./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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-sp_file-2.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 c554ccc5a601f8437729d4334efbdb5f23a6f490bc0338089a1c3e75130cdbec --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:14:55,280 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:14:55,353 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:14:55,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:14:55,362 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:14:55,383 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:14:55,384 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:14:55,384 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:14:55,385 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:14:55,385 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:14:55,386 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:14:55,386 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:14:55,387 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:14:55,387 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:14:55,387 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:14:55,388 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:14:55,388 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:14:55,389 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:14:55,389 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:14:55,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:14:55,390 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:14:55,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:14:55,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:14:55,391 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:14:55,391 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:14:55,391 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:14:55,391 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:14:55,392 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:14:55,392 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:14:55,392 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:14:55,393 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:14:55,393 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:14:55,395 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:14:55,395 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:14:55,395 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:14:55,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:14:55,396 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:14:55,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:14:55,396 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:14:55,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:14:55,397 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:14:55,397 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:14:55,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c554ccc5a601f8437729d4334efbdb5f23a6f490bc0338089a1c3e75130cdbec [2024-11-19 01:14:55,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:14:55,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:14:55,715 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:14:55,716 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:14:55,716 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:14:55,717 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i [2024-11-19 01:14:57,142 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:14:57,372 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:14:57,373 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-2.i [2024-11-19 01:14:57,382 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f861b6eb6/119ab9bd0bac4c638f541d9cb7ffbdde/FLAG0dd3f084f [2024-11-19 01:14:57,395 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f861b6eb6/119ab9bd0bac4c638f541d9cb7ffbdde [2024-11-19 01:14:57,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:14:57,399 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:14:57,401 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:14:57,401 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:14:57,407 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:14:57,408 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,409 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@577a807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57, skipping insertion in model container [2024-11-19 01:14:57,411 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,439 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:14:57,623 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-sp_file-2.i[916,929] [2024-11-19 01:14:57,691 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:14:57,704 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:14:57,716 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-sp_file-2.i[916,929] [2024-11-19 01:14:57,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:14:57,815 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:14:57,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57 WrapperNode [2024-11-19 01:14:57,816 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:14:57,817 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:14:57,818 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:14:57,818 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:14:57,829 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,851 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,893 INFO L138 Inliner]: procedures = 30, calls = 155, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 522 [2024-11-19 01:14:57,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:14:57,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:14:57,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:14:57,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:14:57,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,923 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:14:57,924 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,924 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,942 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,954 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,957 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:14:57,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:14:57,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:14:57,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:14:57,974 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (1/1) ... [2024-11-19 01:14:57,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:14:57,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:58,016 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) [2024-11-19 01:14:58,019 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 [2024-11-19 01:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:14:58,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:14:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:14:58,073 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:14:58,074 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:14:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:14:58,074 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:14:58,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:14:58,273 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:14:58,275 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:14:58,839 INFO L? ?]: Removed 147 outVars from TransFormulas that were not future-live. [2024-11-19 01:14:58,839 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:14:58,860 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:14:58,860 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:14:58,861 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:14:58 BoogieIcfgContainer [2024-11-19 01:14:58,861 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:14:58,865 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:14:58,865 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:14:58,868 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:14:58,869 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:14:57" (1/3) ... [2024-11-19 01:14:58,869 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530a1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:14:58, skipping insertion in model container [2024-11-19 01:14:58,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:14:57" (2/3) ... [2024-11-19 01:14:58,871 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@530a1a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:14:58, skipping insertion in model container [2024-11-19 01:14:58,871 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:14:58" (3/3) ... [2024-11-19 01:14:58,873 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-2.i [2024-11-19 01:14:58,891 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:14:58,891 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:14:58,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:14:58,981 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;@4612d012, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:14:58,981 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:14:58,986 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:14:59,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 01:14:59,003 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:59,004 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:59,005 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:14:59,012 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:14:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 430417907, now seen corresponding path program 1 times [2024-11-19 01:14:59,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:14:59,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111127031] [2024-11-19 01:14:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:59,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:14:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:59,453 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-19 01:14:59,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:14:59,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111127031] [2024-11-19 01:14:59,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111127031] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:14:59,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253986447] [2024-11-19 01:14:59,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:14:59,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:14:59,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:14:59,458 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) [2024-11-19 01:14:59,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:14:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:14:59,729 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:14:59,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:14:59,758 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-19 01:14:59,758 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:14:59,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1253986447] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:14:59,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:14:59,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:14:59,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895549505] [2024-11-19 01:14:59,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:14:59,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:14:59,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:14:59,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:14:59,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:59,798 INFO L87 Difference]: Start difference. First operand has 104 states, 89 states have (on average 1.4606741573033708) internal successors, (130), 90 states have internal predecessors, (130), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:59,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:14:59,837 INFO L93 Difference]: Finished difference Result 201 states and 314 transitions. [2024-11-19 01:14:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:14:59,840 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2024-11-19 01:14:59,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:14:59,852 INFO L225 Difference]: With dead ends: 201 [2024-11-19 01:14:59,853 INFO L226 Difference]: Without dead ends: 100 [2024-11-19 01:14:59,857 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:14:59,861 INFO L432 NwaCegarLoop]: 147 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, 147 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 [2024-11-19 01:14:59,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:14:59,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-19 01:14:59,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-19 01:14:59,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 86 states have (on average 1.430232558139535) internal successors, (123), 86 states have internal predecessors, (123), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:14:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 147 transitions. [2024-11-19 01:14:59,902 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 147 transitions. Word has length 100 [2024-11-19 01:14:59,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:14:59,903 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 147 transitions. [2024-11-19 01:14:59,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:14:59,904 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 147 transitions. [2024-11-19 01:14:59,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-19 01:14:59,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:14:59,911 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:14:59,931 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:15:00,111 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 [2024-11-19 01:15:00,112 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:00,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:00,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1747627975, now seen corresponding path program 1 times [2024-11-19 01:15:00,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:00,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433525280] [2024-11-19 01:15:00,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:00,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:00,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:00,565 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2024-11-19 01:15:00,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:00,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433525280] [2024-11-19 01:15:00,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433525280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:15:00,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660725358] [2024-11-19 01:15:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:00,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:00,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:15:00,570 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) [2024-11-19 01:15:00,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:15:00,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:00,791 INFO L255 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-19 01:15:00,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:15:00,839 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:00,839 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:15:00,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660725358] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:00,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:15:00,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 7 [2024-11-19 01:15:00,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032664966] [2024-11-19 01:15:00,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:00,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:15:00,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:00,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:15:00,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:15:00,843 INFO L87 Difference]: Start difference. First operand 100 states and 147 transitions. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:00,876 INFO L93 Difference]: Finished difference Result 199 states and 294 transitions. [2024-11-19 01:15:00,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:15:00,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 100 [2024-11-19 01:15:00,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:00,878 INFO L225 Difference]: With dead ends: 199 [2024-11-19 01:15:00,879 INFO L226 Difference]: Without dead ends: 102 [2024-11-19 01:15:00,879 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:15:00,881 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 424 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 [2024-11-19 01:15:00,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 424 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:15:00,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-19 01:15:00,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2024-11-19 01:15:00,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 88 states have (on average 1.4204545454545454) internal successors, (125), 88 states have internal predecessors, (125), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:15:00,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2024-11-19 01:15:00,893 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 100 [2024-11-19 01:15:00,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:00,898 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2024-11-19 01:15:00,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:00,900 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2024-11-19 01:15:00,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-19 01:15:00,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:00,906 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:00,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:15:01,106 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,SelfDestructingSolverStorable1 [2024-11-19 01:15:01,108 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:01,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:01,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1143937423, now seen corresponding path program 1 times [2024-11-19 01:15:01,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:01,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255253393] [2024-11-19 01:15:01,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:01,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:01,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:01,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255253393] [2024-11-19 01:15:01,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255253393] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:01,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:01,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:15:01,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580958809] [2024-11-19 01:15:01,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:01,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:15:01,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:01,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:15:01,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:15:01,375 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:01,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:01,433 INFO L93 Difference]: Finished difference Result 245 states and 361 transitions. [2024-11-19 01:15:01,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:15:01,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 103 [2024-11-19 01:15:01,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:01,436 INFO L225 Difference]: With dead ends: 245 [2024-11-19 01:15:01,436 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 01:15:01,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:15:01,442 INFO L432 NwaCegarLoop]: 147 mSDtfsCounter, 60 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:01,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 288 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:15:01,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 01:15:01,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 119. [2024-11-19 01:15:01,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 105 states have (on average 1.4476190476190476) internal successors, (152), 105 states have internal predecessors, (152), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:15:01,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 176 transitions. [2024-11-19 01:15:01,459 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 176 transitions. Word has length 103 [2024-11-19 01:15:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:01,460 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 176 transitions. [2024-11-19 01:15:01,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 176 transitions. [2024-11-19 01:15:01,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-19 01:15:01,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:01,469 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:01,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:15:01,469 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:01,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:01,470 INFO L85 PathProgramCache]: Analyzing trace with hash -861740552, now seen corresponding path program 1 times [2024-11-19 01:15:01,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:01,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455745887] [2024-11-19 01:15:01,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:01,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:04,195 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:04,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:04,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455745887] [2024-11-19 01:15:04,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455745887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:04,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:04,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:15:04,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790355137] [2024-11-19 01:15:04,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:04,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:15:04,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:04,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:15:04,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:04,201 INFO L87 Difference]: Start difference. First operand 119 states and 176 transitions. Second operand has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:05,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:05,282 INFO L93 Difference]: Finished difference Result 289 states and 426 transitions. [2024-11-19 01:15:05,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-19 01:15:05,283 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2024-11-19 01:15:05,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:05,287 INFO L225 Difference]: With dead ends: 289 [2024-11-19 01:15:05,287 INFO L226 Difference]: Without dead ends: 173 [2024-11-19 01:15:05,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:15:05,289 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 394 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:05,292 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [395 Valid, 688 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:15:05,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-19 01:15:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 147. [2024-11-19 01:15:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 133 states have (on average 1.4511278195488722) internal successors, (193), 133 states have internal predecessors, (193), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 01:15:05,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 217 transitions. [2024-11-19 01:15:05,315 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 217 transitions. Word has length 103 [2024-11-19 01:15:05,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:05,316 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 217 transitions. [2024-11-19 01:15:05,316 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.5384615384615383) internal successors, (46), 14 states have internal predecessors, (46), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:05,316 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 217 transitions. [2024-11-19 01:15:05,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-19 01:15:05,321 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:05,322 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:05,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:15:05,322 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:05,322 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:05,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1680808867, now seen corresponding path program 1 times [2024-11-19 01:15:05,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:05,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741692473] [2024-11-19 01:15:05,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:05,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-19 01:15:05,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1550874052] [2024-11-19 01:15:05,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:05,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:05,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:15:05,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:15:05,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:15:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:05,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-19 01:15:05,813 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:15:05,878 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 40 [2024-11-19 01:15:05,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 51 [2024-11-19 01:15:06,236 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:06,237 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:15:06,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:06,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741692473] [2024-11-19 01:15:06,238 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-19 01:15:06,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550874052] [2024-11-19 01:15:06,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550874052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:06,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:06,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:15:06,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091868343] [2024-11-19 01:15:06,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:06,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:15:06,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:06,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:15:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:15:06,242 INFO L87 Difference]: Start difference. First operand 147 states and 217 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:06,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:06,433 INFO L93 Difference]: Finished difference Result 408 states and 605 transitions. [2024-11-19 01:15:06,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:15:06,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 105 [2024-11-19 01:15:06,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:06,436 INFO L225 Difference]: With dead ends: 408 [2024-11-19 01:15:06,436 INFO L226 Difference]: Without dead ends: 264 [2024-11-19 01:15:06,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:15:06,438 INFO L432 NwaCegarLoop]: 143 mSDtfsCounter, 97 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:06,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 363 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 01:15:06,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-19 01:15:06,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 218. [2024-11-19 01:15:06,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 191 states have (on average 1.4293193717277486) internal successors, (273), 191 states have internal predecessors, (273), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:06,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 321 transitions. [2024-11-19 01:15:06,461 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 321 transitions. Word has length 105 [2024-11-19 01:15:06,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:06,461 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 321 transitions. [2024-11-19 01:15:06,462 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:06,462 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 321 transitions. [2024-11-19 01:15:06,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 01:15:06,463 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:06,463 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:06,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 01:15:06,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:15:06,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:06,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:06,666 INFO L85 PathProgramCache]: Analyzing trace with hash 758996857, now seen corresponding path program 1 times [2024-11-19 01:15:06,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:06,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186206147] [2024-11-19 01:15:06,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:06,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:07,357 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:07,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:07,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186206147] [2024-11-19 01:15:07,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186206147] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:07,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:07,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 01:15:07,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222578482] [2024-11-19 01:15:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:07,359 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 01:15:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:07,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 01:15:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 01:15:07,360 INFO L87 Difference]: Start difference. First operand 218 states and 321 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:07,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:07,856 INFO L93 Difference]: Finished difference Result 425 states and 621 transitions. [2024-11-19 01:15:07,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:15:07,857 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2024-11-19 01:15:07,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:07,860 INFO L225 Difference]: With dead ends: 425 [2024-11-19 01:15:07,860 INFO L226 Difference]: Without dead ends: 281 [2024-11-19 01:15:07,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:15:07,862 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 358 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 291 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:07,863 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 291 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:15:07,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2024-11-19 01:15:07,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 228. [2024-11-19 01:15:07,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 201 states have (on average 1.4179104477611941) internal successors, (285), 201 states have internal predecessors, (285), 24 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:07,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 333 transitions. [2024-11-19 01:15:07,893 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 333 transitions. Word has length 106 [2024-11-19 01:15:07,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:07,896 INFO L471 AbstractCegarLoop]: Abstraction has 228 states and 333 transitions. [2024-11-19 01:15:07,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2024-11-19 01:15:07,896 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 333 transitions. [2024-11-19 01:15:07,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 01:15:07,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:07,898 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:07,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:15:07,898 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:07,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:07,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1460061435, now seen corresponding path program 1 times [2024-11-19 01:15:07,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:07,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343899702] [2024-11-19 01:15:07,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:07,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:08,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:11,310 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:11,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:11,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343899702] [2024-11-19 01:15:11,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343899702] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:11,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:11,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:15:11,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472081407] [2024-11-19 01:15:11,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:11,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:15:11,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:11,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:15:11,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:15:11,314 INFO L87 Difference]: Start difference. First operand 228 states and 333 transitions. Second operand has 13 states, 10 states have (on average 4.9) internal successors, (49), 13 states have internal predecessors, (49), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:12,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:12,715 INFO L93 Difference]: Finished difference Result 434 states and 640 transitions. [2024-11-19 01:15:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 4.9) internal successors, (49), 13 states have internal predecessors, (49), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2024-11-19 01:15:12,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:12,719 INFO L225 Difference]: With dead ends: 434 [2024-11-19 01:15:12,719 INFO L226 Difference]: Without dead ends: 280 [2024-11-19 01:15:12,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:15:12,723 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 231 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:12,724 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 464 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 01:15:12,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-11-19 01:15:12,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 268. [2024-11-19 01:15:12,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 240 states have (on average 1.425) internal successors, (342), 240 states have internal predecessors, (342), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:12,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 390 transitions. [2024-11-19 01:15:12,762 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 390 transitions. Word has length 106 [2024-11-19 01:15:12,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:12,762 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 390 transitions. [2024-11-19 01:15:12,763 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 4.9) internal successors, (49), 13 states have internal predecessors, (49), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:12,763 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 390 transitions. [2024-11-19 01:15:12,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-19 01:15:12,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:12,764 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:12,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:15:12,765 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:12,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:12,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1882763261, now seen corresponding path program 1 times [2024-11-19 01:15:12,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:12,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622856350] [2024-11-19 01:15:12,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:15,108 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:15,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622856350] [2024-11-19 01:15:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622856350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:15,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:15:15,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975554240] [2024-11-19 01:15:15,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:15,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:15:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:15,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:15:15,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:15:15,113 INFO L87 Difference]: Start difference. First operand 268 states and 390 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:16,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:16,933 INFO L93 Difference]: Finished difference Result 553 states and 809 transitions. [2024-11-19 01:15:16,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-19 01:15:16,934 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2024-11-19 01:15:16,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:16,936 INFO L225 Difference]: With dead ends: 553 [2024-11-19 01:15:16,936 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 01:15:16,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600 [2024-11-19 01:15:16,938 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 291 mSDsluCounter, 796 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 1178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:16,938 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 906 Invalid, 1178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1163 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 01:15:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 01:15:16,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 334. [2024-11-19 01:15:16,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 306 states have (on average 1.4444444444444444) internal successors, (442), 306 states have internal predecessors, (442), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 490 transitions. [2024-11-19 01:15:16,976 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 490 transitions. Word has length 106 [2024-11-19 01:15:16,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:16,977 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 490 transitions. [2024-11-19 01:15:16,977 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:16,977 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 490 transitions. [2024-11-19 01:15:16,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-19 01:15:16,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:16,978 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:16,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 01:15:16,979 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:16,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:16,979 INFO L85 PathProgramCache]: Analyzing trace with hash -318381270, now seen corresponding path program 1 times [2024-11-19 01:15:16,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:16,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557306578] [2024-11-19 01:15:16,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:16,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:18,073 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:18,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:18,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557306578] [2024-11-19 01:15:18,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557306578] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:18,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:18,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:15:18,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689997549] [2024-11-19 01:15:18,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:18,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:15:18,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:18,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:15:18,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:15:18,076 INFO L87 Difference]: Start difference. First operand 334 states and 490 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:18,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:18,777 INFO L93 Difference]: Finished difference Result 592 states and 869 transitions. [2024-11-19 01:15:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:15:18,778 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) Word has length 107 [2024-11-19 01:15:18,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:18,781 INFO L225 Difference]: With dead ends: 592 [2024-11-19 01:15:18,782 INFO L226 Difference]: Without dead ends: 387 [2024-11-19 01:15:18,784 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:15:18,785 INFO L432 NwaCegarLoop]: 128 mSDtfsCounter, 186 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:18,786 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 462 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:15:18,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2024-11-19 01:15:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 334. [2024-11-19 01:15:18,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 306 states have (on average 1.4444444444444444) internal successors, (442), 306 states have internal predecessors, (442), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:18,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 490 transitions. [2024-11-19 01:15:18,819 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 490 transitions. Word has length 107 [2024-11-19 01:15:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:18,819 INFO L471 AbstractCegarLoop]: Abstraction has 334 states and 490 transitions. [2024-11-19 01:15:18,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 1 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 1 states have call predecessors, (12), 1 states have call successors, (12) [2024-11-19 01:15:18,819 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 490 transitions. [2024-11-19 01:15:18,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-19 01:15:18,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:18,822 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:18,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:15:18,822 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:18,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:18,823 INFO L85 PathProgramCache]: Analyzing trace with hash 382683308, now seen corresponding path program 1 times [2024-11-19 01:15:18,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:18,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730988689] [2024-11-19 01:15:18,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:18,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:20,978 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:20,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:20,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730988689] [2024-11-19 01:15:20,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730988689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:20,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:20,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-19 01:15:20,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881542691] [2024-11-19 01:15:20,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:20,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-19 01:15:20,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:20,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-19 01:15:20,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:15:20,982 INFO L87 Difference]: Start difference. First operand 334 states and 490 transitions. Second operand has 13 states, 10 states have (on average 5.0) internal successors, (50), 13 states have internal predecessors, (50), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:22,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:22,104 INFO L93 Difference]: Finished difference Result 547 states and 809 transitions. [2024-11-19 01:15:22,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:15:22,105 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 5.0) internal successors, (50), 13 states have internal predecessors, (50), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) Word has length 107 [2024-11-19 01:15:22,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:22,108 INFO L225 Difference]: With dead ends: 547 [2024-11-19 01:15:22,108 INFO L226 Difference]: Without dead ends: 340 [2024-11-19 01:15:22,109 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:15:22,110 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 207 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:22,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 548 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:15:22,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2024-11-19 01:15:22,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 336. [2024-11-19 01:15:22,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 336 states, 308 states have (on average 1.4415584415584415) internal successors, (444), 308 states have internal predecessors, (444), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:22,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 492 transitions. [2024-11-19 01:15:22,141 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 492 transitions. Word has length 107 [2024-11-19 01:15:22,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:22,142 INFO L471 AbstractCegarLoop]: Abstraction has 336 states and 492 transitions. [2024-11-19 01:15:22,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 5.0) internal successors, (50), 13 states have internal predecessors, (50), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:22,142 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 492 transitions. [2024-11-19 01:15:22,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:15:22,143 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:22,143 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:22,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:15:22,143 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:22,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -180617415, now seen corresponding path program 1 times [2024-11-19 01:15:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113016093] [2024-11-19 01:15:22,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:22,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:25,260 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:25,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:25,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113016093] [2024-11-19 01:15:25,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113016093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:25,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:25,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:15:25,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602265146] [2024-11-19 01:15:25,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:25,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:15:25,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:25,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:15:25,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:25,263 INFO L87 Difference]: Start difference. First operand 336 states and 492 transitions. Second operand has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:26,859 INFO L93 Difference]: Finished difference Result 591 states and 868 transitions. [2024-11-19 01:15:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:26,861 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2024-11-19 01:15:26,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:26,863 INFO L225 Difference]: With dead ends: 591 [2024-11-19 01:15:26,863 INFO L226 Difference]: Without dead ends: 385 [2024-11-19 01:15:26,864 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:15:26,866 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 413 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 1103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:26,866 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 743 Invalid, 1103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-19 01:15:26,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-19 01:15:26,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 338. [2024-11-19 01:15:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 310 states have (on average 1.4387096774193548) internal successors, (446), 310 states have internal predecessors, (446), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:26,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 494 transitions. [2024-11-19 01:15:26,897 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 494 transitions. Word has length 108 [2024-11-19 01:15:26,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:26,898 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 494 transitions. [2024-11-19 01:15:26,898 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:26,898 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 494 transitions. [2024-11-19 01:15:26,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:15:26,899 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:26,900 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:26,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:15:26,900 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:26,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:26,901 INFO L85 PathProgramCache]: Analyzing trace with hash -1680078857, now seen corresponding path program 1 times [2024-11-19 01:15:26,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:26,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202389240] [2024-11-19 01:15:26,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:26,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:26,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:27,703 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:27,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:27,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202389240] [2024-11-19 01:15:27,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202389240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:27,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:27,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:15:27,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871459251] [2024-11-19 01:15:27,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:27,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:15:27,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:27,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:15:27,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:15:27,706 INFO L87 Difference]: Start difference. First operand 338 states and 494 transitions. Second operand has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:28,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:28,281 INFO L93 Difference]: Finished difference Result 576 states and 847 transitions. [2024-11-19 01:15:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:15:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2024-11-19 01:15:28,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:28,284 INFO L225 Difference]: With dead ends: 576 [2024-11-19 01:15:28,284 INFO L226 Difference]: Without dead ends: 338 [2024-11-19 01:15:28,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:15:28,285 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 120 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:28,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 447 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:15:28,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2024-11-19 01:15:28,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2024-11-19 01:15:28,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 310 states have (on average 1.4322580645161291) internal successors, (444), 310 states have internal predecessors, (444), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 492 transitions. [2024-11-19 01:15:28,330 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 492 transitions. Word has length 108 [2024-11-19 01:15:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:28,331 INFO L471 AbstractCegarLoop]: Abstraction has 338 states and 492 transitions. [2024-11-19 01:15:28,331 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 8.5) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:28,331 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 492 transitions. [2024-11-19 01:15:28,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-19 01:15:28,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:28,333 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:28,333 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:15:28,333 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:28,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:28,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1257377031, now seen corresponding path program 1 times [2024-11-19 01:15:28,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:28,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420650133] [2024-11-19 01:15:28,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:28,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:30,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420650133] [2024-11-19 01:15:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420650133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:30,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:30,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-19 01:15:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578402797] [2024-11-19 01:15:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:30,999 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-19 01:15:30,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-19 01:15:31,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-11-19 01:15:31,000 INFO L87 Difference]: Start difference. First operand 338 states and 492 transitions. Second operand has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:32,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:32,156 INFO L93 Difference]: Finished difference Result 617 states and 903 transitions. [2024-11-19 01:15:32,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 01:15:32,157 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) Word has length 108 [2024-11-19 01:15:32,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:32,160 INFO L225 Difference]: With dead ends: 617 [2024-11-19 01:15:32,161 INFO L226 Difference]: Without dead ends: 409 [2024-11-19 01:15:32,161 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2024-11-19 01:15:32,162 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 191 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:32,163 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 804 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:15:32,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-11-19 01:15:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 360. [2024-11-19 01:15:32,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 332 states have (on average 1.4337349397590362) internal successors, (476), 332 states have internal predecessors, (476), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:32,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 524 transitions. [2024-11-19 01:15:32,197 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 524 transitions. Word has length 108 [2024-11-19 01:15:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:32,198 INFO L471 AbstractCegarLoop]: Abstraction has 360 states and 524 transitions. [2024-11-19 01:15:32,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 4.25) internal successors, (51), 14 states have internal predecessors, (51), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-19 01:15:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 524 transitions. [2024-11-19 01:15:32,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-19 01:15:32,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:32,199 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:32,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:15:32,199 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:32,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:32,200 INFO L85 PathProgramCache]: Analyzing trace with hash -999649969, now seen corresponding path program 1 times [2024-11-19 01:15:32,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:32,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213408850] [2024-11-19 01:15:32,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:32,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:34,523 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:34,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:34,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213408850] [2024-11-19 01:15:34,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213408850] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:34,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:34,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-19 01:15:34,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486113378] [2024-11-19 01:15:34,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:34,524 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 01:15:34,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:34,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 01:15:34,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:15:34,525 INFO L87 Difference]: Start difference. First operand 360 states and 524 transitions. Second operand has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:35,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:35,821 INFO L93 Difference]: Finished difference Result 688 states and 1005 transitions. [2024-11-19 01:15:35,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:15:35,822 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 109 [2024-11-19 01:15:35,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:35,826 INFO L225 Difference]: With dead ends: 688 [2024-11-19 01:15:35,826 INFO L226 Difference]: Without dead ends: 467 [2024-11-19 01:15:35,827 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:15:35,828 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 421 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:35,828 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 762 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 978 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 01:15:35,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2024-11-19 01:15:35,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 412. [2024-11-19 01:15:35,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 384 states have (on average 1.4375) internal successors, (552), 384 states have internal predecessors, (552), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 600 transitions. [2024-11-19 01:15:35,867 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 600 transitions. Word has length 109 [2024-11-19 01:15:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:35,868 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 600 transitions. [2024-11-19 01:15:35,868 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 15 states have internal predecessors, (52), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:35,869 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 600 transitions. [2024-11-19 01:15:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 01:15:35,870 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:35,870 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:35,870 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:15:35,870 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:35,871 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash 1506571061, now seen corresponding path program 1 times [2024-11-19 01:15:35,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852095708] [2024-11-19 01:15:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:37,710 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:37,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:37,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852095708] [2024-11-19 01:15:37,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852095708] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:37,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:37,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 01:15:37,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006784493] [2024-11-19 01:15:37,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:37,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:15:37,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:15:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:15:37,712 INFO L87 Difference]: Start difference. First operand 412 states and 600 transitions. Second operand has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:39,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:39,235 INFO L93 Difference]: Finished difference Result 775 states and 1130 transitions. [2024-11-19 01:15:39,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-19 01:15:39,235 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2024-11-19 01:15:39,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:39,237 INFO L225 Difference]: With dead ends: 775 [2024-11-19 01:15:39,238 INFO L226 Difference]: Without dead ends: 527 [2024-11-19 01:15:39,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=732, Unknown=0, NotChecked=0, Total=870 [2024-11-19 01:15:39,241 INFO L432 NwaCegarLoop]: 115 mSDtfsCounter, 278 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1101 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:39,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1101 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 01:15:39,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-19 01:15:39,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 472. [2024-11-19 01:15:39,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 472 states, 444 states have (on average 1.4414414414414414) internal successors, (640), 444 states have internal predecessors, (640), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:39,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 688 transitions. [2024-11-19 01:15:39,273 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 688 transitions. Word has length 110 [2024-11-19 01:15:39,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:39,274 INFO L471 AbstractCegarLoop]: Abstraction has 472 states and 688 transitions. [2024-11-19 01:15:39,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 3 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-19 01:15:39,274 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 688 transitions. [2024-11-19 01:15:39,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 01:15:39,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:39,275 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:39,276 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:15:39,276 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:39,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash 805506483, now seen corresponding path program 1 times [2024-11-19 01:15:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:39,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405698402] [2024-11-19 01:15:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:39,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:42,619 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:42,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:42,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405698402] [2024-11-19 01:15:42,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405698402] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:42,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:42,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 01:15:42,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523791530] [2024-11-19 01:15:42,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:42,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 01:15:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:42,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 01:15:42,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:15:42,621 INFO L87 Difference]: Start difference. First operand 472 states and 688 transitions. Second operand has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 01:15:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:43,844 INFO L93 Difference]: Finished difference Result 815 states and 1188 transitions. [2024-11-19 01:15:43,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 01:15:43,846 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) Word has length 110 [2024-11-19 01:15:43,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:43,848 INFO L225 Difference]: With dead ends: 815 [2024-11-19 01:15:43,848 INFO L226 Difference]: Without dead ends: 533 [2024-11-19 01:15:43,849 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:15:43,850 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 355 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 814 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:43,850 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 592 Invalid, 814 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:15:43,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2024-11-19 01:15:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 481. [2024-11-19 01:15:43,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 453 states have (on average 1.434878587196468) internal successors, (650), 453 states have internal predecessors, (650), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:43,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 698 transitions. [2024-11-19 01:15:43,885 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 698 transitions. Word has length 110 [2024-11-19 01:15:43,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:43,885 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 698 transitions. [2024-11-19 01:15:43,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 4.076923076923077) internal successors, (53), 16 states have internal predecessors, (53), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 3 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 01:15:43,885 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 698 transitions. [2024-11-19 01:15:43,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:43,886 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:43,887 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:43,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:15:43,887 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:43,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:43,888 INFO L85 PathProgramCache]: Analyzing trace with hash 74174475, now seen corresponding path program 1 times [2024-11-19 01:15:43,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:43,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829967347] [2024-11-19 01:15:43,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:43,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:44,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:48,866 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:48,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:48,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829967347] [2024-11-19 01:15:48,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829967347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:48,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:48,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-19 01:15:48,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220004844] [2024-11-19 01:15:48,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:48,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 01:15:48,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:48,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 01:15:48,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-19 01:15:48,870 INFO L87 Difference]: Start difference. First operand 481 states and 698 transitions. Second operand has 18 states, 14 states have (on average 3.857142857142857) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 01:15:51,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:51,128 INFO L93 Difference]: Finished difference Result 825 states and 1206 transitions. [2024-11-19 01:15:51,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 01:15:51,129 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 14 states have (on average 3.857142857142857) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 6 states have call successors, (12) Word has length 111 [2024-11-19 01:15:51,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:51,132 INFO L225 Difference]: With dead ends: 825 [2024-11-19 01:15:51,132 INFO L226 Difference]: Without dead ends: 536 [2024-11-19 01:15:51,132 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-11-19 01:15:51,133 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 431 mSDsluCounter, 795 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 1300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:51,133 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 897 Invalid, 1300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-19 01:15:51,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2024-11-19 01:15:51,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 485. [2024-11-19 01:15:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 457 states have (on average 1.4354485776805253) internal successors, (656), 457 states have internal predecessors, (656), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:51,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 704 transitions. [2024-11-19 01:15:51,167 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 704 transitions. Word has length 111 [2024-11-19 01:15:51,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:51,167 INFO L471 AbstractCegarLoop]: Abstraction has 485 states and 704 transitions. [2024-11-19 01:15:51,167 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 14 states have (on average 3.857142857142857) internal successors, (54), 18 states have internal predecessors, (54), 6 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 6 states have call successors, (12) [2024-11-19 01:15:51,168 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 704 transitions. [2024-11-19 01:15:51,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:51,169 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:51,169 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:51,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:15:51,169 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:51,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:51,170 INFO L85 PathProgramCache]: Analyzing trace with hash -626890103, now seen corresponding path program 1 times [2024-11-19 01:15:51,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:51,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378617790] [2024-11-19 01:15:51,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:51,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:15:55,773 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-19 01:15:55,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:15:55,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378617790] [2024-11-19 01:15:55,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378617790] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:15:55,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:15:55,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-19 01:15:55,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708239996] [2024-11-19 01:15:55,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:15:55,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 01:15:55,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:15:55,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 01:15:55,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:15:55,776 INFO L87 Difference]: Start difference. First operand 485 states and 704 transitions. Second operand has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:15:58,729 INFO L93 Difference]: Finished difference Result 829 states and 1210 transitions. [2024-11-19 01:15:58,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 01:15:58,730 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) Word has length 111 [2024-11-19 01:15:58,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:15:58,732 INFO L225 Difference]: With dead ends: 829 [2024-11-19 01:15:58,732 INFO L226 Difference]: Without dead ends: 534 [2024-11-19 01:15:58,733 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:15:58,734 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 362 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 1270 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 884 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:15:58,734 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [365 Valid, 884 Invalid, 1291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1270 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-19 01:15:58,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-19 01:15:58,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 481. [2024-11-19 01:15:58,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 453 states have (on average 1.434878587196468) internal successors, (650), 453 states have internal predecessors, (650), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2024-11-19 01:15:58,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 698 transitions. [2024-11-19 01:15:58,772 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 698 transitions. Word has length 111 [2024-11-19 01:15:58,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:15:58,773 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 698 transitions. [2024-11-19 01:15:58,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 3.857142857142857) internal successors, (54), 17 states have internal predecessors, (54), 5 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 2 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-19 01:15:58,773 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 698 transitions. [2024-11-19 01:15:58,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-11-19 01:15:58,774 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:15:58,775 INFO L215 NwaCegarLoop]: trace histogram [12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:15:58,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:15:58,775 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:15:58,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:15:58,776 INFO L85 PathProgramCache]: Analyzing trace with hash -512631539, now seen corresponding path program 1 times [2024-11-19 01:15:58,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:15:58,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462632234] [2024-11-19 01:15:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:15:58,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:15:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat