./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 13:08:20,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 13:08:20,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 13:08:20,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 13:08:20,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 13:08:20,726 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 13:08:20,726 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 13:08:20,727 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 13:08:20,727 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 13:08:20,730 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 13:08:20,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 13:08:20,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 13:08:20,731 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 13:08:20,731 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 13:08:20,731 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 13:08:20,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 13:08:20,732 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 13:08:20,732 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 13:08:20,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 13:08:20,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 13:08:20,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 13:08:20,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 13:08:20,734 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 13:08:20,734 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 13:08:20,735 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 13:08:20,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 13:08:20,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 13:08:20,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 13:08:20,735 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 13:08:20,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 13:08:20,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 13:08:20,737 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 13:08:20,737 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:08:20,737 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 13:08:20,737 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 13:08:20,738 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 13:08:20,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 13:08:20,739 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ddaccc1a0ddb0072edffeef8ad9576acf619c322d8f731037fda7dc2530a10f9 [2024-11-22 13:08:20,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 13:08:20,950 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 13:08:20,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 13:08:20,955 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 13:08:20,955 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 13:08:20,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2024-11-22 13:08:22,268 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 13:08:22,462 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 13:08:22,462 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i [2024-11-22 13:08:22,473 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5628cd6/3bbf1884f33d44669886654509dffe7c/FLAGcecdd0896 [2024-11-22 13:08:22,843 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff5628cd6/3bbf1884f33d44669886654509dffe7c [2024-11-22 13:08:22,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 13:08:22,848 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 13:08:22,849 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 13:08:22,849 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 13:08:22,856 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 13:08:22,857 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:22" (1/1) ... [2024-11-22 13:08:22,858 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34bfd41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:22, skipping insertion in model container [2024-11-22 13:08:22,858 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:22" (1/1) ... [2024-11-22 13:08:22,879 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 13:08:23,025 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i[916,929] [2024-11-22 13:08:23,095 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:08:23,105 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 13:08:23,123 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-s_file-56.i[916,929] [2024-11-22 13:08:23,192 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 13:08:23,229 INFO L204 MainTranslator]: Completed translation [2024-11-22 13:08:23,229 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23 WrapperNode [2024-11-22 13:08:23,229 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 13:08:23,234 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 13:08:23,234 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 13:08:23,234 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 13:08:23,239 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,303 INFO L138 Inliner]: procedures = 30, calls = 178, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 571 [2024-11-22 13:08:23,303 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 13:08:23,304 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 13:08:23,304 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 13:08:23,304 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 13:08:23,313 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,314 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,319 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,328 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-22 13:08:23,328 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,329 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,346 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,348 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,350 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 13:08:23,355 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 13:08:23,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 13:08:23,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 13:08:23,356 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (1/1) ... [2024-11-22 13:08:23,366 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 13:08:23,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:08:23,412 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 13:08:23,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 13:08:23,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 13:08:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-22 13:08:23,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 13:08:23,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-22 13:08:23,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 13:08:23,454 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 13:08:23,560 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 13:08:23,563 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 13:08:23,995 INFO L? ?]: Removed 158 outVars from TransFormulas that were not future-live. [2024-11-22 13:08:23,995 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 13:08:24,006 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 13:08:24,006 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 13:08:24,007 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:24 BoogieIcfgContainer [2024-11-22 13:08:24,007 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 13:08:24,008 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 13:08:24,009 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 13:08:24,011 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 13:08:24,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:22" (1/3) ... [2024-11-22 13:08:24,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb82e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:24, skipping insertion in model container [2024-11-22 13:08:24,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:23" (2/3) ... [2024-11-22 13:08:24,012 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bb82e53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:24, skipping insertion in model container [2024-11-22 13:08:24,012 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:24" (3/3) ... [2024-11-22 13:08:24,013 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-s_file-56.i [2024-11-22 13:08:24,026 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 13:08:24,026 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 13:08:24,070 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 13:08:24,075 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@63a5452f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 13:08:24,075 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 13:08:24,078 INFO L276 IsEmpty]: Start isEmpty. Operand has 126 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 105 states have internal predecessors, (149), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:08:24,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-22 13:08:24,088 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:24,089 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:24,089 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:24,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:24,094 INFO L85 PathProgramCache]: Analyzing trace with hash 607828223, now seen corresponding path program 1 times [2024-11-22 13:08:24,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:24,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943803552] [2024-11-22 13:08:24,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:24,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:24,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:24,371 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-22 13:08:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943803552] [2024-11-22 13:08:24,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943803552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:08:24,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584895747] [2024-11-22 13:08:24,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:24,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:08:24,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:08:24,375 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) [2024-11-22 13:08:24,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 13:08:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:24,608 INFO L255 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 13:08:24,617 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:08:24,639 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2024-11-22 13:08:24,639 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:08:24,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584895747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:24,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:08:24,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 13:08:24,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893682452] [2024-11-22 13:08:24,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:24,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 13:08:24,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 13:08:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:08:24,667 INFO L87 Difference]: Start difference. First operand has 126 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 105 states have internal predecessors, (149), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:24,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:24,692 INFO L93 Difference]: Finished difference Result 245 states and 387 transitions. [2024-11-22 13:08:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 13:08:24,694 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2024-11-22 13:08:24,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:24,702 INFO L225 Difference]: With dead ends: 245 [2024-11-22 13:08:24,702 INFO L226 Difference]: Without dead ends: 122 [2024-11-22 13:08:24,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 13:08:24,708 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:24,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:08:24,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-22 13:08:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-22 13:08:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 101 states have (on average 1.4059405940594059) internal successors, (142), 101 states have internal predecessors, (142), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:08:24,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 180 transitions. [2024-11-22 13:08:24,745 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 180 transitions. Word has length 151 [2024-11-22 13:08:24,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:24,745 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 180 transitions. [2024-11-22 13:08:24,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 30.5) internal successors, (61), 2 states have internal predecessors, (61), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:24,746 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 180 transitions. [2024-11-22 13:08:24,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-22 13:08:24,748 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:24,748 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:24,758 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 13:08:24,949 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 13:08:24,949 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:24,950 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:24,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1661937133, now seen corresponding path program 1 times [2024-11-22 13:08:24,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:24,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089828923] [2024-11-22 13:08:24,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:24,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:25,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:25,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089828923] [2024-11-22 13:08:25,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089828923] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:25,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:25,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 13:08:25,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901199717] [2024-11-22 13:08:25,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:25,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 13:08:25,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:25,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 13:08:25,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:08:25,219 INFO L87 Difference]: Start difference. First operand 122 states and 180 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:25,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:25,264 INFO L93 Difference]: Finished difference Result 243 states and 360 transitions. [2024-11-22 13:08:25,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 13:08:25,265 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 151 [2024-11-22 13:08:25,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:25,267 INFO L225 Difference]: With dead ends: 243 [2024-11-22 13:08:25,267 INFO L226 Difference]: Without dead ends: 124 [2024-11-22 13:08:25,268 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 13:08:25,269 INFO L432 NwaCegarLoop]: 178 mSDtfsCounter, 0 mSDsluCounter, 345 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 523 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:25,269 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 523 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:08:25,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-22 13:08:25,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2024-11-22 13:08:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 103 states have (on average 1.3980582524271845) internal successors, (144), 103 states have internal predecessors, (144), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:08:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 182 transitions. [2024-11-22 13:08:25,290 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 182 transitions. Word has length 151 [2024-11-22 13:08:25,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:25,293 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 182 transitions. [2024-11-22 13:08:25,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:25,293 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 182 transitions. [2024-11-22 13:08:25,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-22 13:08:25,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:25,297 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:25,298 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 13:08:25,298 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:25,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:25,299 INFO L85 PathProgramCache]: Analyzing trace with hash 982664879, now seen corresponding path program 1 times [2024-11-22 13:08:25,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:25,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576652189] [2024-11-22 13:08:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:25,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:25,440 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:25,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:25,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576652189] [2024-11-22 13:08:25,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576652189] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:25,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:25,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:08:25,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014213893] [2024-11-22 13:08:25,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:25,442 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:08:25,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:25,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:08:25,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:25,444 INFO L87 Difference]: Start difference. First operand 124 states and 182 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:25,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:25,468 INFO L93 Difference]: Finished difference Result 246 states and 363 transitions. [2024-11-22 13:08:25,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:08:25,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2024-11-22 13:08:25,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:25,471 INFO L225 Difference]: With dead ends: 246 [2024-11-22 13:08:25,471 INFO L226 Difference]: Without dead ends: 125 [2024-11-22 13:08:25,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:25,473 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:25,473 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:08:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-22 13:08:25,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2024-11-22 13:08:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 104 states have (on average 1.3942307692307692) internal successors, (145), 104 states have internal predecessors, (145), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2024-11-22 13:08:25,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 183 transitions. [2024-11-22 13:08:25,492 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 183 transitions. Word has length 151 [2024-11-22 13:08:25,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:25,492 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 183 transitions. [2024-11-22 13:08:25,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:25,493 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 183 transitions. [2024-11-22 13:08:25,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-22 13:08:25,494 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:25,495 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:25,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 13:08:25,495 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:25,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:25,496 INFO L85 PathProgramCache]: Analyzing trace with hash 165016429, now seen corresponding path program 1 times [2024-11-22 13:08:25,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:25,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83647225] [2024-11-22 13:08:25,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:25,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:26,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:26,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83647225] [2024-11-22 13:08:26,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83647225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:26,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:26,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:08:26,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072635627] [2024-11-22 13:08:26,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:26,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:08:26,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:26,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:08:26,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:08:26,894 INFO L87 Difference]: Start difference. First operand 125 states and 183 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:28,355 INFO L93 Difference]: Finished difference Result 677 states and 1006 transitions. [2024-11-22 13:08:28,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 13:08:28,356 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 151 [2024-11-22 13:08:28,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:28,358 INFO L225 Difference]: With dead ends: 677 [2024-11-22 13:08:28,358 INFO L226 Difference]: Without dead ends: 555 [2024-11-22 13:08:28,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:08:28,363 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 862 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1153 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 1013 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:28,364 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [862 Valid, 1013 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1153 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 13:08:28,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-11-22 13:08:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 295. [2024-11-22 13:08:28,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 254 states have (on average 1.4409448818897639) internal successors, (366), 254 states have internal predecessors, (366), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:28,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 442 transitions. [2024-11-22 13:08:28,389 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 442 transitions. Word has length 151 [2024-11-22 13:08:28,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:28,389 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 442 transitions. [2024-11-22 13:08:28,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,390 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 442 transitions. [2024-11-22 13:08:28,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 13:08:28,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:28,391 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:28,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 13:08:28,391 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:28,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:28,392 INFO L85 PathProgramCache]: Analyzing trace with hash -6012814, now seen corresponding path program 1 times [2024-11-22 13:08:28,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:28,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190136975] [2024-11-22 13:08:28,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:28,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:28,461 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:28,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:28,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190136975] [2024-11-22 13:08:28,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190136975] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:28,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:28,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:08:28,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586339260] [2024-11-22 13:08:28,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:28,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:08:28,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:28,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:08:28,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,465 INFO L87 Difference]: Start difference. First operand 295 states and 442 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:28,533 INFO L93 Difference]: Finished difference Result 586 states and 879 transitions. [2024-11-22 13:08:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:08:28,534 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-22 13:08:28,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:28,537 INFO L225 Difference]: With dead ends: 586 [2024-11-22 13:08:28,537 INFO L226 Difference]: Without dead ends: 294 [2024-11-22 13:08:28,538 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,540 INFO L432 NwaCegarLoop]: 180 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:28,540 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 346 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:08:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-22 13:08:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2024-11-22 13:08:28,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 253 states have (on average 1.4308300395256917) internal successors, (362), 253 states have internal predecessors, (362), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:28,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 438 transitions. [2024-11-22 13:08:28,558 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 438 transitions. Word has length 152 [2024-11-22 13:08:28,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:28,559 INFO L471 AbstractCegarLoop]: Abstraction has 294 states and 438 transitions. [2024-11-22 13:08:28,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,560 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 438 transitions. [2024-11-22 13:08:28,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 13:08:28,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:28,562 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:28,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 13:08:28,562 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:28,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:28,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1365661008, now seen corresponding path program 1 times [2024-11-22 13:08:28,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:28,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586883179] [2024-11-22 13:08:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:28,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:28,653 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:28,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586883179] [2024-11-22 13:08:28,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586883179] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:28,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:28,656 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:08:28,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901699366] [2024-11-22 13:08:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:28,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:08:28,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:08:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,657 INFO L87 Difference]: Start difference. First operand 294 states and 438 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:28,732 INFO L93 Difference]: Finished difference Result 589 states and 881 transitions. [2024-11-22 13:08:28,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:08:28,734 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-22 13:08:28,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:28,736 INFO L225 Difference]: With dead ends: 589 [2024-11-22 13:08:28,736 INFO L226 Difference]: Without dead ends: 298 [2024-11-22 13:08:28,736 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,737 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:28,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:08:28,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-22 13:08:28,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-22 13:08:28,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 257 states have (on average 1.424124513618677) internal successors, (366), 257 states have internal predecessors, (366), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:28,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 442 transitions. [2024-11-22 13:08:28,757 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 442 transitions. Word has length 152 [2024-11-22 13:08:28,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:28,758 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 442 transitions. [2024-11-22 13:08:28,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 442 transitions. [2024-11-22 13:08:28,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-22 13:08:28,759 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:28,759 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:28,760 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 13:08:28,760 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:28,760 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:28,760 INFO L85 PathProgramCache]: Analyzing trace with hash -28424802, now seen corresponding path program 1 times [2024-11-22 13:08:28,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:28,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510641590] [2024-11-22 13:08:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:28,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:28,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:28,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:28,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510641590] [2024-11-22 13:08:28,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510641590] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:28,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:28,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:08:28,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011838712] [2024-11-22 13:08:28,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:28,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:08:28,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:28,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:08:28,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,849 INFO L87 Difference]: Start difference. First operand 298 states and 442 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:28,918 INFO L93 Difference]: Finished difference Result 593 states and 881 transitions. [2024-11-22 13:08:28,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:08:28,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 152 [2024-11-22 13:08:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:28,920 INFO L225 Difference]: With dead ends: 593 [2024-11-22 13:08:28,921 INFO L226 Difference]: Without dead ends: 298 [2024-11-22 13:08:28,921 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:08:28,922 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:28,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 345 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:08:28,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2024-11-22 13:08:28,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2024-11-22 13:08:28,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 257 states have (on average 1.416342412451362) internal successors, (364), 257 states have internal predecessors, (364), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:28,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 440 transitions. [2024-11-22 13:08:28,931 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 440 transitions. Word has length 152 [2024-11-22 13:08:28,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:28,932 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 440 transitions. [2024-11-22 13:08:28,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:28,932 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 440 transitions. [2024-11-22 13:08:28,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:28,933 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:28,933 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:28,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 13:08:28,933 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:28,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1035364039, now seen corresponding path program 1 times [2024-11-22 13:08:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:28,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638009235] [2024-11-22 13:08:28,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:28,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:29,168 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:29,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:29,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638009235] [2024-11-22 