/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 01:01:58,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 01:01:58,563 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-VariableLbe.epf [2023-08-24 01:01:58,569 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 01:01:58,570 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 01:01:58,603 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 01:01:58,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 01:01:58,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 01:01:58,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 01:01:58,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 01:01:58,607 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 01:01:58,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 01:01:58,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 01:01:58,609 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 01:01:58,609 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 01:01:58,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 01:01:58,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 01:01:58,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 01:01:58,610 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 01:01:58,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 01:01:58,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 01:01:58,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 01:01:58,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 01:01:58,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 01:01:58,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 01:01:58,611 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 01:01:58,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 01:01:58,611 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:01:58,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 01:01:58,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 01:01:58,612 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 01:01:58,612 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 01:01:58,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 01:01:58,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 01:01:58,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 01:01:58,613 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 01:01:58,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 01:01:58,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 01:01:58,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 01:01:58,865 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 01:01:58,866 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 01:01:58,867 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-24 01:01:59,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 01:02:00,059 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 01:02:00,060 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-subst.wvr.c [2023-08-24 01:02:00,065 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f3adde0/742e624ffe0844d293bd00743fd415cf/FLAG7c183dc6f [2023-08-24 01:02:00,074 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9f3adde0/742e624ffe0844d293bd00743fd415cf [2023-08-24 01:02:00,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 01:02:00,076 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 01:02:00,077 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 01:02:00,077 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 01:02:00,079 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 01:02:00,079 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,080 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c398ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00, skipping insertion in model container [2023-08-24 01:02:00,080 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,099 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 01:02:00,239 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/chl-node-subst.wvr.c[3996,4009] [2023-08-24 01:02:00,247 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:02:00,253 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 01:02:00,271 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/chl-node-subst.wvr.c[3996,4009] [2023-08-24 01:02:00,275 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 01:02:00,285 INFO L206 MainTranslator]: Completed translation [2023-08-24 01:02:00,285 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00 WrapperNode [2023-08-24 01:02:00,285 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 01:02:00,286 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 01:02:00,286 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 01:02:00,286 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 01:02:00,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,297 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,320 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 437 [2023-08-24 01:02:00,320 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 01:02:00,321 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 01:02:00,321 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 01:02:00,321 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 01:02:00,327 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,337 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,338 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,359 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,363 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,364 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,365 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,368 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 01:02:00,368 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 01:02:00,369 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 01:02:00,369 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 01:02:00,369 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (1/1) ... [2023-08-24 01:02:00,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 01:02:00,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:02:00,407 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) [2023-08-24 01:02:00,427 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 [2023-08-24 01:02:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 01:02:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 01:02:00,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 01:02:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 01:02:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 01:02:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 01:02:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 01:02:00,436 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 01:02:00,436 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 01:02:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 01:02:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 01:02:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 01:02:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 01:02:00,437 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 01:02:00,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 01:02:00,438 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 01:02:00,563 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 01:02:00,565 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 01:02:01,028 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 01:02:01,038 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 01:02:01,038 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 01:02:01,039 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:02:01 BoogieIcfgContainer [2023-08-24 01:02:01,039 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 01:02:01,041 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 01:02:01,041 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 01:02:01,043 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 01:02:01,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 01:02:00" (1/3) ... [2023-08-24 01:02:01,043 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c51d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:02:01, skipping insertion in model container [2023-08-24 01:02:01,043 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 01:02:00" (2/3) ... [2023-08-24 01:02:01,044 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c51d96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 01:02:01, skipping insertion in model container [2023-08-24 01:02:01,044 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 01:02:01" (3/3) ... [2023-08-24 01:02:01,044 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-subst.wvr.c [2023-08-24 01:02:01,054 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 01:02:01,055 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 01:02:01,055 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 01:02:01,125 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 01:02:01,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 476 places, 507 transitions, 1038 flow [2023-08-24 01:02:01,283 INFO L124 PetriNetUnfolderBase]: 41/504 cut-off events. [2023-08-24 01:02:01,284 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:02:01,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 517 conditions, 504 events. 41/504 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 640 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 430. Up to 2 conditions per place. [2023-08-24 01:02:01,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 476 places, 507 transitions, 1038 flow [2023-08-24 01:02:01,299 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 463 places, 494 transitions, 1006 flow [2023-08-24 01:02:01,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 01:02:01,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 463 places, 494 transitions, 1006 flow [2023-08-24 01:02:01,310 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 463 places, 494 transitions, 1006 flow [2023-08-24 01:02:01,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 494 transitions, 1006 flow [2023-08-24 01:02:01,394 INFO L124 PetriNetUnfolderBase]: 41/494 cut-off events. [2023-08-24 01:02:01,394 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:02:01,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 507 conditions, 494 events. 41/494 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 640 event pairs, 0 based on Foata normal form. 0/453 useless extension candidates. Maximal degree in co-relation 430. Up to 2 conditions per place. [2023-08-24 01:02:01,405 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-24 01:02:15,178 INFO L134 LiptonReduction]: Checked pairs total: 20163 [2023-08-24 01:02:15,178 INFO L136 LiptonReduction]: Total number of compositions: 588 [2023-08-24 01:02:15,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 01:02:15,192 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=LoopsAndPotentialCycles, 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;@1c13aa13, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 01:02:15,192 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 01:02:15,197 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 01:02:15,197 INFO L124 PetriNetUnfolderBase]: 10/41 cut-off events. [2023-08-24 01:02:15,197 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 01:02:15,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:15,198 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] [2023-08-24 01:02:15,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:15,201 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:15,201 INFO L85 PathProgramCache]: Analyzing trace with hash -70421863, now seen corresponding path program 1 times [2023-08-24 01:02:15,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:15,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362099447] [2023-08-24 01:02:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:15,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:15,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:02:15,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:15,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362099447] [2023-08-24 01:02:15,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362099447] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:15,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:15,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:15,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926019670] [2023-08-24 01:02:15,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:15,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:02:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:15,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:02:15,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:02:15,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1095 [2023-08-24 01:02:15,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:15,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1095 [2023-08-24 01:02:15,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:15,752 INFO L124 PetriNetUnfolderBase]: 835/1228 cut-off events. [2023-08-24 01:02:15,752 INFO L125 PetriNetUnfolderBase]: For 92/92 co-relation queries the response was YES. [2023-08-24 01:02:15,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2608 conditions, 1228 events. 835/1228 cut-off events. For 92/92 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4580 event pairs, 477 based on Foata normal form. 0/1030 useless extension candidates. Maximal degree in co-relation 2392. Up to 913 conditions per place. [2023-08-24 01:02:15,758 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 54 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-24 01:02:15,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 57 transitions, 252 flow [2023-08-24 01:02:15,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:02:15,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:02:15,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1450 transitions. [2023-08-24 01:02:15,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2023-08-24 01:02:15,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1450 transitions. [2023-08-24 01:02:15,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1450 transitions. [2023-08-24 01:02:15,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:15,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1450 transitions. [2023-08-24 01:02:15,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,794 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,795 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 3 states and 1450 transitions. [2023-08-24 01:02:15,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 57 transitions, 252 flow [2023-08-24 01:02:15,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 57 transitions, 236 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 01:02:15,801 INFO L231 Difference]: Finished difference. Result has 40 places, 43 transitions, 108 flow [2023-08-24 01:02:15,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=40, PETRI_TRANSITIONS=43} [2023-08-24 01:02:15,804 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -2 predicate places. [2023-08-24 01:02:15,804 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 43 transitions, 108 flow [2023-08-24 01:02:15,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.3333333333333) internal successors, (1420), 3 states have internal predecessors, (1420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:15,805 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] [2023-08-24 01:02:15,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 01:02:15,806 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:15,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:15,807 INFO L85 PathProgramCache]: Analyzing trace with hash 638957695, now seen corresponding path program 1 times [2023-08-24 01:02:15,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:15,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372192370] [2023-08-24 01:02:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:15,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:15,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:02:15,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:15,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372192370] [2023-08-24 01:02:15,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372192370] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:15,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:15,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:15,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686890463] [2023-08-24 01:02:15,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:15,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:02:15,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:15,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:02:15,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:02:15,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 464 out of 1095 [2023-08-24 01:02:15,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 43 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 473.6666666666667) internal successors, (1421), 3 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:15,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:15,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 464 of 1095 [2023-08-24 01:02:15,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:16,107 INFO L124 PetriNetUnfolderBase]: 943/1388 cut-off events. [2023-08-24 01:02:16,107 INFO L125 PetriNetUnfolderBase]: For 478/478 co-relation queries the response was YES. [2023-08-24 01:02:16,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 1388 events. 943/1388 cut-off events. For 478/478 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5195 event pairs, 541 based on Foata normal form. 0/1278 useless extension candidates. Maximal degree in co-relation 1664. Up to 1017 conditions per place. [2023-08-24 01:02:16,113 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 56 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-24 01:02:16,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 59 transitions, 276 flow [2023-08-24 01:02:16,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:02:16,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:02:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1450 transitions. [2023-08-24 01:02:16,116 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.441400304414003 [2023-08-24 01:02:16,116 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1450 transitions. [2023-08-24 01:02:16,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1450 transitions. [2023-08-24 01:02:16,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:16,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1450 transitions. [2023-08-24 01:02:16,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,158 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,158 INFO L175 Difference]: Start difference. First operand has 40 places, 43 transitions, 108 flow. Second operand 3 states and 1450 transitions. [2023-08-24 01:02:16,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 59 transitions, 276 flow [2023-08-24 01:02:16,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:16,161 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 120 flow [2023-08-24 01:02:16,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2023-08-24 01:02:16,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-24 01:02:16,162 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 120 flow [2023-08-24 01:02:16,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 473.6666666666667) internal successors, (1421), 3 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:16,163 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] [2023-08-24 01:02:16,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 01:02:16,163 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:16,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:16,164 INFO L85 PathProgramCache]: Analyzing trace with hash 245389524, now seen corresponding path program 1 times [2023-08-24 01:02:16,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:16,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630597457] [2023-08-24 01:02:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:16,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:16,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 01:02:16,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:16,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630597457] [2023-08-24 01:02:16,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630597457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:16,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:16,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 01:02:16,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816093779] [2023-08-24 01:02:16,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:16,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 01:02:16,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:16,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 01:02:16,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 01:02:16,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 1095 [2023-08-24 01:02:16,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:16,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 1095 [2023-08-24 01:02:16,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:16,500 INFO L124 PetriNetUnfolderBase]: 943/1389 cut-off events. [2023-08-24 01:02:16,500 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-08-24 01:02:16,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3522 conditions, 1389 events. 943/1389 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5054 event pairs, 733 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 2229. Up to 1389 conditions per place. [2023-08-24 01:02:16,505 INFO L140 encePairwiseOnDemand]: 1092/1095 looper letters, 43 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-24 01:02:16,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 45 transitions, 212 flow [2023-08-24 01:02:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 01:02:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 01:02:16,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1349 transitions. [2023-08-24 01:02:16,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106544901065449 [2023-08-24 01:02:16,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1349 transitions. [2023-08-24 01:02:16,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1349 transitions. [2023-08-24 01:02:16,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:16,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1349 transitions. [2023-08-24 01:02:16,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.6666666666667) internal successors, (1349), 3 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,516 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,517 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1095.0) internal successors, (4380), 4 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,517 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 120 flow. Second operand 3 states and 1349 transitions. [2023-08-24 01:02:16,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 45 transitions, 212 flow [2023-08-24 01:02:16,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 45 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:16,523 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 126 flow [2023-08-24 01:02:16,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-08-24 01:02:16,524 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 1 predicate places. [2023-08-24 01:02:16,527 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 126 flow [2023-08-24 01:02:16,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 445.0) internal successors, (1335), 3 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:16,528 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] [2023-08-24 01:02:16,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 01:02:16,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:16,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:16,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1284413496, now seen corresponding path program 1 times [2023-08-24 01:02:16,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:16,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386909015] [2023-08-24 01:02:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:16,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:16,659 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 01:02:16,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:16,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386909015] [2023-08-24 01:02:16,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386909015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:16,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:16,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:16,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077502638] [2023-08-24 01:02:16,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:16,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:16,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:16,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:16,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1095 [2023-08-24 01:02:16,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 126 flow. Second operand has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:16,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1095 [2023-08-24 01:02:16,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:16,826 INFO L124 PetriNetUnfolderBase]: 943/1390 cut-off events. [2023-08-24 01:02:16,826 INFO L125 PetriNetUnfolderBase]: For 256/256 co-relation queries the response was YES. [2023-08-24 01:02:16,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3374 conditions, 1390 events. 943/1390 cut-off events. For 256/256 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5054 event pairs, 733 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2023-08-24 01:02:16,833 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-24 01:02:16,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 220 flow [2023-08-24 01:02:16,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:02:16,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:02:16,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1736 transitions. [2023-08-24 01:02:16,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963470319634703 [2023-08-24 01:02:16,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1736 transitions. [2023-08-24 01:02:16,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1736 transitions. [2023-08-24 01:02:16,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:16,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1736 transitions. [2023-08-24 01:02:16,842 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 434.0) internal successors, (1736), 4 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,848 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,848 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 126 flow. Second operand 4 states and 1736 transitions. [2023-08-24 01:02:16,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 220 flow [2023-08-24 01:02:16,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 216 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 01:02:16,851 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 136 flow [2023-08-24 01:02:16,851 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-24 01:02:16,851 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 4 predicate places. [2023-08-24 01:02:16,851 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 136 flow [2023-08-24 01:02:16,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 430.75) internal successors, (1723), 4 states have internal predecessors, (1723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,852 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:16,852 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] [2023-08-24 01:02:16,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 01:02:16,853 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:16,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:16,853 INFO L85 PathProgramCache]: Analyzing trace with hash -429662275, now seen corresponding path program 1 times [2023-08-24 01:02:16,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:16,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504358665] [2023-08-24 01:02:16,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:16,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:16,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 01:02:16,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:16,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504358665] [2023-08-24 01:02:16,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504358665] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:16,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:16,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:16,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759040527] [2023-08-24 01:02:16,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:16,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:16,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:16,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:16,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:16,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1095 [2023-08-24 01:02:16,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:16,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:16,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1095 [2023-08-24 01:02:16,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:17,104 INFO L124 PetriNetUnfolderBase]: 943/1391 cut-off events. [2023-08-24 01:02:17,108 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-08-24 01:02:17,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3381 conditions, 1391 events. 943/1391 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5047 event pairs, 733 based on Foata normal form. 0/1284 useless extension candidates. Maximal degree in co-relation 3361. Up to 1389 conditions per place. [2023-08-24 01:02:17,114 INFO L140 encePairwiseOnDemand]: 1090/1095 looper letters, 43 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-08-24 01:02:17,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 232 flow [2023-08-24 01:02:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:02:17,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:02:17,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1737 transitions. [2023-08-24 01:02:17,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39657534246575343 [2023-08-24 01:02:17,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1737 transitions. [2023-08-24 01:02:17,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1737 transitions. [2023-08-24 01:02:17,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:17,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1737 transitions. [2023-08-24 01:02:17,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,129 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,129 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 136 flow. Second operand 4 states and 1737 transitions. [2023-08-24 01:02:17,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 232 flow [2023-08-24 01:02:17,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 47 transitions, 226 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:17,133 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 148 flow [2023-08-24 01:02:17,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=148, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-24 01:02:17,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 6 predicate places. [2023-08-24 01:02:17,135 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 148 flow [2023-08-24 01:02:17,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:17,136 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] [2023-08-24 01:02:17,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 01:02:17,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:17,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1383967621, now seen corresponding path program 1 times [2023-08-24 01:02:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935440208] [2023-08-24 01:02:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:17,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:17,248 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 01:02:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:17,248 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935440208] [2023-08-24 01:02:17,248 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935440208] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:17,248 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:17,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:17,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72272205] [2023-08-24 01:02:17,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:17,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:17,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:17,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:17,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 01:02:17,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:17,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 01:02:17,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:17,423 INFO L124 PetriNetUnfolderBase]: 943/1392 cut-off events. [2023-08-24 01:02:17,423 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2023-08-24 01:02:17,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3389 conditions, 1392 events. 943/1392 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5047 event pairs, 733 based on Foata normal form. 0/1286 useless extension candidates. Maximal degree in co-relation 3366. Up to 1391 conditions per place. [2023-08-24 01:02:17,429 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-24 01:02:17,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 48 transitions, 246 flow [2023-08-24 01:02:17,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:02:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:02:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 01:02:17,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 01:02:17,433 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 01:02:17,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 01:02:17,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:17,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 01:02:17,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,441 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 148 flow. Second operand 4 states and 1748 transitions. [2023-08-24 01:02:17,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 48 transitions, 246 flow [2023-08-24 01:02:17,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 48 transitions, 242 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:17,443 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 158 flow [2023-08-24 01:02:17,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-24 01:02:17,444 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 8 predicate places. [2023-08-24 01:02:17,444 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 158 flow [2023-08-24 01:02:17,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.25) internal successors, (1737), 4 states have internal predecessors, (1737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:17,445 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] [2023-08-24 01:02:17,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 01:02:17,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:17,445 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:17,446 INFO L85 PathProgramCache]: Analyzing trace with hash 2129030687, now seen corresponding path program 1 times [2023-08-24 01:02:17,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:17,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310894191] [2023-08-24 01:02:17,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:17,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:17,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:17,636 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 01:02:17,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310894191] [2023-08-24 01:02:17,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310894191] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 01:02:17,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367855652] [2023-08-24 01:02:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:17,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:02:17,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 01:02:17,638 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) [2023-08-24 01:02:17,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 01:02:17,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:17,780 INFO L262 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 01:02:17,785 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 01:02:17,837 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-24 01:02:17,837 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 01:02:17,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367855652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:17,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 01:02:17,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-24 01:02:17,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202618487] [2023-08-24 01:02:17,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:17,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:17,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:17,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:17,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-24 01:02:17,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 01:02:17,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 434.5) internal successors, (1738), 4 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:17,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:17,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 01:02:17,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:18,021 INFO L124 PetriNetUnfolderBase]: 943/1393 cut-off events. [2023-08-24 01:02:18,021 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-08-24 01:02:18,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3396 conditions, 1393 events. 943/1393 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5060 event pairs, 733 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3372. Up to 1392 conditions per place. [2023-08-24 01:02:18,026 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 46 selfloop transitions, 3 changer transitions 0/49 dead transitions. [2023-08-24 01:02:18,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 49 transitions, 258 flow [2023-08-24 01:02:18,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:02:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:02:18,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 01:02:18,030 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 01:02:18,030 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:18,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,045 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,045 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 158 flow. Second operand 4 states and 1748 transitions. [2023-08-24 01:02:18,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 49 transitions, 258 flow [2023-08-24 01:02:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 49 transitions, 252 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:18,047 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 166 flow [2023-08-24 01:02:18,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-24 01:02:18,048 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 10 predicate places. [2023-08-24 01:02:18,048 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 166 flow [2023-08-24 01:02:18,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.5) internal successors, (1738), 4 states have internal predecessors, (1738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:18,048 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] [2023-08-24 01:02:18,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 01:02:18,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 01:02:18,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:18,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:18,255 INFO L85 PathProgramCache]: Analyzing trace with hash -617936083, now seen corresponding path program 1 times [2023-08-24 01:02:18,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:18,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199131983] [2023-08-24 01:02:18,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:18,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:18,413 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 01:02:18,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:18,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199131983] [2023-08-24 01:02:18,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199131983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:18,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:18,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 01:02:18,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513444559] [2023-08-24 01:02:18,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:18,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:18,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:18,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:18,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:18,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 426 out of 1095 [2023-08-24 01:02:18,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:18,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 426 of 1095 [2023-08-24 01:02:18,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:18,589 INFO L124 PetriNetUnfolderBase]: 943/1394 cut-off events. [2023-08-24 01:02:18,589 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2023-08-24 01:02:18,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3402 conditions, 1394 events. 943/1394 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5048 event pairs, 733 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 3377. Up to 1393 conditions per place. [2023-08-24 01:02:18,595 INFO L140 encePairwiseOnDemand]: 1091/1095 looper letters, 47 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-24 01:02:18,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 50 transitions, 268 flow [2023-08-24 01:02:18,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 01:02:18,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 01:02:18,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1748 transitions. [2023-08-24 01:02:18,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39908675799086757 [2023-08-24 01:02:18,599 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:18,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1748 transitions. [2023-08-24 01:02:18,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 437.0) internal successors, (1748), 4 states have internal predecessors, (1748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,606 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1095.0) internal successors, (5475), 5 states have internal predecessors, (5475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,606 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 166 flow. Second operand 4 states and 1748 transitions. [2023-08-24 01:02:18,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 50 transitions, 268 flow [2023-08-24 01:02:18,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 262 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:18,608 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 174 flow [2023-08-24 01:02:18,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=174, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-24 01:02:18,609 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 12 predicate places. [2023-08-24 01:02:18,609 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 174 flow [2023-08-24 01:02:18,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 434.75) internal successors, (1739), 4 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:18,609 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] [2023-08-24 01:02:18,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 01:02:18,609 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:18,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:18,610 INFO L85 PathProgramCache]: Analyzing trace with hash 439792446, now seen corresponding path program 1 times [2023-08-24 01:02:18,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:18,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093453159] [2023-08-24 01:02:18,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:18,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:18,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:18,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:18,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093453159] [2023-08-24 01:02:18,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093453159] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:02:18,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554423313] [2023-08-24 01:02:18,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:18,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:18,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:18,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:18,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:18,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 1095 [2023-08-24 01:02:18,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 174 flow. Second operand has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:18,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:18,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 1095 [2023-08-24 01:02:18,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:19,281 INFO L124 PetriNetUnfolderBase]: 1580/2407 cut-off events. [2023-08-24 01:02:19,282 INFO L125 PetriNetUnfolderBase]: For 505/505 co-relation queries the response was YES. [2023-08-24 01:02:19,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5926 conditions, 2407 events. 1580/2407 cut-off events. For 505/505 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 10940 event pairs, 576 based on Foata normal form. 41/2301 useless extension candidates. Maximal degree in co-relation 5900. Up to 1210 conditions per place. [2023-08-24 01:02:19,290 INFO L140 encePairwiseOnDemand]: 1088/1095 looper letters, 101 selfloop transitions, 9 changer transitions 1/111 dead transitions. [2023-08-24 01:02:19,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 111 transitions, 571 flow [2023-08-24 01:02:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:02:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:02:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2248 transitions. [2023-08-24 01:02:19,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4105936073059361 [2023-08-24 01:02:19,294 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2248 transitions. [2023-08-24 01:02:19,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2248 transitions. [2023-08-24 01:02:19,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:19,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2248 transitions. [2023-08-24 01:02:19,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 449.6) internal successors, (2248), 5 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:19,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:19,303 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:19,303 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 174 flow. Second operand 5 states and 2248 transitions. [2023-08-24 01:02:19,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 111 transitions, 571 flow [2023-08-24 01:02:19,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 111 transitions, 565 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:19,308 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 248 flow [2023-08-24 01:02:19,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-24 01:02:19,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 18 predicate places. [2023-08-24 01:02:19,309 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 248 flow [2023-08-24 01:02:19,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:19,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:19,310 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] [2023-08-24 01:02:19,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 01:02:19,310 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:19,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:19,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1603584644, now seen corresponding path program 2 times [2023-08-24 01:02:19,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:19,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009836855] [2023-08-24 01:02:19,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:19,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:19,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:19,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:19,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009836855] [2023-08-24 01:02:19,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009836855] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:19,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:19,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 01:02:19,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136516197] [2023-08-24 01:02:19,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:19,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 01:02:19,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:19,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 01:02:19,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 01:02:19,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 429 out of 1095 [2023-08-24 01:02:19,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:19,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:19,535 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 429 of 1095 [2023-08-24 01:02:19,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:19,978 INFO L124 PetriNetUnfolderBase]: 2070/3161 cut-off events. [2023-08-24 01:02:19,978 INFO L125 PetriNetUnfolderBase]: For 2734/2734 co-relation queries the response was YES. [2023-08-24 01:02:19,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9112 conditions, 3161 events. 2070/3161 cut-off events. For 2734/2734 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15541 event pairs, 738 based on Foata normal form. 18/2949 useless extension candidates. Maximal degree in co-relation 9084. Up to 1958 conditions per place. [2023-08-24 01:02:19,994 INFO L140 encePairwiseOnDemand]: 1088/1095 looper letters, 101 selfloop transitions, 14 changer transitions 0/115 dead transitions. [2023-08-24 01:02:19,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 115 transitions, 676 flow [2023-08-24 01:02:19,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:02:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 01:02:19,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2239 transitions. [2023-08-24 01:02:19,999 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4089497716894977 [2023-08-24 01:02:19,999 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2239 transitions. [2023-08-24 01:02:19,999 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2239 transitions. [2023-08-24 01:02:20,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:20,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2239 transitions. [2023-08-24 01:02:20,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 447.8) internal successors, (2239), 5 states have internal predecessors, (2239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:20,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:20,009 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1095.0) internal successors, (6570), 6 states have internal predecessors, (6570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:20,009 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 248 flow. Second operand 5 states and 2239 transitions. [2023-08-24 01:02:20,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 115 transitions, 676 flow [2023-08-24 01:02:20,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 115 transitions, 668 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-24 01:02:20,019 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 357 flow [2023-08-24 01:02:20,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-24 01:02:20,020 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places. [2023-08-24 01:02:20,020 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 357 flow [2023-08-24 01:02:20,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 438.0) internal successors, (1752), 4 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:20,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:20,021 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] [2023-08-24 01:02:20,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 01:02:20,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:20,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:20,021 INFO L85 PathProgramCache]: Analyzing trace with hash 407750096, now seen corresponding path program 1 times [2023-08-24 01:02:20,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:20,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453482804] [2023-08-24 01:02:20,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:20,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:20,269 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:20,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:20,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453482804] [2023-08-24 01:02:20,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453482804] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:20,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:20,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:02:20,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014338136] [2023-08-24 01:02:20,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:20,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:02:20,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:20,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:02:20,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:02:20,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1095 [2023-08-24 01:02:20,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 357 flow. Second operand has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:20,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:20,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1095 [2023-08-24 01:02:20,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:21,037 INFO L124 PetriNetUnfolderBase]: 3204/4907 cut-off events. [2023-08-24 01:02:21,037 INFO L125 PetriNetUnfolderBase]: For 7599/7599 co-relation queries the response was YES. [2023-08-24 01:02:21,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15352 conditions, 4907 events. 3204/4907 cut-off events. For 7599/7599 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26712 event pairs, 1153 based on Foata normal form. 22/4745 useless extension candidates. Maximal degree in co-relation 15320. Up to 2716 conditions per place. [2023-08-24 01:02:21,058 INFO L140 encePairwiseOnDemand]: 1086/1095 looper letters, 145 selfloop transitions, 14 changer transitions 0/159 dead transitions. [2023-08-24 01:02:21,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 159 transitions, 1203 flow [2023-08-24 01:02:21,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 01:02:21,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 01:02:21,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2945 transitions. [2023-08-24 01:02:21,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842139595564253 [2023-08-24 01:02:21,064 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2945 transitions. [2023-08-24 01:02:21,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2945 transitions. [2023-08-24 01:02:21,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:21,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2945 transitions. [2023-08-24 01:02:21,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 420.7142857142857) internal successors, (2945), 7 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:21,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:21,078 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1095.0) internal successors, (8760), 8 states have internal predecessors, (8760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:21,078 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 357 flow. Second operand 7 states and 2945 transitions. [2023-08-24 01:02:21,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 159 transitions, 1203 flow [2023-08-24 01:02:21,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 159 transitions, 1187 flow, removed 8 selfloop flow, removed 0 redundant places. [2023-08-24 01:02:21,101 INFO L231 Difference]: Finished difference. Result has 76 places, 76 transitions, 442 flow [2023-08-24 01:02:21,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=353, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=76, PETRI_TRANSITIONS=76} [2023-08-24 01:02:21,102 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 34 predicate places. [2023-08-24 01:02:21,102 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 76 transitions, 442 flow [2023-08-24 01:02:21,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:21,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:21,103 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] [2023-08-24 01:02:21,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 01:02:21,103 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:21,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:21,103 INFO L85 PathProgramCache]: Analyzing trace with hash -1132387587, now seen corresponding path program 1 times [2023-08-24 01:02:21,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:21,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480170623] [2023-08-24 01:02:21,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:21,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:21,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:23,259 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:23,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:23,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480170623] [2023-08-24 01:02:23,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480170623] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:23,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:23,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-24 01:02:23,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683537631] [2023-08-24 01:02:23,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:23,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 01:02:23,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:23,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 01:02:23,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-08-24 01:02:23,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 1095 [2023-08-24 01:02:23,266 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 76 transitions, 442 flow. Second operand has 16 states, 16 states have (on average 353.25) internal successors, (5652), 16 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:23,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:23,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 1095 [2023-08-24 01:02:23,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:29,403 INFO L124 PetriNetUnfolderBase]: 10288/16473 cut-off events. [2023-08-24 01:02:29,403 INFO L125 PetriNetUnfolderBase]: For 34895/34895 co-relation queries the response was YES. [2023-08-24 01:02:29,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57682 conditions, 16473 events. 10288/16473 cut-off events. For 34895/34895 co-relation queries the response was YES. Maximal size of possible extension queue 1014. Compared 118120 event pairs, 1801 based on Foata normal form. 2/16474 useless extension candidates. Maximal degree in co-relation 57645. Up to 3928 conditions per place. [2023-08-24 01:02:29,487 INFO L140 encePairwiseOnDemand]: 1075/1095 looper letters, 382 selfloop transitions, 264 changer transitions 14/660 dead transitions. [2023-08-24 01:02:29,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 660 transitions, 5295 flow [2023-08-24 01:02:29,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-08-24 01:02:29,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-08-24 01:02:29,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 13780 transitions. [2023-08-24 01:02:29,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33117039173275653 [2023-08-24 01:02:29,505 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 13780 transitions. [2023-08-24 01:02:29,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 13780 transitions. [2023-08-24 01:02:29,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:29,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 13780 transitions. [2023-08-24 01:02:29,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 362.63157894736844) internal successors, (13780), 38 states have internal predecessors, (13780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:29,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 1095.0) internal successors, (42705), 39 states have internal predecessors, (42705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:29,561 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 1095.0) internal successors, (42705), 39 states have internal predecessors, (42705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:29,562 INFO L175 Difference]: Start difference. First operand has 76 places, 76 transitions, 442 flow. Second operand 38 states and 13780 transitions. [2023-08-24 01:02:29,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 660 transitions, 5295 flow [2023-08-24 01:02:29,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 660 transitions, 5292 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:29,787 INFO L231 Difference]: Finished difference. Result has 137 places, 362 transitions, 3730 flow [2023-08-24 01:02:29,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3730, PETRI_PLACES=137, PETRI_TRANSITIONS=362} [2023-08-24 01:02:29,787 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 95 predicate places. [2023-08-24 01:02:29,787 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 362 transitions, 3730 flow [2023-08-24 01:02:29,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 353.25) internal successors, (5652), 16 states have internal predecessors, (5652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:29,789 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:29,789 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] [2023-08-24 01:02:29,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 01:02:29,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:29,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:29,790 INFO L85 PathProgramCache]: Analyzing trace with hash -239115315, now seen corresponding path program 2 times [2023-08-24 01:02:29,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:29,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356216764] [2023-08-24 01:02:29,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:29,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:31,365 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:31,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:31,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356216764] [2023-08-24 01:02:31,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356216764] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:31,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:31,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 01:02:31,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440920400] [2023-08-24 01:02:31,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:31,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 01:02:31,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:31,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 01:02:31,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-08-24 01:02:31,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 380 out of 1095 [2023-08-24 01:02:31,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 362 transitions, 3730 flow. Second operand has 12 states, 12 states have (on average 383.0) internal successors, (4596), 12 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:31,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:31,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 380 of 1095 [2023-08-24 01:02:31,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:35,504 INFO L124 PetriNetUnfolderBase]: 13456/21694 cut-off events. [2023-08-24 01:02:35,504 INFO L125 PetriNetUnfolderBase]: For 220245/220245 co-relation queries the response was YES. [2023-08-24 01:02:35,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113579 conditions, 21694 events. 13456/21694 cut-off events. For 220245/220245 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 163101 event pairs, 3456 based on Foata normal form. 1/21694 useless extension candidates. Maximal degree in co-relation 113515. Up to 11098 conditions per place. [2023-08-24 01:02:35,649 INFO L140 encePairwiseOnDemand]: 1084/1095 looper letters, 481 selfloop transitions, 98 changer transitions 7/586 dead transitions. [2023-08-24 01:02:35,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 586 transitions, 7050 flow [2023-08-24 01:02:35,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 01:02:35,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 01:02:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4316 transitions. [2023-08-24 01:02:35,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3583229555832296 [2023-08-24 01:02:35,655 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4316 transitions. [2023-08-24 01:02:35,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4316 transitions. [2023-08-24 01:02:35,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:35,655 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4316 transitions. [2023-08-24 01:02:35,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 392.3636363636364) internal successors, (4316), 11 states have internal predecessors, (4316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:35,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1095.0) internal successors, (13140), 12 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:35,669 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1095.0) internal successors, (13140), 12 states have internal predecessors, (13140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:35,669 INFO L175 Difference]: Start difference. First operand has 137 places, 362 transitions, 3730 flow. Second operand 11 states and 4316 transitions. [2023-08-24 01:02:35,669 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 586 transitions, 7050 flow [2023-08-24 01:02:38,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 586 transitions, 6939 flow, removed 53 selfloop flow, removed 5 redundant places. [2023-08-24 01:02:38,148 INFO L231 Difference]: Finished difference. Result has 146 places, 383 transitions, 4189 flow [2023-08-24 01:02:38,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=3651, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=362, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=4189, PETRI_PLACES=146, PETRI_TRANSITIONS=383} [2023-08-24 01:02:38,149 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 104 predicate places. [2023-08-24 01:02:38,149 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 383 transitions, 4189 flow [2023-08-24 01:02:38,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 383.0) internal successors, (4596), 12 states have internal predecessors, (4596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:38,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:38,151 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] [2023-08-24 01:02:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 01:02:38,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:38,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:38,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1803316229, now seen corresponding path program 3 times [2023-08-24 01:02:38,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:38,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711093683] [2023-08-24 01:02:38,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:39,327 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:39,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711093683] [2023-08-24 01:02:39,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711093683] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:39,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:39,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 01:02:39,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740156399] [2023-08-24 01:02:39,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:39,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:02:39,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:39,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:02:39,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:02:39,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 1095 [2023-08-24 01:02:39,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 383 transitions, 4189 flow. Second operand has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:39,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:39,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 1095 [2023-08-24 01:02:39,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:44,033 INFO L124 PetriNetUnfolderBase]: 14763/24257 cut-off events. [2023-08-24 01:02:44,033 INFO L125 PetriNetUnfolderBase]: For 260091/260091 co-relation queries the response was YES. [2023-08-24 01:02:44,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131020 conditions, 24257 events. 14763/24257 cut-off events. For 260091/260091 co-relation queries the response was YES. Maximal size of possible extension queue 1518. Compared 190578 event pairs, 3478 based on Foata normal form. 1/24257 useless extension candidates. Maximal degree in co-relation 130952. Up to 12245 conditions per place. [2023-08-24 01:02:44,191 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 660 selfloop transitions, 31 changer transitions 7/698 dead transitions. [2023-08-24 01:02:44,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 698 transitions, 8880 flow [2023-08-24 01:02:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 01:02:44,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 01:02:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3668 transitions. [2023-08-24 01:02:44,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721968543886352 [2023-08-24 01:02:44,196 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3668 transitions. [2023-08-24 01:02:44,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3668 transitions. [2023-08-24 01:02:44,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:44,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3668 transitions. [2023-08-24 01:02:44,200 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 407.55555555555554) internal successors, (3668), 9 states have internal predecessors, (3668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:44,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1095.0) internal successors, (10950), 10 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:44,205 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1095.0) internal successors, (10950), 10 states have internal predecessors, (10950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:44,205 INFO L175 Difference]: Start difference. First operand has 146 places, 383 transitions, 4189 flow. Second operand 9 states and 3668 transitions. [2023-08-24 01:02:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 698 transitions, 8880 flow [2023-08-24 01:02:47,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 698 transitions, 8767 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-08-24 01:02:47,134 INFO L231 Difference]: Finished difference. Result has 155 places, 388 transitions, 4265 flow [2023-08-24 01:02:47,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=4108, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4265, PETRI_PLACES=155, PETRI_TRANSITIONS=388} [2023-08-24 01:02:47,135 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 113 predicate places. [2023-08-24 01:02:47,135 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 388 transitions, 4265 flow [2023-08-24 01:02:47,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:47,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:47,136 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] [2023-08-24 01:02:47,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 01:02:47,136 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:47,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:47,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1002542507, now seen corresponding path program 4 times [2023-08-24 01:02:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:47,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318186306] [2023-08-24 01:02:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:47,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:47,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:02:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:02:48,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:02:48,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318186306] [2023-08-24 01:02:48,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318186306] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:02:48,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:02:48,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-24 01:02:48,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008165568] [2023-08-24 01:02:48,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:02:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 01:02:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:02:48,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 01:02:48,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2023-08-24 01:02:48,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 362 out of 1095 [2023-08-24 01:02:48,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 388 transitions, 4265 flow. Second operand has 14 states, 14 states have (on average 364.57142857142856) internal successors, (5104), 14 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:48,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:02:48,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 362 of 1095 [2023-08-24 01:02:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:02:54,216 INFO L124 PetriNetUnfolderBase]: 15205/25487 cut-off events. [2023-08-24 01:02:54,216 INFO L125 PetriNetUnfolderBase]: For 292676/292676 co-relation queries the response was YES. [2023-08-24 01:02:54,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141111 conditions, 25487 events. 15205/25487 cut-off events. For 292676/292676 co-relation queries the response was YES. Maximal size of possible extension queue 1572. Compared 207971 event pairs, 3993 based on Foata normal form. 1/25487 useless extension candidates. Maximal degree in co-relation 141039. Up to 12092 conditions per place. [2023-08-24 01:02:54,494 INFO L140 encePairwiseOnDemand]: 1079/1095 looper letters, 519 selfloop transitions, 162 changer transitions 8/689 dead transitions. [2023-08-24 01:02:54,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 689 transitions, 8668 flow [2023-08-24 01:02:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 01:02:54,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 01:02:54,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4858 transitions. [2023-08-24 01:02:54,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3412715138742536 [2023-08-24 01:02:54,498 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4858 transitions. [2023-08-24 01:02:54,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4858 transitions. [2023-08-24 01:02:54,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:02:54,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4858 transitions. [2023-08-24 01:02:54,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 373.6923076923077) internal successors, (4858), 13 states have internal predecessors, (4858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:54,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1095.0) internal successors, (15330), 14 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:54,510 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1095.0) internal successors, (15330), 14 states have internal predecessors, (15330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:54,511 INFO L175 Difference]: Start difference. First operand has 155 places, 388 transitions, 4265 flow. Second operand 13 states and 4858 transitions. [2023-08-24 01:02:54,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 689 transitions, 8668 flow [2023-08-24 01:02:58,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 689 transitions, 8582 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-24 01:02:58,890 INFO L231 Difference]: Finished difference. Result has 172 places, 433 transitions, 5449 flow [2023-08-24 01:02:58,890 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=4235, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5449, PETRI_PLACES=172, PETRI_TRANSITIONS=433} [2023-08-24 01:02:58,891 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-24 01:02:58,891 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 433 transitions, 5449 flow [2023-08-24 01:02:58,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 364.57142857142856) internal successors, (5104), 14 states have internal predecessors, (5104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:02:58,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:02:58,892 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] [2023-08-24 01:02:58,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 01:02:58,892 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:02:58,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:02:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -214176279, now seen corresponding path program 5 times [2023-08-24 01:02:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:02:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072484070] [2023-08-24 01:02:58,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:02:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:02:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:03:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:03:00,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:03:00,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072484070] [2023-08-24 01:03:00,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072484070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:03:00,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:03:00,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 01:03:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988241996] [2023-08-24 01:03:00,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:03:00,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 01:03:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:03:00,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 01:03:00,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-24 01:03:00,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1095 [2023-08-24 01:03:00,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 433 transitions, 5449 flow. Second operand has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:00,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:03:00,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1095 [2023-08-24 01:03:00,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:03:08,744 INFO L124 PetriNetUnfolderBase]: 25249/43164 cut-off events. [2023-08-24 01:03:08,744 INFO L125 PetriNetUnfolderBase]: For 562905/562905 co-relation queries the response was YES. [2023-08-24 01:03:09,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251485 conditions, 43164 events. 25249/43164 cut-off events. For 562905/562905 co-relation queries the response was YES. Maximal size of possible extension queue 2740. Compared 389749 event pairs, 7894 based on Foata normal form. 2/43165 useless extension candidates. Maximal degree in co-relation 251404. Up to 15555 conditions per place. [2023-08-24 01:03:09,312 INFO L140 encePairwiseOnDemand]: 1085/1095 looper letters, 958 selfloop transitions, 48 changer transitions 8/1014 dead transitions. [2023-08-24 01:03:09,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 1014 transitions, 14666 flow [2023-08-24 01:03:09,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 01:03:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 01:03:09,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3851 transitions. [2023-08-24 01:03:09,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35168949771689495 [2023-08-24 01:03:09,316 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3851 transitions. [2023-08-24 01:03:09,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3851 transitions. [2023-08-24 01:03:09,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:03:09,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3851 transitions. [2023-08-24 01:03:09,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 385.1) internal successors, (3851), 10 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:09,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1095.0) internal successors, (12045), 11 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:09,325 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1095.0) internal successors, (12045), 11 states have internal predecessors, (12045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:09,325 INFO L175 Difference]: Start difference. First operand has 172 places, 433 transitions, 5449 flow. Second operand 10 states and 3851 transitions. [2023-08-24 01:03:09,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 1014 transitions, 14666 flow [2023-08-24 01:03:21,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 1014 transitions, 14387 flow, removed 45 selfloop flow, removed 5 redundant places. [2023-08-24 01:03:21,490 INFO L231 Difference]: Finished difference. Result has 182 places, 454 transitions, 5712 flow [2023-08-24 01:03:21,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=5285, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=385, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5712, PETRI_PLACES=182, PETRI_TRANSITIONS=454} [2023-08-24 01:03:21,490 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 140 predicate places. [2023-08-24 01:03:21,490 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 454 transitions, 5712 flow [2023-08-24 01:03:21,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:21,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:03:21,491 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] [2023-08-24 01:03:21,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 01:03:21,491 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:03:21,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:03:21,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1487682827, now seen corresponding path program 6 times [2023-08-24 01:03:21,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:03:21,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142693712] [2023-08-24 01:03:21,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:03:21,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:03:21,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:03:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:03:22,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:03:22,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142693712] [2023-08-24 01:03:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142693712] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:03:22,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:03:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-24 01:03:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294157424] [2023-08-24 01:03:22,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:03:22,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-24 01:03:22,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:03:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-24 01:03:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2023-08-24 01:03:22,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 1095 [2023-08-24 01:03:22,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 454 transitions, 5712 flow. Second operand has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:22,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:03:22,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 1095 [2023-08-24 01:03:22,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:03:32,370 INFO L124 PetriNetUnfolderBase]: 26812/46000 cut-off events. [2023-08-24 01:03:32,370 INFO L125 PetriNetUnfolderBase]: For 635341/635341 co-relation queries the response was YES. [2023-08-24 01:03:32,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278109 conditions, 46000 events. 26812/46000 cut-off events. For 635341/635341 co-relation queries the response was YES. Maximal size of possible extension queue 2887. Compared 418001 event pairs, 6598 based on Foata normal form. 1/46000 useless extension candidates. Maximal degree in co-relation 278023. Up to 16692 conditions per place. [2023-08-24 01:03:33,013 INFO L140 encePairwiseOnDemand]: 1079/1095 looper letters, 356 selfloop transitions, 362 changer transitions 7/725 dead transitions. [2023-08-24 01:03:33,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 725 transitions, 10296 flow [2023-08-24 01:03:33,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-24 01:03:33,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-24 01:03:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 6883 transitions. [2023-08-24 01:03:33,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3492135971588026 [2023-08-24 01:03:33,019 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 6883 transitions. [2023-08-24 01:03:33,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 6883 transitions. [2023-08-24 01:03:33,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:03:33,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 6883 transitions. [2023-08-24 01:03:33,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 382.3888888888889) internal successors, (6883), 18 states have internal predecessors, (6883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:33,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1095.0) internal successors, (20805), 19 states have internal predecessors, (20805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:33,034 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1095.0) internal successors, (20805), 19 states have internal predecessors, (20805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:33,034 INFO L175 Difference]: Start difference. First operand has 182 places, 454 transitions, 5712 flow. Second operand 18 states and 6883 transitions. [2023-08-24 01:03:33,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 725 transitions, 10296 flow [2023-08-24 01:03:47,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 725 transitions, 10227 flow, removed 25 selfloop flow, removed 3 redundant places. [2023-08-24 01:03:47,541 INFO L231 Difference]: Finished difference. Result has 202 places, 554 transitions, 7972 flow [2023-08-24 01:03:47,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=5675, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=7972, PETRI_PLACES=202, PETRI_TRANSITIONS=554} [2023-08-24 01:03:47,542 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 160 predicate places. [2023-08-24 01:03:47,542 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 554 transitions, 7972 flow [2023-08-24 01:03:47,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 373.7692307692308) internal successors, (4859), 13 states have internal predecessors, (4859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:47,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:03:47,542 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] [2023-08-24 01:03:47,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-24 01:03:47,543 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:03:47,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:03:47,543 INFO L85 PathProgramCache]: Analyzing trace with hash -1563862965, now seen corresponding path program 7 times [2023-08-24 01:03:47,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:03:47,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782323209] [2023-08-24 01:03:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:03:47,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:03:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:03:48,897 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:03:48,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:03:48,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782323209] [2023-08-24 01:03:48,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782323209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:03:48,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:03:48,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-24 01:03:48,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566753397] [2023-08-24 01:03:48,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:03:48,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 01:03:48,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:03:48,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 01:03:48,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2023-08-24 01:03:48,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 344 out of 1095 [2023-08-24 01:03:48,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 554 transitions, 7972 flow. Second operand has 17 states, 17 states have (on average 346.11764705882354) internal successors, (5884), 17 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:03:48,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:03:48,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 344 of 1095 [2023-08-24 01:03:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:04:02,534 INFO L124 PetriNetUnfolderBase]: 31984/55909 cut-off events. [2023-08-24 01:04:02,534 INFO L125 PetriNetUnfolderBase]: For 801657/801657 co-relation queries the response was YES. [2023-08-24 01:04:03,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351079 conditions, 55909 events. 31984/55909 cut-off events. For 801657/801657 co-relation queries the response was YES. Maximal size of possible extension queue 3533. Compared 536839 event pairs, 6689 based on Foata normal form. 2/55910 useless extension candidates. Maximal degree in co-relation 350986. Up to 14662 conditions per place. [2023-08-24 01:04:03,542 INFO L140 encePairwiseOnDemand]: 1077/1095 looper letters, 1012 selfloop transitions, 532 changer transitions 8/1552 dead transitions. [2023-08-24 01:04:03,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1552 transitions, 24688 flow [2023-08-24 01:04:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 01:04:03,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 01:04:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 6746 transitions. [2023-08-24 01:04:03,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32424897861091084 [2023-08-24 01:04:03,548 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 6746 transitions. [2023-08-24 01:04:03,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 6746 transitions. [2023-08-24 01:04:03,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:04:03,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 6746 transitions. [2023-08-24 01:04:03,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 355.05263157894734) internal successors, (6746), 19 states have internal predecessors, (6746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:03,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 1095.0) internal successors, (21900), 20 states have internal predecessors, (21900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:03,565 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 1095.0) internal successors, (21900), 20 states have internal predecessors, (21900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:03,565 INFO L175 Difference]: Start difference. First operand has 202 places, 554 transitions, 7972 flow. Second operand 19 states and 6746 transitions. [2023-08-24 01:04:03,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1552 transitions, 24688 flow [2023-08-24 01:04:27,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 1552 transitions, 24539 flow, removed 73 selfloop flow, removed 3 redundant places. [2023-08-24 01:04:27,028 INFO L231 Difference]: Finished difference. Result has 231 places, 1022 transitions, 17439 flow [2023-08-24 01:04:27,028 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=7899, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=17439, PETRI_PLACES=231, PETRI_TRANSITIONS=1022} [2023-08-24 01:04:27,028 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 189 predicate places. [2023-08-24 01:04:27,028 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 1022 transitions, 17439 flow [2023-08-24 01:04:27,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 346.11764705882354) internal successors, (5884), 17 states have internal predecessors, (5884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:27,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:04:27,029 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] [2023-08-24 01:04:27,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 01:04:27,029 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:04:27,030 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:04:27,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1329966495, now seen corresponding path program 8 times [2023-08-24 01:04:27,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:04:27,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869852320] [2023-08-24 01:04:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:04:27,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:04:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:04:28,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:04:28,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:04:28,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869852320] [2023-08-24 01:04:28,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869852320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:04:28,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:04:28,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-24 01:04:28,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522408857] [2023-08-24 01:04:28,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:04:28,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:04:28,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:04:28,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:04:28,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:04:28,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 1095 [2023-08-24 01:04:28,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 1022 transitions, 17439 flow. Second operand has 11 states, 11 states have (on average 378.27272727272725) internal successors, (4161), 11 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:28,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:04:28,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 1095 [2023-08-24 01:04:28,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:04:57,918 INFO L124 PetriNetUnfolderBase]: 51339/91280 cut-off events. [2023-08-24 01:04:57,918 INFO L125 PetriNetUnfolderBase]: For 1832215/1832215 co-relation queries the response was YES. [2023-08-24 01:04:59,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 667575 conditions, 91280 events. 51339/91280 cut-off events. For 1832215/1832215 co-relation queries the response was YES. Maximal size of possible extension queue 5759. Compared 950363 event pairs, 13843 based on Foata normal form. 2/91281 useless extension candidates. Maximal degree in co-relation 667468. Up to 41053 conditions per place. [2023-08-24 01:04:59,806 INFO L140 encePairwiseOnDemand]: 1078/1095 looper letters, 1072 selfloop transitions, 1127 changer transitions 14/2213 dead transitions. [2023-08-24 01:04:59,806 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 2213 transitions, 41807 flow [2023-08-24 01:04:59,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-08-24 01:04:59,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-08-24 01:04:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 15083 transitions. [2023-08-24 01:04:59,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3531904929165203 [2023-08-24 01:04:59,815 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 15083 transitions. [2023-08-24 01:04:59,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 15083 transitions. [2023-08-24 01:04:59,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:04:59,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 15083 transitions. [2023-08-24 01:04:59,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 386.7435897435897) internal successors, (15083), 39 states have internal predecessors, (15083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:59,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 1095.0) internal successors, (43800), 40 states have internal predecessors, (43800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:59,856 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 1095.0) internal successors, (43800), 40 states have internal predecessors, (43800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:04:59,857 INFO L175 Difference]: Start difference. First operand has 231 places, 1022 transitions, 17439 flow. Second operand 39 states and 15083 transitions. [2023-08-24 01:04:59,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 2213 transitions, 41807 flow [2023-08-24 01:07:23,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 2213 transitions, 40255 flow, removed 743 selfloop flow, removed 4 redundant places. [2023-08-24 01:07:23,161 INFO L231 Difference]: Finished difference. Result has 292 places, 1674 transitions, 33136 flow [2023-08-24 01:07:23,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=17076, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1022, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=542, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=33136, PETRI_PLACES=292, PETRI_TRANSITIONS=1674} [2023-08-24 01:07:23,162 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 250 predicate places. [2023-08-24 01:07:23,162 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 1674 transitions, 33136 flow [2023-08-24 01:07:23,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 378.27272727272725) internal successors, (4161), 11 states have internal predecessors, (4161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:07:23,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:07:23,163 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] [2023-08-24 01:07:23,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-24 01:07:23,163 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:07:23,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:07:23,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1985117550, now seen corresponding path program 3 times [2023-08-24 01:07:23,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:07:23,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330463285] [2023-08-24 01:07:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:07:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:07:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:07:23,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:07:23,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:07:23,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330463285] [2023-08-24 01:07:23,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330463285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:07:23,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:07:23,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-24 01:07:23,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852688476] [2023-08-24 01:07:23,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:07:23,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 01:07:23,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:07:23,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 01:07:23,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-24 01:07:23,339 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 407 out of 1095 [2023-08-24 01:07:23,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 1674 transitions, 33136 flow. Second operand has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:07:23,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:07:23,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 407 of 1095 [2023-08-24 01:07:23,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:07:59,189 INFO L124 PetriNetUnfolderBase]: 49728/88759 cut-off events. [2023-08-24 01:07:59,189 INFO L125 PetriNetUnfolderBase]: For 2005711/2005711 co-relation queries the response was YES. [2023-08-24 01:08:01,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696725 conditions, 88759 events. 49728/88759 cut-off events. For 2005711/2005711 co-relation queries the response was YES. Maximal size of possible extension queue 5572. Compared 923495 event pairs, 16472 based on Foata normal form. 322/89080 useless extension candidates. Maximal degree in co-relation 696592. Up to 37552 conditions per place. [2023-08-24 01:08:01,576 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 2090 selfloop transitions, 411 changer transitions 24/2525 dead transitions. [2023-08-24 01:08:01,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 2525 transitions, 54200 flow [2023-08-24 01:08:01,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 01:08:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 01:08:01,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2529 transitions. [2023-08-24 01:08:01,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38493150684931504 [2023-08-24 01:08:01,579 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2529 transitions. [2023-08-24 01:08:01,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2529 transitions. [2023-08-24 01:08:01,579 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:08:01,579 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2529 transitions. [2023-08-24 01:08:01,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 421.5) internal successors, (2529), 6 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:08:01,584 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1095.0) internal successors, (7665), 7 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:08:01,584 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1095.0) internal successors, (7665), 7 states have internal predecessors, (7665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:08:01,584 INFO L175 Difference]: Start difference. First operand has 292 places, 1674 transitions, 33136 flow. Second operand 6 states and 2529 transitions. [2023-08-24 01:08:01,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 2525 transitions, 54200 flow [2023-08-24 01:09:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 2525 transitions, 53184 flow, removed 508 selfloop flow, removed 2 redundant places. [2023-08-24 01:09:49,789 INFO L231 Difference]: Finished difference. Result has 296 places, 1695 transitions, 34618 flow [2023-08-24 01:09:49,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=32390, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1674, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=390, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=34618, PETRI_PLACES=296, PETRI_TRANSITIONS=1695} [2023-08-24 01:09:49,790 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 254 predicate places. [2023-08-24 01:09:49,790 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 1695 transitions, 34618 flow [2023-08-24 01:09:49,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 411.5) internal successors, (3292), 8 states have internal predecessors, (3292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:09:49,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:09:49,791 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] [2023-08-24 01:09:49,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-24 01:09:49,791 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:09:49,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:09:49,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1985542241, now seen corresponding path program 9 times [2023-08-24 01:09:49,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:09:49,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226459146] [2023-08-24 01:09:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:09:49,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:09:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:09:51,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:09:51,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:09:51,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226459146] [2023-08-24 01:09:51,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226459146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:09:51,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:09:51,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-24 01:09:51,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637158027] [2023-08-24 01:09:51,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:09:51,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-24 01:09:51,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:09:51,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-24 01:09:51,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-24 01:09:51,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 393 out of 1095 [2023-08-24 01:09:51,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 1695 transitions, 34618 flow. Second operand has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:09:51,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:09:51,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 393 of 1095 [2023-08-24 01:09:51,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:10:30,329 INFO L124 PetriNetUnfolderBase]: 49885/89322 cut-off events. [2023-08-24 01:10:30,329 INFO L125 PetriNetUnfolderBase]: For 2146010/2146010 co-relation queries the response was YES. [2023-08-24 01:10:32,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 714572 conditions, 89322 events. 49885/89322 cut-off events. For 2146010/2146010 co-relation queries the response was YES. Maximal size of possible extension queue 5608. Compared 934824 event pairs, 14504 based on Foata normal form. 2/89323 useless extension candidates. Maximal degree in co-relation 714436. Up to 35719 conditions per place. [2023-08-24 01:10:32,722 INFO L140 encePairwiseOnDemand]: 1085/1095 looper letters, 2285 selfloop transitions, 274 changer transitions 14/2573 dead transitions. [2023-08-24 01:10:32,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 2573 transitions, 56078 flow [2023-08-24 01:10:32,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 01:10:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 01:10:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 6155 transitions. [2023-08-24 01:10:32,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37473363774733637 [2023-08-24 01:10:32,727 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 6155 transitions. [2023-08-24 01:10:32,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 6155 transitions. [2023-08-24 01:10:32,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:10:32,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 6155 transitions. [2023-08-24 01:10:32,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 410.3333333333333) internal successors, (6155), 15 states have internal predecessors, (6155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:10:32,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 1095.0) internal successors, (17520), 16 states have internal predecessors, (17520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:10:32,738 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 1095.0) internal successors, (17520), 16 states have internal predecessors, (17520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:10:32,738 INFO L175 Difference]: Start difference. First operand has 296 places, 1695 transitions, 34618 flow. Second operand 15 states and 6155 transitions. [2023-08-24 01:10:32,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 2573 transitions, 56078 flow [2023-08-24 01:12:26,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 306 places, 2573 transitions, 55029 flow, removed 14 selfloop flow, removed 4 redundant places. [2023-08-24 01:12:26,875 INFO L231 Difference]: Finished difference. Result has 319 places, 1810 transitions, 37315 flow [2023-08-24 01:12:26,876 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=33899, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1695, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=37315, PETRI_PLACES=319, PETRI_TRANSITIONS=1810} [2023-08-24 01:12:26,876 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 277 predicate places. [2023-08-24 01:12:26,876 INFO L495 AbstractCegarLoop]: Abstraction has has 319 places, 1810 transitions, 37315 flow [2023-08-24 01:12:26,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 397.0) internal successors, (3573), 9 states have internal predecessors, (3573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:12:26,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:12:26,876 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] [2023-08-24 01:12:26,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-24 01:12:26,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:12:26,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:12:26,877 INFO L85 PathProgramCache]: Analyzing trace with hash -403742055, now seen corresponding path program 1 times [2023-08-24 01:12:26,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:12:26,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180294294] [2023-08-24 01:12:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:12:26,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:12:26,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:12:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:12:27,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:12:27,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180294294] [2023-08-24 01:12:27,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180294294] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:12:27,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:12:27,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-24 01:12:27,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309466359] [2023-08-24 01:12:27,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:12:27,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-24 01:12:27,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:12:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-24 01:12:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-08-24 01:12:27,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 381 out of 1095 [2023-08-24 01:12:27,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 1810 transitions, 37315 flow. Second operand has 11 states, 11 states have (on average 384.27272727272725) internal successors, (4227), 11 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:12:27,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:12:27,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 381 of 1095 [2023-08-24 01:12:27,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 01:13:14,606 INFO L124 PetriNetUnfolderBase]: 53696/99842 cut-off events. [2023-08-24 01:13:14,606 INFO L125 PetriNetUnfolderBase]: For 2326374/2326374 co-relation queries the response was YES. [2023-08-24 01:13:17,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 785032 conditions, 99842 events. 53696/99842 cut-off events. For 2326374/2326374 co-relation queries the response was YES. Maximal size of possible extension queue 6247. Compared 1104877 event pairs, 16162 based on Foata normal form. 123/99964 useless extension candidates. Maximal degree in co-relation 784885. Up to 45516 conditions per place. [2023-08-24 01:13:17,585 INFO L140 encePairwiseOnDemand]: 1087/1095 looper letters, 2349 selfloop transitions, 399 changer transitions 113/2861 dead transitions. [2023-08-24 01:13:17,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 2861 transitions, 65181 flow [2023-08-24 01:13:17,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 01:13:17,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 01:13:17,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 3151 transitions. [2023-08-24 01:13:17,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35970319634703196 [2023-08-24 01:13:17,588 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 3151 transitions. [2023-08-24 01:13:17,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 3151 transitions. [2023-08-24 01:13:17,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 01:13:17,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 3151 transitions. [2023-08-24 01:13:17,591 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 393.875) internal successors, (3151), 8 states have internal predecessors, (3151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:17,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:17,594 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1095.0) internal successors, (9855), 9 states have internal predecessors, (9855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:13:17,594 INFO L175 Difference]: Start difference. First operand has 319 places, 1810 transitions, 37315 flow. Second operand 8 states and 3151 transitions. [2023-08-24 01:13:17,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 2861 transitions, 65181 flow [2023-08-24 01:15:35,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 2861 transitions, 64840 flow, removed 89 selfloop flow, removed 3 redundant places. [2023-08-24 01:15:35,675 INFO L231 Difference]: Finished difference. Result has 326 places, 1868 transitions, 39936 flow [2023-08-24 01:15:35,675 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1095, PETRI_DIFFERENCE_MINUEND_FLOW=37134, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=341, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=39936, PETRI_PLACES=326, PETRI_TRANSITIONS=1868} [2023-08-24 01:15:35,676 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 284 predicate places. [2023-08-24 01:15:35,676 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1868 transitions, 39936 flow [2023-08-24 01:15:35,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 384.27272727272725) internal successors, (4227), 11 states have internal predecessors, (4227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:35,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 01:15:35,676 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] [2023-08-24 01:15:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-24 01:15:35,677 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 01:15:35,677 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 01:15:35,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1597075221, now seen corresponding path program 2 times [2023-08-24 01:15:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 01:15:35,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212366905] [2023-08-24 01:15:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 01:15:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 01:15:35,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 01:15:36,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-24 01:15:36,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 01:15:36,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212366905] [2023-08-24 01:15:36,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212366905] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 01:15:36,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 01:15:36,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-24 01:15:36,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486072424] [2023-08-24 01:15:36,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 01:15:36,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 01:15:36,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 01:15:36,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 01:15:36,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-24 01:15:36,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 403 out of 1095 [2023-08-24 01:15:36,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1868 transitions, 39936 flow. Second operand has 7 states, 7 states have (on average 408.14285714285717) internal successors, (2857), 7 states have internal predecessors, (2857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 01:15:36,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 01:15:36,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 403 of 1095 [2023-08-24 01:15:36,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 01:15:38,734 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 [2023-08-24 01:15:38,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 01:15:38,745 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 01:15:38,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-24 01:15:38,746 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 403/1095 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 33148 conditions, 4249 events (2526/4248 cut-off events. For 163735/163735 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 35632 event pairs, 1218 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 33013. Up to 3327 conditions per place.). [2023-08-24 01:15:38,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 01:15:38,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 01:15:38,747 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 01:15:38,747 INFO L445 BasicCegarLoop]: Path program histogram: [9, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 01:15:38,749 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 01:15:38,749 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 01:15:38,751 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 01:15:38 BasicIcfg [2023-08-24 01:15:38,751 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 01:15:38,751 INFO L158 Benchmark]: Toolchain (without parser) took 818674.98ms. Allocated memory was 373.3MB in the beginning and 13.3GB in the end (delta: 12.9GB). Free memory was 349.4MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-24 01:15:38,751 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory was 350.3MB in the beginning and 350.2MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 01:15:38,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.62ms. Allocated memory is still 373.3MB. Free memory was 349.4MB in the beginning and 336.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 01:15:38,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.01ms. Allocated memory is still 373.3MB. Free memory was 336.3MB in the beginning and 333.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 01:15:38,753 INFO L158 Benchmark]: Boogie Preprocessor took 47.43ms. Allocated memory is still 373.3MB. Free memory was 333.1MB in the beginning and 330.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 01:15:38,753 INFO L158 Benchmark]: RCFGBuilder took 671.08ms. Allocated memory is still 373.3MB. Free memory was 330.4MB in the beginning and 345.2MB in the end (delta: -14.8MB). Peak memory consumption was 38.1MB. Max. memory is 16.0GB. [2023-08-24 01:15:38,753 INFO L158 Benchmark]: TraceAbstraction took 817710.09ms. Allocated memory was 373.3MB in the beginning and 13.3GB in the end (delta: 12.9GB). Free memory was 345.2MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-24 01:15:38,754 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 373.3MB. Free memory was 350.3MB in the beginning and 350.2MB in the end (delta: 87.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 208.62ms. Allocated memory is still 373.3MB. Free memory was 349.4MB in the beginning and 336.3MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.01ms. Allocated memory is still 373.3MB. Free memory was 336.3MB in the beginning and 333.1MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.43ms. Allocated memory is still 373.3MB. Free memory was 333.1MB in the beginning and 330.4MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 671.08ms. Allocated memory is still 373.3MB. Free memory was 330.4MB in the beginning and 345.2MB in the end (delta: -14.8MB). Peak memory consumption was 38.1MB. Max. memory is 16.0GB. * TraceAbstraction took 817710.09ms. Allocated memory was 373.3MB in the beginning and 13.3GB in the end (delta: 12.9GB). Free memory was 345.2MB in the beginning and 9.8GB in the end (delta: -9.4GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 13.9s, 463 PlacesBefore, 42 PlacesAfterwards, 494 TransitionsBefore, 42 TransitionsAfterwards, 17280 CoEnabledTransitionPairs, 8 FixpointIterations, 292 TrivialSequentialCompositions, 137 ConcurrentSequentialCompositions, 80 TrivialYvCompositions, 48 ConcurrentYvCompositions, 31 ChoiceCompositions, 588 TotalNumberOfCompositions, 20163 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 17954, independent: 17776, independent conditional: 0, independent unconditional: 17776, dependent: 178, dependent conditional: 0, dependent unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 10455, independent: 10408, independent conditional: 0, independent unconditional: 10408, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 17954, independent: 7368, independent conditional: 0, independent unconditional: 7368, dependent: 131, dependent conditional: 0, dependent unconditional: 131, unknown: 10455, unknown conditional: 0, unknown unconditional: 10455] , Statistics on independence cache: Total cache size (in pairs): 155, Positive cache size: 140, Positive conditional cache size: 0, Positive unconditional cache size: 140, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 403/1095 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 33148 conditions, 4249 events (2526/4248 cut-off events. For 163735/163735 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 35632 event pairs, 1218 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 33013. Up to 3327 conditions per place.). - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 403/1095 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 33148 conditions, 4249 events (2526/4248 cut-off events. For 163735/163735 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 35632 event pairs, 1218 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 33013. Up to 3327 conditions per place.). - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 403/1095 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 33148 conditions, 4249 events (2526/4248 cut-off events. For 163735/163735 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 35632 event pairs, 1218 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 33013. Up to 3327 conditions per place.). - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (7states, 403/1095 universal loopers) in iteration 23,while PetriNetUnfolder was constructing finite prefix that currently has 33148 conditions, 4249 events (2526/4248 cut-off events. For 163735/163735 co-relation queries the response was YES. Maximal size of possible extension queue 1690. Compared 35632 event pairs, 1218 based on Foata normal form. 0/5939 useless extension candidates. Maximal degree in co-relation 33013. Up to 3327 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 605 locations, 4 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: 817.6s, OverallIterations: 23, TraceHistogramMax: 1, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 786.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 14.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2940 SdHoareTripleChecker+Valid, 8.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2940 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 7.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 98 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 12868 IncrementalHoareTripleChecker+Invalid, 12966 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 98 mSolverCounterUnsat, 0 mSDtfsCounter, 12868 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 300 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1096 ImplicationChecksByTransitivity, 11.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39936occurred in iteration=22, InterpolantAutomatonStates: 232, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 826 NumberOfCodeBlocks, 826 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 802 ConstructedInterpolants, 0 QuantifiedInterpolants, 13484 SizeOfPredicates, 2 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 24 InterpolantComputations, 23 PerfectInterpolantSequences, 108/109 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