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-10 12:43:13,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1583 transitions. [2023-11-10 12:43:13,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7328703703703704 [2023-11-10 12:43:13,336 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1583 transitions. [2023-11-10 12:43:13,336 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1583 transitions. [2023-11-10 12:43:13,336 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:43:13,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1583 transitions. [2023-11-10 12:43:13,338 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 58.629629629629626) internal successors, (1583), 27 states have internal predecessors, (1583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:43:13,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 80.0) internal successors, (2240), 28 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:43:13,339 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 80.0) internal successors, (2240), 28 states have internal predecessors, (2240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:43:13,339 INFO L175 Difference]: Start difference. First operand has 887 places, 4581 transitions, 173141 flow. Second operand 27 states and 1583 transitions. [2023-11-10 12:43:13,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 910 places, 4802 transitions, 190809 flow [2023-11-10 12:43:50,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 894 places, 4802 transitions, 186423 flow, removed 1025 selfloop flow, removed 16 redundant places. [2023-11-10 12:43:50,952 INFO L231 Difference]: Finished difference. Result has 904 places, 4694 transitions, 179309 flow [2023-11-10 12:43:50,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=169329, PETRI_DIFFERENCE_MINUEND_PLACES=868, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4581, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1490, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=179309, PETRI_PLACES=904, PETRI_TRANSITIONS=4694} [2023-11-10 12:43:50,956 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 834 predicate places. [2023-11-10 12:43:50,956 INFO L495 AbstractCegarLoop]: Abstraction has has 904 places, 4694 transitions, 179309 flow [2023-11-10 12:43:50,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 56.5) internal successors, (1243), 22 states have internal predecessors, (1243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:43:50,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:43:50,957 INFO L208 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] [2023-11-10 12:43:50,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2023-11-10 12:43:51,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:43:51,161 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:43:51,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:43:51,161 INFO L85 PathProgramCache]: Analyzing trace with hash -918220757, now seen corresponding path program 23 times [2023-11-10 12:43:51,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:43:51,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698339197] [2023-11-10 12:43:51,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:43:51,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:43:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:43:51,249 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:43:51,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:43:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698339197] [2023-11-10 12:43:51,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698339197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:43:51,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28015627] [2023-11-10 12:43:51,249 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-10 12:43:51,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:43:51,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:43:51,251 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:43:51,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-10 12:43:51,313 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-10 12:43:51,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:43:51,314 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:43:51,315 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:43:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:43:51,431 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:43:51,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:43:51,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28015627] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:43:51,524 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:43:51,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:43:51,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602799515] [2023-11-10 12:43:51,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:43:51,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:43:51,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:43:51,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:43:51,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:43:51,526 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:43:51,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 904 places, 4694 transitions, 179309 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:43:51,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:43:51,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:43:51,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:44:16,497 INFO L124 PetriNetUnfolderBase]: 5294/12445 cut-off events. [2023-11-10 12:44:16,497 INFO L125 PetriNetUnfolderBase]: For 2273653/2273653 co-relation queries the response was YES. [2023-11-10 12:44:16,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230277 conditions, 12445 events. 5294/12445 cut-off events. For 2273653/2273653 co-relation queries the response was YES. Maximal size of possible extension queue 616. Compared 115363 event pairs, 232 based on Foata normal form. 12/12446 useless extension candidates. Maximal degree in co-relation 229998. Up to 7507 conditions per place. [2023-11-10 12:44:16,856 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 3199 selfloop transitions, 1970 changer transitions 16/5227 dead transitions. [2023-11-10 12:44:16,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 942 places, 5227 transitions, 208428 flow [2023-11-10 12:44:16,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-10 12:44:16,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-10 12:44:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2388 transitions. [2023-11-10 12:44:16,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7280487804878049 [2023-11-10 12:44:16,859 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2388 transitions. [2023-11-10 12:44:16,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2388 transitions. [2023-11-10 12:44:16,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:44:16,859 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2388 transitions. [2023-11-10 12:44:16,861 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 58.24390243902439) internal successors, (2388), 41 states have internal predecessors, (2388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:44:16,863 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 80.0) internal successors, (3360), 42 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:44:16,863 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 80.0) internal successors, (3360), 42 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:44:16,863 INFO L175 Difference]: Start difference. First operand has 904 places, 4694 transitions, 179309 flow. Second operand 41 states and 2388 transitions. [2023-11-10 12:44:16,863 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 942 places, 5227 transitions, 208428 flow [2023-11-10 12:44:44,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 5227 transitions, 206738 flow, removed 272 selfloop flow, removed 15 redundant places. [2023-11-10 12:44:44,574 INFO L231 Difference]: Finished difference. Result has 947 places, 4969 transitions, 196334 flow [2023-11-10 12:44:44,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=177778, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4694, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1748, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2865, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=196334, PETRI_PLACES=947, PETRI_TRANSITIONS=4969} [2023-11-10 12:44:44,578 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 877 predicate places. [2023-11-10 12:44:44,578 INFO L495 AbstractCegarLoop]: Abstraction has has 947 places, 4969 transitions, 196334 flow [2023-11-10 12:44:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:44:44,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:44:44,578 INFO L208 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] [2023-11-10 12:44:44,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-10 12:44:44,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-10 12:44:44,789 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:44:44,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:44:44,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1416464787, now seen corresponding path program 24 times [2023-11-10 12:44:44,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:44:44,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042823967] [2023-11-10 12:44:44,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:44:44,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:44:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:44:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:44:44,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:44:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042823967] [2023-11-10 12:44:44,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042823967] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:44:44,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320129360] [2023-11-10 12:44:44,879 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-10 12:44:44,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:44:44,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:44:44,880 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:44:44,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-10 12:44:44,941 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-10 12:44:44,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-10 12:44:44,942 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:44:44,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:44:45,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:44:45,080 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:44:45,169 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-10 12:44:45,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [320129360] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:44:45,169 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:44:45,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 8] total 22 [2023-11-10 12:44:45,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032523590] [2023-11-10 12:44:45,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:44:45,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-10 12:44:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:44:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-10 12:44:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2023-11-10 12:44:45,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:44:45,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 947 places, 4969 transitions, 196334 flow. Second operand has 22 states, 22 states have (on average 56.81818181818182) internal successors, (1250), 22 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:44:45,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:44:45,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:44:45,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:45:12,099 INFO L124 PetriNetUnfolderBase]: 5422/12733 cut-off events. [2023-11-10 12:45:12,100 INFO L125 PetriNetUnfolderBase]: For 2524153/2524153 co-relation queries the response was YES. [2023-11-10 12:45:12,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242227 conditions, 12733 events. 5422/12733 cut-off events. For 2524153/2524153 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 118265 event pairs, 186 based on Foata normal form. 73/12803 useless extension candidates. Maximal degree in co-relation 241930. Up to 5925 conditions per place. [2023-11-10 12:45:12,580 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 2301 selfloop transitions, 2938 changer transitions 4/5285 dead transitions. [2023-11-10 12:45:12,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 978 places, 5285 transitions, 216764 flow [2023-11-10 12:45:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-10 12:45:12,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-11-10 12:45:12,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2109 transitions. [2023-11-10 12:45:12,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7322916666666667 [2023-11-10 12:45:12,601 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2109 transitions. [2023-11-10 12:45:12,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2109 transitions. [2023-11-10 12:45:12,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:45:12,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2109 transitions. [2023-11-10 12:45:12,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 58.583333333333336) internal successors, (2109), 36 states have internal predecessors, (2109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:45:12,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:45:12,605 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 80.0) internal successors, (2960), 37 states have internal predecessors, (2960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:45:12,605 INFO L175 Difference]: Start difference. First operand has 947 places, 4969 transitions, 196334 flow. Second operand 36 states and 2109 transitions. [2023-11-10 12:45:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 978 places, 5285 transitions, 216764 flow [2023-11-10 12:45:45,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 959 places, 5285 transitions, 214108 flow, removed 973 selfloop flow, removed 19 redundant places. [2023-11-10 12:45:45,787 INFO L231 Difference]: Finished difference. Result has 970 places, 5129 transitions, 211425 flow [2023-11-10 12:45:45,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=80, PETRI_DIFFERENCE_MINUEND_FLOW=193206, PETRI_DIFFERENCE_MINUEND_PLACES=924, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4953, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2768, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2092, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=211425, PETRI_PLACES=970, PETRI_TRANSITIONS=5129} [2023-11-10 12:45:45,790 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 900 predicate places. [2023-11-10 12:45:45,790 INFO L495 AbstractCegarLoop]: Abstraction has has 970 places, 5129 transitions, 211425 flow [2023-11-10 12:45:45,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 56.81818181818182) internal successors, (1250), 22 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:45:45,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 12:45:45,791 INFO L208 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] [2023-11-10 12:45:45,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-10 12:45:45,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-10 12:45:45,995 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-10 12:45:45,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 12:45:45,996 INFO L85 PathProgramCache]: Analyzing trace with hash 695615977, now seen corresponding path program 25 times [2023-11-10 12:45:45,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 12:45:45,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046064148] [2023-11-10 12:45:45,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 12:45:45,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 12:45:46,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:45:46,137 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:45:46,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 12:45:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046064148] [2023-11-10 12:45:46,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046064148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-10 12:45:46,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307107423] [2023-11-10 12:45:46,137 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-10 12:45:46,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-10 12:45:46,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 12:45:46,139 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-10 12:45:46,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-10 12:45:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 12:45:46,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-10 12:45:46,206 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-10 12:45:46,322 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:45:46,322 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-10 12:45:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 12:45:46,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307107423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-10 12:45:46,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-10 12:45:46,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 24 [2023-11-10 12:45:46,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944721639] [2023-11-10 12:45:46,420 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-10 12:45:46,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-10 12:45:46,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 12:45:46,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-10 12:45:46,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=448, Unknown=0, NotChecked=0, Total=552 [2023-11-10 12:45:46,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 80 [2023-11-10 12:45:46,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 970 places, 5129 transitions, 211425 flow. Second operand has 24 states, 24 states have (on average 56.333333333333336) internal successors, (1352), 24 states have internal predecessors, (1352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:45:46,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 12:45:46,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 80 [2023-11-10 12:45:46,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 12:46:21,274 INFO L124 PetriNetUnfolderBase]: 5419/12728 cut-off events. [2023-11-10 12:46:21,274 INFO L125 PetriNetUnfolderBase]: For 2096524/2096524 co-relation queries the response was YES. [2023-11-10 12:46:21,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243808 conditions, 12728 events. 5419/12728 cut-off events. For 2096524/2096524 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 118080 event pairs, 233 based on Foata normal form. 1/12719 useless extension candidates. Maximal degree in co-relation 243504. Up to 8836 conditions per place. [2023-11-10 12:46:21,659 INFO L140 encePairwiseOnDemand]: 67/80 looper letters, 3551 selfloop transitions, 1558 changer transitions 4/5155 dead transitions. [2023-11-10 12:46:21,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 987 places, 5155 transitions, 222170 flow [2023-11-10 12:46:21,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-10 12:46:21,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-10 12:46:21,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1043 transitions. [2023-11-10 12:46:21,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7243055555555555 [2023-11-10 12:46:21,661 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1043 transitions. [2023-11-10 12:46:21,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1043 transitions. [2023-11-10 12:46:21,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 12:46:21,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1043 transitions. [2023-11-10 12:46:21,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 57.94444444444444) internal successors, (1043), 18 states have internal predecessors, (1043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:46:21,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:46:21,663 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 80.0) internal successors, (1520), 19 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 12:46:21,663 INFO L175 Difference]: Start difference. First operand has 970 places, 5129 transitions, 211425 flow. Second operand 18 states and 1043 transitions. [2023-11-10 12:46:21,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 987 places, 5155 transitions, 222170 flow Received shutdown request... [2023-11-10 12:46:38,923 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-10 12:46:38,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-10 12:46:38,956 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-10 12:46:38,956 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-10 12:46:39,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-10 12:46:39,128 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-10 12:46:39,130 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-10 12:46:39,130 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-10 12:46:39,131 INFO L445 BasicCegarLoop]: Path program histogram: [25, 2, 1] [2023-11-10 12:46:39,133 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 12:46:39,133 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 12:46:39,136 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 12:46:39 BasicIcfg [2023-11-10 12:46:39,136 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 12:46:39,137 INFO L158 Benchmark]: Toolchain (without parser) took 551155.13ms. Allocated memory was 280.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 227.7MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 3.0GB. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.94ms. Allocated memory is still 280.0MB. Free memory was 227.2MB in the beginning and 216.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.94ms. Allocated memory is still 280.0MB. Free memory was 216.2MB in the beginning and 214.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: Boogie Preprocessor took 15.52ms. Allocated memory is still 280.0MB. Free memory was 214.6MB in the beginning and 213.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: RCFGBuilder took 255.29ms. Allocated memory is still 280.0MB. Free memory was 213.6MB in the beginning and 197.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-11-10 12:46:39,137 INFO L158 Benchmark]: TraceAbstraction took 550632.33ms. Allocated memory was 280.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 197.3MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. [2023-11-10 12:46:39,138 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 184.5MB. Free memory is still 140.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 216.94ms. Allocated memory is still 280.0MB. Free memory was 227.2MB in the beginning and 216.2MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 28.94ms. Allocated memory is still 280.0MB. Free memory was 216.2MB in the beginning and 214.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.52ms. Allocated memory is still 280.0MB. Free memory was 214.6MB in the beginning and 213.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 255.29ms. Allocated memory is still 280.0MB. Free memory was 213.6MB in the beginning and 197.8MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * TraceAbstraction took 550632.33ms. Allocated memory was 280.0MB in the beginning and 4.2GB in the end (delta: 3.9GB). Free memory was 197.3MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 2.9GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 93 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: 550.5s, OverallIterations: 28, TraceHistogramMax: 2, PathProgramHistogramMax: 25, EmptinessCheckTime: 0.0s, AutomataDifference: 533.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3486 SdHoareTripleChecker+Valid, 5.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3486 mSDsluCounter, 3594 SdHoareTripleChecker+Invalid, 4.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2998 mSDsCounter, 834 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14374 IncrementalHoareTripleChecker+Invalid, 15208 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 834 mSolverCounterUnsat, 596 mSDtfsCounter, 14374 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4432 GetRequests, 3115 SyntacticMatches, 24 SemanticMatches, 1293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22732 ImplicationChecksByTransitivity, 11.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=211425occurred in iteration=27, InterpolantAutomatonStates: 996, 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, 9.5s InterpolantComputationTime, 3619 NumberOfCodeBlocks, 3575 NumberOfCodeBlocksAsserted, 82 NumberOfCheckSat, 5230 ConstructedInterpolants, 0 QuantifiedInterpolants, 16071 SizeOfPredicates, 226 NumberOfNonLiveVariables, 3788 ConjunctsInSsa, 230 ConjunctsInUnsatCore, 79 InterpolantComputations, 3 PerfectInterpolantSequences, 308/567 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