./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.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 4c8d69d1f3064c47045f447426cd788cf9b3338c09ab601cc7dd6947b7697cf1 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 01:22:38,618 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 01:22:38,702 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 01:22:38,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 01:22:38,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 01:22:38,744 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 01:22:38,745 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 01:22:38,745 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 01:22:38,746 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 01:22:38,747 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 01:22:38,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 01:22:38,748 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 01:22:38,749 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 01:22:38,749 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 01:22:38,751 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 01:22:38,752 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 01:22:38,752 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 01:22:38,752 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 01:22:38,752 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 01:22:38,753 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 01:22:38,753 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 01:22:38,755 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 01:22:38,756 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 01:22:38,756 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 01:22:38,756 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 01:22:38,757 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 01:22:38,757 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 01:22:38,757 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 01:22:38,757 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 01:22:38,758 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 01:22:38,758 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 01:22:38,758 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 01:22:38,759 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:22:38,759 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 01:22:38,759 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 01:22:38,760 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 01:22:38,760 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 01:22:38,760 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 01:22:38,760 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 01:22:38,760 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 01:22:38,761 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 01:22:38,761 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 01:22:38,761 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4c8d69d1f3064c47045f447426cd788cf9b3338c09ab601cc7dd6947b7697cf1 [2024-11-19 01:22:39,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 01:22:39,036 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 01:22:39,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 01:22:39,043 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 01:22:39,043 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 01:22:39,044 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.i [2024-11-19 01:22:40,579 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 01:22:40,785 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 01:22:40,785 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.i [2024-11-19 01:22:40,804 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143d0d03c/1b04478cb012483fa5d338576a855b55/FLAG8bcbccf19 [2024-11-19 01:22:40,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/143d0d03c/1b04478cb012483fa5d338576a855b55 [2024-11-19 01:22:40,820 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 01:22:40,821 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 01:22:40,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 01:22:40,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 01:22:40,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 01:22:40,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:40" (1/1) ... [2024-11-19 01:22:40,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@357a2c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:40, skipping insertion in model container [2024-11-19 01:22:40,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:22:40" (1/1) ... [2024-11-19 01:22:40,863 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 01:22:41,047 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.i[917,930] [2024-11-19 01:22:41,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:22:41,134 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 01:22:41,145 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-88.i[917,930] [2024-11-19 01:22:41,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 01:22:41,270 INFO L204 MainTranslator]: Completed translation [2024-11-19 01:22:41,271 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41 WrapperNode [2024-11-19 01:22:41,271 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 01:22:41,272 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 01:22:41,273 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 01:22:41,273 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 01:22:41,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,298 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,356 INFO L138 Inliner]: procedures = 30, calls = 163, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 537 [2024-11-19 01:22:41,356 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 01:22:41,357 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 01:22:41,357 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 01:22:41,357 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 01:22:41,379 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,388 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,405 WARN L109 MemorySlicer]: Omit memory slicing because it failed with the following exception: Unsupported: Memory array in LHS [2024-11-19 01:22:41,405 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,406 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,419 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,437 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 01:22:41,438 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 01:22:41,438 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 01:22:41,438 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 01:22:41,443 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (1/1) ... [2024-11-19 01:22:41,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 01:22:41,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:22:41,493 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 01:22:41,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 01:22:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 01:22:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~real [2024-11-19 01:22:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2024-11-19 01:22:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 01:22:41,550 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-19 01:22:41,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 01:22:41,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 01:22:41,667 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 01:22:41,669 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 01:22:42,437 INFO L? ?]: Removed 122 outVars from TransFormulas that were not future-live. [2024-11-19 01:22:42,437 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 01:22:42,455 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 01:22:42,456 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-19 01:22:42,457 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:22:42 BoogieIcfgContainer [2024-11-19 01:22:42,457 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 01:22:42,459 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 01:22:42,460 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 01:22:42,463 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 01:22:42,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:22:40" (1/3) ... [2024-11-19 01:22:42,464 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:22:42, skipping insertion in model container [2024-11-19 01:22:42,465 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:22:41" (2/3) ... [2024-11-19 01:22:42,465 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:22:42, skipping insertion in model container [2024-11-19 01:22:42,466 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:22:42" (3/3) ... [2024-11-19 01:22:42,468 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-88.i [2024-11-19 01:22:42,485 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 01:22:42,486 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 01:22:42,552 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 01:22:42,561 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;@660b339f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 01:22:42,562 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 01:22:42,566 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 100 states have internal predecessors, (141), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:42,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:42,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:42,582 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:42,583 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:42,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:42,588 INFO L85 PathProgramCache]: Analyzing trace with hash -100183722, now seen corresponding path program 1 times [2024-11-19 01:22:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:42,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045417964] [2024-11-19 01:22:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:42,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:43,091 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-19 01:22:43,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:43,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045417964] [2024-11-19 01:22:43,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045417964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:22:43,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461519717] [2024-11-19 01:22:43,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:43,093 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:22:43,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:22:43,096 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:22:43,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 01:22:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:43,409 INFO L255 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 01:22:43,420 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:22:43,456 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-19 01:22:43,457 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:22:43,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461519717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:43,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:22:43,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 01:22:43,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47535727] [2024-11-19 01:22:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:43,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 01:22:43,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:43,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 01:22:43,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:22:43,500 INFO L87 Difference]: Start difference. First operand has 119 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 100 states have internal predecessors, (141), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:43,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:43,540 INFO L93 Difference]: Finished difference Result 231 states and 361 transitions. [2024-11-19 01:22:43,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 01:22:43,542 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2024-11-19 01:22:43,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:43,552 INFO L225 Difference]: With dead ends: 231 [2024-11-19 01:22:43,552 INFO L226 Difference]: Without dead ends: 115 [2024-11-19 01:22:43,557 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 01:22:43,562 INFO L432 NwaCegarLoop]: 168 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, 168 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:43,563 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:43,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-19 01:22:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2024-11-19 01:22:43,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 96 states have (on average 1.3958333333333333) internal successors, (134), 96 states have internal predecessors, (134), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:43,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 168 transitions. [2024-11-19 01:22:43,620 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 168 transitions. Word has length 143 [2024-11-19 01:22:43,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:43,621 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 168 transitions. [2024-11-19 01:22:43,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 31.5) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:43,622 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 168 transitions. [2024-11-19 01:22:43,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:43,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:43,628 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:43,647 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 01:22:43,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-19 01:22:43,830 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:43,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash 753164736, now seen corresponding path program 1 times [2024-11-19 01:22:43,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:43,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763269024] [2024-11-19 01:22:43,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:43,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:43,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:44,308 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:44,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:44,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763269024] [2024-11-19 01:22:44,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763269024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:44,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:44,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:22:44,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035760332] [2024-11-19 01:22:44,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:44,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:22:44,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:44,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:22:44,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:44,314 INFO L87 Difference]: Start difference. First operand 115 states and 168 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:44,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:44,363 INFO L93 Difference]: Finished difference Result 229 states and 336 transitions. [2024-11-19 01:22:44,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:22:44,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2024-11-19 01:22:44,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:44,366 INFO L225 Difference]: With dead ends: 229 [2024-11-19 01:22:44,366 INFO L226 Difference]: Without dead ends: 117 [2024-11-19 01:22:44,367 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:44,368 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:44,369 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:44,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-19 01:22:44,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2024-11-19 01:22:44,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 98 states have (on average 1.3877551020408163) internal successors, (136), 98 states have internal predecessors, (136), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 170 transitions. [2024-11-19 01:22:44,380 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 170 transitions. Word has length 143 [2024-11-19 01:22:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:44,383 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 170 transitions. [2024-11-19 01:22:44,384 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 170 transitions. [2024-11-19 01:22:44,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:44,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:44,386 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:44,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 01:22:44,386 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:44,388 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:44,389 INFO L85 PathProgramCache]: Analyzing trace with hash -122854270, now seen corresponding path program 1 times [2024-11-19 01:22:44,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:44,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121406528] [2024-11-19 01:22:44,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:44,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:44,686 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:44,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121406528] [2024-11-19 01:22:44,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121406528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:44,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:44,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:22:44,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053846045] [2024-11-19 01:22:44,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:44,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:22:44,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:44,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:22:44,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:44,692 INFO L87 Difference]: Start difference. First operand 117 states and 170 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:44,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:44,746 INFO L93 Difference]: Finished difference Result 234 states and 341 transitions. [2024-11-19 01:22:44,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:22:44,750 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2024-11-19 01:22:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:44,752 INFO L225 Difference]: With dead ends: 234 [2024-11-19 01:22:44,752 INFO L226 Difference]: Without dead ends: 120 [2024-11-19 01:22:44,753 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:44,755 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 484 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:44,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 484 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2024-11-19 01:22:44,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 119. [2024-11-19 01:22:44,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 100 states have (on average 1.38) internal successors, (138), 100 states have internal predecessors, (138), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 172 transitions. [2024-11-19 01:22:44,775 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 172 transitions. Word has length 143 [2024-11-19 01:22:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:44,776 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 172 transitions. [2024-11-19 01:22:44,776 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 172 transitions. [2024-11-19 01:22:44,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:44,780 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:44,781 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:44,784 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 01:22:44,785 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:44,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:44,785 INFO L85 PathProgramCache]: Analyzing trace with hash 557204100, now seen corresponding path program 1 times [2024-11-19 01:22:44,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:44,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137530912] [2024-11-19 01:22:44,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:44,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:45,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:45,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137530912] [2024-11-19 01:22:45,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137530912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:45,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:45,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:22:45,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946040425] [2024-11-19 01:22:45,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:45,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:22:45,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:45,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:22:45,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:45,054 INFO L87 Difference]: Start difference. First operand 119 states and 172 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:45,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:45,085 INFO L93 Difference]: Finished difference Result 238 states and 345 transitions. [2024-11-19 01:22:45,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:22:45,086 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2024-11-19 01:22:45,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:45,090 INFO L225 Difference]: With dead ends: 238 [2024-11-19 01:22:45,091 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 01:22:45,092 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:45,096 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:45,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 485 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 01:22:45,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 121. [2024-11-19 01:22:45,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 102 states have (on average 1.3725490196078431) internal successors, (140), 102 states have internal predecessors, (140), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:45,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 174 transitions. [2024-11-19 01:22:45,115 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 174 transitions. Word has length 143 [2024-11-19 01:22:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:45,115 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 174 transitions. [2024-11-19 01:22:45,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 174 transitions. [2024-11-19 01:22:45,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:45,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:45,118 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:45,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 01:22:45,121 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:45,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:45,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1962755834, now seen corresponding path program 1 times [2024-11-19 01:22:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833321642] [2024-11-19 01:22:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:45,326 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:45,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:45,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833321642] [2024-11-19 01:22:45,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833321642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:45,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:45,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:22:45,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722702914] [2024-11-19 01:22:45,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:45,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:22:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:45,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:22:45,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:45,331 INFO L87 Difference]: Start difference. First operand 121 states and 174 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, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:45,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:45,354 INFO L93 Difference]: Finished difference Result 242 states and 349 transitions. [2024-11-19 01:22:45,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:22:45,355 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2024-11-19 01:22:45,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:45,357 INFO L225 Difference]: With dead ends: 242 [2024-11-19 01:22:45,358 INFO L226 Difference]: Without dead ends: 124 [2024-11-19 01:22:45,359 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:22:45,360 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 1 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:45,361 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 487 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:45,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-11-19 01:22:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 123. [2024-11-19 01:22:45,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 104 states have (on average 1.3653846153846154) internal successors, (142), 104 states have internal predecessors, (142), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:45,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 176 transitions. [2024-11-19 01:22:45,391 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 176 transitions. Word has length 143 [2024-11-19 01:22:45,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:45,391 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 176 transitions. [2024-11-19 01:22:45,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:45,392 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 176 transitions. [2024-11-19 01:22:45,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-19 01:22:45,393 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:45,393 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:45,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 01:22:45,395 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:45,395 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:45,395 INFO L85 PathProgramCache]: Analyzing trace with hash -1960908792, now seen corresponding path program 1 times [2024-11-19 01:22:45,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:45,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359622809] [2024-11-19 01:22:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:47,706 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:47,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:47,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359622809] [2024-11-19 01:22:47,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359622809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:47,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:47,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:22:47,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525485087] [2024-11-19 01:22:47,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:47,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:22:47,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:47,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:22:47,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:22:47,714 INFO L87 Difference]: Start difference. First operand 123 states and 176 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:48,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:48,373 INFO L93 Difference]: Finished difference Result 307 states and 440 transitions. [2024-11-19 01:22:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:22:48,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 143 [2024-11-19 01:22:48,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:48,375 INFO L225 Difference]: With dead ends: 307 [2024-11-19 01:22:48,375 INFO L226 Difference]: Without dead ends: 187 [2024-11-19 01:22:48,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-19 01:22:48,377 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 392 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 293 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:48,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 496 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 293 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:22:48,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2024-11-19 01:22:48,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 141. [2024-11-19 01:22:48,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 122 states have (on average 1.3852459016393444) internal successors, (169), 122 states have internal predecessors, (169), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:48,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 203 transitions. [2024-11-19 01:22:48,398 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 203 transitions. Word has length 143 [2024-11-19 01:22:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:48,399 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 203 transitions. [2024-11-19 01:22:48,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 203 transitions. [2024-11-19 01:22:48,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 01:22:48,400 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:48,401 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:48,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 01:22:48,401 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:48,404 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:48,404 INFO L85 PathProgramCache]: Analyzing trace with hash 163957603, now seen corresponding path program 1 times [2024-11-19 01:22:48,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:48,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343061426] [2024-11-19 01:22:48,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:48,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:51,108 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:51,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:51,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343061426] [2024-11-19 01:22:51,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343061426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:51,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:51,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:22:51,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841804075] [2024-11-19 01:22:51,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:51,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:22:51,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:51,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:22:51,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:22:51,112 INFO L87 Difference]: Start difference. First operand 141 states and 203 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:51,866 INFO L93 Difference]: Finished difference Result 339 states and 488 transitions. [2024-11-19 01:22:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:22:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 145 [2024-11-19 01:22:51,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:51,869 INFO L225 Difference]: With dead ends: 339 [2024-11-19 01:22:51,869 INFO L226 Difference]: Without dead ends: 201 [2024-11-19 01:22:51,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:22:51,870 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 611 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:51,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 341 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:22:51,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2024-11-19 01:22:51,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 139. [2024-11-19 01:22:51,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 120 states have (on average 1.3833333333333333) internal successors, (166), 120 states have internal predecessors, (166), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:51,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 200 transitions. [2024-11-19 01:22:51,890 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 200 transitions. Word has length 145 [2024-11-19 01:22:51,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:51,891 INFO L471 AbstractCegarLoop]: Abstraction has 139 states and 200 transitions. [2024-11-19 01:22:51,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:22:51,891 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 200 transitions. [2024-11-19 01:22:51,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 01:22:51,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:51,893 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:51,893 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 01:22:51,893 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:51,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:51,894 INFO L85 PathProgramCache]: Analyzing trace with hash -224934086, now seen corresponding path program 1 times [2024-11-19 01:22:51,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:51,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099744476] [2024-11-19 01:22:51,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:51,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:51,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:52,212 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 01:22:52,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099744476] [2024-11-19 01:22:52,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099744476] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:22:52,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969938316] [2024-11-19 01:22:52,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:52,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:22:52,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:22:52,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:22:52,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 01:22:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:52,520 INFO L255 TraceCheckSpWp]: Trace formula consists of 587 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 01:22:52,527 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:22:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:52,582 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 01:22:52,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969938316] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:52,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 01:22:52,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2024-11-19 01:22:52,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376996399] [2024-11-19 01:22:52,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:52,584 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:22:52,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:52,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:22:52,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:22:52,586 INFO L87 Difference]: Start difference. First operand 139 states and 200 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:52,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:52,631 INFO L93 Difference]: Finished difference Result 278 states and 401 transitions. [2024-11-19 01:22:52,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:22:52,632 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2024-11-19 01:22:52,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:52,634 INFO L225 Difference]: With dead ends: 278 [2024-11-19 01:22:52,635 INFO L226 Difference]: Without dead ends: 142 [2024-11-19 01:22:52,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:22:52,636 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 0 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 643 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:52,638 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 643 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:22:52,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-19 01:22:52,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-19 01:22:52,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 123 states have (on average 1.3739837398373984) internal successors, (169), 123 states have internal predecessors, (169), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:52,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 203 transitions. [2024-11-19 01:22:52,657 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 203 transitions. Word has length 145 [2024-11-19 01:22:52,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:52,658 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 203 transitions. [2024-11-19 01:22:52,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:52,659 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 203 transitions. [2024-11-19 01:22:52,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-19 01:22:52,660 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:52,660 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:52,679 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 01:22:52,861 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,SelfDestructingSolverStorable7 [2024-11-19 01:22:52,862 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:52,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:52,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1744053021, now seen corresponding path program 1 times [2024-11-19 01:22:52,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:52,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322010114] [2024-11-19 01:22:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:52,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:54,783 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:54,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:54,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322010114] [2024-11-19 01:22:54,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322010114] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:54,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:54,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:22:54,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25572077] [2024-11-19 01:22:54,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:22:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:54,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:22:54,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:22:54,788 INFO L87 Difference]: Start difference. First operand 142 states and 203 transitions. Second operand has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:55,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:55,582 INFO L93 Difference]: Finished difference Result 364 states and 521 transitions. [2024-11-19 01:22:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:22:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 145 [2024-11-19 01:22:55,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:55,586 INFO L225 Difference]: With dead ends: 364 [2024-11-19 01:22:55,587 INFO L226 Difference]: Without dead ends: 225 [2024-11-19 01:22:55,587 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:22:55,588 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 354 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:55,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [354 Valid, 468 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:22:55,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2024-11-19 01:22:55,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 146. [2024-11-19 01:22:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 127 states have (on average 1.3779527559055118) internal successors, (175), 127 states have internal predecessors, (175), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 209 transitions. [2024-11-19 01:22:55,610 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 209 transitions. Word has length 145 [2024-11-19 01:22:55,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:55,610 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 209 transitions. [2024-11-19 01:22:55,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.0) internal successors, (63), 9 states have internal predecessors, (63), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:55,611 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 209 transitions. [2024-11-19 01:22:55,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2024-11-19 01:22:55,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:55,612 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:55,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 01:22:55,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:55,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:55,613 INFO L85 PathProgramCache]: Analyzing trace with hash 885375514, now seen corresponding path program 1 times [2024-11-19 01:22:55,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:55,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784008251] [2024-11-19 01:22:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:55,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:22:57,132 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:22:57,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:22:57,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784008251] [2024-11-19 01:22:57,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784008251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:22:57,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:22:57,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:22:57,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194885920] [2024-11-19 01:22:57,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:22:57,134 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:22:57,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:22:57,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:22:57,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:22:57,137 INFO L87 Difference]: Start difference. First operand 146 states and 209 transitions. Second operand has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:57,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:22:57,934 INFO L93 Difference]: Finished difference Result 352 states and 502 transitions. [2024-11-19 01:22:57,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:22:57,935 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 146 [2024-11-19 01:22:57,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:22:57,937 INFO L225 Difference]: With dead ends: 352 [2024-11-19 01:22:57,937 INFO L226 Difference]: Without dead ends: 209 [2024-11-19 01:22:57,938 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:22:57,939 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 248 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:22:57,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 662 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:22:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-19 01:22:57,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 163. [2024-11-19 01:22:57,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 144 states have (on average 1.4027777777777777) internal successors, (202), 144 states have internal predecessors, (202), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:22:57,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 236 transitions. [2024-11-19 01:22:57,956 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 236 transitions. Word has length 146 [2024-11-19 01:22:57,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:22:57,958 INFO L471 AbstractCegarLoop]: Abstraction has 163 states and 236 transitions. [2024-11-19 01:22:57,958 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.111111111111111) internal successors, (64), 9 states have internal predecessors, (64), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:22:57,958 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 236 transitions. [2024-11-19 01:22:57,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-19 01:22:57,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:22:57,961 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:22:57,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 01:22:57,961 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:22:57,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:22:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash 143086974, now seen corresponding path program 1 times [2024-11-19 01:22:57,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:22:57,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917738562] [2024-11-19 01:22:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:22:57,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:22:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:00,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:00,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917738562] [2024-11-19 01:23:00,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917738562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:00,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:00,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:23:00,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839959819] [2024-11-19 01:23:00,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:00,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:23:00,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:23:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:23:00,177 INFO L87 Difference]: Start difference. First operand 163 states and 236 transitions. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:00,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:00,811 INFO L93 Difference]: Finished difference Result 329 states and 476 transitions. [2024-11-19 01:23:00,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:23:00,812 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2024-11-19 01:23:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:00,815 INFO L225 Difference]: With dead ends: 329 [2024-11-19 01:23:00,815 INFO L226 Difference]: Without dead ends: 169 [2024-11-19 01:23:00,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:23:00,817 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 275 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:00,817 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 367 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 01:23:00,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-19 01:23:00,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 147. [2024-11-19 01:23:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 128 states have (on average 1.3828125) internal successors, (177), 128 states have internal predecessors, (177), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-19 01:23:00,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 211 transitions. [2024-11-19 01:23:00,836 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 211 transitions. Word has length 147 [2024-11-19 01:23:00,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:00,836 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 211 transitions. [2024-11-19 01:23:00,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:00,836 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 211 transitions. [2024-11-19 01:23:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2024-11-19 01:23:00,838 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:00,838 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:00,839 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 01:23:00,839 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:00,839 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:00,839 INFO L85 PathProgramCache]: Analyzing trace with hash 945808159, now seen corresponding path program 1 times [2024-11-19 01:23:00,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:00,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72170408] [2024-11-19 01:23:00,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:00,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:01,634 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:01,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:01,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72170408] [2024-11-19 01:23:01,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72170408] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:01,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:01,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:23:01,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825830124] [2024-11-19 01:23:01,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:01,636 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:23:01,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:23:01,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:23:01,637 INFO L87 Difference]: Start difference. First operand 147 states and 211 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:01,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:01,938 INFO L93 Difference]: Finished difference Result 436 states and 628 transitions. [2024-11-19 01:23:01,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:23:01,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 147 [2024-11-19 01:23:01,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:01,942 INFO L225 Difference]: With dead ends: 436 [2024-11-19 01:23:01,943 INFO L226 Difference]: Without dead ends: 292 [2024-11-19 01:23:01,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:23:01,944 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 140 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:01,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 376 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 01:23:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-19 01:23:01,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 231. [2024-11-19 01:23:01,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 194 states have (on average 1.3608247422680413) internal successors, (264), 194 states have internal predecessors, (264), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:01,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 332 transitions. [2024-11-19 01:23:01,978 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 332 transitions. Word has length 147 [2024-11-19 01:23:01,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:01,979 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 332 transitions. [2024-11-19 01:23:01,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:01,979 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 332 transitions. [2024-11-19 01:23:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-19 01:23:01,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:01,981 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:01,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 01:23:01,981 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:01,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:01,982 INFO L85 PathProgramCache]: Analyzing trace with hash 366801108, now seen corresponding path program 1 times [2024-11-19 01:23:01,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:01,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691771092] [2024-11-19 01:23:01,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:01,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:02,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:02,542 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:02,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:02,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691771092] [2024-11-19 01:23:02,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691771092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:02,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:02,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 01:23:02,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867915212] [2024-11-19 01:23:02,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:02,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 01:23:02,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:02,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 01:23:02,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 01:23:02,545 INFO L87 Difference]: Start difference. First operand 231 states and 332 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:02,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:02,808 INFO L93 Difference]: Finished difference Result 469 states and 675 transitions. [2024-11-19 01:23:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 01:23:02,808 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 149 [2024-11-19 01:23:02,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:02,811 INFO L225 Difference]: With dead ends: 469 [2024-11-19 01:23:02,811 INFO L226 Difference]: Without dead ends: 292 [2024-11-19 01:23:02,812 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:23:02,813 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 136 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:02,813 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 379 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 01:23:02,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-19 01:23:02,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 233. [2024-11-19 01:23:02,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 196 states have (on average 1.3520408163265305) internal successors, (265), 196 states have internal predecessors, (265), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:02,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 333 transitions. [2024-11-19 01:23:02,844 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 333 transitions. Word has length 149 [2024-11-19 01:23:02,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:02,844 INFO L471 AbstractCegarLoop]: Abstraction has 233 states and 333 transitions. [2024-11-19 01:23:02,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:02,845 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 333 transitions. [2024-11-19 01:23:02,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:23:02,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:02,846 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:02,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 01:23:02,847 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:02,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:02,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1270086649, now seen corresponding path program 1 times [2024-11-19 01:23:02,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:02,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214087414] [2024-11-19 01:23:02,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:02,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:03,206 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:03,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:03,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214087414] [2024-11-19 01:23:03,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214087414] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:03,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:03,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 01:23:03,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972996546] [2024-11-19 01:23:03,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:03,208 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 01:23:03,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:03,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 01:23:03,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 01:23:03,208 INFO L87 Difference]: Start difference. First operand 233 states and 333 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:03,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:03,395 INFO L93 Difference]: Finished difference Result 418 states and 595 transitions. [2024-11-19 01:23:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 01:23:03,396 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2024-11-19 01:23:03,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:03,397 INFO L225 Difference]: With dead ends: 418 [2024-11-19 01:23:03,397 INFO L226 Difference]: Without dead ends: 274 [2024-11-19 01:23:03,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:23:03,398 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 86 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:03,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 427 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 01:23:03,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2024-11-19 01:23:03,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 238. [2024-11-19 01:23:03,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 238 states, 201 states have (on average 1.3532338308457712) internal successors, (272), 201 states have internal predecessors, (272), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:03,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 238 states to 238 states and 340 transitions. [2024-11-19 01:23:03,428 INFO L78 Accepts]: Start accepts. Automaton has 238 states and 340 transitions. Word has length 151 [2024-11-19 01:23:03,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:03,431 INFO L471 AbstractCegarLoop]: Abstraction has 238 states and 340 transitions. [2024-11-19 01:23:03,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:03,431 INFO L276 IsEmpty]: Start isEmpty. Operand 238 states and 340 transitions. [2024-11-19 01:23:03,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2024-11-19 01:23:03,433 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:03,433 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:03,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 01:23:03,433 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:03,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:03,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1488941367, now seen corresponding path program 1 times [2024-11-19 01:23:03,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:03,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822612977] [2024-11-19 01:23:03,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:03,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:03,966 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:03,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:03,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822612977] [2024-11-19 01:23:03,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822612977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:03,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:03,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 01:23:03,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468779150] [2024-11-19 01:23:03,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:03,968 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 01:23:03,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:03,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 01:23:03,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 01:23:03,969 INFO L87 Difference]: Start difference. First operand 238 states and 340 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:04,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:04,365 INFO L93 Difference]: Finished difference Result 449 states and 639 transitions. [2024-11-19 01:23:04,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 01:23:04,366 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2024-11-19 01:23:04,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:04,368 INFO L225 Difference]: With dead ends: 449 [2024-11-19 01:23:04,369 INFO L226 Difference]: Without dead ends: 300 [2024-11-19 01:23:04,370 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:23:04,371 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 120 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 638 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:04,371 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 638 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 01:23:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-19 01:23:04,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 244. [2024-11-19 01:23:04,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 207 states have (on average 1.3429951690821256) internal successors, (278), 207 states have internal predecessors, (278), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:04,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 346 transitions. [2024-11-19 01:23:04,399 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 346 transitions. Word has length 151 [2024-11-19 01:23:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:04,400 INFO L471 AbstractCegarLoop]: Abstraction has 244 states and 346 transitions. [2024-11-19 01:23:04,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:04,400 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 346 transitions. [2024-11-19 01:23:04,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:23:04,402 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:04,403 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:04,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 01:23:04,403 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:04,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:04,404 INFO L85 PathProgramCache]: Analyzing trace with hash -541227323, now seen corresponding path program 1 times [2024-11-19 01:23:04,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:04,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149268785] [2024-11-19 01:23:04,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:04,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:04,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:06,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:06,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149268785] [2024-11-19 01:23:06,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149268785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:06,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:06,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-19 01:23:06,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5236431] [2024-11-19 01:23:06,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:06,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 01:23:06,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:06,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 01:23:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 01:23:06,287 INFO L87 Difference]: Start difference. First operand 244 states and 346 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:07,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:07,039 INFO L93 Difference]: Finished difference Result 473 states and 670 transitions. [2024-11-19 01:23:07,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:23:07,039 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 152 [2024-11-19 01:23:07,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:07,042 INFO L225 Difference]: With dead ends: 473 [2024-11-19 01:23:07,042 INFO L226 Difference]: Without dead ends: 324 [2024-11-19 01:23:07,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-19 01:23:07,043 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 335 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 521 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:07,043 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 521 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:23:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2024-11-19 01:23:07,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 240. [2024-11-19 01:23:07,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 203 states have (on average 1.3399014778325122) internal successors, (272), 203 states have internal predecessors, (272), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:07,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 340 transitions. [2024-11-19 01:23:07,073 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 340 transitions. Word has length 152 [2024-11-19 01:23:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:07,073 INFO L471 AbstractCegarLoop]: Abstraction has 240 states and 340 transitions. [2024-11-19 01:23:07,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 340 transitions. [2024-11-19 01:23:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:23:07,075 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:07,075 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:07,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 01:23:07,076 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:07,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:07,076 INFO L85 PathProgramCache]: Analyzing trace with hash 422808358, now seen corresponding path program 1 times [2024-11-19 01:23:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:07,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257869404] [2024-11-19 01:23:07,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:07,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:07,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:09,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:09,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257869404] [2024-11-19 01:23:09,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257869404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:09,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:09,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:23:09,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192712517] [2024-11-19 01:23:09,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:09,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:23:09,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:09,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:23:09,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:23:09,632 INFO L87 Difference]: Start difference. First operand 240 states and 340 transitions. Second operand has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-19 01:23:10,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:10,678 INFO L93 Difference]: Finished difference Result 473 states and 667 transitions. [2024-11-19 01:23:10,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:23:10,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) Word has length 152 [2024-11-19 01:23:10,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:10,681 INFO L225 Difference]: With dead ends: 473 [2024-11-19 01:23:10,681 INFO L226 Difference]: Without dead ends: 326 [2024-11-19 01:23:10,681 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2024-11-19 01:23:10,682 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 411 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:10,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 542 Invalid, 492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-19 01:23:10,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2024-11-19 01:23:10,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 297. [2024-11-19 01:23:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 260 states have (on average 1.3461538461538463) internal successors, (350), 260 states have internal predecessors, (350), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:10,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 418 transitions. [2024-11-19 01:23:10,725 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 418 transitions. Word has length 152 [2024-11-19 01:23:10,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:10,725 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 418 transitions. [2024-11-19 01:23:10,726 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.363636363636363) internal successors, (70), 12 states have internal predecessors, (70), 4 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-19 01:23:10,727 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 418 transitions. [2024-11-19 01:23:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2024-11-19 01:23:10,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:10,728 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:10,728 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 01:23:10,729 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:10,729 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:10,729 INFO L85 PathProgramCache]: Analyzing trace with hash 705062213, now seen corresponding path program 1 times [2024-11-19 01:23:10,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:10,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805857481] [2024-11-19 01:23:10,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:10,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:12,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:12,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805857481] [2024-11-19 01:23:12,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805857481] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:12,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:12,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:23:12,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630219535] [2024-11-19 01:23:12,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:12,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:23:12,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:12,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:23:12,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:23:12,449 INFO L87 Difference]: Start difference. First operand 297 states and 418 transitions. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:23:13,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:13,305 INFO L93 Difference]: Finished difference Result 665 states and 941 transitions. [2024-11-19 01:23:13,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:23:13,306 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 152 [2024-11-19 01:23:13,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:13,308 INFO L225 Difference]: With dead ends: 665 [2024-11-19 01:23:13,308 INFO L226 Difference]: Without dead ends: 473 [2024-11-19 01:23:13,309 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:23:13,310 INFO L432 NwaCegarLoop]: 110 mSDtfsCounter, 583 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 583 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:13,310 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [583 Valid, 540 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:23:13,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2024-11-19 01:23:13,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 305. [2024-11-19 01:23:13,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 268 states have (on average 1.3507462686567164) internal successors, (362), 268 states have internal predecessors, (362), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:13,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 430 transitions. [2024-11-19 01:23:13,351 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 430 transitions. Word has length 152 [2024-11-19 01:23:13,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:13,352 INFO L471 AbstractCegarLoop]: Abstraction has 305 states and 430 transitions. [2024-11-19 01:23:13,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:23:13,353 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 430 transitions. [2024-11-19 01:23:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 01:23:13,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:13,356 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:13,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 01:23:13,356 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:13,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:13,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1628395318, now seen corresponding path program 1 times [2024-11-19 01:23:13,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:13,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273745544] [2024-11-19 01:23:13,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:13,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:15,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:15,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273745544] [2024-11-19 01:23:15,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1273745544] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:15,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:15,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 01:23:15,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102292450] [2024-11-19 01:23:15,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:15,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 01:23:15,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:15,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 01:23:15,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:23:15,595 INFO L87 Difference]: Start difference. First operand 305 states and 430 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:23:16,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:16,545 INFO L93 Difference]: Finished difference Result 501 states and 714 transitions. [2024-11-19 01:23:16,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:23:16,547 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2024-11-19 01:23:16,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:16,548 INFO L225 Difference]: With dead ends: 501 [2024-11-19 01:23:16,549 INFO L226 Difference]: Without dead ends: 305 [2024-11-19 01:23:16,549 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2024-11-19 01:23:16,550 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 380 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:16,550 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [380 Valid, 429 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:23:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-11-19 01:23:16,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 245. [2024-11-19 01:23:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 208 states have (on average 1.3173076923076923) internal successors, (274), 208 states have internal predecessors, (274), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:16,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 342 transitions. [2024-11-19 01:23:16,608 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 342 transitions. Word has length 154 [2024-11-19 01:23:16,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:16,609 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 342 transitions. [2024-11-19 01:23:16,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 11 states have internal predecessors, (72), 2 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-19 01:23:16,609 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 342 transitions. [2024-11-19 01:23:16,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 01:23:16,612 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:16,613 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:16,613 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 01:23:16,613 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:16,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:16,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1686606453, now seen corresponding path program 1 times [2024-11-19 01:23:16,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:16,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7239651] [2024-11-19 01:23:16,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:16,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:16,697 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:16,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:16,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7239651] [2024-11-19 01:23:16,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7239651] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:16,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:16,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 01:23:16,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820259190] [2024-11-19 01:23:16,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:16,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 01:23:16,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:16,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 01:23:16,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 01:23:16,701 INFO L87 Difference]: Start difference. First operand 245 states and 342 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:16,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:16,744 INFO L93 Difference]: Finished difference Result 406 states and 571 transitions. [2024-11-19 01:23:16,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 01:23:16,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 154 [2024-11-19 01:23:16,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:16,746 INFO L225 Difference]: With dead ends: 406 [2024-11-19 01:23:16,746 INFO L226 Difference]: Without dead ends: 247 [2024-11-19 01:23:16,747 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 [2024-11-19 01:23:16,748 INFO L432 NwaCegarLoop]: 166 mSDtfsCounter, 0 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:16,748 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 324 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 01:23:16,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2024-11-19 01:23:16,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2024-11-19 01:23:16,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 210 states have (on average 1.3142857142857143) internal successors, (276), 210 states have internal predecessors, (276), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:16,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 344 transitions. [2024-11-19 01:23:16,789 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 344 transitions. Word has length 154 [2024-11-19 01:23:16,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:16,789 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 344 transitions. [2024-11-19 01:23:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-19 01:23:16,789 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 344 transitions. [2024-11-19 01:23:16,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 01:23:16,791 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:16,791 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:16,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 01:23:16,791 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:16,791 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:16,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1541026190, now seen corresponding path program 1 times [2024-11-19 01:23:16,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:16,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973373595] [2024-11-19 01:23:16,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:16,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:16,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:18,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:18,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973373595] [2024-11-19 01:23:18,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973373595] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:18,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:18,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 01:23:18,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022402561] [2024-11-19 01:23:18,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:18,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 01:23:18,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:18,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 01:23:18,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-19 01:23:18,780 INFO L87 Difference]: Start difference. First operand 247 states and 344 transitions. Second operand has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-19 01:23:19,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:19,809 INFO L93 Difference]: Finished difference Result 252 states and 349 transitions. [2024-11-19 01:23:19,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 01:23:19,811 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 154 [2024-11-19 01:23:19,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:19,812 INFO L225 Difference]: With dead ends: 252 [2024-11-19 01:23:19,812 INFO L226 Difference]: Without dead ends: 250 [2024-11-19 01:23:19,813 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2024-11-19 01:23:19,814 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 253 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:19,814 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 482 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 01:23:19,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2024-11-19 01:23:19,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2024-11-19 01:23:19,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 213 states have (on average 1.3098591549295775) internal successors, (279), 213 states have internal predecessors, (279), 34 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:19,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 347 transitions. [2024-11-19 01:23:19,880 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 347 transitions. Word has length 154 [2024-11-19 01:23:19,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:19,881 INFO L471 AbstractCegarLoop]: Abstraction has 250 states and 347 transitions. [2024-11-19 01:23:19,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.545454545454546) internal successors, (72), 12 states have internal predecessors, (72), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-19 01:23:19,881 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 347 transitions. [2024-11-19 01:23:19,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-19 01:23:19,882 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:19,883 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:19,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 01:23:19,883 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:19,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:19,883 INFO L85 PathProgramCache]: Analyzing trace with hash -1539179148, now seen corresponding path program 1 times [2024-11-19 01:23:19,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:19,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912184010] [2024-11-19 01:23:19,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:19,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 33 proven. 15 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-19 01:23:22,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:22,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912184010] [2024-11-19 01:23:22,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912184010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:23:22,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310353184] [2024-11-19 01:23:22,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:22,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:23:22,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 01:23:22,355 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 01:23:22,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 01:23:22,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:22,745 INFO L255 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-19 01:23:22,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 01:23:22,873 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 54 [2024-11-19 01:23:23,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:23,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:24,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:24,515 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:24,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:25,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 91 [2024-11-19 01:23:25,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 98 [2024-11-19 01:23:26,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 98 [2024-11-19 01:23:27,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 98 [2024-11-19 01:23:27,901 INFO L349 Elim1Store]: treesize reduction 15, result has 54.5 percent of original size [2024-11-19 01:23:27,902 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 133 treesize of output 115 [2024-11-19 01:23:28,644 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 01:23:28,645 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 510 treesize of output 406 [2024-11-19 01:23:28,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 81 [2024-11-19 01:23:29,599 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 168 proven. 129 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2024-11-19 01:23:29,600 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 01:23:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310353184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 01:23:29,809 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 01:23:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 20 [2024-11-19 01:23:29,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416058762] [2024-11-19 01:23:29,810 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 01:23:29,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 01:23:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 01:23:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2024-11-19 01:23:29,812 INFO L87 Difference]: Start difference. First operand 250 states and 347 transitions. Second operand has 20 states, 17 states have (on average 7.235294117647059) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 7 states have call predecessors, (34), 10 states have call successors, (34) [2024-11-19 01:23:34,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:34,758 INFO L93 Difference]: Finished difference Result 445 states and 613 transitions. [2024-11-19 01:23:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 01:23:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 7.235294117647059) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 7 states have call predecessors, (34), 10 states have call successors, (34) Word has length 154 [2024-11-19 01:23:34,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:34,761 INFO L225 Difference]: With dead ends: 445 [2024-11-19 01:23:34,761 INFO L226 Difference]: Without dead ends: 262 [2024-11-19 01:23:34,763 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 190 SyntacticMatches, 8 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=189, Invalid=741, Unknown=0, NotChecked=0, Total=930 [2024-11-19 01:23:34,764 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 123 mSDsluCounter, 951 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:34,767 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1062 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-19 01:23:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-19 01:23:34,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 256. [2024-11-19 01:23:34,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 218 states have (on average 1.3027522935779816) internal successors, (284), 218 states have internal predecessors, (284), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:34,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 352 transitions. [2024-11-19 01:23:34,819 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 352 transitions. Word has length 154 [2024-11-19 01:23:34,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:34,819 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 352 transitions. [2024-11-19 01:23:34,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 7.235294117647059) internal successors, (123), 20 states have internal predecessors, (123), 10 states have call successors, (34), 4 states have call predecessors, (34), 6 states have return successors, (34), 7 states have call predecessors, (34), 10 states have call successors, (34) [2024-11-19 01:23:34,820 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 352 transitions. [2024-11-19 01:23:34,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-19 01:23:34,821 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:34,821 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:34,838 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 01:23:35,021 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 01:23:35,022 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:35,022 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -2018937927, now seen corresponding path program 1 times [2024-11-19 01:23:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709793935] [2024-11-19 01:23:35,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:35,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 01:23:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-19 01:23:36,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 01:23:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709793935] [2024-11-19 01:23:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709793935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 01:23:36,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 01:23:36,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 01:23:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299755168] [2024-11-19 01:23:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 01:23:36,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 01:23:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 01:23:36,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 01:23:36,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 01:23:36,385 INFO L87 Difference]: Start difference. First operand 256 states and 352 transitions. Second operand has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-19 01:23:37,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 01:23:37,046 INFO L93 Difference]: Finished difference Result 460 states and 636 transitions. [2024-11-19 01:23:37,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 01:23:37,047 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2024-11-19 01:23:37,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 01:23:37,049 INFO L225 Difference]: With dead ends: 460 [2024-11-19 01:23:37,049 INFO L226 Difference]: Without dead ends: 271 [2024-11-19 01:23:37,049 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2024-11-19 01:23:37,050 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 158 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-19 01:23:37,050 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 386 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-19 01:23:37,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-19 01:23:37,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 262. [2024-11-19 01:23:37,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 224 states have (on average 1.3035714285714286) internal successors, (292), 224 states have internal predecessors, (292), 34 states have call successors, (34), 3 states have call predecessors, (34), 3 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2024-11-19 01:23:37,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 360 transitions. [2024-11-19 01:23:37,100 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 360 transitions. Word has length 156 [2024-11-19 01:23:37,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 01:23:37,100 INFO L471 AbstractCegarLoop]: Abstraction has 262 states and 360 transitions. [2024-11-19 01:23:37,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.571428571428571) internal successors, (74), 8 states have internal predecessors, (74), 3 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-19 01:23:37,100 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 360 transitions. [2024-11-19 01:23:37,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-19 01:23:37,101 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 01:23:37,101 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 01:23:37,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 01:23:37,102 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 01:23:37,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 01:23:37,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1386278343, now seen corresponding path program 1 times [2024-11-19 01:23:37,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 01:23:37,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639671881] [2024-11-19 01:23:37,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 01:23:37,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 01:23:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat