./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-3.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 4d296a3302a6844401d5af73ebf4532ddc45e3bc6fc59b524170709cbc547ff4 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 08:25:23,564 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 08:25:23,671 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-22 08:25:23,678 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 08:25:23,679 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 08:25:23,710 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 08:25:23,710 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 08:25:23,710 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 08:25:23,711 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 08:25:23,715 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 08:25:23,716 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 08:25:23,716 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 08:25:23,716 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 08:25:23,717 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 08:25:23,717 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 08:25:23,717 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 08:25:23,717 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 08:25:23,718 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 08:25:23,718 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 08:25:23,718 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 08:25:23,722 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 08:25:23,726 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 08:25:23,727 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 08:25:23,728 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 08:25:23,728 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 08:25:23,728 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 08:25:23,728 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 08:25:23,728 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:25:23,728 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 08:25:23,729 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 08:25:23,730 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 08:25:23,731 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 08:25:23,731 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d296a3302a6844401d5af73ebf4532ddc45e3bc6fc59b524170709cbc547ff4 [2024-11-22 08:25:23,929 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 08:25:23,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 08:25:23,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 08:25:23,960 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 08:25:23,960 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 08:25:23,962 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-3.i [2024-11-22 08:25:25,795 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 08:25:25,988 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 08:25:25,989 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-co_file-3.i [2024-11-22 08:25:25,996 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f22b87a8/c98336a151cf400181a80eac20ba89e7/FLAGc355867fc [2024-11-22 08:25:26,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f22b87a8/c98336a151cf400181a80eac20ba89e7 [2024-11-22 08:25:26,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 08:25:26,015 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 08:25:26,016 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 08:25:26,016 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 08:25:26,022 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 08:25:26,024 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a35011e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26, skipping insertion in model container [2024-11-22 08:25:26,025 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,054 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 08:25:26,196 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_fillercode_fillercodestructure_filler-pe-co_file-3.i[918,931] [2024-11-22 08:25:26,288 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:25:26,305 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 08:25:26,317 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_fillercode_fillercodestructure_filler-pe-co_file-3.i[918,931] [2024-11-22 08:25:26,357 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 08:25:26,377 INFO L204 MainTranslator]: Completed translation [2024-11-22 08:25:26,378 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26 WrapperNode [2024-11-22 08:25:26,378 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 08:25:26,379 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 08:25:26,379 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 08:25:26,380 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 08:25:26,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,400 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,437 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 274 [2024-11-22 08:25:26,438 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 08:25:26,438 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 08:25:26,438 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 08:25:26,438 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 08:25:26,452 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,454 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,461 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,477 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-22 08:25:26,477 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,478 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,487 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,490 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,493 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,495 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,499 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 08:25:26,499 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 08:25:26,499 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 08:25:26,500 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 08:25:26,500 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (1/1) ... [2024-11-22 08:25:26,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 08:25:26,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:25:26,560 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-22 08:25:26,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-22 08:25:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 08:25:26,646 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-22 08:25:26,646 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-22 08:25:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 08:25:26,647 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 08:25:26,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 08:25:26,769 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 08:25:26,772 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 08:25:27,277 INFO L? ?]: Removed 18 outVars from TransFormulas that were not future-live. [2024-11-22 08:25:27,279 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 08:25:27,298 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 08:25:27,298 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 08:25:27,300 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:25:27 BoogieIcfgContainer [2024-11-22 08:25:27,300 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 08:25:27,303 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 08:25:27,303 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 08:25:27,307 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 08:25:27,308 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 08:25:26" (1/3) ... [2024-11-22 08:25:27,310 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8aaa204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:25:27, skipping insertion in model container [2024-11-22 08:25:27,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 08:25:26" (2/3) ... [2024-11-22 08:25:27,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8aaa204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 08:25:27, skipping insertion in model container [2024-11-22 08:25:27,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 08:25:27" (3/3) ... [2024-11-22 08:25:27,314 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-co_file-3.i [2024-11-22 08:25:27,334 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 08:25:27,335 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-22 08:25:27,407 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 08:25:27,413 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;@6c881636, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 08:25:27,414 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-22 08:25:27,419 INFO L276 IsEmpty]: Start isEmpty. Operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 08:25:27,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 08:25:27,436 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:27,437 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:27,437 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:27,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:27,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1227843749, now seen corresponding path program 1 times [2024-11-22 08:25:27,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:27,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501890292] [2024-11-22 08:25:27,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:27,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:27,988 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 08:25:27,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:27,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501890292] [2024-11-22 08:25:27,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501890292] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:25:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767264659] [2024-11-22 08:25:27,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:27,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:25:27,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:25:27,996 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 08:25:27,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 08:25:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:28,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-22 08:25:28,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:25:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 66 proven. 0 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2024-11-22 08:25:28,250 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 08:25:28,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767264659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:28,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 08:25:28,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-22 08:25:28,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400514623] [2024-11-22 08:25:28,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:28,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 08:25:28,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:28,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 08:25:28,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:25:28,339 INFO L87 Difference]: Start difference. First operand has 123 states, 86 states have (on average 1.5116279069767442) internal successors, (130), 87 states have internal predecessors, (130), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) Second operand has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 08:25:28,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:28,440 INFO L93 Difference]: Finished difference Result 239 states and 424 transitions. [2024-11-22 08:25:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 08:25:28,465 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) Word has length 221 [2024-11-22 08:25:28,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:28,486 INFO L225 Difference]: With dead ends: 239 [2024-11-22 08:25:28,490 INFO L226 Difference]: Without dead ends: 119 [2024-11-22 08:25:28,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 08:25:28,502 INFO L432 NwaCegarLoop]: 190 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, 190 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:28,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:25:28,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-22 08:25:28,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2024-11-22 08:25:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 83 states have (on average 1.4698795180722892) internal successors, (122), 83 states have internal predecessors, (122), 34 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-22 08:25:28,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 190 transitions. [2024-11-22 08:25:28,574 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 190 transitions. Word has length 221 [2024-11-22 08:25:28,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:28,576 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 190 transitions. [2024-11-22 08:25:28,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 28.0) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (34), 2 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-22 08:25:28,577 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 190 transitions. [2024-11-22 08:25:28,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-22 08:25:28,582 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:28,583 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:28,593 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 08:25:28,787 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-22 08:25:28,788 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:28,789 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash -356395357, now seen corresponding path program 1 times [2024-11-22 08:25:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:28,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162108473] [2024-11-22 08:25:28,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:28,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:28,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:29,197 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:29,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:29,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162108473] [2024-11-22 08:25:29,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162108473] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:29,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:29,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:25:29,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897311793] [2024-11-22 08:25:29,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:29,200 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:25:29,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:29,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:25:29,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:25:29,203 INFO L87 Difference]: Start difference. First operand 119 states and 190 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:29,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:29,405 INFO L93 Difference]: Finished difference Result 352 states and 566 transitions. [2024-11-22 08:25:29,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:25:29,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 221 [2024-11-22 08:25:29,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:29,411 INFO L225 Difference]: With dead ends: 352 [2024-11-22 08:25:29,413 INFO L226 Difference]: Without dead ends: 236 [2024-11-22 08:25:29,414 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:25:29,415 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 116 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:29,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 475 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:25:29,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-11-22 08:25:29,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 233. [2024-11-22 08:25:29,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 162 states have (on average 1.4753086419753085) internal successors, (239), 162 states have internal predecessors, (239), 68 states have call successors, (68), 2 states have call predecessors, (68), 2 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-22 08:25:29,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 375 transitions. [2024-11-22 08:25:29,466 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 375 transitions. Word has length 221 [2024-11-22 08:25:29,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:29,467 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 375 transitions. [2024-11-22 08:25:29,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:29,468 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 375 transitions. [2024-11-22 08:25:29,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-22 08:25:29,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:29,476 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:29,476 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 08:25:29,476 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:29,476 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1543107681, now seen corresponding path program 1 times [2024-11-22 08:25:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:29,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116752901] [2024-11-22 08:25:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:29,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:29,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:29,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116752901] [2024-11-22 08:25:29,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116752901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:29,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:29,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:25:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256074845] [2024-11-22 08:25:29,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:29,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:25:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:25:29,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:29,651 INFO L87 Difference]: Start difference. First operand 233 states and 375 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:29,806 INFO L93 Difference]: Finished difference Result 679 states and 1098 transitions. [2024-11-22 08:25:29,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:25:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-11-22 08:25:29,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:29,817 INFO L225 Difference]: With dead ends: 679 [2024-11-22 08:25:29,817 INFO L226 Difference]: Without dead ends: 449 [2024-11-22 08:25:29,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:29,818 INFO L432 NwaCegarLoop]: 189 mSDtfsCounter, 179 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:29,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 343 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:25:29,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2024-11-22 08:25:29,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 447. [2024-11-22 08:25:29,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 306 states have (on average 1.4607843137254901) internal successors, (447), 306 states have internal predecessors, (447), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-22 08:25:29,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 719 transitions. [2024-11-22 08:25:29,967 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 719 transitions. Word has length 222 [2024-11-22 08:25:29,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:29,971 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 719 transitions. [2024-11-22 08:25:29,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:29,972 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 719 transitions. [2024-11-22 08:25:29,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-22 08:25:29,978 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:29,979 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:29,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 08:25:29,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:29,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:29,983 INFO L85 PathProgramCache]: Analyzing trace with hash -559011463, now seen corresponding path program 1 times [2024-11-22 08:25:29,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:29,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627685611] [2024-11-22 08:25:29,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:29,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:30,321 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:30,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:30,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627685611] [2024-11-22 08:25:30,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627685611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:30,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:30,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:25:30,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891740810] [2024-11-22 08:25:30,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:30,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:25:30,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:30,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:25:30,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:25:30,324 INFO L87 Difference]: Start difference. First operand 447 states and 719 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:30,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:30,859 INFO L93 Difference]: Finished difference Result 895 states and 1440 transitions. [2024-11-22 08:25:30,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:25:30,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 222 [2024-11-22 08:25:30,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:30,886 INFO L225 Difference]: With dead ends: 895 [2024-11-22 08:25:30,886 INFO L226 Difference]: Without dead ends: 451 [2024-11-22 08:25:30,889 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:25:30,890 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 114 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:30,891 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 476 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:25:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2024-11-22 08:25:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 447. [2024-11-22 08:25:30,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 306 states have (on average 1.457516339869281) internal successors, (446), 306 states have internal predecessors, (446), 136 states have call successors, (136), 4 states have call predecessors, (136), 4 states have return successors, (136), 136 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-22 08:25:30,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 718 transitions. [2024-11-22 08:25:30,955 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 718 transitions. Word has length 222 [2024-11-22 08:25:30,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:30,961 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 718 transitions. [2024-11-22 08:25:30,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:30,961 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 718 transitions. [2024-11-22 08:25:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-22 08:25:30,968 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:30,968 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:30,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 08:25:30,969 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:30,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:30,969 INFO L85 PathProgramCache]: Analyzing trace with hash 765727625, now seen corresponding path program 1 times [2024-11-22 08:25:30,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:30,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587278144] [2024-11-22 08:25:30,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:30,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:31,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:31,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587278144] [2024-11-22 08:25:31,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587278144] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:31,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:31,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:25:31,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075764822] [2024-11-22 08:25:31,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:31,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:25:31,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:31,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:25:31,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:31,276 INFO L87 Difference]: Start difference. First operand 447 states and 718 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:31,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:31,461 INFO L93 Difference]: Finished difference Result 1335 states and 2148 transitions. [2024-11-22 08:25:31,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:25:31,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 223 [2024-11-22 08:25:31,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:31,475 INFO L225 Difference]: With dead ends: 1335 [2024-11-22 08:25:31,476 INFO L226 Difference]: Without dead ends: 891 [2024-11-22 08:25:31,477 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:31,478 INFO L432 NwaCegarLoop]: 236 mSDtfsCounter, 120 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:31,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 404 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:25:31,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 891 states. [2024-11-22 08:25:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 889. [2024-11-22 08:25:31,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 889 states, 608 states have (on average 1.4407894736842106) internal successors, (876), 608 states have internal predecessors, (876), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-22 08:25:31,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 889 states to 889 states and 1420 transitions. [2024-11-22 08:25:31,530 INFO L78 Accepts]: Start accepts. Automaton has 889 states and 1420 transitions. Word has length 223 [2024-11-22 08:25:31,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:31,530 INFO L471 AbstractCegarLoop]: Abstraction has 889 states and 1420 transitions. [2024-11-22 08:25:31,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:31,531 INFO L276 IsEmpty]: Start isEmpty. Operand 889 states and 1420 transitions. [2024-11-22 08:25:31,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-22 08:25:31,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:31,533 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:31,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 08:25:31,533 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:31,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:31,534 INFO L85 PathProgramCache]: Analyzing trace with hash -408798629, now seen corresponding path program 1 times [2024-11-22 08:25:31,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:31,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093298215] [2024-11-22 08:25:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:31,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:31,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:31,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:31,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093298215] [2024-11-22 08:25:31,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093298215] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:31,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:31,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:25:31,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138362443] [2024-11-22 08:25:31,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:31,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:25:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:31,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:25:31,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:31,618 INFO L87 Difference]: Start difference. First operand 889 states and 1420 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:31,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:31,704 INFO L93 Difference]: Finished difference Result 2185 states and 3486 transitions. [2024-11-22 08:25:31,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:25:31,705 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-22 08:25:31,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:31,713 INFO L225 Difference]: With dead ends: 2185 [2024-11-22 08:25:31,714 INFO L226 Difference]: Without dead ends: 1299 [2024-11-22 08:25:31,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:31,718 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 83 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:31,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 435 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:25:31,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1299 states. [2024-11-22 08:25:31,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1299 to 961. [2024-11-22 08:25:31,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 680 states have (on average 1.4411764705882353) internal successors, (980), 680 states have internal predecessors, (980), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-22 08:25:31,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1524 transitions. [2024-11-22 08:25:31,880 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1524 transitions. Word has length 224 [2024-11-22 08:25:31,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:31,881 INFO L471 AbstractCegarLoop]: Abstraction has 961 states and 1524 transitions. [2024-11-22 08:25:31,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:31,882 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1524 transitions. [2024-11-22 08:25:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-22 08:25:31,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:31,885 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:31,886 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 08:25:31,886 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:31,887 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:31,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1415060853, now seen corresponding path program 1 times [2024-11-22 08:25:31,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:31,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730310238] [2024-11-22 08:25:31,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:31,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:31,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:32,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:32,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:32,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730310238] [2024-11-22 08:25:32,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730310238] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:32,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:32,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:25:32,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428929999] [2024-11-22 08:25:32,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:32,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:25:32,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:32,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:25:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:32,020 INFO L87 Difference]: Start difference. First operand 961 states and 1524 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:32,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:32,124 INFO L93 Difference]: Finished difference Result 2021 states and 3214 transitions. [2024-11-22 08:25:32,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:25:32,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-22 08:25:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:32,131 INFO L225 Difference]: With dead ends: 2021 [2024-11-22 08:25:32,131 INFO L226 Difference]: Without dead ends: 1063 [2024-11-22 08:25:32,134 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:25:32,135 INFO L432 NwaCegarLoop]: 306 mSDtfsCounter, 167 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:32,135 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 462 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 08:25:32,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2024-11-22 08:25:32,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 1061. [2024-11-22 08:25:32,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1061 states, 780 states have (on average 1.4512820512820512) internal successors, (1132), 780 states have internal predecessors, (1132), 272 states have call successors, (272), 8 states have call predecessors, (272), 8 states have return successors, (272), 272 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-22 08:25:32,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1061 states to 1061 states and 1676 transitions. [2024-11-22 08:25:32,197 INFO L78 Accepts]: Start accepts. Automaton has 1061 states and 1676 transitions. Word has length 224 [2024-11-22 08:25:32,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:32,198 INFO L471 AbstractCegarLoop]: Abstraction has 1061 states and 1676 transitions. [2024-11-22 08:25:32,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:32,198 INFO L276 IsEmpty]: Start isEmpty. Operand 1061 states and 1676 transitions. [2024-11-22 08:25:32,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-22 08:25:32,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:32,200 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:32,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 08:25:32,201 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:32,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:32,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1524180413, now seen corresponding path program 1 times [2024-11-22 08:25:32,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:32,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704975981] [2024-11-22 08:25:32,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:32,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:32,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:32,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:32,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:32,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704975981] [2024-11-22 08:25:32,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704975981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:32,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:32,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:25:32,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129348191] [2024-11-22 08:25:32,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:32,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:25:32,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:32,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:25:32,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:25:32,376 INFO L87 Difference]: Start difference. First operand 1061 states and 1676 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:32,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:32,699 INFO L93 Difference]: Finished difference Result 3670 states and 5809 transitions. [2024-11-22 08:25:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:25:32,700 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-22 08:25:32,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:32,712 INFO L225 Difference]: With dead ends: 3670 [2024-11-22 08:25:32,713 INFO L226 Difference]: Without dead ends: 2612 [2024-11-22 08:25:32,717 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:25:32,718 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 358 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 509 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:32,718 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 509 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:25:32,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2612 states. [2024-11-22 08:25:32,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2612 to 2608. [2024-11-22 08:25:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2608 states, 1907 states have (on average 1.4357629785002621) internal successors, (2738), 1907 states have internal predecessors, (2738), 680 states have call successors, (680), 20 states have call predecessors, (680), 20 states have return successors, (680), 680 states have call predecessors, (680), 680 states have call successors, (680) [2024-11-22 08:25:32,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2608 states to 2608 states and 4098 transitions. [2024-11-22 08:25:32,985 INFO L78 Accepts]: Start accepts. Automaton has 2608 states and 4098 transitions. Word has length 224 [2024-11-22 08:25:32,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:32,986 INFO L471 AbstractCegarLoop]: Abstraction has 2608 states and 4098 transitions. [2024-11-22 08:25:32,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:32,986 INFO L276 IsEmpty]: Start isEmpty. Operand 2608 states and 4098 transitions. [2024-11-22 08:25:32,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-22 08:25:32,989 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:32,989 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:32,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 08:25:32,989 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:32,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash 776642177, now seen corresponding path program 1 times [2024-11-22 08:25:32,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:32,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063601560] [2024-11-22 08:25:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:32,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:33,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063601560] [2024-11-22 08:25:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063601560] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:33,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:25:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872610083] [2024-11-22 08:25:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:33,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:25:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:33,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:25:33,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:25:33,548 INFO L87 Difference]: Start difference. First operand 2608 states and 4098 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:34,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:34,525 INFO L93 Difference]: Finished difference Result 8952 states and 14003 transitions. [2024-11-22 08:25:34,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 08:25:34,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 224 [2024-11-22 08:25:34,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:34,561 INFO L225 Difference]: With dead ends: 8952 [2024-11-22 08:25:34,562 INFO L226 Difference]: Without dead ends: 6347 [2024-11-22 08:25:34,572 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-22 08:25:34,573 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 437 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:34,573 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 588 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:25:34,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6347 states. [2024-11-22 08:25:35,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6347 to 6289. [2024-11-22 08:25:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 4448 states have (on average 1.4060251798561152) internal successors, (6254), 4468 states have internal predecessors, (6254), 1780 states have call successors, (1780), 60 states have call predecessors, (1780), 60 states have return successors, (1780), 1760 states have call predecessors, (1780), 1780 states have call successors, (1780) [2024-11-22 08:25:35,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 9814 transitions. [2024-11-22 08:25:35,095 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 9814 transitions. Word has length 224 [2024-11-22 08:25:35,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:35,097 INFO L471 AbstractCegarLoop]: Abstraction has 6289 states and 9814 transitions. [2024-11-22 08:25:35,097 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:35,097 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 9814 transitions. [2024-11-22 08:25:35,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-22 08:25:35,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:35,101 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:35,101 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 08:25:35,101 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:35,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:35,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1034807615, now seen corresponding path program 1 times [2024-11-22 08:25:35,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:35,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665387956] [2024-11-22 08:25:35,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:35,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:35,523 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-22 08:25:35,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665387956] [2024-11-22 08:25:35,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665387956] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:25:35,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832154310] [2024-11-22 08:25:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:35,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:25:35,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:25:35,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 08:25:35,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 08:25:35,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:35,670 INFO L255 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 08:25:35,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:25:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1083 proven. 36 refuted. 0 times theorem prover too weak. 1125 trivial. 0 not checked. [2024-11-22 08:25:36,427 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:25:36,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 63 proven. 36 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-22 08:25:36,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832154310] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:25:36,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:25:36,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 6] total 14 [2024-11-22 08:25:36,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578553152] [2024-11-22 08:25:36,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:25:36,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 08:25:36,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 08:25:36,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2024-11-22 08:25:36,869 INFO L87 Difference]: Start difference. First operand 6289 states and 9814 transitions. Second operand has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (102), 3 states have call predecessors, (102), 6 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) [2024-11-22 08:25:39,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:39,659 INFO L93 Difference]: Finished difference Result 22958 states and 35826 transitions. [2024-11-22 08:25:39,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 08:25:39,660 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (102), 3 states have call predecessors, (102), 6 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) Word has length 224 [2024-11-22 08:25:39,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:39,812 INFO L225 Difference]: With dead ends: 22958 [2024-11-22 08:25:39,813 INFO L226 Difference]: Without dead ends: 16672 [2024-11-22 08:25:39,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 443 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=185, Invalid=415, Unknown=0, NotChecked=0, Total=600 [2024-11-22 08:25:39,843 INFO L432 NwaCegarLoop]: 366 mSDtfsCounter, 1102 mSDsluCounter, 1837 mSDsCounter, 0 mSdLazyCounter, 1716 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 2203 SdHoareTripleChecker+Invalid, 2018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 1716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:39,844 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 2203 Invalid, 2018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 1716 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-22 08:25:39,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16672 states. [2024-11-22 08:25:40,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16672 to 9094. [2024-11-22 08:25:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9094 states, 6513 states have (on average 1.4024259173959772) internal successors, (9134), 6533 states have internal predecessors, (9134), 2460 states have call successors, (2460), 120 states have call predecessors, (2460), 120 states have return successors, (2460), 2440 states have call predecessors, (2460), 2460 states have call successors, (2460) [2024-11-22 08:25:40,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9094 states to 9094 states and 14054 transitions. [2024-11-22 08:25:40,881 INFO L78 Accepts]: Start accepts. Automaton has 9094 states and 14054 transitions. Word has length 224 [2024-11-22 08:25:40,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:40,881 INFO L471 AbstractCegarLoop]: Abstraction has 9094 states and 14054 transitions. [2024-11-22 08:25:40,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 11.428571428571429) internal successors, (160), 14 states have internal predecessors, (160), 6 states have call successors, (102), 3 states have call predecessors, (102), 6 states have return successors, (102), 6 states have call predecessors, (102), 6 states have call successors, (102) [2024-11-22 08:25:40,882 INFO L276 IsEmpty]: Start isEmpty. Operand 9094 states and 14054 transitions. [2024-11-22 08:25:40,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2024-11-22 08:25:40,889 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:40,890 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:40,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 08:25:41,090 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,SelfDestructingSolverStorable9 [2024-11-22 08:25:41,091 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:41,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:41,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1972127795, now seen corresponding path program 1 times [2024-11-22 08:25:41,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:41,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723734652] [2024-11-22 08:25:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:41,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:42,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 42 proven. 57 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2024-11-22 08:25:42,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:42,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723734652] [2024-11-22 08:25:42,940 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723734652] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 08:25:42,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797893650] [2024-11-22 08:25:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:42,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:25:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 08:25:42,944 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) [2024-11-22 08:25:42,945 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 08:25:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:43,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-22 08:25:43,106 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 08:25:45,271 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 1222 proven. 249 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2024-11-22 08:25:45,271 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 08:25:46,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 111 proven. 267 refuted. 0 times theorem prover too weak. 1866 trivial. 0 not checked. [2024-11-22 08:25:46,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797893650] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 08:25:46,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 08:25:46,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 16, 15] total 34 [2024-11-22 08:25:46,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027156774] [2024-11-22 08:25:46,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 08:25:46,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 08:25:46,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:46,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 08:25:46,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=273, Invalid=849, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 08:25:46,774 INFO L87 Difference]: Start difference. First operand 9094 states and 14054 transitions. Second operand has 34 states, 33 states have (on average 4.454545454545454) internal successors, (147), 32 states have internal predecessors, (147), 11 states have call successors, (89), 6 states have call predecessors, (89), 13 states have return successors, (90), 10 states have call predecessors, (90), 11 states have call successors, (90) [2024-11-22 08:25:48,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:48,639 INFO L93 Difference]: Finished difference Result 17172 states and 25536 transitions. [2024-11-22 08:25:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 08:25:48,644 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 4.454545454545454) internal successors, (147), 32 states have internal predecessors, (147), 11 states have call successors, (89), 6 states have call predecessors, (89), 13 states have return successors, (90), 10 states have call predecessors, (90), 11 states have call successors, (90) Word has length 225 [2024-11-22 08:25:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:48,676 INFO L225 Difference]: With dead ends: 17172 [2024-11-22 08:25:48,677 INFO L226 Difference]: Without dead ends: 8081 [2024-11-22 08:25:48,700 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1037, Invalid=2623, Unknown=0, NotChecked=0, Total=3660 [2024-11-22 08:25:48,701 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 883 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:48,701 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [883 Valid, 502 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 08:25:48,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8081 states. [2024-11-22 08:25:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8081 to 7601. [2024-11-22 08:25:49,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7601 states, 5830 states have (on average 1.3680960548885077) internal successors, (7976), 5880 states have internal predecessors, (7976), 1470 states have call successors, (1470), 300 states have call predecessors, (1470), 300 states have return successors, (1470), 1420 states have call predecessors, (1470), 1470 states have call successors, (1470) [2024-11-22 08:25:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7601 states to 7601 states and 10916 transitions. [2024-11-22 08:25:49,374 INFO L78 Accepts]: Start accepts. Automaton has 7601 states and 10916 transitions. Word has length 225 [2024-11-22 08:25:49,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:49,375 INFO L471 AbstractCegarLoop]: Abstraction has 7601 states and 10916 transitions. [2024-11-22 08:25:49,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 4.454545454545454) internal successors, (147), 32 states have internal predecessors, (147), 11 states have call successors, (89), 6 states have call predecessors, (89), 13 states have return successors, (90), 10 states have call predecessors, (90), 11 states have call successors, (90) [2024-11-22 08:25:49,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7601 states and 10916 transitions. [2024-11-22 08:25:49,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-22 08:25:49,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:49,379 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:49,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 08:25:49,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 08:25:49,584 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:49,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:49,584 INFO L85 PathProgramCache]: Analyzing trace with hash -117541529, now seen corresponding path program 1 times [2024-11-22 08:25:49,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:49,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585851636] [2024-11-22 08:25:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:49,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:49,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:49,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:49,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585851636] [2024-11-22 08:25:49,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585851636] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:49,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:49,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:25:49,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773316738] [2024-11-22 08:25:49,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:49,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:25:49,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:49,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:25:49,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:25:49,840 INFO L87 Difference]: Start difference. First operand 7601 states and 10916 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:52,715 INFO L93 Difference]: Finished difference Result 26891 states and 38272 transitions. [2024-11-22 08:25:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:25:52,716 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-22 08:25:52,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:52,796 INFO L225 Difference]: With dead ends: 26891 [2024-11-22 08:25:52,796 INFO L226 Difference]: Without dead ends: 21479 [2024-11-22 08:25:52,815 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:25:52,816 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 470 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:52,816 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 688 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 08:25:52,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21479 states. [2024-11-22 08:25:54,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21479 to 18251. [2024-11-22 08:25:54,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 13580 states have (on average 1.3440353460972019) internal successors, (18252), 13730 states have internal predecessors, (18252), 3880 states have call successors, (3880), 790 states have call predecessors, (3880), 790 states have return successors, (3880), 3730 states have call predecessors, (3880), 3880 states have call successors, (3880) [2024-11-22 08:25:54,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 26012 transitions. [2024-11-22 08:25:54,857 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 26012 transitions. Word has length 226 [2024-11-22 08:25:54,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:54,858 INFO L471 AbstractCegarLoop]: Abstraction has 18251 states and 26012 transitions. [2024-11-22 08:25:54,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:54,858 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 26012 transitions. [2024-11-22 08:25:54,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2024-11-22 08:25:54,863 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:54,863 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:54,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 08:25:54,863 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:54,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:54,865 INFO L85 PathProgramCache]: Analyzing trace with hash 140623909, now seen corresponding path program 1 times [2024-11-22 08:25:54,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:54,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348870240] [2024-11-22 08:25:54,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:55,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:55,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348870240] [2024-11-22 08:25:55,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348870240] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:55,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:25:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018705396] [2024-11-22 08:25:55,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:55,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:25:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:25:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:25:55,028 INFO L87 Difference]: Start difference. First operand 18251 states and 26012 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:57,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:25:57,814 INFO L93 Difference]: Finished difference Result 27833 states and 39776 transitions. [2024-11-22 08:25:57,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:25:57,815 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 226 [2024-11-22 08:25:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:25:57,888 INFO L225 Difference]: With dead ends: 27833 [2024-11-22 08:25:57,888 INFO L226 Difference]: Without dead ends: 18263 [2024-11-22 08:25:57,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:25:57,912 INFO L432 NwaCegarLoop]: 327 mSDtfsCounter, 184 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 907 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 08:25:57,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 907 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 08:25:57,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18263 states. [2024-11-22 08:25:59,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18263 to 18251. [2024-11-22 08:25:59,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 13580 states have (on average 1.3432989690721648) internal successors, (18242), 13730 states have internal predecessors, (18242), 3880 states have call successors, (3880), 790 states have call predecessors, (3880), 790 states have return successors, (3880), 3730 states have call predecessors, (3880), 3880 states have call successors, (3880) [2024-11-22 08:25:59,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 26002 transitions. [2024-11-22 08:25:59,667 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 26002 transitions. Word has length 226 [2024-11-22 08:25:59,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:25:59,667 INFO L471 AbstractCegarLoop]: Abstraction has 18251 states and 26002 transitions. [2024-11-22 08:25:59,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:25:59,668 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 26002 transitions. [2024-11-22 08:25:59,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-22 08:25:59,673 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:25:59,673 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:25:59,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 08:25:59,674 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:25:59,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:25:59,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1572917596, now seen corresponding path program 1 times [2024-11-22 08:25:59,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:25:59,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167189885] [2024-11-22 08:25:59,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:25:59,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:25:59,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:25:59,841 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:25:59,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:25:59,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167189885] [2024-11-22 08:25:59,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167189885] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:25:59,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:25:59,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:25:59,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182603976] [2024-11-22 08:25:59,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:25:59,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:25:59,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:25:59,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:25:59,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:25:59,843 INFO L87 Difference]: Start difference. First operand 18251 states and 26002 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:02,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:26:02,116 INFO L93 Difference]: Finished difference Result 29145 states and 41630 transitions. [2024-11-22 08:26:02,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 08:26:02,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-22 08:26:02,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:26:02,206 INFO L225 Difference]: With dead ends: 29145 [2024-11-22 08:26:02,206 INFO L226 Difference]: Without dead ends: 18273 [2024-11-22 08:26:02,238 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:26:02,239 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 118 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:26:02,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 629 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:26:02,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18273 states. [2024-11-22 08:26:05,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18273 to 18251. [2024-11-22 08:26:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18251 states, 13580 states have (on average 1.3430044182621501) internal successors, (18238), 13730 states have internal predecessors, (18238), 3880 states have call successors, (3880), 790 states have call predecessors, (3880), 790 states have return successors, (3880), 3730 states have call predecessors, (3880), 3880 states have call successors, (3880) [2024-11-22 08:26:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18251 states to 18251 states and 25998 transitions. [2024-11-22 08:26:05,234 INFO L78 Accepts]: Start accepts. Automaton has 18251 states and 25998 transitions. Word has length 227 [2024-11-22 08:26:05,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:26:05,235 INFO L471 AbstractCegarLoop]: Abstraction has 18251 states and 25998 transitions. [2024-11-22 08:26:05,235 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:05,235 INFO L276 IsEmpty]: Start isEmpty. Operand 18251 states and 25998 transitions. [2024-11-22 08:26:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2024-11-22 08:26:05,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:26:05,241 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:26:05,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 08:26:05,241 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:26:05,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:26:05,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1344604785, now seen corresponding path program 1 times [2024-11-22 08:26:05,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:26:05,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782378263] [2024-11-22 08:26:05,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:26:05,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:26:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:26:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:26:05,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:26:05,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782378263] [2024-11-22 08:26:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782378263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:26:05,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:26:05,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 08:26:05,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706299682] [2024-11-22 08:26:05,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:26:05,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 08:26:05,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:26:05,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 08:26:05,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 08:26:05,394 INFO L87 Difference]: Start difference. First operand 18251 states and 25998 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:07,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:26:07,550 INFO L93 Difference]: Finished difference Result 43797 states and 62485 transitions. [2024-11-22 08:26:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 08:26:07,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 227 [2024-11-22 08:26:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:26:07,668 INFO L225 Difference]: With dead ends: 43797 [2024-11-22 08:26:07,668 INFO L226 Difference]: Without dead ends: 25549 [2024-11-22 08:26:07,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 08:26:07,710 INFO L432 NwaCegarLoop]: 222 mSDtfsCounter, 312 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 08:26:07,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 715 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 08:26:07,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25549 states. [2024-11-22 08:26:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25549 to 22367. [2024-11-22 08:26:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22367 states, 16504 states have (on average 1.3345855550169656) internal successors, (22026), 16662 states have internal predecessors, (22026), 4864 states have call successors, (4864), 998 states have call predecessors, (4864), 998 states have return successors, (4864), 4706 states have call predecessors, (4864), 4864 states have call successors, (4864) [2024-11-22 08:26:11,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22367 states to 22367 states and 31754 transitions. [2024-11-22 08:26:11,228 INFO L78 Accepts]: Start accepts. Automaton has 22367 states and 31754 transitions. Word has length 227 [2024-11-22 08:26:11,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:26:11,229 INFO L471 AbstractCegarLoop]: Abstraction has 22367 states and 31754 transitions. [2024-11-22 08:26:11,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:11,229 INFO L276 IsEmpty]: Start isEmpty. Operand 22367 states and 31754 transitions. [2024-11-22 08:26:11,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-22 08:26:11,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:26:11,233 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:26:11,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 08:26:11,234 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:26:11,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:26:11,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1379703102, now seen corresponding path program 1 times [2024-11-22 08:26:11,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:26:11,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505829004] [2024-11-22 08:26:11,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:26:11,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:26:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:26:11,355 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:26:11,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:26:11,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505829004] [2024-11-22 08:26:11,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505829004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:26:11,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:26:11,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 08:26:11,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108867323] [2024-11-22 08:26:11,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:26:11,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 08:26:11,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:26:11,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 08:26:11,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:26:11,358 INFO L87 Difference]: Start difference. First operand 22367 states and 31754 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:15,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 08:26:15,089 INFO L93 Difference]: Finished difference Result 52924 states and 75314 transitions. [2024-11-22 08:26:15,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 08:26:15,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) Word has length 228 [2024-11-22 08:26:15,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 08:26:15,264 INFO L225 Difference]: With dead ends: 52924 [2024-11-22 08:26:15,264 INFO L226 Difference]: Without dead ends: 39994 [2024-11-22 08:26:15,303 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 08:26:15,304 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 110 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 08:26:15,304 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 362 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 08:26:15,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39994 states. [2024-11-22 08:26:20,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39994 to 39992. [2024-11-22 08:26:20,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39992 states, 29499 states have (on average 1.3341469202345841) internal successors, (39356), 29783 states have internal predecessors, (39356), 8706 states have call successors, (8706), 1786 states have call predecessors, (8706), 1786 states have return successors, (8706), 8422 states have call predecessors, (8706), 8706 states have call successors, (8706) [2024-11-22 08:26:20,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39992 states to 39992 states and 56768 transitions. [2024-11-22 08:26:21,000 INFO L78 Accepts]: Start accepts. Automaton has 39992 states and 56768 transitions. Word has length 228 [2024-11-22 08:26:21,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 08:26:21,002 INFO L471 AbstractCegarLoop]: Abstraction has 39992 states and 56768 transitions. [2024-11-22 08:26:21,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34) [2024-11-22 08:26:21,002 INFO L276 IsEmpty]: Start isEmpty. Operand 39992 states and 56768 transitions. [2024-11-22 08:26:21,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-22 08:26:21,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 08:26:21,015 INFO L215 NwaCegarLoop]: trace histogram [34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 08:26:21,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 08:26:21,015 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-22 08:26:21,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 08:26:21,015 INFO L85 PathProgramCache]: Analyzing trace with hash 894170135, now seen corresponding path program 1 times [2024-11-22 08:26:21,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 08:26:21,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840817528] [2024-11-22 08:26:21,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 08:26:21,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 08:26:21,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 08:26:21,319 INFO L134 CoverageAnalysis]: Checked inductivity of 2244 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2244 trivial. 0 not checked. [2024-11-22 08:26:21,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 08:26:21,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840817528] [2024-11-22 08:26:21,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840817528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 08:26:21,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 08:26:21,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 08:26:21,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779041004] [2024-11-22 08:26:21,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 08:26:21,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 08:26:21,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 08:26:21,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 08:26:21,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 08:26:21,322 INFO L87 Difference]: Start difference. First operand 39992 states and 56768 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (34), 1 states have call predecessors, (34), 1 states have return successors, (34), 1 states have call predecessors, (34), 1 states have call successors, (34)