13:08:29,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638009235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:29,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:29,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:08:29,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527150779] [2024-11-22 13:08:29,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:29,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:08:29,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:29,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:08:29,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:08:29,171 INFO L87 Difference]: Start difference. First operand 298 states and 440 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:29,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:29,526 INFO L93 Difference]: Finished difference Result 709 states and 1054 transitions. [2024-11-22 13:08:29,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:08:29,527 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-22 13:08:29,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:29,529 INFO L225 Difference]: With dead ends: 709 [2024-11-22 13:08:29,529 INFO L226 Difference]: Without dead ends: 414 [2024-11-22 13:08:29,529 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:08:29,530 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 76 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:29,530 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 635 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:08:29,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-22 13:08:29,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 332. [2024-11-22 13:08:29,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 291 states have (on average 1.436426116838488) internal successors, (418), 291 states have internal predecessors, (418), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:29,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 494 transitions. [2024-11-22 13:08:29,540 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 494 transitions. Word has length 153 [2024-11-22 13:08:29,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:29,541 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 494 transitions. [2024-11-22 13:08:29,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:29,541 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 494 transitions. [2024-11-22 13:08:29,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:29,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:29,542 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:29,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 13:08:29,543 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:29,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:29,543 INFO L85 PathProgramCache]: Analyzing trace with hash -618514157, now seen corresponding path program 1 times [2024-11-22 13:08:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:29,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912365793] [2024-11-22 13:08:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:29,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:29,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:33,112 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:33,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:33,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912365793] [2024-11-22 13:08:33,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912365793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:33,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:33,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 13:08:33,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877271972] [2024-11-22 13:08:33,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:33,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 13:08:33,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:33,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 13:08:33,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2024-11-22 13:08:33,114 INFO L87 Difference]: Start difference. First operand 332 states and 494 transitions. Second operand has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:35,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:35,966 INFO L93 Difference]: Finished difference Result 946 states and 1408 transitions. [2024-11-22 13:08:35,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:08:35,966 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:08:35,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:35,969 INFO L225 Difference]: With dead ends: 946 [2024-11-22 13:08:35,969 INFO L226 Difference]: Without dead ends: 617 [2024-11-22 13:08:35,974 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=188, Invalid=804, Unknown=0, NotChecked=0, Total=992 [2024-11-22 13:08:35,974 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 1050 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 2005 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1050 SdHoareTripleChecker+Valid, 1163 SdHoareTripleChecker+Invalid, 2113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:35,974 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1050 Valid, 1163 Invalid, 2113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2005 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-22 13:08:35,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2024-11-22 13:08:35,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 378. [2024-11-22 13:08:35,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 337 states have (on average 1.456973293768546) internal successors, (491), 337 states have internal predecessors, (491), 38 states have call successors, (38), 2 states have call predecessors, (38), 2 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-22 13:08:35,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 567 transitions. [2024-11-22 13:08:35,990 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 567 transitions. Word has length 153 [2024-11-22 13:08:35,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:35,991 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 567 transitions. [2024-11-22 13:08:35,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:35,991 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 567 transitions. [2024-11-22 13:08:35,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:35,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:35,993 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:35,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 13:08:35,994 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:35,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1205320171, now seen corresponding path program 1 times [2024-11-22 13:08:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:35,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136454956] [2024-11-22 13:08:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:35,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:38,656 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:38,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:38,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136454956] [2024-11-22 13:08:38,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136454956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:38,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:38,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-22 13:08:38,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867828901] [2024-11-22 13:08:38,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:38,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 13:08:38,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:38,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 13:08:38,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:08:38,658 INFO L87 Difference]: Start difference. First operand 378 states and 567 transitions. Second operand has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:40,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:40,609 INFO L93 Difference]: Finished difference Result 1002 states and 1490 transitions. [2024-11-22 13:08:40,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:08:40,609 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:08:40,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:40,611 INFO L225 Difference]: With dead ends: 1002 [2024-11-22 13:08:40,611 INFO L226 Difference]: Without dead ends: 627 [2024-11-22 13:08:40,613 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:08:40,613 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 902 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 902 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 1674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:40,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [902 Valid, 1127 Invalid, 1674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 13:08:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2024-11-22 13:08:40,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 426. [2024-11-22 13:08:40,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 380 states have (on average 1.444736842105263) internal successors, (549), 381 states have internal predecessors, (549), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:40,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 633 transitions. [2024-11-22 13:08:40,626 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 633 transitions. Word has length 153 [2024-11-22 13:08:40,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:40,626 INFO L471 AbstractCegarLoop]: Abstraction has 426 states and 633 transitions. [2024-11-22 13:08:40,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 6.1) internal successors, (61), 13 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:40,627 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 633 transitions. [2024-11-22 13:08:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:40,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:40,628 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:40,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 13:08:40,628 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:40,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:40,629 INFO L85 PathProgramCache]: Analyzing trace with hash 121992353, now seen corresponding path program 1 times [2024-11-22 13:08:40,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:40,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405937815] [2024-11-22 13:08:40,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:40,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:40,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:40,810 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:40,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:40,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405937815] [2024-11-22 13:08:40,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405937815] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:40,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:40,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 13:08:40,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334177700] [2024-11-22 13:08:40,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:40,812 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:08:40,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:40,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:08:40,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 13:08:40,813 INFO L87 Difference]: Start difference. First operand 426 states and 633 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:41,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:41,101 INFO L93 Difference]: Finished difference Result 907 states and 1348 transitions. [2024-11-22 13:08:41,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:08:41,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-22 13:08:41,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:41,104 INFO L225 Difference]: With dead ends: 907 [2024-11-22 13:08:41,104 INFO L226 Difference]: Without dead ends: 484 [2024-11-22 13:08:41,105 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:08:41,106 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 73 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:41,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 436 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 13:08:41,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-22 13:08:41,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 414. [2024-11-22 13:08:41,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 368 states have (on average 1.4266304347826086) internal successors, (525), 369 states have internal predecessors, (525), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:41,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 609 transitions. [2024-11-22 13:08:41,118 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 609 transitions. Word has length 153 [2024-11-22 13:08:41,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:41,118 INFO L471 AbstractCegarLoop]: Abstraction has 414 states and 609 transitions. [2024-11-22 13:08:41,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:41,118 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 609 transitions. [2024-11-22 13:08:41,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:41,119 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:41,120 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:41,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 13:08:41,120 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:41,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:41,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1868831367, now seen corresponding path program 1 times [2024-11-22 13:08:41,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:41,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632417721] [2024-11-22 13:08:41,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:41,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:42,715 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:42,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:42,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632417721] [2024-11-22 13:08:42,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632417721] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:42,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:42,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:08:42,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984850413] [2024-11-22 13:08:42,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:42,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:08:42,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:42,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:08:42,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:08:42,718 INFO L87 Difference]: Start difference. First operand 414 states and 609 transitions. Second operand has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:08:43,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:43,553 INFO L93 Difference]: Finished difference Result 965 states and 1423 transitions. [2024-11-22 13:08:43,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:08:43,554 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) Word has length 153 [2024-11-22 13:08:43,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:43,556 INFO L225 Difference]: With dead ends: 965 [2024-11-22 13:08:43,556 INFO L226 Difference]: Without dead ends: 554 [2024-11-22 13:08:43,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:08:43,558 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 68 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:43,558 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 970 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 13:08:43,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-22 13:08:43,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 475. [2024-11-22 13:08:43,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 429 states have (on average 1.442890442890443) internal successors, (619), 430 states have internal predecessors, (619), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:43,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 703 transitions. [2024-11-22 13:08:43,590 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 703 transitions. Word has length 153 [2024-11-22 13:08:43,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:43,591 INFO L471 AbstractCegarLoop]: Abstraction has 475 states and 703 transitions. [2024-11-22 13:08:43,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 7 states have (on average 8.714285714285714) internal successors, (61), 11 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:08:43,591 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 703 transitions. [2024-11-22 13:08:43,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:43,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:43,593 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:43,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 13:08:43,593 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:43,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:43,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1562524430, now seen corresponding path program 1 times [2024-11-22 13:08:43,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:43,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470127387] [2024-11-22 13:08:43,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:43,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:43,762 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 42 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked. [2024-11-22 13:08:43,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:43,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470127387] [2024-11-22 13:08:43,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470127387] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 13:08:43,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1235904517] [2024-11-22 13:08:43,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:43,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 13:08:43,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 13:08:43,765 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 13:08:43,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 13:08:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:44,048 INFO L255 TraceCheckSpWp]: Trace formula consists of 538 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 13:08:44,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 13:08:44,117 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:44,117 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 13:08:44,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1235904517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:44,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 13:08:44,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-22 13:08:44,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280342953] [2024-11-22 13:08:44,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:44,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 13:08:44,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:44,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 13:08:44,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:08:44,118 INFO L87 Difference]: Start difference. First operand 475 states and 703 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:44,177 INFO L93 Difference]: Finished difference Result 956 states and 1415 transitions. [2024-11-22 13:08:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 13:08:44,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 153 [2024-11-22 13:08:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:44,179 INFO L225 Difference]: With dead ends: 956 [2024-11-22 13:08:44,179 INFO L226 Difference]: Without dead ends: 484 [2024-11-22 13:08:44,180 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:08:44,181 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 0 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:44,181 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 691 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 13:08:44,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-22 13:08:44,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2024-11-22 13:08:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 438 states have (on average 1.4337899543378996) internal successors, (628), 439 states have internal predecessors, (628), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:44,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 712 transitions. [2024-11-22 13:08:44,195 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 712 transitions. Word has length 153 [2024-11-22 13:08:44,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:44,196 INFO L471 AbstractCegarLoop]: Abstraction has 484 states and 712 transitions. [2024-11-22 13:08:44,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:08:44,196 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 712 transitions. [2024-11-22 13:08:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:44,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:44,198 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:44,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 13:08:44,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-22 13:08:44,403 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:44,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 588967689, now seen corresponding path program 1 times [2024-11-22 13:08:44,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:44,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727907220] [2024-11-22 13:08:44,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:44,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:45,496 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:45,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:45,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727907220] [2024-11-22 13:08:45,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727907220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:45,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:45,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:08:45,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211249268] [2024-11-22 13:08:45,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:45,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:08:45,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:45,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:08:45,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:08:45,498 INFO L87 Difference]: Start difference. First operand 484 states and 712 transitions. Second operand has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:46,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:46,716 INFO L93 Difference]: Finished difference Result 1129 states and 1659 transitions. [2024-11-22 13:08:46,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:08:46,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 153 [2024-11-22 13:08:46,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:46,718 INFO L225 Difference]: With dead ends: 1129 [2024-11-22 13:08:46,719 INFO L226 Difference]: Without dead ends: 648 [2024-11-22 13:08:46,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=433, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:08:46,720 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 846 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:46,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 751 Invalid, 1150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 13:08:46,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2024-11-22 13:08:46,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 508. [2024-11-22 13:08:46,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 462 states have (on average 1.4437229437229437) internal successors, (667), 463 states have internal predecessors, (667), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:46,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 751 transitions. [2024-11-22 13:08:46,735 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 751 transitions. Word has length 153 [2024-11-22 13:08:46,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:46,735 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 751 transitions. [2024-11-22 13:08:46,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.545454545454546) internal successors, (61), 12 states have internal predecessors, (61), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:08:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 751 transitions. [2024-11-22 13:08:46,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:46,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:46,737 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:46,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 13:08:46,737 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:46,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2161675, now seen corresponding path program 1 times [2024-11-22 13:08:46,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:46,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870733496] [2024-11-22 13:08:46,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:46,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:46,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:48,492 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:48,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:48,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870733496] [2024-11-22 13:08:48,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870733496] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:48,493 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:48,493 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:08:48,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006351611] [2024-11-22 13:08:48,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:48,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:08:48,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:48,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:08:48,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:08:48,494 INFO L87 Difference]: Start difference. First operand 508 states and 751 transitions. Second operand has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:50,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:50,143 INFO L93 Difference]: Finished difference Result 1232 states and 1803 transitions. [2024-11-22 13:08:50,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-22 13:08:50,144 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:08:50,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:50,146 INFO L225 Difference]: With dead ends: 1232 [2024-11-22 13:08:50,146 INFO L226 Difference]: Without dead ends: 727 [2024-11-22 13:08:50,148 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=708, Unknown=0, NotChecked=0, Total=870 [2024-11-22 13:08:50,149 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 1072 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1388 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:50,149 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1064 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1388 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 13:08:50,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2024-11-22 13:08:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 508. [2024-11-22 13:08:50,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 462 states have (on average 1.4437229437229437) internal successors, (667), 463 states have internal predecessors, (667), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:50,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 751 transitions. [2024-11-22 13:08:50,163 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 751 transitions. Word has length 153 [2024-11-22 13:08:50,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:50,164 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 751 transitions. [2024-11-22 13:08:50,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 5.545454545454546) internal successors, (61), 14 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:08:50,165 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 751 transitions. [2024-11-22 13:08:50,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:50,166 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:50,166 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:50,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 13:08:50,166 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:50,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:50,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1127987247, now seen corresponding path program 1 times [2024-11-22 13:08:50,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:50,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360302517] [2024-11-22 13:08:50,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:50,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:51,670 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:51,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:51,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360302517] [2024-11-22 13:08:51,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360302517] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:51,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:51,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:08:51,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468230659] [2024-11-22 13:08:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:51,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:08:51,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:51,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:08:51,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:08:51,672 INFO L87 Difference]: Start difference. First operand 508 states and 751 transitions. Second operand has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:08:53,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:53,092 INFO L93 Difference]: Finished difference Result 1228 states and 1797 transitions. [2024-11-22 13:08:53,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-22 13:08:53,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-11-22 13:08:53,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:53,096 INFO L225 Difference]: With dead ends: 1228 [2024-11-22 13:08:53,096 INFO L226 Difference]: Without dead ends: 723 [2024-11-22 13:08:53,097 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=129, Invalid=423, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:08:53,097 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 900 mSDsluCounter, 863 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 900 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:53,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [900 Valid, 976 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-22 13:08:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-22 13:08:53,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 507. [2024-11-22 13:08:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 461 states have (on average 1.440347071583514) internal successors, (664), 462 states have internal predecessors, (664), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:53,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 748 transitions. [2024-11-22 13:08:53,110 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 748 transitions. Word has length 153 [2024-11-22 13:08:53,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:53,110 INFO L471 AbstractCegarLoop]: Abstraction has 507 states and 748 transitions. [2024-11-22 13:08:53,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 6.1) internal successors, (61), 12 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:08:53,111 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 748 transitions. [2024-11-22 13:08:53,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:53,112 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:53,112 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:53,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 13:08:53,112 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:53,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1714793261, now seen corresponding path program 1 times [2024-11-22 13:08:53,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:53,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712273928] [2024-11-22 13:08:53,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:53,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:08:55,504 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:08:55,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:08:55,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712273928] [2024-11-22 13:08:55,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712273928] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:08:55,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:08:55,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-22 13:08:55,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873226691] [2024-11-22 13:08:55,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:08:55,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 13:08:55,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:08:55,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 13:08:55,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2024-11-22 13:08:55,507 INFO L87 Difference]: Start difference. First operand 507 states and 748 transitions. Second operand has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:08:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:08:58,884 INFO L93 Difference]: Finished difference Result 1267 states and 1855 transitions. [2024-11-22 13:08:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 13:08:58,885 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) Word has length 153 [2024-11-22 13:08:58,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:08:58,887 INFO L225 Difference]: With dead ends: 1267 [2024-11-22 13:08:58,887 INFO L226 Difference]: Without dead ends: 763 [2024-11-22 13:08:58,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=217, Invalid=1189, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 13:08:58,889 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 716 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 3093 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-22 13:08:58,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2155 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3093 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-22 13:08:58,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2024-11-22 13:08:58,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 529. [2024-11-22 13:08:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 483 states have (on average 1.443064182194617) internal successors, (697), 484 states have internal predecessors, (697), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:08:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 781 transitions. [2024-11-22 13:08:58,904 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 781 transitions. Word has length 153 [2024-11-22 13:08:58,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:08:58,904 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 781 transitions. [2024-11-22 13:08:58,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 3.8125) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 5 states have call successors, (19) [2024-11-22 13:08:58,905 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 781 transitions. [2024-11-22 13:08:58,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:08:58,906 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:08:58,906 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:08:58,906 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 13:08:58,906 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:08:58,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:08:58,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1933647979, now seen corresponding path program 1 times [2024-11-22 13:08:58,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:08:58,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444511393] [2024-11-22 13:08:58,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:08:58,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:08:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:00,522 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:00,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:00,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444511393] [2024-11-22 13:09:00,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444511393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:00,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:00,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 13:09:00,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160324483] [2024-11-22 13:09:00,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:00,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 13:09:00,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:00,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 13:09:00,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 13:09:00,525 INFO L87 Difference]: Start difference. First operand 529 states and 781 transitions. Second operand has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:01,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:01,515 INFO L93 Difference]: Finished difference Result 815 states and 1199 transitions. [2024-11-22 13:09:01,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 13:09:01,515 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:09:01,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:01,517 INFO L225 Difference]: With dead ends: 815 [2024-11-22 13:09:01,518 INFO L226 Difference]: Without dead ends: 649 [2024-11-22 13:09:01,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-22 13:09:01,518 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 132 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 1009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:01,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 1309 Invalid, 1009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 13:09:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2024-11-22 13:09:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 569. [2024-11-22 13:09:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 523 states have (on average 1.4512428298279159) internal successors, (759), 524 states have internal predecessors, (759), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:09:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 843 transitions. [2024-11-22 13:09:01,532 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 843 transitions. Word has length 153 [2024-11-22 13:09:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:01,532 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 843 transitions. [2024-11-22 13:09:01,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 7.625) internal successors, (61), 11 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 843 transitions. [2024-11-22 13:09:01,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:09:01,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:01,534 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:01,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 13:09:01,534 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:01,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:01,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1652753647, now seen corresponding path program 1 times [2024-11-22 13:09:01,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:01,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877494754] [2024-11-22 13:09:01,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:01,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:02,976 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:02,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:02,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877494754] [2024-11-22 13:09:02,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877494754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:02,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:02,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 13:09:02,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483860530] [2024-11-22 13:09:02,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:02,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 13:09:02,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:02,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 13:09:02,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:09:02,978 INFO L87 Difference]: Start difference. First operand 569 states and 843 transitions. Second operand has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:04,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:04,154 INFO L93 Difference]: Finished difference Result 1312 states and 1937 transitions. [2024-11-22 13:09:04,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 13:09:04,155 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:09:04,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:04,158 INFO L225 Difference]: With dead ends: 1312 [2024-11-22 13:09:04,158 INFO L226 Difference]: Without dead ends: 746 [2024-11-22 13:09:04,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:09:04,159 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 159 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 1532 SdHoareTripleChecker+Invalid, 1274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:04,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 1532 Invalid, 1274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:09:04,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2024-11-22 13:09:04,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 555. [2024-11-22 13:09:04,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 509 states have (on average 1.4440078585461689) internal successors, (735), 510 states have internal predecessors, (735), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:09:04,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 819 transitions. [2024-11-22 13:09:04,174 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 819 transitions. Word has length 153 [2024-11-22 13:09:04,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:04,174 INFO L471 AbstractCegarLoop]: Abstraction has 555 states and 819 transitions. [2024-11-22 13:09:04,174 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 6.777777777777778) internal successors, (61), 12 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:04,174 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 819 transitions. [2024-11-22 13:09:04,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:09:04,175 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:04,175 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:04,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 13:09:04,175 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:04,176 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:04,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1871608365, now seen corresponding path program 1 times [2024-11-22 13:09:04,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:04,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526883692] [2024-11-22 13:09:04,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:04,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:04,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:06,288 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:06,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:06,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526883692] [2024-11-22 13:09:06,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526883692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:06,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:06,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2024-11-22 13:09:06,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171332484] [2024-11-22 13:09:06,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:06,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 13:09:06,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:06,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 13:09:06,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:09:06,290 INFO L87 Difference]: Start difference. First operand 555 states and 819 transitions. Second operand has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:09,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:09,185 INFO L93 Difference]: Finished difference Result 986 states and 1435 transitions. [2024-11-22 13:09:09,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-22 13:09:09,186 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:09:09,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:09,193 INFO L225 Difference]: With dead ends: 986 [2024-11-22 13:09:09,193 INFO L226 Difference]: Without dead ends: 793 [2024-11-22 13:09:09,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=254, Invalid=1468, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 13:09:09,194 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 1095 mSDsluCounter, 1787 mSDsCounter, 0 mSdLazyCounter, 2550 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:09,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1095 Valid, 1922 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2550 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-22 13:09:09,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-22 13:09:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 537. [2024-11-22 13:09:09,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 491 states have (on average 1.4378818737270875) internal successors, (706), 492 states have internal predecessors, (706), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-22 13:09:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2024-11-22 13:09:09,237 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 153 [2024-11-22 13:09:09,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:09,237 INFO L471 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2024-11-22 13:09:09,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 3.210526315789474) internal successors, (61), 22 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:09,237 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2024-11-22 13:09:09,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:09:09,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:09,238 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:09,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 13:09:09,238 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:09,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:09,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1359358277, now seen corresponding path program 1 times [2024-11-22 13:09:09,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:09,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479475537] [2024-11-22 13:09:09,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:09,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:09,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:10,140 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:10,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:10,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479475537] [2024-11-22 13:09:10,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479475537] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:10,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:10,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-22 13:09:10,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059195213] [2024-11-22 13:09:10,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:10,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 13:09:10,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:10,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 13:09:10,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-22 13:09:10,145 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:10,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:10,849 INFO L93 Difference]: Finished difference Result 1195 states and 1747 transitions. [2024-11-22 13:09:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 13:09:10,850 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 153 [2024-11-22 13:09:10,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:10,852 INFO L225 Difference]: With dead ends: 1195 [2024-11-22 13:09:10,852 INFO L226 Difference]: Without dead ends: 661 [2024-11-22 13:09:10,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:09:10,858 INFO L432 NwaCegarLoop]: 201 mSDtfsCounter, 79 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:10,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 1014 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:09:10,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 661 states. [2024-11-22 13:09:10,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 661 to 592. [2024-11-22 13:09:10,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 541 states have (on average 1.4177449168207024) internal successors, (767), 543 states have internal predecessors, (767), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:09:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 859 transitions. [2024-11-22 13:09:10,897 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 859 transitions. Word has length 153 [2024-11-22 13:09:10,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:10,897 INFO L471 AbstractCegarLoop]: Abstraction has 592 states and 859 transitions. [2024-11-22 13:09:10,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 8.714285714285714) internal successors, (61), 9 states have internal predecessors, (61), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:10,897 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 859 transitions. [2024-11-22 13:09:10,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-22 13:09:10,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:10,900 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:10,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 13:09:10,900 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:10,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:10,900 INFO L85 PathProgramCache]: Analyzing trace with hash -507311415, now seen corresponding path program 1 times [2024-11-22 13:09:10,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:10,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502009050] [2024-11-22 13:09:10,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:10,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:10,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:11,974 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:11,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:11,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502009050] [2024-11-22 13:09:11,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502009050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:11,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:11,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 13:09:11,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078615958] [2024-11-22 13:09:11,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:11,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 13:09:11,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:11,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 13:09:11,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-22 13:09:11,976 INFO L87 Difference]: Start difference. First operand 592 states and 859 transitions. Second operand has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:12,716 INFO L93 Difference]: Finished difference Result 1287 states and 1867 transitions. [2024-11-22 13:09:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 13:09:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 153 [2024-11-22 13:09:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:12,722 INFO L225 Difference]: With dead ends: 1287 [2024-11-22 13:09:12,722 INFO L226 Difference]: Without dead ends: 698 [2024-11-22 13:09:12,724 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-11-22 13:09:12,725 INFO L432 NwaCegarLoop]: 213 mSDtfsCounter, 62 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:12,725 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1287 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:09:12,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2024-11-22 13:09:12,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 628. [2024-11-22 13:09:12,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 577 states have (on average 1.4211438474870017) internal successors, (820), 579 states have internal predecessors, (820), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:09:12,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 912 transitions. [2024-11-22 13:09:12,745 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 912 transitions. Word has length 153 [2024-11-22 13:09:12,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:12,745 INFO L471 AbstractCegarLoop]: Abstraction has 628 states and 912 transitions. [2024-11-22 13:09:12,746 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 7 states have (on average 8.714285714285714) internal successors, (61), 10 states have internal predecessors, (61), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:12,746 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 912 transitions. [2024-11-22 13:09:12,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-22 13:09:12,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:12,747 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:12,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 13:09:12,747 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:12,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:12,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1669219568, now seen corresponding path program 1 times [2024-11-22 13:09:12,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:12,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319694910] [2024-11-22 13:09:12,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:12,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:12,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:12,803 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:12,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:12,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319694910] [2024-11-22 13:09:12,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319694910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:12,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:12,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 13:09:12,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904917027] [2024-11-22 13:09:12,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:12,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 13:09:12,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:12,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 13:09:12,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:09:12,806 INFO L87 Difference]: Start difference. First operand 628 states and 912 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:09:12,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:12,887 INFO L93 Difference]: Finished difference Result 1248 states and 1813 transitions. [2024-11-22 13:09:12,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 13:09:12,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) Word has length 154 [2024-11-22 13:09:12,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:12,892 INFO L225 Difference]: With dead ends: 1248 [2024-11-22 13:09:12,893 INFO L226 Difference]: Without dead ends: 623 [2024-11-22 13:09:12,894 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 13:09:12,894 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 0 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:12,895 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 344 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 13:09:12,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2024-11-22 13:09:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 623. [2024-11-22 13:09:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 623 states, 572 states have (on average 1.416083916083916) internal successors, (810), 574 states have internal predecessors, (810), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:09:12,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 902 transitions. [2024-11-22 13:09:12,934 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 902 transitions. Word has length 154 [2024-11-22 13:09:12,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:12,934 INFO L471 AbstractCegarLoop]: Abstraction has 623 states and 902 transitions. [2024-11-22 13:09:12,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 1 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 1 states have call successors, (19) [2024-11-22 13:09:12,935 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 902 transitions. [2024-11-22 13:09:12,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:12,936 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:12,936 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:12,936 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 13:09:12,936 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:12,937 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1902565229, now seen corresponding path program 1 times [2024-11-22 13:09:12,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:12,937 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022438579] [2024-11-22 13:09:12,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:12,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:12,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:14,356 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:14,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:14,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022438579] [2024-11-22 13:09:14,357 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022438579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:14,357 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:14,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:09:14,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792123062] [2024-11-22 13:09:14,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:14,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:09:14,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:14,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:09:14,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:09:14,361 INFO L87 Difference]: Start difference. First operand 623 states and 902 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:15,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:15,640 INFO L93 Difference]: Finished difference Result 1377 states and 1992 transitions. [2024-11-22 13:09:15,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:09:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-22 13:09:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:15,644 INFO L225 Difference]: With dead ends: 1377 [2024-11-22 13:09:15,644 INFO L226 Difference]: Without dead ends: 757 [2024-11-22 13:09:15,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:09:15,651 INFO L432 NwaCegarLoop]: 177 mSDtfsCounter, 74 mSDsluCounter, 1618 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1795 SdHoareTripleChecker+Invalid, 1311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:15,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1795 Invalid, 1311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:09:15,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2024-11-22 13:09:15,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 675. [2024-11-22 13:09:15,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 624 states have (on average 1.4230769230769231) internal successors, (888), 626 states have internal predecessors, (888), 46 states have call successors, (46), 4 states have call predecessors, (46), 4 states have return successors, (46), 44 states have call predecessors, (46), 46 states have call successors, (46) [2024-11-22 13:09:15,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 980 transitions. [2024-11-22 13:09:15,691 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 980 transitions. Word has length 155 [2024-11-22 13:09:15,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:15,691 INFO L471 AbstractCegarLoop]: Abstraction has 675 states and 980 transitions. [2024-11-22 13:09:15,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 15 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:15,692 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 980 transitions. [2024-11-22 13:09:15,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:15,696 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:15,696 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:15,696 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 13:09:15,696 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:15,697 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:15,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2134236629, now seen corresponding path program 1 times [2024-11-22 13:09:15,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:15,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84024573] [2024-11-22 13:09:15,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:15,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:16,714 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:16,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:16,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84024573] [2024-11-22 13:09:16,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84024573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:16,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:16,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:09:16,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313132726] [2024-11-22 13:09:16,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:16,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:09:16,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:16,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:09:16,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:09:16,716 INFO L87 Difference]: Start difference. First operand 675 states and 980 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:17,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:17,250 INFO L93 Difference]: Finished difference Result 1499 states and 2170 transitions. [2024-11-22 13:09:17,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:09:17,253 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:17,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:17,256 INFO L225 Difference]: With dead ends: 1499 [2024-11-22 13:09:17,256 INFO L226 Difference]: Without dead ends: 827 [2024-11-22 13:09:17,262 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:09:17,262 INFO L432 NwaCegarLoop]: 198 mSDtfsCounter, 78 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 648 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:17,262 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 757 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 648 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:09:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2024-11-22 13:09:17,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 823. [2024-11-22 13:09:17,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 823 states, 758 states have (on average 1.4116094986807388) internal successors, (1070), 762 states have internal predecessors, (1070), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-22 13:09:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1186 transitions. [2024-11-22 13:09:17,316 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1186 transitions. Word has length 155 [2024-11-22 13:09:17,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:17,316 INFO L471 AbstractCegarLoop]: Abstraction has 823 states and 1186 transitions. [2024-11-22 13:09:17,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:17,317 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1186 transitions. [2024-11-22 13:09:17,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:17,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:17,318 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:17,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 13:09:17,318 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:17,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:17,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1381284817, now seen corresponding path program 1 times [2024-11-22 13:09:17,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:17,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340370823] [2024-11-22 13:09:17,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:17,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:18,089 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:18,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:18,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340370823] [2024-11-22 13:09:18,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340370823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:18,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:18,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:09:18,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869038536] [2024-11-22 13:09:18,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:18,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:09:18,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:18,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:09:18,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:09:18,091 INFO L87 Difference]: Start difference. First operand 823 states and 1186 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:18,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:18,488 INFO L93 Difference]: Finished difference Result 1823 states and 2626 transitions. [2024-11-22 13:09:18,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:09:18,489 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-22 13:09:18,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:18,492 INFO L225 Difference]: With dead ends: 1823 [2024-11-22 13:09:18,492 INFO L226 Difference]: Without dead ends: 1003 [2024-11-22 13:09:18,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:09:18,493 INFO L432 NwaCegarLoop]: 179 mSDtfsCounter, 65 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:18,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 679 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 13:09:18,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2024-11-22 13:09:18,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 865. [2024-11-22 13:09:18,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 865 states, 800 states have (on average 1.4125) internal successors, (1130), 804 states have internal predecessors, (1130), 58 states have call successors, (58), 6 states have call predecessors, (58), 6 states have return successors, (58), 54 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-22 13:09:18,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 865 states to 865 states and 1246 transitions. [2024-11-22 13:09:18,519 INFO L78 Accepts]: Start accepts. Automaton has 865 states and 1246 transitions. Word has length 155 [2024-11-22 13:09:18,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:18,519 INFO L471 AbstractCegarLoop]: Abstraction has 865 states and 1246 transitions. [2024-11-22 13:09:18,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:18,519 INFO L276 IsEmpty]: Start isEmpty. Operand 865 states and 1246 transitions. [2024-11-22 13:09:18,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:18,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:18,521 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:18,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 13:09:18,521 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:18,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:18,521 INFO L85 PathProgramCache]: Analyzing trace with hash -469174033, now seen corresponding path program 1 times [2024-11-22 13:09:18,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:18,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257626241] [2024-11-22 13:09:18,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:18,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:18,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:19,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:19,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257626241] [2024-11-22 13:09:19,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257626241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:19,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:19,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 13:09:19,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798022946] [2024-11-22 13:09:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:19,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 13:09:19,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 13:09:19,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:09:19,302 INFO L87 Difference]: Start difference. First operand 865 states and 1246 transitions. Second operand has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:19,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:19,842 INFO L93 Difference]: Finished difference Result 1838 states and 2639 transitions. [2024-11-22 13:09:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 13:09:19,843 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:19,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:19,846 INFO L225 Difference]: With dead ends: 1838 [2024-11-22 13:09:19,846 INFO L226 Difference]: Without dead ends: 976 [2024-11-22 13:09:19,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-22 13:09:19,850 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 80 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 767 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:19,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 767 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 13:09:19,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2024-11-22 13:09:19,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 874. [2024-11-22 13:09:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 804 states have (on average 1.4067164179104477) internal successors, (1131), 809 states have internal predecessors, (1131), 62 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 13:09:19,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1255 transitions. [2024-11-22 13:09:19,879 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1255 transitions. Word has length 155 [2024-11-22 13:09:19,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:19,879 INFO L471 AbstractCegarLoop]: Abstraction has 874 states and 1255 transitions. [2024-11-22 13:09:19,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 12.6) internal successors, (63), 7 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:19,880 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1255 transitions. [2024-11-22 13:09:19,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:19,881 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:19,881 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:19,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-22 13:09:19,881 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:19,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:19,882 INFO L85 PathProgramCache]: Analyzing trace with hash -211008595, now seen corresponding path program 1 times [2024-11-22 13:09:19,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:19,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150601569] [2024-11-22 13:09:19,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:19,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:19,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:21,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:21,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150601569] [2024-11-22 13:09:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150601569] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 13:09:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192599209] [2024-11-22 13:09:21,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:21,641 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:09:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:09:21,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:09:21,642 INFO L87 Difference]: Start difference. First operand 874 states and 1255 transitions. Second operand has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:23,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:23,589 INFO L93 Difference]: Finished difference Result 1862 states and 2670 transitions. [2024-11-22 13:09:23,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:09:23,590 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:23,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:23,593 INFO L225 Difference]: With dead ends: 1862 [2024-11-22 13:09:23,593 INFO L226 Difference]: Without dead ends: 1004 [2024-11-22 13:09:23,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=566, Unknown=0, NotChecked=0, Total=650 [2024-11-22 13:09:23,595 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 171 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2304 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:23,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2304 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1785 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-22 13:09:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2024-11-22 13:09:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 896. [2024-11-22 13:09:23,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 826 states have (on average 1.4067796610169492) internal successors, (1162), 831 states have internal predecessors, (1162), 62 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 13:09:23,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1286 transitions. [2024-11-22 13:09:23,621 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1286 transitions. Word has length 155 [2024-11-22 13:09:23,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:23,621 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1286 transitions. [2024-11-22 13:09:23,621 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:23,621 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1286 transitions. [2024-11-22 13:09:23,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:23,622 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:23,622 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:23,623 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-22 13:09:23,623 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:23,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:23,623 INFO L85 PathProgramCache]: Analyzing trace with hash -76995089, now seen corresponding path program 1 times [2024-11-22 13:09:23,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:23,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974503394] [2024-11-22 13:09:23,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:23,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:24,760 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:24,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:24,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974503394] [2024-11-22 13:09:24,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974503394] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:24,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:24,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 13:09:24,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802691330] [2024-11-22 13:09:24,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:24,762 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 13:09:24,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:24,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 13:09:24,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2024-11-22 13:09:24,763 INFO L87 Difference]: Start difference. First operand 896 states and 1286 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:25,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:25,574 INFO L93 Difference]: Finished difference Result 1390 states and 1991 transitions. [2024-11-22 13:09:25,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 13:09:25,574 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-22 13:09:25,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:25,581 INFO L225 Difference]: With dead ends: 1390 [2024-11-22 13:09:25,581 INFO L226 Difference]: Without dead ends: 971 [2024-11-22 13:09:25,582 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-11-22 13:09:25,586 INFO L432 NwaCegarLoop]: 210 mSDtfsCounter, 64 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 1048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:25,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1693 Invalid, 1048 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 13:09:25,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2024-11-22 13:09:25,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 878. [2024-11-22 13:09:25,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 808 states have (on average 1.4047029702970297) internal successors, (1135), 813 states have internal predecessors, (1135), 62 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 13:09:25,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1259 transitions. [2024-11-22 13:09:25,644 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1259 transitions. Word has length 155 [2024-11-22 13:09:25,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:25,644 INFO L471 AbstractCegarLoop]: Abstraction has 878 states and 1259 transitions. [2024-11-22 13:09:25,644 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:25,644 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1259 transitions. [2024-11-22 13:09:25,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:25,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:25,645 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:25,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-22 13:09:25,646 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:25,646 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:25,646 INFO L85 PathProgramCache]: Analyzing trace with hash 516361835, now seen corresponding path program 1 times [2024-11-22 13:09:25,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:25,646 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832082320] [2024-11-22 13:09:25,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:25,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:26,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:26,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832082320] [2024-11-22 13:09:26,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832082320] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:26,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:26,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 13:09:26,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476767595] [2024-11-22 13:09:26,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:26,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 13:09:26,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:26,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 13:09:26,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 13:09:26,412 INFO L87 Difference]: Start difference. First operand 878 states and 1259 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:26,871 INFO L93 Difference]: Finished difference Result 1804 states and 2588 transitions. [2024-11-22 13:09:26,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 13:09:26,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 155 [2024-11-22 13:09:26,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:26,874 INFO L225 Difference]: With dead ends: 1804 [2024-11-22 13:09:26,874 INFO L226 Difference]: Without dead ends: 942 [2024-11-22 13:09:26,875 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-22 13:09:26,876 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 63 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:26,876 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 712 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 13:09:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-22 13:09:26,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 878. [2024-11-22 13:09:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 808 states have (on average 1.3997524752475248) internal successors, (1131), 813 states have internal predecessors, (1131), 62 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (62), 57 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-22 13:09:26,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1255 transitions. [2024-11-22 13:09:26,901 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1255 transitions. Word has length 155 [2024-11-22 13:09:26,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:26,901 INFO L471 AbstractCegarLoop]: Abstraction has 878 states and 1255 transitions. [2024-11-22 13:09:26,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-22 13:09:26,901 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1255 transitions. [2024-11-22 13:09:26,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:26,902 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:26,902 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:26,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 13:09:26,903 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:26,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:26,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1527479085, now seen corresponding path program 1 times [2024-11-22 13:09:26,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:26,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793484235] [2024-11-22 13:09:26,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:26,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:26,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:28,130 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:28,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:28,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793484235] [2024-11-22 13:09:28,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793484235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:28,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:28,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 13:09:28,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671543713] [2024-11-22 13:09:28,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:28,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:09:28,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:28,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:09:28,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:09:28,132 INFO L87 Difference]: Start difference. First operand 878 states and 1255 transitions. Second operand has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:29,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:29,667 INFO L93 Difference]: Finished difference Result 1902 states and 2711 transitions. [2024-11-22 13:09:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:09:29,668 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:29,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:29,672 INFO L225 Difference]: With dead ends: 1902 [2024-11-22 13:09:29,672 INFO L226 Difference]: Without dead ends: 1040 [2024-11-22 13:09:29,673 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=479, Unknown=0, NotChecked=0, Total=552 [2024-11-22 13:09:29,673 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 157 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 1700 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 1714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:29,674 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 2123 Invalid, 1714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1700 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 13:09:29,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2024-11-22 13:09:29,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 978. [2024-11-22 13:09:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 903 states have (on average 1.397563676633444) internal successors, (1262), 909 states have internal predecessors, (1262), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 13:09:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1394 transitions. [2024-11-22 13:09:29,732 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1394 transitions. Word has length 155 [2024-11-22 13:09:29,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:29,736 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1394 transitions. [2024-11-22 13:09:29,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:29,736 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1394 transitions. [2024-11-22 13:09:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:29,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:29,737 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:29,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-22 13:09:29,738 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:29,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:29,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1661492591, now seen corresponding path program 1 times [2024-11-22 13:09:29,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:29,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883696383] [2024-11-22 13:09:29,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:29,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:30,976 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:30,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:30,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883696383] [2024-11-22 13:09:30,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883696383] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:30,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:30,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:09:30,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920230887] [2024-11-22 13:09:30,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:30,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:09:30,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:30,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:09:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:09:30,981 INFO L87 Difference]: Start difference. First operand 978 states and 1394 transitions. Second operand has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:32,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:32,198 INFO L93 Difference]: Finished difference Result 1464 states and 2082 transitions. [2024-11-22 13:09:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:09:32,204 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:32,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:32,208 INFO L225 Difference]: With dead ends: 1464 [2024-11-22 13:09:32,208 INFO L226 Difference]: Without dead ends: 995 [2024-11-22 13:09:32,212 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:09:32,213 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 77 mSDsluCounter, 1797 mSDsCounter, 0 mSdLazyCounter, 1437 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2021 SdHoareTripleChecker+Invalid, 1443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:32,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2021 Invalid, 1443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1437 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:09:32,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 995 states. [2024-11-22 13:09:32,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 995 to 955. [2024-11-22 13:09:32,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 880 states have (on average 1.396590909090909) internal successors, (1229), 886 states have internal predecessors, (1229), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 13:09:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1361 transitions. [2024-11-22 13:09:32,272 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1361 transitions. Word has length 155 [2024-11-22 13:09:32,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:32,272 INFO L471 AbstractCegarLoop]: Abstraction has 955 states and 1361 transitions. [2024-11-22 13:09:32,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:32,273 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1361 transitions. [2024-11-22 13:09:32,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:32,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:32,278 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:32,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-22 13:09:32,278 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:32,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:32,278 INFO L85 PathProgramCache]: Analyzing trace with hash -586094739, now seen corresponding path program 1 times [2024-11-22 13:09:32,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:32,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897283573] [2024-11-22 13:09:32,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:32,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:33,847 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:33,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:33,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897283573] [2024-11-22 13:09:33,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897283573] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:33,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:33,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-22 13:09:33,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345381721] [2024-11-22 13:09:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:33,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 13:09:33,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 13:09:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=272, Unknown=0, NotChecked=0, Total=306 [2024-11-22 13:09:33,849 INFO L87 Difference]: Start difference. First operand 955 states and 1361 transitions. Second operand has 18 states, 15 states have (on average 4.2) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:36,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:36,011 INFO L93 Difference]: Finished difference Result 2063 states and 2931 transitions. [2024-11-22 13:09:36,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 13:09:36,012 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.2) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) Word has length 155 [2024-11-22 13:09:36,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:36,020 INFO L225 Difference]: With dead ends: 2063 [2024-11-22 13:09:36,021 INFO L226 Difference]: Without dead ends: 1111 [2024-11-22 13:09:36,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-22 13:09:36,022 INFO L432 NwaCegarLoop]: 229 mSDtfsCounter, 189 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 2311 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 2311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:36,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 2583 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 2311 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-22 13:09:36,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-11-22 13:09:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 972. [2024-11-22 13:09:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 897 states have (on average 1.3979933110367893) internal successors, (1254), 903 states have internal predecessors, (1254), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 13:09:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1386 transitions. [2024-11-22 13:09:36,114 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1386 transitions. Word has length 155 [2024-11-22 13:09:36,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:36,115 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1386 transitions. [2024-11-22 13:09:36,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.2) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 4 states have call successors, (19) [2024-11-22 13:09:36,115 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1386 transitions. [2024-11-22 13:09:36,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:36,116 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:36,116 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:36,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 13:09:36,116 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:36,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash -452081233, now seen corresponding path program 1 times [2024-11-22 13:09:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088730311] [2024-11-22 13:09:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:37,236 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:37,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:37,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088730311] [2024-11-22 13:09:37,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088730311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:37,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:37,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-22 13:09:37,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189428912] [2024-11-22 13:09:37,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:37,237 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 13:09:37,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:37,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 13:09:37,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2024-11-22 13:09:37,238 INFO L87 Difference]: Start difference. First operand 972 states and 1386 transitions. Second operand has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:38,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:38,362 INFO L93 Difference]: Finished difference Result 1532 states and 2176 transitions. [2024-11-22 13:09:38,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 13:09:38,362 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:38,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:38,366 INFO L225 Difference]: With dead ends: 1532 [2024-11-22 13:09:38,366 INFO L226 Difference]: Without dead ends: 1066 [2024-11-22 13:09:38,368 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=401, Unknown=0, NotChecked=0, Total=462 [2024-11-22 13:09:38,371 INFO L432 NwaCegarLoop]: 225 mSDtfsCounter, 77 mSDsluCounter, 1794 mSDsCounter, 0 mSdLazyCounter, 1463 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 2019 SdHoareTripleChecker+Invalid, 1469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:38,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 2019 Invalid, 1469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1463 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 13:09:38,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-11-22 13:09:38,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 949. [2024-11-22 13:09:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 874 states have (on average 1.397025171624714) internal successors, (1221), 880 states have internal predecessors, (1221), 66 states have call successors, (66), 8 states have call predecessors, (66), 8 states have return successors, (66), 60 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 13:09:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1353 transitions. [2024-11-22 13:09:38,439 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1353 transitions. Word has length 155 [2024-11-22 13:09:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:38,442 INFO L471 AbstractCegarLoop]: Abstraction has 949 states and 1353 transitions. [2024-11-22 13:09:38,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.846153846153846) internal successors, (63), 15 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:38,443 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1353 transitions. [2024-11-22 13:09:38,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:38,444 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:38,444 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:38,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 13:09:38,444 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:38,445 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:38,445 INFO L85 PathProgramCache]: Analyzing trace with hash 515215021, now seen corresponding path program 1 times [2024-11-22 13:09:38,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:38,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710516791] [2024-11-22 13:09:38,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:38,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 13:09:39,645 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 684 trivial. 0 not checked. [2024-11-22 13:09:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 13:09:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710516791] [2024-11-22 13:09:39,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710516791] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 13:09:39,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 13:09:39,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-22 13:09:39,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52239376] [2024-11-22 13:09:39,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 13:09:39,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 13:09:39,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 13:09:39,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 13:09:39,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2024-11-22 13:09:39,647 INFO L87 Difference]: Start difference. First operand 949 states and 1353 transitions. Second operand has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:40,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 13:09:40,948 INFO L93 Difference]: Finished difference Result 2136 states and 3041 transitions. [2024-11-22 13:09:40,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 13:09:40,948 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) Word has length 155 [2024-11-22 13:09:40,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 13:09:40,952 INFO L225 Difference]: With dead ends: 2136 [2024-11-22 13:09:40,952 INFO L226 Difference]: Without dead ends: 1190 [2024-11-22 13:09:40,953 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2024-11-22 13:09:40,953 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 83 mSDsluCounter, 1839 mSDsCounter, 0 mSdLazyCounter, 1515 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 2026 SdHoareTripleChecker+Invalid, 1521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 13:09:40,954 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 2026 Invalid, 1521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1515 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 13:09:40,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2024-11-22 13:09:40,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1185. [2024-11-22 13:09:40,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1101 states have (on average 1.399636693914623) internal successors, (1541), 1110 states have internal predecessors, (1541), 72 states have call successors, (72), 11 states have call predecessors, (72), 11 states have return successors, (72), 63 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-22 13:09:40,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1685 transitions. [2024-11-22 13:09:40,987 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1685 transitions. Word has length 155 [2024-11-22 13:09:40,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 13:09:40,987 INFO L471 AbstractCegarLoop]: Abstraction has 1185 states and 1685 transitions. [2024-11-22 13:09:40,987 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 4.2) internal successors, (63), 17 states have internal predecessors, (63), 3 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 1 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-22 13:09:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1685 transitions. [2024-11-22 13:09:40,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-22 13:09:40,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 13:09:40,989 INFO L215 NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 13:09:40,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-22 13:09:40,989 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 13:09:40,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 13:09:40,989 INFO L85 PathProgramCache]: Analyzing trace with hash -71590993, now seen corresponding path program 1 times [2024-11-22 13:09:40,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 13:09:40,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4296353] [2024-11-22 13:09:40,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 13:09:40,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 13:09:41,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat