/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-21 02:56:02,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-21 02:56:02,181 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-21 02:56:02,184 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-21 02:56:02,185 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-21 02:56:02,197 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-21 02:56:02,198 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-21 02:56:02,198 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-21 02:56:02,198 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-21 02:56:02,199 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-21 02:56:02,199 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-21 02:56:02,199 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-21 02:56:02,199 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-21 02:56:02,200 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-21 02:56:02,200 INFO L153 SettingsManager]: * Use SBE=true [2023-12-21 02:56:02,200 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-21 02:56:02,200 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-21 02:56:02,201 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-21 02:56:02,201 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-21 02:56:02,201 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-21 02:56:02,201 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-21 02:56:02,202 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-21 02:56:02,203 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-21 02:56:02,203 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-21 02:56:02,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-21 02:56:02,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-21 02:56:02,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:56:02,204 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-21 02:56:02,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-21 02:56:02,205 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-21 02:56:02,205 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-21 02:56:02,205 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-21 02:56:02,205 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-21 02:56:02,398 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-21 02:56:02,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-21 02:56:02,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-21 02:56:02,418 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-21 02:56:02,418 INFO L274 PluginConnector]: CDTParser initialized [2023-12-21 02:56:02,419 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-90.i [2023-12-21 02:56:03,399 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-21 02:56:03,577 INFO L384 CDTParser]: Found 1 translation units. [2023-12-21 02:56:03,577 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-90.i [2023-12-21 02:56:03,583 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77603213c/6ce10e5682a54e428a12fe86cfe621b2/FLAG5e919dd68 [2023-12-21 02:56:03,592 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77603213c/6ce10e5682a54e428a12fe86cfe621b2 [2023-12-21 02:56:03,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-21 02:56:03,594 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-21 02:56:03,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-21 02:56:03,595 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-21 02:56:03,602 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-21 02:56:03,602 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,603 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dd0780 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03, skipping insertion in model container [2023-12-21 02:56:03,603 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,627 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-21 02:56:03,726 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-90.i[917,930] [2023-12-21 02:56:03,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:56:03,783 INFO L202 MainTranslator]: Completed pre-run [2023-12-21 02:56:03,791 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_variablewrapping_wrapper-sp_file-90.i[917,930] [2023-12-21 02:56:03,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-21 02:56:03,842 INFO L206 MainTranslator]: Completed translation [2023-12-21 02:56:03,842 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03 WrapperNode [2023-12-21 02:56:03,842 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-21 02:56:03,843 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-21 02:56:03,843 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-21 02:56:03,843 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-21 02:56:03,848 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,894 INFO L138 Inliner]: procedures = 26, calls = 162, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 478 [2023-12-21 02:56:03,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-21 02:56:03,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-21 02:56:03,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-21 02:56:03,895 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-21 02:56:03,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,908 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,915 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,937 INFO L175 MemorySlicer]: Split 130 memory accesses to 2 slices as follows [2, 128]. 98 percent of accesses are in the largest equivalence class. The 17 initializations are split as follows [2, 15]. The 19 writes are split as follows [0, 19]. [2023-12-21 02:56:03,937 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,937 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,947 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,950 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,952 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,953 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,956 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-21 02:56:03,956 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-21 02:56:03,956 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-21 02:56:03,957 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-21 02:56:03,957 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (1/1) ... [2023-12-21 02:56:03,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-21 02:56:03,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:56:04,013 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) [2023-12-21 02:56:04,048 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 [2023-12-21 02:56:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-21 02:56:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-12-21 02:56:04,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-12-21 02:56:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-12-21 02:56:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-12-21 02:56:04,054 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-12-21 02:56:04,055 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-12-21 02:56:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-21 02:56:04,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-21 02:56:04,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-21 02:56:04,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-21 02:56:04,134 INFO L241 CfgBuilder]: Building ICFG [2023-12-21 02:56:04,135 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-21 02:56:04,486 INFO L282 CfgBuilder]: Performing block encoding [2023-12-21 02:56:04,510 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-21 02:56:04,510 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-12-21 02:56:04,511 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:56:04 BoogieIcfgContainer [2023-12-21 02:56:04,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-21 02:56:04,522 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-21 02:56:04,522 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-21 02:56:04,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-21 02:56:04,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:56:03" (1/3) ... [2023-12-21 02:56:04,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e0d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:56:04, skipping insertion in model container [2023-12-21 02:56:04,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:56:03" (2/3) ... [2023-12-21 02:56:04,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191e0d1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:56:04, skipping insertion in model container [2023-12-21 02:56:04,526 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:56:04" (3/3) ... [2023-12-21 02:56:04,526 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_variablewrapping_wrapper-sp_file-90.i [2023-12-21 02:56:04,539 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-21 02:56:04,539 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-12-21 02:56:04,592 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-21 02:56:04,597 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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;@227c3435, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-21 02:56:04,597 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-12-21 02:56:04,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:04,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:56:04,622 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:04,623 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:04,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:04,629 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:04,629 INFO L85 PathProgramCache]: Analyzing trace with hash 584961870, now seen corresponding path program 1 times [2023-12-21 02:56:04,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:04,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689272080] [2023-12-21 02:56:04,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:04,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:04,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:04,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:04,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:04,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:04,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:04,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:04,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:04,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:04,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:04,968 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:04,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:04,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689272080] [2023-12-21 02:56:04,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689272080] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:04,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:04,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-21 02:56:04,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683022125] [2023-12-21 02:56:04,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:04,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-21 02:56:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:05,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-21 02:56:05,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:56:05,010 INFO L87 Difference]: Start difference. First operand has 104 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 82 states have internal predecessors, (114), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:05,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:05,060 INFO L93 Difference]: Finished difference Result 205 states and 326 transitions. [2023-12-21 02:56:05,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-21 02:56:05,062 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) Word has length 148 [2023-12-21 02:56:05,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:05,069 INFO L225 Difference]: With dead ends: 205 [2023-12-21 02:56:05,069 INFO L226 Difference]: Without dead ends: 102 [2023-12-21 02:56:05,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-21 02:56:05,075 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:05,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:56:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2023-12-21 02:56:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2023-12-21 02:56:05,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 80 states have (on average 1.3625) internal successors, (109), 80 states have internal predecessors, (109), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:05,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 149 transitions. [2023-12-21 02:56:05,120 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 149 transitions. Word has length 148 [2023-12-21 02:56:05,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:05,121 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 149 transitions. [2023-12-21 02:56:05,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:05,122 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 149 transitions. [2023-12-21 02:56:05,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-12-21 02:56:05,128 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:05,128 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:05,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-21 02:56:05,129 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:05,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:05,129 INFO L85 PathProgramCache]: Analyzing trace with hash 2029456678, now seen corresponding path program 1 times [2023-12-21 02:56:05,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:05,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570967684] [2023-12-21 02:56:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:05,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:05,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:05,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:05,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:05,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:05,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:05,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:05,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:05,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:05,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:05,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:05,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:05,606 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:05,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:05,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570967684] [2023-12-21 02:56:05,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570967684] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:05,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:05,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:56:05,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743507413] [2023-12-21 02:56:05,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:05,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:56:05,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:05,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:56:05,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:56:05,613 INFO L87 Difference]: Start difference. First operand 102 states and 149 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:05,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:05,686 INFO L93 Difference]: Finished difference Result 231 states and 339 transitions. [2023-12-21 02:56:05,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:56:05,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 148 [2023-12-21 02:56:05,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:05,690 INFO L225 Difference]: With dead ends: 231 [2023-12-21 02:56:05,690 INFO L226 Difference]: Without dead ends: 130 [2023-12-21 02:56:05,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:56:05,692 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 61 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:05,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 466 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:56:05,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-12-21 02:56:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2023-12-21 02:56:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 82 states have (on average 1.353658536585366) internal successors, (111), 82 states have internal predecessors, (111), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 151 transitions. [2023-12-21 02:56:05,703 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 151 transitions. Word has length 148 [2023-12-21 02:56:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:05,704 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 151 transitions. [2023-12-21 02:56:05,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:05,704 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 151 transitions. [2023-12-21 02:56:05,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:56:05,705 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:05,705 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:05,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-21 02:56:05,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:05,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:05,706 INFO L85 PathProgramCache]: Analyzing trace with hash 737193547, now seen corresponding path program 1 times [2023-12-21 02:56:05,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:05,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799549474] [2023-12-21 02:56:05,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:05,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:06,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:06,339 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:06,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:06,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799549474] [2023-12-21 02:56:06,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799549474] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:06,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:06,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:56:06,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083934745] [2023-12-21 02:56:06,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:06,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:56:06,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:06,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:56:06,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:56:06,340 INFO L87 Difference]: Start difference. First operand 104 states and 151 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:06,528 INFO L93 Difference]: Finished difference Result 214 states and 311 transitions. [2023-12-21 02:56:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:56:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-21 02:56:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:06,530 INFO L225 Difference]: With dead ends: 214 [2023-12-21 02:56:06,530 INFO L226 Difference]: Without dead ends: 111 [2023-12-21 02:56:06,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:56:06,535 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 109 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:06,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 388 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:56:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-12-21 02:56:06,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 109. [2023-12-21 02:56:06,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.3448275862068966) internal successors, (117), 87 states have internal predecessors, (117), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:06,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 157 transitions. [2023-12-21 02:56:06,554 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 157 transitions. Word has length 150 [2023-12-21 02:56:06,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:06,558 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 157 transitions. [2023-12-21 02:56:06,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:06,558 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 157 transitions. [2023-12-21 02:56:06,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-12-21 02:56:06,559 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:06,559 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:06,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-21 02:56:06,560 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:06,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:06,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1159895373, now seen corresponding path program 1 times [2023-12-21 02:56:06,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:06,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426987806] [2023-12-21 02:56:06,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:06,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:07,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:07,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:07,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:07,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:07,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:07,212 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:07,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:07,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426987806] [2023-12-21 02:56:07,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426987806] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:07,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:07,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:56:07,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786198598] [2023-12-21 02:56:07,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:07,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:56:07,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:07,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:56:07,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:56:07,214 INFO L87 Difference]: Start difference. First operand 109 states and 157 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:07,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:07,577 INFO L93 Difference]: Finished difference Result 252 states and 362 transitions. [2023-12-21 02:56:07,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:56:07,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 150 [2023-12-21 02:56:07,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:07,579 INFO L225 Difference]: With dead ends: 252 [2023-12-21 02:56:07,579 INFO L226 Difference]: Without dead ends: 144 [2023-12-21 02:56:07,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:56:07,585 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 229 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 377 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:07,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 354 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 377 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:56:07,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-12-21 02:56:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 111. [2023-12-21 02:56:07,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 89 states have (on average 1.3370786516853932) internal successors, (119), 89 states have internal predecessors, (119), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:07,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 159 transitions. [2023-12-21 02:56:07,600 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 159 transitions. Word has length 150 [2023-12-21 02:56:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:07,601 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 159 transitions. [2023-12-21 02:56:07,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:07,601 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 159 transitions. [2023-12-21 02:56:07,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 02:56:07,603 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:07,603 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:07,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-21 02:56:07,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:07,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:07,604 INFO L85 PathProgramCache]: Analyzing trace with hash -685099385, now seen corresponding path program 1 times [2023-12-21 02:56:07,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:07,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633082571] [2023-12-21 02:56:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:08,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:08,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:08,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:08,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:08,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:08,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:08,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:08,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:08,406 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:08,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:08,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633082571] [2023-12-21 02:56:08,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633082571] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:08,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:08,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:56:08,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143486426] [2023-12-21 02:56:08,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:08,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:56:08,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:08,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:56:08,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:56:08,407 INFO L87 Difference]: Start difference. First operand 111 states and 159 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:08,953 INFO L93 Difference]: Finished difference Result 343 states and 492 transitions. [2023-12-21 02:56:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:56:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-21 02:56:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:08,955 INFO L225 Difference]: With dead ends: 343 [2023-12-21 02:56:08,955 INFO L226 Difference]: Without dead ends: 233 [2023-12-21 02:56:08,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:56:08,956 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 379 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:08,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 429 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:56:08,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2023-12-21 02:56:08,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 132. [2023-12-21 02:56:08,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 110 states have (on average 1.3545454545454545) internal successors, (149), 110 states have internal predecessors, (149), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:08,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 189 transitions. [2023-12-21 02:56:08,969 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 189 transitions. Word has length 151 [2023-12-21 02:56:08,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:08,969 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 189 transitions. [2023-12-21 02:56:08,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 9 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:08,969 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 189 transitions. [2023-12-21 02:56:08,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-12-21 02:56:08,971 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:08,971 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:08,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-21 02:56:08,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:08,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:08,972 INFO L85 PathProgramCache]: Analyzing trace with hash -943264823, now seen corresponding path program 1 times [2023-12-21 02:56:08,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:08,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62099598] [2023-12-21 02:56:08,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:08,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:09,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:09,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:09,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:09,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:09,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:10,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:10,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:10,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:10,021 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:10,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:10,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62099598] [2023-12-21 02:56:10,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62099598] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:10,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:10,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:56:10,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899043184] [2023-12-21 02:56:10,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:10,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:56:10,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:10,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:56:10,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:56:10,023 INFO L87 Difference]: Start difference. First operand 132 states and 189 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:10,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:10,402 INFO L93 Difference]: Finished difference Result 335 states and 478 transitions. [2023-12-21 02:56:10,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:56:10,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 151 [2023-12-21 02:56:10,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:10,403 INFO L225 Difference]: With dead ends: 335 [2023-12-21 02:56:10,403 INFO L226 Difference]: Without dead ends: 204 [2023-12-21 02:56:10,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:56:10,405 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 258 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:10,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 566 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:56:10,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2023-12-21 02:56:10,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 151. [2023-12-21 02:56:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 129 states have (on average 1.3565891472868217) internal successors, (175), 129 states have internal predecessors, (175), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:10,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 215 transitions. [2023-12-21 02:56:10,416 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 215 transitions. Word has length 151 [2023-12-21 02:56:10,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:10,417 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 215 transitions. [2023-12-21 02:56:10,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:10,417 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 215 transitions. [2023-12-21 02:56:10,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:10,419 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:10,419 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:10,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-21 02:56:10,419 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:10,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:10,419 INFO L85 PathProgramCache]: Analyzing trace with hash 370204746, now seen corresponding path program 1 times [2023-12-21 02:56:10,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:10,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186437231] [2023-12-21 02:56:10,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:10,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:11,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:11,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:11,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:11,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:11,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:11,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:11,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:11,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:11,293 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:11,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:11,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186437231] [2023-12-21 02:56:11,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186437231] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:11,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:11,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:56:11,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979506988] [2023-12-21 02:56:11,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:11,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:56:11,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:11,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:56:11,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:11,294 INFO L87 Difference]: Start difference. First operand 151 states and 215 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:11,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:11,971 INFO L93 Difference]: Finished difference Result 433 states and 617 transitions. [2023-12-21 02:56:11,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:56:11,972 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 152 [2023-12-21 02:56:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:11,974 INFO L225 Difference]: With dead ends: 433 [2023-12-21 02:56:11,974 INFO L226 Difference]: Without dead ends: 283 [2023-12-21 02:56:11,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:56:11,976 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 361 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:11,976 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 450 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:56:11,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-12-21 02:56:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 166. [2023-12-21 02:56:11,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 144 states have (on average 1.3611111111111112) internal successors, (196), 144 states have internal predecessors, (196), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:11,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 236 transitions. [2023-12-21 02:56:11,989 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 236 transitions. Word has length 152 [2023-12-21 02:56:11,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:11,989 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 236 transitions. [2023-12-21 02:56:11,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:11,989 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 236 transitions. [2023-12-21 02:56:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:11,990 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:11,990 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:11,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-12-21 02:56:11,990 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:11,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:11,991 INFO L85 PathProgramCache]: Analyzing trace with hash 112039308, now seen corresponding path program 1 times [2023-12-21 02:56:11,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:11,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555094337] [2023-12-21 02:56:11,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:11,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:12,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:13,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:13,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:13,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:13,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:13,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:13,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:13,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:13,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:13,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:13,323 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:13,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:13,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555094337] [2023-12-21 02:56:13,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555094337] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:13,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:13,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:56:13,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329622066] [2023-12-21 02:56:13,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:13,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:56:13,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:13,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:56:13,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:13,325 INFO L87 Difference]: Start difference. First operand 166 states and 236 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:14,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:14,398 INFO L93 Difference]: Finished difference Result 438 states and 621 transitions. [2023-12-21 02:56:14,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:56:14,399 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 152 [2023-12-21 02:56:14,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:14,400 INFO L225 Difference]: With dead ends: 438 [2023-12-21 02:56:14,400 INFO L226 Difference]: Without dead ends: 273 [2023-12-21 02:56:14,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:56:14,401 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 312 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 1100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:14,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 932 Invalid, 1100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:56:14,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2023-12-21 02:56:14,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 139. [2023-12-21 02:56:14,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 117 states have (on average 1.3504273504273505) internal successors, (158), 117 states have internal predecessors, (158), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:14,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 198 transitions. [2023-12-21 02:56:14,422 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 198 transitions. Word has length 152 [2023-12-21 02:56:14,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:14,424 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 198 transitions. [2023-12-21 02:56:14,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:14,424 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 198 transitions. [2023-12-21 02:56:14,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:14,425 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:14,425 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:14,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-12-21 02:56:14,426 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:14,426 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:14,426 INFO L85 PathProgramCache]: Analyzing trace with hash 372292528, now seen corresponding path program 1 times [2023-12-21 02:56:14,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:14,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116118944] [2023-12-21 02:56:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:14,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:14,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:16,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:16,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:16,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:16,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:16,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:16,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:16,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:16,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:16,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:16,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:16,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:16,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116118944] [2023-12-21 02:56:16,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116118944] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:16,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:16,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 02:56:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109551838] [2023-12-21 02:56:16,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:16,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 02:56:16,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 02:56:16,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:56:16,624 INFO L87 Difference]: Start difference. First operand 139 states and 198 transitions. Second operand has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:56:18,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:18,764 INFO L93 Difference]: Finished difference Result 398 states and 572 transitions. [2023-12-21 02:56:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 02:56:18,766 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 152 [2023-12-21 02:56:18,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:18,767 INFO L225 Difference]: With dead ends: 398 [2023-12-21 02:56:18,767 INFO L226 Difference]: Without dead ends: 260 [2023-12-21 02:56:18,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=278, Invalid=778, Unknown=0, NotChecked=0, Total=1056 [2023-12-21 02:56:18,768 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 795 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1262 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 796 SdHoareTripleChecker+Valid, 895 SdHoareTripleChecker+Invalid, 1307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:18,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [796 Valid, 895 Invalid, 1307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1262 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 02:56:18,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2023-12-21 02:56:18,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 144. [2023-12-21 02:56:18,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.3524590163934427) internal successors, (165), 122 states have internal predecessors, (165), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:18,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 205 transitions. [2023-12-21 02:56:18,783 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 205 transitions. Word has length 152 [2023-12-21 02:56:18,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:18,784 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 205 transitions. [2023-12-21 02:56:18,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 19 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:56:18,784 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 205 transitions. [2023-12-21 02:56:18,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:18,785 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:18,786 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:18,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-12-21 02:56:18,786 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:18,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:18,786 INFO L85 PathProgramCache]: Analyzing trace with hash -214513486, now seen corresponding path program 1 times [2023-12-21 02:56:18,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:18,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395106613] [2023-12-21 02:56:18,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:18,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:18,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:20,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:20,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:20,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:20,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:21,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:21,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:21,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:21,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:21,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:21,152 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:21,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:21,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395106613] [2023-12-21 02:56:21,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395106613] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:21,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:21,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:56:21,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371991904] [2023-12-21 02:56:21,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:21,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:56:21,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:21,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:56:21,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:56:21,154 INFO L87 Difference]: Start difference. First operand 144 states and 205 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:56:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:21,955 INFO L93 Difference]: Finished difference Result 377 states and 539 transitions. [2023-12-21 02:56:21,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 02:56:21,956 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 152 [2023-12-21 02:56:21,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:21,957 INFO L225 Difference]: With dead ends: 377 [2023-12-21 02:56:21,957 INFO L226 Difference]: Without dead ends: 234 [2023-12-21 02:56:21,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506 [2023-12-21 02:56:21,958 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 356 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:21,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 639 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:56:21,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2023-12-21 02:56:21,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 144. [2023-12-21 02:56:21,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.3442622950819672) internal successors, (164), 122 states have internal predecessors, (164), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:21,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 204 transitions. [2023-12-21 02:56:21,971 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 204 transitions. Word has length 152 [2023-12-21 02:56:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:21,971 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 204 transitions. [2023-12-21 02:56:21,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:56:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 204 transitions. [2023-12-21 02:56:21,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:21,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:21,972 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:21,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-12-21 02:56:21,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:21,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:21,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1216055374, now seen corresponding path program 1 times [2023-12-21 02:56:21,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:21,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998310385] [2023-12-21 02:56:21,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:21,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:23,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:23,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:23,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:23,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:23,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:23,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:23,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:23,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:23,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:23,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:23,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:23,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998310385] [2023-12-21 02:56:23,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998310385] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:23,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:23,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:56:23,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214532828] [2023-12-21 02:56:23,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:23,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:56:23,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:23,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:56:23,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:56:23,949 INFO L87 Difference]: Start difference. First operand 144 states and 204 transitions. Second operand has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:56:24,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:24,775 INFO L93 Difference]: Finished difference Result 346 states and 492 transitions. [2023-12-21 02:56:24,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:56:24,776 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 152 [2023-12-21 02:56:24,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:24,777 INFO L225 Difference]: With dead ends: 346 [2023-12-21 02:56:24,777 INFO L226 Difference]: Without dead ends: 203 [2023-12-21 02:56:24,777 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:56:24,778 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 579 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:24,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [580 Valid, 464 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:56:24,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-12-21 02:56:24,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 144. [2023-12-21 02:56:24,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 122 states have (on average 1.3360655737704918) internal successors, (163), 122 states have internal predecessors, (163), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-12-21 02:56:24,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 203 transitions. [2023-12-21 02:56:24,790 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 203 transitions. Word has length 152 [2023-12-21 02:56:24,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:24,790 INFO L495 AbstractCegarLoop]: Abstraction has 144 states and 203 transitions. [2023-12-21 02:56:24,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 16 states have internal predecessors, (55), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:56:24,790 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 203 transitions. [2023-12-21 02:56:24,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-12-21 02:56:24,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:24,791 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:24,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-12-21 02:56:24,791 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:24,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:24,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1802861388, now seen corresponding path program 1 times [2023-12-21 02:56:24,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:24,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142472529] [2023-12-21 02:56:24,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:24,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:29,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:29,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:29,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:29,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:29,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:29,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:29,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:29,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 15 proven. 42 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:56:29,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142472529] [2023-12-21 02:56:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142472529] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:56:29,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77660765] [2023-12-21 02:56:29,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:29,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:56:29,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:56:29,386 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:56:29,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-21 02:56:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:29,577 INFO L262 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 50 conjunts are in the unsatisfiable core [2023-12-21 02:56:29,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:56:30,247 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 15 treesize of output 1 [2023-12-21 02:56:30,600 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-12-21 02:56:31,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 02:56:31,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 02:56:31,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 02:56:31,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2023-12-21 02:56:31,866 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:31,867 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:31,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-12-21 02:56:31,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:31,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:31,937 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:56:31,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 20 [2023-12-21 02:56:31,984 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 384 proven. 186 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2023-12-21 02:56:31,984 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:56:32,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77660765] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:56:32,271 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:56:32,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 13] total 42 [2023-12-21 02:56:32,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460667472] [2023-12-21 02:56:32,271 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-21 02:56:32,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2023-12-21 02:56:32,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:32,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2023-12-21 02:56:32,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1935, Unknown=0, NotChecked=0, Total=2070 [2023-12-21 02:56:32,273 INFO L87 Difference]: Start difference. First operand 144 states and 203 transitions. Second operand has 42 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 40 states have internal predecessors, (119), 12 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-21 02:56:44,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:44,295 INFO L93 Difference]: Finished difference Result 801 states and 1111 transitions. [2023-12-21 02:56:44,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2023-12-21 02:56:44,296 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 40 states have internal predecessors, (119), 12 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) Word has length 152 [2023-12-21 02:56:44,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:44,299 INFO L225 Difference]: With dead ends: 801 [2023-12-21 02:56:44,299 INFO L226 Difference]: Without dead ends: 658 [2023-12-21 02:56:44,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3108 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=1388, Invalid=11268, Unknown=0, NotChecked=0, Total=12656 [2023-12-21 02:56:44,305 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 1932 mSDsluCounter, 3714 mSDsCounter, 0 mSdLazyCounter, 6030 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 3889 SdHoareTripleChecker+Invalid, 6483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 6030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:44,305 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 3889 Invalid, 6483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 6030 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-12-21 02:56:44,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2023-12-21 02:56:44,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 235. [2023-12-21 02:56:44,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 187 states have (on average 1.267379679144385) internal successors, (237), 187 states have internal predecessors, (237), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:44,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 317 transitions. [2023-12-21 02:56:44,363 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 317 transitions. Word has length 152 [2023-12-21 02:56:44,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:44,363 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 317 transitions. [2023-12-21 02:56:44,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 3.1315789473684212) internal successors, (119), 40 states have internal predecessors, (119), 12 states have call successors, (40), 5 states have call predecessors, (40), 8 states have return successors, (40), 10 states have call predecessors, (40), 12 states have call successors, (40) [2023-12-21 02:56:44,364 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 317 transitions. [2023-12-21 02:56:44,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2023-12-21 02:56:44,365 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:44,365 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:44,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-21 02:56:44,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-12-21 02:56:44,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:44,573 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:44,573 INFO L85 PathProgramCache]: Analyzing trace with hash 846795601, now seen corresponding path program 1 times [2023-12-21 02:56:44,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:44,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740809090] [2023-12-21 02:56:44,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:44,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:44,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:49,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:49,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:49,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:49,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:49,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:49,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:49,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:49,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:49,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:49,954 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 21 proven. 36 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:56:49,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740809090] [2023-12-21 02:56:49,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740809090] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:56:49,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934034774] [2023-12-21 02:56:49,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:49,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:56:49,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:56:49,955 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) [2023-12-21 02:56:49,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-21 02:56:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:50,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 34 conjunts are in the unsatisfiable core [2023-12-21 02:56:50,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:56:50,776 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 64 treesize of output 43 [2023-12-21 02:56:50,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:50,779 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-12-21 02:56:50,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:56:50,793 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 02:56:50,997 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:56:50,998 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 81 treesize of output 69 [2023-12-21 02:56:51,151 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:56:51,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-21 02:56:51,459 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:51,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934034774] provided 1 perfect and 1 imperfect interpolant sequences [2023-12-21 02:56:51,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-12-21 02:56:51,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [31, 10] total 42 [2023-12-21 02:56:51,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423711163] [2023-12-21 02:56:51,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:51,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:56:51,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:56:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1600, Unknown=0, NotChecked=0, Total=1722 [2023-12-21 02:56:51,467 INFO L87 Difference]: Start difference. First operand 235 states and 317 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:52,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:52,084 INFO L93 Difference]: Finished difference Result 476 states and 652 transitions. [2023-12-21 02:56:52,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:56:52,085 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 153 [2023-12-21 02:56:52,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:52,090 INFO L225 Difference]: With dead ends: 476 [2023-12-21 02:56:52,090 INFO L226 Difference]: Without dead ends: 325 [2023-12-21 02:56:52,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=169, Invalid=2183, Unknown=0, NotChecked=0, Total=2352 [2023-12-21 02:56:52,094 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 193 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:52,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 947 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:56:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2023-12-21 02:56:52,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 205. [2023-12-21 02:56:52,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 157 states have (on average 1.2420382165605095) internal successors, (195), 158 states have internal predecessors, (195), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:52,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 275 transitions. [2023-12-21 02:56:52,131 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 275 transitions. Word has length 153 [2023-12-21 02:56:52,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:52,131 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 275 transitions. [2023-12-21 02:56:52,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 8 states have internal predecessors, (56), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:52,132 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 275 transitions. [2023-12-21 02:56:52,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:52,133 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:52,133 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:52,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-21 02:56:52,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-12-21 02:56:52,348 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:52,348 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:52,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1204004231, now seen corresponding path program 1 times [2023-12-21 02:56:52,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:52,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566908745] [2023-12-21 02:56:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:52,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:53,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:53,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:53,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:53,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:53,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:53,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:53,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:53,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:53,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:53,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:53,213 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:53,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:53,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566908745] [2023-12-21 02:56:53,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566908745] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:53,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:53,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:56:53,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869573241] [2023-12-21 02:56:53,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:56:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:53,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:56:53,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:53,215 INFO L87 Difference]: Start difference. First operand 205 states and 275 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:53,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:53,922 INFO L93 Difference]: Finished difference Result 472 states and 643 transitions. [2023-12-21 02:56:53,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:56:53,924 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-21 02:56:53,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:53,926 INFO L225 Difference]: With dead ends: 472 [2023-12-21 02:56:53,926 INFO L226 Difference]: Without dead ends: 324 [2023-12-21 02:56:53,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:56:53,927 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 417 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 417 SdHoareTripleChecker+Valid, 526 SdHoareTripleChecker+Invalid, 935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:53,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [417 Valid, 526 Invalid, 935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:56:53,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2023-12-21 02:56:53,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 223. [2023-12-21 02:56:53,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 175 states have (on average 1.2457142857142858) internal successors, (218), 176 states have internal predecessors, (218), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:53,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 298 transitions. [2023-12-21 02:56:53,964 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 298 transitions. Word has length 154 [2023-12-21 02:56:53,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:53,967 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 298 transitions. [2023-12-21 02:56:53,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 298 transitions. [2023-12-21 02:56:53,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:53,969 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:53,969 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:53,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-12-21 02:56:53,969 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:53,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:53,969 INFO L85 PathProgramCache]: Analyzing trace with hash 945838793, now seen corresponding path program 1 times [2023-12-21 02:56:53,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:53,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038941850] [2023-12-21 02:56:53,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:53,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:54,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:54,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:54,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:54,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:54,303 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:54,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:54,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038941850] [2023-12-21 02:56:54,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038941850] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:54,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:54,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:56:54,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068625423] [2023-12-21 02:56:54,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:54,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:56:54,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:54,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:56:54,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:56:54,305 INFO L87 Difference]: Start difference. First operand 223 states and 298 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:54,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:54,586 INFO L93 Difference]: Finished difference Result 446 states and 600 transitions. [2023-12-21 02:56:54,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:56:54,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-21 02:56:54,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:54,587 INFO L225 Difference]: With dead ends: 446 [2023-12-21 02:56:54,587 INFO L226 Difference]: Without dead ends: 280 [2023-12-21 02:56:54,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:56:54,590 INFO L413 NwaCegarLoop]: 151 mSDtfsCounter, 204 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:54,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 464 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:56:54,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2023-12-21 02:56:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 237. [2023-12-21 02:56:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 189 states have (on average 1.2380952380952381) internal successors, (234), 190 states have internal predecessors, (234), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 314 transitions. [2023-12-21 02:56:54,631 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 314 transitions. Word has length 154 [2023-12-21 02:56:54,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:54,633 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 314 transitions. [2023-12-21 02:56:54,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:54,633 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 314 transitions. [2023-12-21 02:56:54,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:54,633 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:54,633 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:54,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-12-21 02:56:54,634 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:54,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:54,634 INFO L85 PathProgramCache]: Analyzing trace with hash -2079403652, now seen corresponding path program 1 times [2023-12-21 02:56:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:54,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280600298] [2023-12-21 02:56:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:55,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:55,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:55,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:55,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:55,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:55,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:55,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:55,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:55,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:55,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:55,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:55,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:55,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280600298] [2023-12-21 02:56:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280600298] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:55,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:56:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661629140] [2023-12-21 02:56:55,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:55,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:56:55,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:55,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:56:55,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:55,719 INFO L87 Difference]: Start difference. First operand 237 states and 314 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:56,397 INFO L93 Difference]: Finished difference Result 510 states and 685 transitions. [2023-12-21 02:56:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:56:56,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2023-12-21 02:56:56,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:56,399 INFO L225 Difference]: With dead ends: 510 [2023-12-21 02:56:56,399 INFO L226 Difference]: Without dead ends: 330 [2023-12-21 02:56:56,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:56:56,400 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 501 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 501 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:56,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [501 Valid, 369 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:56:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2023-12-21 02:56:56,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 252. [2023-12-21 02:56:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 204 states have (on average 1.2549019607843137) internal successors, (256), 205 states have internal predecessors, (256), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:56,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 336 transitions. [2023-12-21 02:56:56,441 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 336 transitions. Word has length 154 [2023-12-21 02:56:56,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:56,442 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 336 transitions. [2023-12-21 02:56:56,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:56,442 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 336 transitions. [2023-12-21 02:56:56,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:56,442 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:56,443 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:56,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-12-21 02:56:56,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:56,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:56,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1068286402, now seen corresponding path program 1 times [2023-12-21 02:56:56,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:56,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500986727] [2023-12-21 02:56:56,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:56,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:56,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:56,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:56,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:56,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:56,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:56,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:57,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:57,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:57,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:57,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:57,051 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:57,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:57,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500986727] [2023-12-21 02:56:57,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500986727] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:57,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:57,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:56:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973107827] [2023-12-21 02:56:57,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:57,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:56:57,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:57,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:56:57,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:57,053 INFO L87 Difference]: Start difference. First operand 252 states and 336 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:57,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:57,596 INFO L93 Difference]: Finished difference Result 509 states and 682 transitions. [2023-12-21 02:56:57,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:56:57,596 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2023-12-21 02:56:57,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:57,598 INFO L225 Difference]: With dead ends: 509 [2023-12-21 02:56:57,598 INFO L226 Difference]: Without dead ends: 314 [2023-12-21 02:56:57,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:56:57,598 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 412 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:57,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [412 Valid, 352 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 643 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:56:57,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2023-12-21 02:56:57,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 258. [2023-12-21 02:56:57,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 210 states have (on average 1.2476190476190476) internal successors, (262), 211 states have internal predecessors, (262), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:57,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 342 transitions. [2023-12-21 02:56:57,643 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 342 transitions. Word has length 154 [2023-12-21 02:56:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:57,643 INFO L495 AbstractCegarLoop]: Abstraction has 258 states and 342 transitions. [2023-12-21 02:56:57,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:57,643 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 342 transitions. [2023-12-21 02:56:57,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:57,644 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:57,644 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:57,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-12-21 02:56:57,645 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:57,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:57,645 INFO L85 PathProgramCache]: Analyzing trace with hash 811825287, now seen corresponding path program 1 times [2023-12-21 02:56:57,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:57,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681252882] [2023-12-21 02:56:57,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:57,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:58,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:58,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:58,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:58,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:58,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:58,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:58,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:58,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:58,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:58,063 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:58,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:58,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681252882] [2023-12-21 02:56:58,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681252882] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:58,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:58,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:56:58,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416593723] [2023-12-21 02:56:58,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:58,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:56:58,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:56:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:56:58,064 INFO L87 Difference]: Start difference. First operand 258 states and 342 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:58,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:58,450 INFO L93 Difference]: Finished difference Result 488 states and 651 transitions. [2023-12-21 02:56:58,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:56:58,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 154 [2023-12-21 02:56:58,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:58,451 INFO L225 Difference]: With dead ends: 488 [2023-12-21 02:56:58,451 INFO L226 Difference]: Without dead ends: 287 [2023-12-21 02:56:58,452 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:56:58,452 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 244 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:58,452 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 385 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:56:58,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-21 02:56:58,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 244. [2023-12-21 02:56:58,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 196 states have (on average 1.2346938775510203) internal successors, (242), 197 states have internal predecessors, (242), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:58,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 322 transitions. [2023-12-21 02:56:58,489 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 322 transitions. Word has length 154 [2023-12-21 02:56:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:58,489 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 322 transitions. [2023-12-21 02:56:58,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:56:58,490 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 322 transitions. [2023-12-21 02:56:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:58,490 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:58,490 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:58,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-12-21 02:56:58,491 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:58,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:58,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1804644038, now seen corresponding path program 1 times [2023-12-21 02:56:58,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:58,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472675351] [2023-12-21 02:56:58,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:58,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:56:59,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:56:59,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:56:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:56:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:56:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:56:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:56:59,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:56:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:56:59,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:56:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:56:59,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:56:59,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:56:59,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:56:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:56:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:56:59,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:56:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:56:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:56:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:56:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:56:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:56:59,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:56:59,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472675351] [2023-12-21 02:56:59,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472675351] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:56:59,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:56:59,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:56:59,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827561699] [2023-12-21 02:56:59,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:56:59,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:56:59,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:56:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:56:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:56:59,158 INFO L87 Difference]: Start difference. First operand 244 states and 322 transitions. Second operand has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:56:59,660 INFO L93 Difference]: Finished difference Result 536 states and 717 transitions. [2023-12-21 02:56:59,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:56:59,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2023-12-21 02:56:59,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:56:59,665 INFO L225 Difference]: With dead ends: 536 [2023-12-21 02:56:59,665 INFO L226 Difference]: Without dead ends: 349 [2023-12-21 02:56:59,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:56:59,666 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 435 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:56:59,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 406 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:56:59,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-12-21 02:56:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 262. [2023-12-21 02:56:59,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.2476635514018692) internal successors, (267), 215 states have internal predecessors, (267), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:56:59,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 347 transitions. [2023-12-21 02:56:59,702 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 347 transitions. Word has length 154 [2023-12-21 02:56:59,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:56:59,702 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 347 transitions. [2023-12-21 02:56:59,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.7) internal successors, (57), 10 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:56:59,703 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 347 transitions. [2023-12-21 02:56:59,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2023-12-21 02:56:59,703 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:56:59,704 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:56:59,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-12-21 02:56:59,704 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:56:59,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:56:59,704 INFO L85 PathProgramCache]: Analyzing trace with hash -793526788, now seen corresponding path program 1 times [2023-12-21 02:56:59,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:56:59,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466101329] [2023-12-21 02:56:59,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:56:59,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:56:59,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:01,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:01,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:01,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:01,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:01,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:01,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:01,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:01,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:01,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:01,328 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:01,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:01,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466101329] [2023-12-21 02:57:01,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466101329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:01,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:01,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:57:01,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258821517] [2023-12-21 02:57:01,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:01,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:57:01,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:01,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:57:01,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:57:01,331 INFO L87 Difference]: Start difference. First operand 262 states and 347 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:02,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:02,016 INFO L93 Difference]: Finished difference Result 534 states and 714 transitions. [2023-12-21 02:57:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:57:02,017 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 154 [2023-12-21 02:57:02,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:02,019 INFO L225 Difference]: With dead ends: 534 [2023-12-21 02:57:02,019 INFO L226 Difference]: Without dead ends: 329 [2023-12-21 02:57:02,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 51 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:57:02,022 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 304 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:02,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 419 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-21 02:57:02,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 262. [2023-12-21 02:57:02,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 214 states have (on average 1.2383177570093458) internal successors, (265), 215 states have internal predecessors, (265), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:02,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 345 transitions. [2023-12-21 02:57:02,067 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 345 transitions. Word has length 154 [2023-12-21 02:57:02,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:02,067 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 345 transitions. [2023-12-21 02:57:02,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 11 states have internal predecessors, (57), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:02,067 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 345 transitions. [2023-12-21 02:57:02,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2023-12-21 02:57:02,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:02,068 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:02,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-12-21 02:57:02,068 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:02,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:02,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1394359478, now seen corresponding path program 1 times [2023-12-21 02:57:02,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:02,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578258897] [2023-12-21 02:57:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:02,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:02,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:02,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:02,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:02,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:02,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:02,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:02,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:02,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:02,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:02,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:02,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:02,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578258897] [2023-12-21 02:57:02,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578258897] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:02,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:02,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:57:02,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858352011] [2023-12-21 02:57:02,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:02,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:57:02,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:02,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:57:02,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:57:02,967 INFO L87 Difference]: Start difference. First operand 262 states and 345 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:03,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:03,816 INFO L93 Difference]: Finished difference Result 534 states and 712 transitions. [2023-12-21 02:57:03,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:57:03,816 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 155 [2023-12-21 02:57:03,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:03,817 INFO L225 Difference]: With dead ends: 534 [2023-12-21 02:57:03,817 INFO L226 Difference]: Without dead ends: 329 [2023-12-21 02:57:03,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=381, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:57:03,819 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 477 mSDsluCounter, 525 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:03,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 642 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 723 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:03,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2023-12-21 02:57:03,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 264. [2023-12-21 02:57:03,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 216 states have (on average 1.2407407407407407) internal successors, (268), 217 states have internal predecessors, (268), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:03,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 348 transitions. [2023-12-21 02:57:03,857 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 348 transitions. Word has length 155 [2023-12-21 02:57:03,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:03,857 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 348 transitions. [2023-12-21 02:57:03,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 348 transitions. [2023-12-21 02:57:03,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:03,858 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:03,858 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:03,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-12-21 02:57:03,858 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:03,858 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:03,859 INFO L85 PathProgramCache]: Analyzing trace with hash -362818556, now seen corresponding path program 1 times [2023-12-21 02:57:03,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:03,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695280207] [2023-12-21 02:57:03,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:03,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:04,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:04,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:04,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:04,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:04,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:04,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:05,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:05,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:05,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:05,042 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:05,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:05,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695280207] [2023-12-21 02:57:05,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695280207] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:05,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:05,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:57:05,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971074734] [2023-12-21 02:57:05,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:05,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:57:05,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:05,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:57:05,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:57:05,043 INFO L87 Difference]: Start difference. First operand 264 states and 348 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:05,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:05,591 INFO L93 Difference]: Finished difference Result 494 states and 655 transitions. [2023-12-21 02:57:05,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:57:05,592 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 156 [2023-12-21 02:57:05,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:05,595 INFO L225 Difference]: With dead ends: 494 [2023-12-21 02:57:05,595 INFO L226 Difference]: Without dead ends: 287 [2023-12-21 02:57:05,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:57:05,599 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 507 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 507 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:05,599 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [507 Valid, 315 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:05,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2023-12-21 02:57:05,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 264. [2023-12-21 02:57:05,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 216 states have (on average 1.2407407407407407) internal successors, (268), 217 states have internal predecessors, (268), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:05,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 348 transitions. [2023-12-21 02:57:05,660 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 348 transitions. Word has length 156 [2023-12-21 02:57:05,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:05,661 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 348 transitions. [2023-12-21 02:57:05,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:05,661 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 348 transitions. [2023-12-21 02:57:05,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:05,661 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:05,662 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:05,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-12-21 02:57:05,662 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:05,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:05,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1805864811, now seen corresponding path program 1 times [2023-12-21 02:57:05,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:05,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330273379] [2023-12-21 02:57:05,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:05,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:06,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:06,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:06,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:06,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:06,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:06,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:06,050 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:06,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:06,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330273379] [2023-12-21 02:57:06,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330273379] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:06,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:06,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:57:06,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541871834] [2023-12-21 02:57:06,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:06,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:57:06,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:06,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:57:06,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:57:06,052 INFO L87 Difference]: Start difference. First operand 264 states and 348 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:06,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:06,412 INFO L93 Difference]: Finished difference Result 548 states and 722 transitions. [2023-12-21 02:57:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:57:06,437 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 156 [2023-12-21 02:57:06,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:06,438 INFO L225 Difference]: With dead ends: 548 [2023-12-21 02:57:06,438 INFO L226 Difference]: Without dead ends: 341 [2023-12-21 02:57:06,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:57:06,439 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 207 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:06,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 302 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2023-12-21 02:57:06,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 315. [2023-12-21 02:57:06,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 267 states have (on average 1.243445692883895) internal successors, (332), 268 states have internal predecessors, (332), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:06,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 412 transitions. [2023-12-21 02:57:06,481 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 412 transitions. Word has length 156 [2023-12-21 02:57:06,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:06,481 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 412 transitions. [2023-12-21 02:57:06,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:06,481 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 412 transitions. [2023-12-21 02:57:06,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:06,482 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:06,482 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:06,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-12-21 02:57:06,482 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:06,482 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:06,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2096075475, now seen corresponding path program 1 times [2023-12-21 02:57:06,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:06,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323679129] [2023-12-21 02:57:06,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:06,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:07,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:07,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:07,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:07,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:07,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:07,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:07,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:07,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:07,170 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:07,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:07,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323679129] [2023-12-21 02:57:07,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323679129] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:07,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:07,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:57:07,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607600459] [2023-12-21 02:57:07,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:07,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:57:07,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:07,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:57:07,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:57:07,171 INFO L87 Difference]: Start difference. First operand 315 states and 412 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:07,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:07,993 INFO L93 Difference]: Finished difference Result 611 states and 802 transitions. [2023-12-21 02:57:07,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:57:07,993 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2023-12-21 02:57:07,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:07,994 INFO L225 Difference]: With dead ends: 611 [2023-12-21 02:57:07,994 INFO L226 Difference]: Without dead ends: 353 [2023-12-21 02:57:07,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:57:07,996 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 394 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 776 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 776 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:07,996 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 723 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 776 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:57:07,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-12-21 02:57:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 319. [2023-12-21 02:57:08,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 271 states have (on average 1.2398523985239853) internal successors, (336), 272 states have internal predecessors, (336), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 416 transitions. [2023-12-21 02:57:08,043 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 416 transitions. Word has length 156 [2023-12-21 02:57:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:08,043 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 416 transitions. [2023-12-21 02:57:08,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 12 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:08,046 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 416 transitions. [2023-12-21 02:57:08,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:08,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:08,047 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:08,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-12-21 02:57:08,048 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:08,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:08,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1654400386, now seen corresponding path program 1 times [2023-12-21 02:57:08,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814079855] [2023-12-21 02:57:08,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:08,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:08,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:08,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:08,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:08,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:08,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:08,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:08,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814079855] [2023-12-21 02:57:08,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814079855] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:08,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:08,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:57:08,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64151957] [2023-12-21 02:57:08,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:57:08,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:08,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:57:08,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:57:08,422 INFO L87 Difference]: Start difference. First operand 319 states and 416 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:08,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:08,737 INFO L93 Difference]: Finished difference Result 624 states and 818 transitions. [2023-12-21 02:57:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:57:08,737 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2023-12-21 02:57:08,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:08,738 INFO L225 Difference]: With dead ends: 624 [2023-12-21 02:57:08,738 INFO L226 Difference]: Without dead ends: 362 [2023-12-21 02:57:08,739 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:57:08,740 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 193 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 382 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:08,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 382 Invalid, 412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:57:08,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2023-12-21 02:57:08,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 319. [2023-12-21 02:57:08,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 271 states have (on average 1.2361623616236161) internal successors, (335), 272 states have internal predecessors, (335), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:08,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 415 transitions. [2023-12-21 02:57:08,790 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 415 transitions. Word has length 156 [2023-12-21 02:57:08,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:08,790 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 415 transitions. [2023-12-21 02:57:08,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:08,790 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 415 transitions. [2023-12-21 02:57:08,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:08,791 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:08,791 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:08,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-12-21 02:57:08,791 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:08,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:08,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1317857406, now seen corresponding path program 1 times [2023-12-21 02:57:08,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:08,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888779428] [2023-12-21 02:57:08,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:08,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:08,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:09,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:09,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:09,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:09,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:09,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:09,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:09,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:09,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:09,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:09,934 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:09,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:09,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888779428] [2023-12-21 02:57:09,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888779428] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:09,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:09,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:57:09,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611960802] [2023-12-21 02:57:09,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:09,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:57:09,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:09,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:57:09,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:57:09,936 INFO L87 Difference]: Start difference. First operand 319 states and 415 transitions. Second operand has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:10,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:10,379 INFO L93 Difference]: Finished difference Result 639 states and 836 transitions. [2023-12-21 02:57:10,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:57:10,380 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2023-12-21 02:57:10,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:10,381 INFO L225 Difference]: With dead ends: 639 [2023-12-21 02:57:10,381 INFO L226 Difference]: Without dead ends: 377 [2023-12-21 02:57:10,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:57:10,382 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 338 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:10,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 407 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2023-12-21 02:57:10,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 329. [2023-12-21 02:57:10,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 281 states have (on average 1.2348754448398576) internal successors, (347), 282 states have internal predecessors, (347), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:10,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 427 transitions. [2023-12-21 02:57:10,443 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 427 transitions. Word has length 156 [2023-12-21 02:57:10,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:10,443 INFO L495 AbstractCegarLoop]: Abstraction has 329 states and 427 transitions. [2023-12-21 02:57:10,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.363636363636363) internal successors, (59), 12 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:10,444 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 427 transitions. [2023-12-21 02:57:10,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:10,444 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:10,445 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:10,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-12-21 02:57:10,445 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:10,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:10,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1469321831, now seen corresponding path program 1 times [2023-12-21 02:57:10,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:10,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556691278] [2023-12-21 02:57:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:10,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:10,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:10,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:10,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:10,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:10,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:10,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:10,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:10,782 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:10,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:10,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556691278] [2023-12-21 02:57:10,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556691278] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:10,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:10,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-12-21 02:57:10,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337538484] [2023-12-21 02:57:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:10,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-12-21 02:57:10,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:10,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-12-21 02:57:10,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:57:10,783 INFO L87 Difference]: Start difference. First operand 329 states and 427 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:11,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:11,122 INFO L93 Difference]: Finished difference Result 680 states and 880 transitions. [2023-12-21 02:57:11,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:57:11,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2023-12-21 02:57:11,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:11,124 INFO L225 Difference]: With dead ends: 680 [2023-12-21 02:57:11,124 INFO L226 Difference]: Without dead ends: 408 [2023-12-21 02:57:11,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:57:11,125 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 163 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:11,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 388 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:11,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2023-12-21 02:57:11,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 384. [2023-12-21 02:57:11,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 336 states have (on average 1.2321428571428572) internal successors, (414), 337 states have internal predecessors, (414), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 494 transitions. [2023-12-21 02:57:11,173 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 494 transitions. Word has length 156 [2023-12-21 02:57:11,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:11,173 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 494 transitions. [2023-12-21 02:57:11,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 494 transitions. [2023-12-21 02:57:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:11,174 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:11,174 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:11,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-12-21 02:57:11,174 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:11,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:11,174 INFO L85 PathProgramCache]: Analyzing trace with hash 1076294821, now seen corresponding path program 1 times [2023-12-21 02:57:11,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:11,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594139602] [2023-12-21 02:57:11,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:11,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:11,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:12,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:12,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594139602] [2023-12-21 02:57:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594139602] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2023-12-21 02:57:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436883049] [2023-12-21 02:57:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:12,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-12-21 02:57:12,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-12-21 02:57:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:57:12,426 INFO L87 Difference]: Start difference. First operand 384 states and 494 transitions. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:13,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:13,734 INFO L93 Difference]: Finished difference Result 788 states and 1024 transitions. [2023-12-21 02:57:13,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-12-21 02:57:13,734 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 156 [2023-12-21 02:57:13,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:13,736 INFO L225 Difference]: With dead ends: 788 [2023-12-21 02:57:13,736 INFO L226 Difference]: Without dead ends: 461 [2023-12-21 02:57:13,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=249, Invalid=681, Unknown=0, NotChecked=0, Total=930 [2023-12-21 02:57:13,737 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 523 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:13,737 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [524 Valid, 718 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:57:13,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-12-21 02:57:13,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 386. [2023-12-21 02:57:13,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 338 states have (on average 1.2337278106508875) internal successors, (417), 339 states have internal predecessors, (417), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:13,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 497 transitions. [2023-12-21 02:57:13,791 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 497 transitions. Word has length 156 [2023-12-21 02:57:13,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:13,791 INFO L495 AbstractCegarLoop]: Abstraction has 386 states and 497 transitions. [2023-12-21 02:57:13,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 17 states have internal predecessors, (59), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:13,791 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 497 transitions. [2023-12-21 02:57:13,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2023-12-21 02:57:13,792 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:13,792 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:13,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-12-21 02:57:13,792 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:13,793 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:13,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1407282217, now seen corresponding path program 1 times [2023-12-21 02:57:13,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:13,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172695826] [2023-12-21 02:57:13,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:13,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:13,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:13,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:13,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172695826] [2023-12-21 02:57:13,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172695826] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:13,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:13,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-21 02:57:13,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890772890] [2023-12-21 02:57:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-21 02:57:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-21 02:57:13,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:57:13,988 INFO L87 Difference]: Start difference. First operand 386 states and 497 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:14,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:14,185 INFO L93 Difference]: Finished difference Result 686 states and 889 transitions. [2023-12-21 02:57:14,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:57:14,186 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 156 [2023-12-21 02:57:14,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:14,187 INFO L225 Difference]: With dead ends: 686 [2023-12-21 02:57:14,187 INFO L226 Difference]: Without dead ends: 357 [2023-12-21 02:57:14,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-12-21 02:57:14,188 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 100 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:14,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 400 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:57:14,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2023-12-21 02:57:14,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 333. [2023-12-21 02:57:14,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 285 states have (on average 1.231578947368421) internal successors, (351), 286 states have internal predecessors, (351), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:14,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 431 transitions. [2023-12-21 02:57:14,247 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 431 transitions. Word has length 156 [2023-12-21 02:57:14,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:14,247 INFO L495 AbstractCegarLoop]: Abstraction has 333 states and 431 transitions. [2023-12-21 02:57:14,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:14,247 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 431 transitions. [2023-12-21 02:57:14,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 02:57:14,248 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:14,248 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:14,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-12-21 02:57:14,248 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:14,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 631097135, now seen corresponding path program 1 times [2023-12-21 02:57:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:14,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82330647] [2023-12-21 02:57:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:14,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:14,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:14,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:14,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:14,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:14,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:14,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:14,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:14,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:14,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:14,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:14,336 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:14,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:14,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82330647] [2023-12-21 02:57:14,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82330647] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:14,336 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:14,336 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-12-21 02:57:14,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374778657] [2023-12-21 02:57:14,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:14,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-21 02:57:14,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:14,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-21 02:57:14,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-12-21 02:57:14,337 INFO L87 Difference]: Start difference. First operand 333 states and 431 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:14,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:14,521 INFO L93 Difference]: Finished difference Result 834 states and 1079 transitions. [2023-12-21 02:57:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-21 02:57:14,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 02:57:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:14,523 INFO L225 Difference]: With dead ends: 834 [2023-12-21 02:57:14,523 INFO L226 Difference]: Without dead ends: 558 [2023-12-21 02:57:14,523 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:57:14,524 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 80 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:14,524 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 334 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-21 02:57:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2023-12-21 02:57:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 479. [2023-12-21 02:57:14,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 431 states have (on average 1.2668213457076567) internal successors, (546), 431 states have internal predecessors, (546), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:14,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 626 transitions. [2023-12-21 02:57:14,579 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 626 transitions. Word has length 157 [2023-12-21 02:57:14,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:14,580 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 626 transitions. [2023-12-21 02:57:14,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:14,580 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 626 transitions. [2023-12-21 02:57:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2023-12-21 02:57:14,580 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:14,581 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:14,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-12-21 02:57:14,581 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:14,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 44291121, now seen corresponding path program 1 times [2023-12-21 02:57:14,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:14,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659953236] [2023-12-21 02:57:14,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:14,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:14,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:15,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:15,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:15,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:15,862 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:15,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:15,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659953236] [2023-12-21 02:57:15,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659953236] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:15,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:15,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:57:15,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613640248] [2023-12-21 02:57:15,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:15,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:57:15,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:15,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:57:15,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:57:15,863 INFO L87 Difference]: Start difference. First operand 479 states and 626 transitions. Second operand has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:16,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:16,924 INFO L93 Difference]: Finished difference Result 1030 states and 1318 transitions. [2023-12-21 02:57:16,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:57:16,925 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 157 [2023-12-21 02:57:16,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:16,926 INFO L225 Difference]: With dead ends: 1030 [2023-12-21 02:57:16,926 INFO L226 Difference]: Without dead ends: 752 [2023-12-21 02:57:16,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 45 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:57:16,927 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 325 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:16,928 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 573 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 02:57:16,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 752 states. [2023-12-21 02:57:16,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 752 to 537. [2023-12-21 02:57:16,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 489 states have (on average 1.2719836400817996) internal successors, (622), 489 states have internal predecessors, (622), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:16,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 702 transitions. [2023-12-21 02:57:16,990 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 702 transitions. Word has length 157 [2023-12-21 02:57:16,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:16,990 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 702 transitions. [2023-12-21 02:57:16,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 9 states have internal predecessors, (60), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:16,990 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 702 transitions. [2023-12-21 02:57:16,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:16,991 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:16,991 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:16,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-12-21 02:57:16,991 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:16,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:16,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1143689716, now seen corresponding path program 1 times [2023-12-21 02:57:16,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:16,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250547682] [2023-12-21 02:57:16,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:16,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:18,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:18,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:18,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:18,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:18,343 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:18,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:18,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250547682] [2023-12-21 02:57:18,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250547682] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:18,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:18,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:57:18,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162383444] [2023-12-21 02:57:18,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:18,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:57:18,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:18,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:57:18,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:57:18,345 INFO L87 Difference]: Start difference. First operand 537 states and 702 transitions. Second operand has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:19,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:19,351 INFO L93 Difference]: Finished difference Result 976 states and 1278 transitions. [2023-12-21 02:57:19,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:57:19,352 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 02:57:19,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:19,354 INFO L225 Difference]: With dead ends: 976 [2023-12-21 02:57:19,354 INFO L226 Difference]: Without dead ends: 696 [2023-12-21 02:57:19,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:57:19,354 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 492 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:19,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 476 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:57:19,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-12-21 02:57:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 535. [2023-12-21 02:57:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 487 states have (on average 1.268993839835729) internal successors, (618), 487 states have internal predecessors, (618), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:19,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 698 transitions. [2023-12-21 02:57:19,421 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 698 transitions. Word has length 158 [2023-12-21 02:57:19,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:19,421 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 698 transitions. [2023-12-21 02:57:19,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.357142857142857) internal successors, (61), 14 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:19,421 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 698 transitions. [2023-12-21 02:57:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:19,422 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:19,422 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:19,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-12-21 02:57:19,422 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:19,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:19,423 INFO L85 PathProgramCache]: Analyzing trace with hash -2140160330, now seen corresponding path program 1 times [2023-12-21 02:57:19,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:19,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150951243] [2023-12-21 02:57:19,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:19,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:20,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:20,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:20,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:20,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:20,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:20,144 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:20,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:20,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150951243] [2023-12-21 02:57:20,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150951243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:20,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:20,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:20,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190095989] [2023-12-21 02:57:20,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:20,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:20,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:20,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:20,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:20,145 INFO L87 Difference]: Start difference. First operand 535 states and 698 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:20,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:20,858 INFO L93 Difference]: Finished difference Result 926 states and 1193 transitions. [2023-12-21 02:57:20,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:57:20,859 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 02:57:20,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:20,861 INFO L225 Difference]: With dead ends: 926 [2023-12-21 02:57:20,861 INFO L226 Difference]: Without dead ends: 649 [2023-12-21 02:57:20,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:57:20,863 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 564 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 564 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:20,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [564 Valid, 415 Invalid, 950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:57:20,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2023-12-21 02:57:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 538. [2023-12-21 02:57:20,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 490 states have (on average 1.2551020408163265) internal successors, (615), 490 states have internal predecessors, (615), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:20,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 695 transitions. [2023-12-21 02:57:20,924 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 695 transitions. Word has length 158 [2023-12-21 02:57:20,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:20,925 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 695 transitions. [2023-12-21 02:57:20,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:20,925 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 695 transitions. [2023-12-21 02:57:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:20,926 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:20,926 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:20,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-12-21 02:57:20,926 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:20,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:20,926 INFO L85 PathProgramCache]: Analyzing trace with hash -2063344520, now seen corresponding path program 1 times [2023-12-21 02:57:20,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:20,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238729935] [2023-12-21 02:57:20,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:20,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:20,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:21,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:21,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:21,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:21,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:21,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:21,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:22,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:22,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:22,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:57:22,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238729935] [2023-12-21 02:57:22,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238729935] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:57:22,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1433158528] [2023-12-21 02:57:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:22,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:57:22,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:57:22,011 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) [2023-12-21 02:57:22,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-21 02:57:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:22,214 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 02:57:22,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:57:22,263 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-12-21 02:57:23,021 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 64 treesize of output 43 [2023-12-21 02:57:23,024 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:23,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-12-21 02:57:23,031 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:23,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 02:57:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:23,346 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:57:23,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1433158528] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:23,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:57:23,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 24 [2023-12-21 02:57:23,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21173121] [2023-12-21 02:57:23,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:23,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:57:23,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:23,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:57:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=491, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:57:23,347 INFO L87 Difference]: Start difference. First operand 538 states and 695 transitions. Second operand has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:24,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:24,190 INFO L93 Difference]: Finished difference Result 1190 states and 1499 transitions. [2023-12-21 02:57:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-12-21 02:57:24,193 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:24,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:24,194 INFO L225 Difference]: With dead ends: 1190 [2023-12-21 02:57:24,195 INFO L226 Difference]: Without dead ends: 895 [2023-12-21 02:57:24,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=188, Invalid=1218, Unknown=0, NotChecked=0, Total=1406 [2023-12-21 02:57:24,196 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 399 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:24,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 744 Invalid, 893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:24,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2023-12-21 02:57:24,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 618. [2023-12-21 02:57:24,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 570 states have (on average 1.249122807017544) internal successors, (712), 570 states have internal predecessors, (712), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:24,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 792 transitions. [2023-12-21 02:57:24,258 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 792 transitions. Word has length 158 [2023-12-21 02:57:24,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:24,258 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 792 transitions. [2023-12-21 02:57:24,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.083333333333333) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:24,258 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 792 transitions. [2023-12-21 02:57:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:24,259 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:24,259 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:24,265 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-21 02:57:24,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:57:24,465 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:24,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:24,466 INFO L85 PathProgramCache]: Analyzing trace with hash -288337158, now seen corresponding path program 1 times [2023-12-21 02:57:24,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:24,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414583823] [2023-12-21 02:57:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:24,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:24,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:24,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:24,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:24,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:24,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:24,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:24,808 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:24,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:24,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414583823] [2023-12-21 02:57:24,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414583823] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:24,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:24,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:57:24,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834672253] [2023-12-21 02:57:24,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:24,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:57:24,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:24,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:57:24,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:57:24,809 INFO L87 Difference]: Start difference. First operand 618 states and 792 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:25,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:25,450 INFO L93 Difference]: Finished difference Result 1208 states and 1533 transitions. [2023-12-21 02:57:25,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:57:25,450 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:25,452 INFO L225 Difference]: With dead ends: 1208 [2023-12-21 02:57:25,452 INFO L226 Difference]: Without dead ends: 913 [2023-12-21 02:57:25,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2023-12-21 02:57:25,453 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 460 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 603 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:25,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 505 Invalid, 610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 603 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:25,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-12-21 02:57:25,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 666. [2023-12-21 02:57:25,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 618 states have (on average 1.2378640776699028) internal successors, (765), 618 states have internal predecessors, (765), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:25,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 845 transitions. [2023-12-21 02:57:25,521 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 845 transitions. Word has length 158 [2023-12-21 02:57:25,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:25,521 INFO L495 AbstractCegarLoop]: Abstraction has 666 states and 845 transitions. [2023-12-21 02:57:25,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:25,522 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 845 transitions. [2023-12-21 02:57:25,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:25,523 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:25,523 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:25,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-12-21 02:57:25,523 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:25,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:25,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1922795910, now seen corresponding path program 1 times [2023-12-21 02:57:25,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:25,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066803554] [2023-12-21 02:57:25,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:25,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:25,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:25,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:25,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:25,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:25,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:25,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:25,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:25,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:25,907 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:25,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:25,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066803554] [2023-12-21 02:57:25,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066803554] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:25,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:25,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:57:25,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239640975] [2023-12-21 02:57:25,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:25,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:57:25,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:25,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:57:25,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:57:25,909 INFO L87 Difference]: Start difference. First operand 666 states and 845 transitions. Second operand has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:26,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:26,636 INFO L93 Difference]: Finished difference Result 1280 states and 1616 transitions. [2023-12-21 02:57:26,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 02:57:26,637 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:26,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:26,639 INFO L225 Difference]: With dead ends: 1280 [2023-12-21 02:57:26,639 INFO L226 Difference]: Without dead ends: 937 [2023-12-21 02:57:26,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:57:26,640 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 352 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 817 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 817 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:26,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 646 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 817 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:57:26,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2023-12-21 02:57:26,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 690. [2023-12-21 02:57:26,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 642 states have (on average 1.2383177570093458) internal successors, (795), 642 states have internal predecessors, (795), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:26,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 875 transitions. [2023-12-21 02:57:26,703 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 875 transitions. Word has length 158 [2023-12-21 02:57:26,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:26,703 INFO L495 AbstractCegarLoop]: Abstraction has 690 states and 875 transitions. [2023-12-21 02:57:26,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.1) internal successors, (61), 10 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:26,703 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 875 transitions. [2023-12-21 02:57:26,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:26,704 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:26,704 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:26,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-12-21 02:57:26,705 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:26,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:26,705 INFO L85 PathProgramCache]: Analyzing trace with hash -147788548, now seen corresponding path program 1 times [2023-12-21 02:57:26,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:26,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025946599] [2023-12-21 02:57:26,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:26,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:27,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:27,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:27,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:27,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:27,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:27,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:27,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:27,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,523 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:57:27,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025946599] [2023-12-21 02:57:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025946599] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:57:27,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258360232] [2023-12-21 02:57:27,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:27,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:57:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:57:27,524 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:57:27,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-12-21 02:57:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:27,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 25 conjunts are in the unsatisfiable core [2023-12-21 02:57:27,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:57:28,230 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 72 treesize of output 51 [2023-12-21 02:57:28,233 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:28,233 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 26 [2023-12-21 02:57:28,239 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:28,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-12-21 02:57:28,547 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:57:28,547 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 91 treesize of output 79 [2023-12-21 02:57:28,661 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:28,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:57:28,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [258360232] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:28,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:57:28,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2023-12-21 02:57:28,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506912748] [2023-12-21 02:57:28,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:28,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:57:28,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:28,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:57:28,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:57:28,664 INFO L87 Difference]: Start difference. First operand 690 states and 875 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:29,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:29,521 INFO L93 Difference]: Finished difference Result 1214 states and 1530 transitions. [2023-12-21 02:57:29,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:57:29,521 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:29,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:29,523 INFO L225 Difference]: With dead ends: 1214 [2023-12-21 02:57:29,523 INFO L226 Difference]: Without dead ends: 851 [2023-12-21 02:57:29,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=698, Unknown=0, NotChecked=0, Total=812 [2023-12-21 02:57:29,525 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 159 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:29,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 775 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 574 Invalid, 1 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:57:29,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2023-12-21 02:57:29,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 798. [2023-12-21 02:57:29,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 750 states have (on average 1.2386666666666666) internal successors, (929), 750 states have internal predecessors, (929), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:29,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1009 transitions. [2023-12-21 02:57:29,591 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1009 transitions. Word has length 158 [2023-12-21 02:57:29,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:29,591 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1009 transitions. [2023-12-21 02:57:29,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1009 transitions. [2023-12-21 02:57:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:29,592 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:29,592 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:29,600 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-12-21 02:57:29,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2023-12-21 02:57:29,798 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:29,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:29,799 INFO L85 PathProgramCache]: Analyzing trace with hash -1559475186, now seen corresponding path program 1 times [2023-12-21 02:57:29,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:29,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892900066] [2023-12-21 02:57:29,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:29,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:30,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:30,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:30,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:30,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:30,677 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:30,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:30,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892900066] [2023-12-21 02:57:30,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892900066] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:30,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:30,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409880335] [2023-12-21 02:57:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:30,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:30,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:30,680 INFO L87 Difference]: Start difference. First operand 798 states and 1009 transitions. Second operand has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:31,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:31,509 INFO L93 Difference]: Finished difference Result 1316 states and 1645 transitions. [2023-12-21 02:57:31,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:57:31,510 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 02:57:31,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:31,512 INFO L225 Difference]: With dead ends: 1316 [2023-12-21 02:57:31,512 INFO L226 Difference]: Without dead ends: 884 [2023-12-21 02:57:31,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2023-12-21 02:57:31,513 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 463 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:31,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 593 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 605 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:31,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2023-12-21 02:57:31,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 780. [2023-12-21 02:57:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 780 states, 732 states have (on average 1.2377049180327868) internal successors, (906), 732 states have internal predecessors, (906), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:31,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 986 transitions. [2023-12-21 02:57:31,578 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 986 transitions. Word has length 158 [2023-12-21 02:57:31,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:31,578 INFO L495 AbstractCegarLoop]: Abstraction has 780 states and 986 transitions. [2023-12-21 02:57:31,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.6923076923076925) internal successors, (61), 13 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 986 transitions. [2023-12-21 02:57:31,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:31,579 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:31,579 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:31,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-12-21 02:57:31,580 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:31,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash 749322930, now seen corresponding path program 1 times [2023-12-21 02:57:31,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317554363] [2023-12-21 02:57:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:32,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:32,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:32,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:32,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:32,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:32,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:32,291 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:32,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:32,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317554363] [2023-12-21 02:57:32,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317554363] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:32,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:32,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 02:57:32,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100214368] [2023-12-21 02:57:32,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:32,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 02:57:32,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:32,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 02:57:32,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-12-21 02:57:32,292 INFO L87 Difference]: Start difference. First operand 780 states and 986 transitions. Second operand has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:32,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:32,827 INFO L93 Difference]: Finished difference Result 1374 states and 1721 transitions. [2023-12-21 02:57:32,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:57:32,828 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:32,830 INFO L225 Difference]: With dead ends: 1374 [2023-12-21 02:57:32,830 INFO L226 Difference]: Without dead ends: 958 [2023-12-21 02:57:32,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 43 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:57:32,831 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 456 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:32,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [456 Valid, 490 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:32,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 958 states. [2023-12-21 02:57:32,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 958 to 818. [2023-12-21 02:57:32,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 770 states have (on average 1.2337662337662338) internal successors, (950), 770 states have internal predecessors, (950), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:32,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1030 transitions. [2023-12-21 02:57:32,905 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1030 transitions. Word has length 158 [2023-12-21 02:57:32,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:32,906 INFO L495 AbstractCegarLoop]: Abstraction has 818 states and 1030 transitions. [2023-12-21 02:57:32,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.545454545454546) internal successors, (61), 11 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:32,906 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1030 transitions. [2023-12-21 02:57:32,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:32,907 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:32,907 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:32,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-12-21 02:57:32,907 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:32,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:32,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1760440180, now seen corresponding path program 1 times [2023-12-21 02:57:32,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:32,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207921313] [2023-12-21 02:57:32,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:32,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:35,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:35,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:35,221 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:35,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:35,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207921313] [2023-12-21 02:57:35,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207921313] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:35,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:35,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2023-12-21 02:57:35,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421024682] [2023-12-21 02:57:35,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:35,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-12-21 02:57:35,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:35,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-12-21 02:57:35,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:57:35,222 INFO L87 Difference]: Start difference. First operand 818 states and 1030 transitions. Second operand has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:36,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:36,254 INFO L93 Difference]: Finished difference Result 1362 states and 1710 transitions. [2023-12-21 02:57:36,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 02:57:36,255 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 158 [2023-12-21 02:57:36,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:36,257 INFO L225 Difference]: With dead ends: 1362 [2023-12-21 02:57:36,257 INFO L226 Difference]: Without dead ends: 926 [2023-12-21 02:57:36,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2023-12-21 02:57:36,259 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 390 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:36,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 650 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:57:36,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 926 states. [2023-12-21 02:57:36,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 926 to 778. [2023-12-21 02:57:36,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 778 states, 730 states have (on average 1.2246575342465753) internal successors, (894), 730 states have internal predecessors, (894), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:36,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 778 states to 778 states and 974 transitions. [2023-12-21 02:57:36,346 INFO L78 Accepts]: Start accepts. Automaton has 778 states and 974 transitions. Word has length 158 [2023-12-21 02:57:36,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:36,347 INFO L495 AbstractCegarLoop]: Abstraction has 778 states and 974 transitions. [2023-12-21 02:57:36,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.066666666666666) internal successors, (61), 16 states have internal predecessors, (61), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states and 974 transitions. [2023-12-21 02:57:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:36,348 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:36,348 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:36,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-12-21 02:57:36,348 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:36,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:36,349 INFO L85 PathProgramCache]: Analyzing trace with hash -156888716, now seen corresponding path program 1 times [2023-12-21 02:57:36,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:36,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643879724] [2023-12-21 02:57:36,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:36,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:37,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:37,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:37,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:37,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:37,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:37,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:37,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 45 proven. 12 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:57:37,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643879724] [2023-12-21 02:57:37,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643879724] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:57:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669970829] [2023-12-21 02:57:37,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:37,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:57:37,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:57:37,698 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:57:37,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-12-21 02:57:37,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:37,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 27 conjunts are in the unsatisfiable core [2023-12-21 02:57:37,905 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:57:38,440 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 64 treesize of output 43 [2023-12-21 02:57:38,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:38,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-12-21 02:57:38,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:57:38,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 02:57:38,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:57:38,734 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 81 treesize of output 69 [2023-12-21 02:57:38,821 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:38,822 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:57:38,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669970829] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:38,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:57:38,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 21 [2023-12-21 02:57:38,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682238166] [2023-12-21 02:57:38,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:38,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:57:38,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:38,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:57:38,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2023-12-21 02:57:38,823 INFO L87 Difference]: Start difference. First operand 778 states and 974 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:39,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:39,535 INFO L93 Difference]: Finished difference Result 1266 states and 1576 transitions. [2023-12-21 02:57:39,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:57:39,535 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 158 [2023-12-21 02:57:39,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:39,537 INFO L225 Difference]: With dead ends: 1266 [2023-12-21 02:57:39,537 INFO L226 Difference]: Without dead ends: 833 [2023-12-21 02:57:39,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 194 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2023-12-21 02:57:39,538 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 164 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:39,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 563 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 491 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:39,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-12-21 02:57:39,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 734. [2023-12-21 02:57:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 686 states have (on average 1.228862973760933) internal successors, (843), 686 states have internal predecessors, (843), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:39,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 923 transitions. [2023-12-21 02:57:39,604 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 923 transitions. Word has length 158 [2023-12-21 02:57:39,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:39,604 INFO L495 AbstractCegarLoop]: Abstraction has 734 states and 923 transitions. [2023-12-21 02:57:39,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 923 transitions. [2023-12-21 02:57:39,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:39,605 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:39,605 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:39,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-12-21 02:57:39,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:57:39,810 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:39,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1618118646, now seen corresponding path program 1 times [2023-12-21 02:57:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:39,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158388485] [2023-12-21 02:57:39,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:39,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:40,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:40,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:40,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:40,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:40,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:40,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:40,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:40,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:40,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:40,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:40,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:40,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,127 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:40,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:40,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158388485] [2023-12-21 02:57:40,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158388485] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:40,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:40,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:57:40,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101156892] [2023-12-21 02:57:40,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:40,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:57:40,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:40,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:57:40,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:57:40,128 INFO L87 Difference]: Start difference. First operand 734 states and 923 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:40,541 INFO L93 Difference]: Finished difference Result 1219 states and 1521 transitions. [2023-12-21 02:57:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:57:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 02:57:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:40,544 INFO L225 Difference]: With dead ends: 1219 [2023-12-21 02:57:40,544 INFO L226 Difference]: Without dead ends: 785 [2023-12-21 02:57:40,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:57:40,545 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 368 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:40,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 325 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:40,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2023-12-21 02:57:40,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 710. [2023-12-21 02:57:40,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 662 states have (on average 1.2265861027190332) internal successors, (812), 662 states have internal predecessors, (812), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:40,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 892 transitions. [2023-12-21 02:57:40,610 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 892 transitions. Word has length 158 [2023-12-21 02:57:40,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:40,610 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 892 transitions. [2023-12-21 02:57:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:40,611 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 892 transitions. [2023-12-21 02:57:40,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2023-12-21 02:57:40,611 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:40,612 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:40,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-12-21 02:57:40,612 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:40,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:40,612 INFO L85 PathProgramCache]: Analyzing trace with hash -16340106, now seen corresponding path program 1 times [2023-12-21 02:57:40,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:40,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539489985] [2023-12-21 02:57:40,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:40,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:40,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:40,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:40,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:40,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:40,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:40,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:40,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:40,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:40,915 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:40,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:40,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539489985] [2023-12-21 02:57:40,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539489985] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:40,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:40,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-12-21 02:57:40,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425089854] [2023-12-21 02:57:40,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:40,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-12-21 02:57:40,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:40,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-12-21 02:57:40,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-12-21 02:57:40,916 INFO L87 Difference]: Start difference. First operand 710 states and 892 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:41,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:41,460 INFO L93 Difference]: Finished difference Result 1175 states and 1467 transitions. [2023-12-21 02:57:41,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:57:41,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 158 [2023-12-21 02:57:41,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:41,463 INFO L225 Difference]: With dead ends: 1175 [2023-12-21 02:57:41,463 INFO L226 Difference]: Without dead ends: 761 [2023-12-21 02:57:41,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2023-12-21 02:57:41,475 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 208 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:41,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 449 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:41,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-12-21 02:57:41,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 686. [2023-12-21 02:57:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 686 states, 638 states have (on average 1.2241379310344827) internal successors, (781), 638 states have internal predecessors, (781), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 686 states to 686 states and 861 transitions. [2023-12-21 02:57:41,544 INFO L78 Accepts]: Start accepts. Automaton has 686 states and 861 transitions. Word has length 158 [2023-12-21 02:57:41,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:41,545 INFO L495 AbstractCegarLoop]: Abstraction has 686 states and 861 transitions. [2023-12-21 02:57:41,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:41,546 INFO L276 IsEmpty]: Start isEmpty. Operand 686 states and 861 transitions. [2023-12-21 02:57:41,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2023-12-21 02:57:41,565 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:41,565 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:41,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-12-21 02:57:41,565 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:41,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:41,567 INFO L85 PathProgramCache]: Analyzing trace with hash -136389182, now seen corresponding path program 1 times [2023-12-21 02:57:41,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:41,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160389199] [2023-12-21 02:57:41,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:41,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:42,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:42,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:42,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:42,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:42,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:42,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160389199] [2023-12-21 02:57:42,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160389199] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:42,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:42,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:42,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460642365] [2023-12-21 02:57:42,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:42,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:42,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:42,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:42,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:42,850 INFO L87 Difference]: Start difference. First operand 686 states and 861 transitions. Second operand has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:43,798 INFO L93 Difference]: Finished difference Result 1192 states and 1480 transitions. [2023-12-21 02:57:43,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-12-21 02:57:43,798 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 159 [2023-12-21 02:57:43,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:43,800 INFO L225 Difference]: With dead ends: 1192 [2023-12-21 02:57:43,801 INFO L226 Difference]: Without dead ends: 798 [2023-12-21 02:57:43,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=340, Unknown=0, NotChecked=0, Total=506 [2023-12-21 02:57:43,802 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 398 mSDsluCounter, 377 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:43,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [398 Valid, 473 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:43,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2023-12-21 02:57:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 687. [2023-12-21 02:57:43,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 639 states have (on average 1.2237871674491392) internal successors, (782), 639 states have internal predecessors, (782), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:43,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 862 transitions. [2023-12-21 02:57:43,873 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 862 transitions. Word has length 159 [2023-12-21 02:57:43,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:43,873 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 862 transitions. [2023-12-21 02:57:43,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.769230769230769) internal successors, (62), 13 states have internal predecessors, (62), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:57:43,873 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 862 transitions. [2023-12-21 02:57:43,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:43,874 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:43,874 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:43,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-12-21 02:57:43,875 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:43,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:43,875 INFO L85 PathProgramCache]: Analyzing trace with hash -1084558579, now seen corresponding path program 1 times [2023-12-21 02:57:43,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:43,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311545480] [2023-12-21 02:57:43,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:44,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:44,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:44,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:44,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:44,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:44,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:44,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:44,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:44,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:44,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311545480] [2023-12-21 02:57:44,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311545480] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:44,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:44,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:44,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002461562] [2023-12-21 02:57:44,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:44,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:44,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:44,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:44,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:44,446 INFO L87 Difference]: Start difference. First operand 687 states and 862 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:44,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:44,930 INFO L93 Difference]: Finished difference Result 1235 states and 1537 transitions. [2023-12-21 02:57:44,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:57:44,930 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:57:44,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:44,932 INFO L225 Difference]: With dead ends: 1235 [2023-12-21 02:57:44,932 INFO L226 Difference]: Without dead ends: 840 [2023-12-21 02:57:44,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:57:44,933 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 308 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:44,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 852 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:44,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2023-12-21 02:57:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 811. [2023-12-21 02:57:45,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 763 states have (on average 1.2136304062909566) internal successors, (926), 763 states have internal predecessors, (926), 40 states have call successors, (40), 7 states have call predecessors, (40), 7 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:45,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1006 transitions. [2023-12-21 02:57:45,001 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1006 transitions. Word has length 160 [2023-12-21 02:57:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:45,001 INFO L495 AbstractCegarLoop]: Abstraction has 811 states and 1006 transitions. [2023-12-21 02:57:45,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1006 transitions. [2023-12-21 02:57:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:45,002 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:45,002 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:45,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-12-21 02:57:45,002 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:45,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1477585589, now seen corresponding path program 1 times [2023-12-21 02:57:45,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:45,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116151583] [2023-12-21 02:57:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:45,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:46,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:46,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:46,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:46,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:46,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:46,198 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:46,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:46,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116151583] [2023-12-21 02:57:46,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116151583] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:46,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:46,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:46,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274866781] [2023-12-21 02:57:46,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:46,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:46,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:46,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:46,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:46,200 INFO L87 Difference]: Start difference. First operand 811 states and 1006 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:47,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:47,044 INFO L93 Difference]: Finished difference Result 1370 states and 1699 transitions. [2023-12-21 02:57:47,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-12-21 02:57:47,045 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2023-12-21 02:57:47,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:47,047 INFO L225 Difference]: With dead ends: 1370 [2023-12-21 02:57:47,047 INFO L226 Difference]: Without dead ends: 888 [2023-12-21 02:57:47,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:57:47,047 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 449 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 772 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 772 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:47,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 456 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 772 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:57:47,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 888 states. [2023-12-21 02:57:47,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 888 to 815. [2023-12-21 02:57:47,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 815 states, 766 states have (on average 1.2114882506527416) internal successors, (928), 766 states have internal predecessors, (928), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:47,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 815 states to 815 states and 1008 transitions. [2023-12-21 02:57:47,147 INFO L78 Accepts]: Start accepts. Automaton has 815 states and 1008 transitions. Word has length 160 [2023-12-21 02:57:47,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:47,147 INFO L495 AbstractCegarLoop]: Abstraction has 815 states and 1008 transitions. [2023-12-21 02:57:47,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:47,148 INFO L276 IsEmpty]: Start isEmpty. Operand 815 states and 1008 transitions. [2023-12-21 02:57:47,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:47,148 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:47,149 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:47,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-12-21 02:57:47,149 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:47,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:47,149 INFO L85 PathProgramCache]: Analyzing trace with hash -933094154, now seen corresponding path program 1 times [2023-12-21 02:57:47,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:47,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919656023] [2023-12-21 02:57:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:47,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:47,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:47,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:47,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:47,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:47,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:47,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:47,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:47,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:47,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:47,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:47,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:47,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:47,660 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:47,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:47,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919656023] [2023-12-21 02:57:47,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919656023] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:47,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:47,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:57:47,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325440963] [2023-12-21 02:57:47,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:47,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:57:47,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:47,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:57:47,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:57:47,662 INFO L87 Difference]: Start difference. First operand 815 states and 1008 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:48,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:48,081 INFO L93 Difference]: Finished difference Result 1445 states and 1776 transitions. [2023-12-21 02:57:48,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:57:48,081 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:57:48,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:48,083 INFO L225 Difference]: With dead ends: 1445 [2023-12-21 02:57:48,083 INFO L226 Difference]: Without dead ends: 963 [2023-12-21 02:57:48,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:57:48,085 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 204 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:48,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 351 Invalid, 418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:57:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2023-12-21 02:57:48,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 910. [2023-12-21 02:57:48,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 910 states, 861 states have (on average 1.2009291521486642) internal successors, (1034), 861 states have internal predecessors, (1034), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:48,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1114 transitions. [2023-12-21 02:57:48,163 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1114 transitions. Word has length 160 [2023-12-21 02:57:48,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:48,163 INFO L495 AbstractCegarLoop]: Abstraction has 910 states and 1114 transitions. [2023-12-21 02:57:48,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:48,163 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1114 transitions. [2023-12-21 02:57:48,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:48,164 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:48,164 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:48,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-12-21 02:57:48,165 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:48,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:48,165 INFO L85 PathProgramCache]: Analyzing trace with hash 873276134, now seen corresponding path program 1 times [2023-12-21 02:57:48,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:48,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983221540] [2023-12-21 02:57:48,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:48,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:48,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:48,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:48,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:48,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:48,283 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:48,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:48,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983221540] [2023-12-21 02:57:48,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983221540] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:48,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:48,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-21 02:57:48,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461431215] [2023-12-21 02:57:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:48,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-21 02:57:48,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-21 02:57:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-21 02:57:48,284 INFO L87 Difference]: Start difference. First operand 910 states and 1114 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:48,376 INFO L93 Difference]: Finished difference Result 915 states and 1119 transitions. [2023-12-21 02:57:48,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-21 02:57:48,376 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:57:48,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:48,378 INFO L225 Difference]: With dead ends: 915 [2023-12-21 02:57:48,378 INFO L226 Difference]: Without dead ends: 913 [2023-12-21 02:57:48,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-12-21 02:57:48,379 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 7 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:48,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 550 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-21 02:57:48,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 913 states. [2023-12-21 02:57:48,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 913 to 913. [2023-12-21 02:57:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 864 states have (on average 1.2002314814814814) internal successors, (1037), 864 states have internal predecessors, (1037), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1117 transitions. [2023-12-21 02:57:48,457 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1117 transitions. Word has length 160 [2023-12-21 02:57:48,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:48,457 INFO L495 AbstractCegarLoop]: Abstraction has 913 states and 1117 transitions. [2023-12-21 02:57:48,457 INFO L496 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, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:48,457 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1117 transitions. [2023-12-21 02:57:48,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:48,458 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:48,458 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:48,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-12-21 02:57:48,458 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:48,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:48,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1061926325, now seen corresponding path program 1 times [2023-12-21 02:57:48,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:48,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468144138] [2023-12-21 02:57:48,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:48,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:49,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:49,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:49,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:49,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:49,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:49,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:49,855 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:49,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:49,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468144138] [2023-12-21 02:57:49,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468144138] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:49,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:49,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:57:49,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337963641] [2023-12-21 02:57:49,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:49,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:57:49,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:49,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:57:49,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:57:49,857 INFO L87 Difference]: Start difference. First operand 913 states and 1117 transitions. Second operand has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:50,481 INFO L93 Difference]: Finished difference Result 1529 states and 1865 transitions. [2023-12-21 02:57:50,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:57:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2023-12-21 02:57:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:50,484 INFO L225 Difference]: With dead ends: 1529 [2023-12-21 02:57:50,484 INFO L226 Difference]: Without dead ends: 978 [2023-12-21 02:57:50,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 46 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-12-21 02:57:50,485 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 584 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:50,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 383 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:50,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2023-12-21 02:57:50,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 914. [2023-12-21 02:57:50,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 865 states have (on average 1.2) internal successors, (1038), 865 states have internal predecessors, (1038), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:50,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1118 transitions. [2023-12-21 02:57:50,590 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1118 transitions. Word has length 160 [2023-12-21 02:57:50,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:50,590 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1118 transitions. [2023-12-21 02:57:50,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.25) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:57:50,590 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1118 transitions. [2023-12-21 02:57:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:50,591 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:50,591 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:50,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-12-21 02:57:50,592 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:50,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:50,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1454953335, now seen corresponding path program 1 times [2023-12-21 02:57:50,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:50,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934396841] [2023-12-21 02:57:50,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:50,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:52,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:52,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:52,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:52,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934396841] [2023-12-21 02:57:52,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934396841] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:52,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:52,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2023-12-21 02:57:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588263344] [2023-12-21 02:57:52,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:52,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-12-21 02:57:52,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:52,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-12-21 02:57:52,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2023-12-21 02:57:52,478 INFO L87 Difference]: Start difference. First operand 914 states and 1118 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-21 02:57:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:54,428 INFO L93 Difference]: Finished difference Result 1552 states and 1898 transitions. [2023-12-21 02:57:54,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-12-21 02:57:54,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 160 [2023-12-21 02:57:54,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:54,449 INFO L225 Difference]: With dead ends: 1552 [2023-12-21 02:57:54,449 INFO L226 Difference]: Without dead ends: 1000 [2023-12-21 02:57:54,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2023-12-21 02:57:54,451 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 719 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:54,451 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 768 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-12-21 02:57:54,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1000 states. [2023-12-21 02:57:54,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1000 to 914. [2023-12-21 02:57:54,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 914 states, 865 states have (on average 1.2) internal successors, (1038), 865 states have internal predecessors, (1038), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:54,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 914 states to 914 states and 1118 transitions. [2023-12-21 02:57:54,537 INFO L78 Accepts]: Start accepts. Automaton has 914 states and 1118 transitions. Word has length 160 [2023-12-21 02:57:54,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:54,537 INFO L495 AbstractCegarLoop]: Abstraction has 914 states and 1118 transitions. [2023-12-21 02:57:54,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 20 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-21 02:57:54,537 INFO L276 IsEmpty]: Start isEmpty. Operand 914 states and 1118 transitions. [2023-12-21 02:57:54,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:54,538 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:54,538 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:54,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-12-21 02:57:54,538 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:54,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash -154901068, now seen corresponding path program 1 times [2023-12-21 02:57:54,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:54,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526468637] [2023-12-21 02:57:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:54,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:54,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:56,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:56,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:56,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:56,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:56,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:56,297 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:56,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:56,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526468637] [2023-12-21 02:57:56,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526468637] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:56,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:56,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 02:57:56,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417167298] [2023-12-21 02:57:56,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:56,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 02:57:56,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:56,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 02:57:56,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-12-21 02:57:56,299 INFO L87 Difference]: Start difference. First operand 914 states and 1118 transitions. Second operand has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-21 02:57:56,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:56,887 INFO L93 Difference]: Finished difference Result 1507 states and 1836 transitions. [2023-12-21 02:57:56,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-12-21 02:57:56,887 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 160 [2023-12-21 02:57:56,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:56,890 INFO L225 Difference]: With dead ends: 1507 [2023-12-21 02:57:56,890 INFO L226 Difference]: Without dead ends: 955 [2023-12-21 02:57:56,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 50 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2023-12-21 02:57:56,891 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 570 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:56,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 386 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:57:56,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 955 states. [2023-12-21 02:57:56,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 955 to 912. [2023-12-21 02:57:56,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 863 states have (on average 1.198146002317497) internal successors, (1034), 863 states have internal predecessors, (1034), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:56,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1114 transitions. [2023-12-21 02:57:56,970 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1114 transitions. Word has length 160 [2023-12-21 02:57:56,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:56,971 INFO L495 AbstractCegarLoop]: Abstraction has 912 states and 1114 transitions. [2023-12-21 02:57:56,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.846153846153846) internal successors, (63), 14 states have internal predecessors, (63), 5 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2023-12-21 02:57:56,971 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1114 transitions. [2023-12-21 02:57:56,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:56,972 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:56,972 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:56,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-12-21 02:57:56,972 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:56,972 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:56,972 INFO L85 PathProgramCache]: Analyzing trace with hash -3436643, now seen corresponding path program 1 times [2023-12-21 02:57:56,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:56,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039188049] [2023-12-21 02:57:56,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:56,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:56,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:57,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:57,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:57,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:57,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:57,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:57,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:57,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:57,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:57,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:57,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039188049] [2023-12-21 02:57:57,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039188049] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:57,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:57,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:57:57,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250963560] [2023-12-21 02:57:57,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:57,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:57:57,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:57,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:57:57,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:57:57,449 INFO L87 Difference]: Start difference. First operand 912 states and 1114 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:57,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:57:57,786 INFO L93 Difference]: Finished difference Result 1590 states and 1924 transitions. [2023-12-21 02:57:57,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:57:57,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:57:57,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:57:57,788 INFO L225 Difference]: With dead ends: 1590 [2023-12-21 02:57:57,788 INFO L226 Difference]: Without dead ends: 1040 [2023-12-21 02:57:57,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:57:57,789 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 245 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:57:57,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 370 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:57:57,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1040 states. [2023-12-21 02:57:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1040 to 1008. [2023-12-21 02:57:57,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 959 states have (on average 1.1908237747653807) internal successors, (1142), 959 states have internal predecessors, (1142), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:57:57,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1222 transitions. [2023-12-21 02:57:57,871 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1222 transitions. Word has length 160 [2023-12-21 02:57:57,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:57:57,871 INFO L495 AbstractCegarLoop]: Abstraction has 1008 states and 1222 transitions. [2023-12-21 02:57:57,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:57:57,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1222 transitions. [2023-12-21 02:57:57,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:57:57,872 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:57:57,873 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:57:57,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-12-21 02:57:57,873 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:57:57,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:57:57,873 INFO L85 PathProgramCache]: Analyzing trace with hash -396463653, now seen corresponding path program 1 times [2023-12-21 02:57:57,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:57:57,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953614137] [2023-12-21 02:57:57,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:57:57,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:57:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:57:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:57:59,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:57:59,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:57:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:57:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:57:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:57:59,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:57:59,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:57:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:57:59,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:57:59,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:57:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:57:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:57:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:57:59,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:57:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:57:59,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:57:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:57:59,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:57:59,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:57:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:57:59,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:57:59,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953614137] [2023-12-21 02:57:59,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953614137] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:57:59,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:57:59,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 02:57:59,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783062575] [2023-12-21 02:57:59,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:57:59,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 02:57:59,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:57:59,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 02:57:59,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:57:59,738 INFO L87 Difference]: Start difference. First operand 1008 states and 1222 transitions. Second operand has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:58:01,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:01,828 INFO L93 Difference]: Finished difference Result 1711 states and 2073 transitions. [2023-12-21 02:58:01,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-12-21 02:58:01,828 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) Word has length 160 [2023-12-21 02:58:01,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:01,830 INFO L225 Difference]: With dead ends: 1711 [2023-12-21 02:58:01,830 INFO L226 Difference]: Without dead ends: 1094 [2023-12-21 02:58:01,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 45 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=299, Invalid=823, Unknown=0, NotChecked=0, Total=1122 [2023-12-21 02:58:01,831 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 395 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:01,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1185 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-12-21 02:58:01,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2023-12-21 02:58:01,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1009. [2023-12-21 02:58:01,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 960 states have (on average 1.190625) internal successors, (1143), 960 states have internal predecessors, (1143), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:01,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1223 transitions. [2023-12-21 02:58:01,940 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1223 transitions. Word has length 160 [2023-12-21 02:58:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:01,940 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1223 transitions. [2023-12-21 02:58:01,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.5) internal successors, (63), 19 states have internal predecessors, (63), 4 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 4 states have call successors, (20) [2023-12-21 02:58:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1223 transitions. [2023-12-21 02:58:01,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:58:01,941 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:01,941 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:01,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-12-21 02:58:01,941 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:01,941 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:01,941 INFO L85 PathProgramCache]: Analyzing trace with hash -26068897, now seen corresponding path program 1 times [2023-12-21 02:58:01,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:01,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626661312] [2023-12-21 02:58:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:01,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:02,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:02,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:02,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:02,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:02,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:02,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:02,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:02,466 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:02,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:02,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626661312] [2023-12-21 02:58:02,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626661312] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:02,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:02,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:58:02,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893773305] [2023-12-21 02:58:02,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:02,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:58:02,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:02,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:58:02,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:58:02,467 INFO L87 Difference]: Start difference. First operand 1009 states and 1223 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:02,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:02,953 INFO L93 Difference]: Finished difference Result 1661 states and 2007 transitions. [2023-12-21 02:58:02,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:58:02,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:58:02,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:02,955 INFO L225 Difference]: With dead ends: 1661 [2023-12-21 02:58:02,955 INFO L226 Difference]: Without dead ends: 1043 [2023-12-21 02:58:02,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2023-12-21 02:58:02,956 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 337 mSDsluCounter, 764 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:02,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 919 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:58:02,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2023-12-21 02:58:03,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 1009. [2023-12-21 02:58:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1009 states, 960 states have (on average 1.190625) internal successors, (1143), 960 states have internal predecessors, (1143), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:03,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1009 states to 1009 states and 1223 transitions. [2023-12-21 02:58:03,046 INFO L78 Accepts]: Start accepts. Automaton has 1009 states and 1223 transitions. Word has length 160 [2023-12-21 02:58:03,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:03,046 INFO L495 AbstractCegarLoop]: Abstraction has 1009 states and 1223 transitions. [2023-12-21 02:58:03,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:03,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1009 states and 1223 transitions. [2023-12-21 02:58:03,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-12-21 02:58:03,047 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:03,048 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:03,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-12-21 02:58:03,048 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:03,048 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:03,048 INFO L85 PathProgramCache]: Analyzing trace with hash -419095907, now seen corresponding path program 1 times [2023-12-21 02:58:03,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:03,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120381040] [2023-12-21 02:58:03,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:03,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:03,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:03,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:03,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:03,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:03,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:03,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:03,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:03,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:03,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:03,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:03,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:03,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:03,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:03,550 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:03,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:03,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120381040] [2023-12-21 02:58:03,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120381040] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:03,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:03,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-12-21 02:58:03,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134764995] [2023-12-21 02:58:03,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:03,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-12-21 02:58:03,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:03,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-12-21 02:58:03,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-12-21 02:58:03,551 INFO L87 Difference]: Start difference. First operand 1009 states and 1223 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:03,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:03,982 INFO L93 Difference]: Finished difference Result 1659 states and 2004 transitions. [2023-12-21 02:58:03,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-21 02:58:03,982 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 160 [2023-12-21 02:58:03,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:03,984 INFO L225 Difference]: With dead ends: 1659 [2023-12-21 02:58:03,984 INFO L226 Difference]: Without dead ends: 1041 [2023-12-21 02:58:03,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:58:03,985 INFO L413 NwaCegarLoop]: 158 mSDtfsCounter, 167 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:03,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 412 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:58:03,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2023-12-21 02:58:04,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 1007. [2023-12-21 02:58:04,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1007 states, 958 states have (on average 1.1899791231732777) internal successors, (1140), 958 states have internal predecessors, (1140), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1007 states to 1007 states and 1220 transitions. [2023-12-21 02:58:04,071 INFO L78 Accepts]: Start accepts. Automaton has 1007 states and 1220 transitions. Word has length 160 [2023-12-21 02:58:04,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:04,071 INFO L495 AbstractCegarLoop]: Abstraction has 1007 states and 1220 transitions. [2023-12-21 02:58:04,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 8 states have internal predecessors, (63), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:04,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1007 states and 1220 transitions. [2023-12-21 02:58:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2023-12-21 02:58:04,072 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:04,072 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:04,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-12-21 02:58:04,073 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:04,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:04,073 INFO L85 PathProgramCache]: Analyzing trace with hash 2067935401, now seen corresponding path program 1 times [2023-12-21 02:58:04,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:04,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697639009] [2023-12-21 02:58:04,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:04,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:05,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:05,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:05,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:05,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:05,743 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:05,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:05,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697639009] [2023-12-21 02:58:05,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697639009] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:05,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:05,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-12-21 02:58:05,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203835883] [2023-12-21 02:58:05,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:05,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:58:05,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:05,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:58:05,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-12-21 02:58:05,744 INFO L87 Difference]: Start difference. First operand 1007 states and 1220 transitions. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:07,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:07,064 INFO L93 Difference]: Finished difference Result 2390 states and 2801 transitions. [2023-12-21 02:58:07,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-12-21 02:58:07,064 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 161 [2023-12-21 02:58:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:07,067 INFO L225 Difference]: With dead ends: 2390 [2023-12-21 02:58:07,067 INFO L226 Difference]: Without dead ends: 1770 [2023-12-21 02:58:07,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2023-12-21 02:58:07,068 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 418 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:07,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 571 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 02:58:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2023-12-21 02:58:07,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1139. [2023-12-21 02:58:07,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1139 states, 1090 states have (on average 1.181651376146789) internal successors, (1288), 1090 states have internal predecessors, (1288), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:07,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1139 states to 1139 states and 1368 transitions. [2023-12-21 02:58:07,161 INFO L78 Accepts]: Start accepts. Automaton has 1139 states and 1368 transitions. Word has length 161 [2023-12-21 02:58:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:07,161 INFO L495 AbstractCegarLoop]: Abstraction has 1139 states and 1368 transitions. [2023-12-21 02:58:07,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 states have internal predecessors, (64), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:07,161 INFO L276 IsEmpty]: Start isEmpty. Operand 1139 states and 1368 transitions. [2023-12-21 02:58:07,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:07,162 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:07,162 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:07,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-12-21 02:58:07,163 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:07,163 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:07,163 INFO L85 PathProgramCache]: Analyzing trace with hash -635955662, now seen corresponding path program 1 times [2023-12-21 02:58:07,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:07,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990674959] [2023-12-21 02:58:07,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:07,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:08,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:08,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:08,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:08,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:08,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:08,518 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:08,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:08,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990674959] [2023-12-21 02:58:08,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990674959] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:08,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:08,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-12-21 02:58:08,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129948128] [2023-12-21 02:58:08,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:08,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-12-21 02:58:08,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:08,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-12-21 02:58:08,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:58:08,519 INFO L87 Difference]: Start difference. First operand 1139 states and 1368 transitions. Second operand has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:09,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:09,765 INFO L93 Difference]: Finished difference Result 2703 states and 3173 transitions. [2023-12-21 02:58:09,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-12-21 02:58:09,765 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 02:58:09,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:09,768 INFO L225 Difference]: With dead ends: 2703 [2023-12-21 02:58:09,768 INFO L226 Difference]: Without dead ends: 2087 [2023-12-21 02:58:09,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=315, Invalid=1167, Unknown=0, NotChecked=0, Total=1482 [2023-12-21 02:58:09,770 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 644 mSDsluCounter, 893 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 644 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:09,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [644 Valid, 980 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1053 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-12-21 02:58:09,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2087 states. [2023-12-21 02:58:09,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2087 to 1368. [2023-12-21 02:58:09,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1368 states, 1319 states have (on average 1.1736163760424565) internal successors, (1548), 1319 states have internal predecessors, (1548), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1368 states to 1368 states and 1628 transitions. [2023-12-21 02:58:09,904 INFO L78 Accepts]: Start accepts. Automaton has 1368 states and 1628 transitions. Word has length 162 [2023-12-21 02:58:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:09,904 INFO L495 AbstractCegarLoop]: Abstraction has 1368 states and 1628 transitions. [2023-12-21 02:58:09,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.4210526315789473) internal successors, (65), 19 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1368 states and 1628 transitions. [2023-12-21 02:58:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:09,905 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:09,905 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:09,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-12-21 02:58:09,906 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:09,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:09,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1139051700, now seen corresponding path program 1 times [2023-12-21 02:58:09,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:09,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862743374] [2023-12-21 02:58:09,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:09,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:10,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:10,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:10,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:10,581 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:10,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:10,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862743374] [2023-12-21 02:58:10,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862743374] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:10,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:10,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:58:10,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133453194] [2023-12-21 02:58:10,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:10,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:58:10,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:10,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:58:10,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:58:10,582 INFO L87 Difference]: Start difference. First operand 1368 states and 1628 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:11,497 INFO L93 Difference]: Finished difference Result 2654 states and 3126 transitions. [2023-12-21 02:58:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-12-21 02:58:11,498 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 02:58:11,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:11,500 INFO L225 Difference]: With dead ends: 2654 [2023-12-21 02:58:11,500 INFO L226 Difference]: Without dead ends: 2038 [2023-12-21 02:58:11,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=527, Unknown=0, NotChecked=0, Total=702 [2023-12-21 02:58:11,501 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 418 mSDsluCounter, 502 mSDsCounter, 0 mSdLazyCounter, 989 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:11,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 597 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 989 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:58:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2023-12-21 02:58:11,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1490. [2023-12-21 02:58:11,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1441 states have (on average 1.1665510062456628) internal successors, (1681), 1441 states have internal predecessors, (1681), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1761 transitions. [2023-12-21 02:58:11,592 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1761 transitions. Word has length 162 [2023-12-21 02:58:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:11,593 INFO L495 AbstractCegarLoop]: Abstraction has 1490 states and 1761 transitions. [2023-12-21 02:58:11,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1761 transitions. [2023-12-21 02:58:11,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:11,594 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:11,594 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:11,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-12-21 02:58:11,594 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:11,594 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:11,594 INFO L85 PathProgramCache]: Analyzing trace with hash 750247732, now seen corresponding path program 1 times [2023-12-21 02:58:11,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:11,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021493131] [2023-12-21 02:58:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:11,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:12,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:12,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:12,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:12,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:12,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:12,324 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:12,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:12,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021493131] [2023-12-21 02:58:12,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021493131] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:12,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:12,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:58:12,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625637148] [2023-12-21 02:58:12,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:12,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:58:12,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:12,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:58:12,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:58:12,325 INFO L87 Difference]: Start difference. First operand 1490 states and 1761 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:13,217 INFO L93 Difference]: Finished difference Result 2818 states and 3313 transitions. [2023-12-21 02:58:13,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-12-21 02:58:13,218 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 02:58:13,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:13,220 INFO L225 Difference]: With dead ends: 2818 [2023-12-21 02:58:13,220 INFO L226 Difference]: Without dead ends: 2056 [2023-12-21 02:58:13,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=452, Unknown=0, NotChecked=0, Total=600 [2023-12-21 02:58:13,221 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 406 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:13,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 596 Invalid, 868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 02:58:13,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2023-12-21 02:58:13,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1532. [2023-12-21 02:58:13,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1532 states, 1483 states have (on average 1.169925826028321) internal successors, (1735), 1483 states have internal predecessors, (1735), 40 states have call successors, (40), 8 states have call predecessors, (40), 8 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1815 transitions. [2023-12-21 02:58:13,312 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1815 transitions. Word has length 162 [2023-12-21 02:58:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:13,312 INFO L495 AbstractCegarLoop]: Abstraction has 1532 states and 1815 transitions. [2023-12-21 02:58:13,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1815 transitions. [2023-12-21 02:58:13,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:13,313 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:13,314 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:13,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-12-21 02:58:13,314 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:13,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:13,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1769712202, now seen corresponding path program 1 times [2023-12-21 02:58:13,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:13,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526080710] [2023-12-21 02:58:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:13,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:13,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:15,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:15,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:15,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:15,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:15,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:15,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:15,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:15,969 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:58:15,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:15,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526080710] [2023-12-21 02:58:15,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526080710] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:15,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:15,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2023-12-21 02:58:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244681203] [2023-12-21 02:58:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-12-21 02:58:15,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:15,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-12-21 02:58:15,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2023-12-21 02:58:15,970 INFO L87 Difference]: Start difference. First operand 1532 states and 1815 transitions. Second operand has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:58:20,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:20,506 INFO L93 Difference]: Finished difference Result 3161 states and 3663 transitions. [2023-12-21 02:58:20,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-12-21 02:58:20,506 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 162 [2023-12-21 02:58:20,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:20,509 INFO L225 Difference]: With dead ends: 3161 [2023-12-21 02:58:20,509 INFO L226 Difference]: Without dead ends: 2365 [2023-12-21 02:58:20,510 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 42 SyntacticMatches, 2 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 607 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=540, Invalid=2882, Unknown=0, NotChecked=0, Total=3422 [2023-12-21 02:58:20,510 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 841 mSDsluCounter, 1418 mSDsCounter, 0 mSdLazyCounter, 2855 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 841 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 3221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:20,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [841 Valid, 1499 Invalid, 3221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 2855 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-12-21 02:58:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2023-12-21 02:58:20,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 1602. [2023-12-21 02:58:20,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1552 states have (on average 1.166237113402062) internal successors, (1810), 1552 states have internal predecessors, (1810), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:20,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 1890 transitions. [2023-12-21 02:58:20,619 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 1890 transitions. Word has length 162 [2023-12-21 02:58:20,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:20,620 INFO L495 AbstractCegarLoop]: Abstraction has 1602 states and 1890 transitions. [2023-12-21 02:58:20,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.8333333333333335) internal successors, (68), 24 states have internal predecessors, (68), 3 states have call successors, (20), 1 states have call predecessors, (20), 2 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:58:20,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 1890 transitions. [2023-12-21 02:58:20,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:20,621 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:20,621 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:20,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-12-21 02:58:20,622 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:20,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:20,622 INFO L85 PathProgramCache]: Analyzing trace with hash 2001798785, now seen corresponding path program 1 times [2023-12-21 02:58:20,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:20,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605663803] [2023-12-21 02:58:20,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:20,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:20,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:21,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:21,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:21,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:21,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:21,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:21,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:21,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:21,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:21,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:21,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:21,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:21,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:21,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:21,322 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:21,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:21,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605663803] [2023-12-21 02:58:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605663803] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:21,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:21,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 02:58:21,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930660668] [2023-12-21 02:58:21,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:21,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 02:58:21,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:21,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 02:58:21,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-21 02:58:21,323 INFO L87 Difference]: Start difference. First operand 1602 states and 1890 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:22,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:22,011 INFO L93 Difference]: Finished difference Result 2298 states and 2768 transitions. [2023-12-21 02:58:22,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 02:58:22,012 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 02:58:22,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:22,014 INFO L225 Difference]: With dead ends: 2298 [2023-12-21 02:58:22,014 INFO L226 Difference]: Without dead ends: 2296 [2023-12-21 02:58:22,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-21 02:58:22,015 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 321 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 670 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:22,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 517 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 670 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-12-21 02:58:22,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2023-12-21 02:58:22,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 2006. [2023-12-21 02:58:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2006 states, 1956 states have (on average 1.1866053169734152) internal successors, (2321), 1956 states have internal predecessors, (2321), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:22,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2006 states to 2006 states and 2401 transitions. [2023-12-21 02:58:22,122 INFO L78 Accepts]: Start accepts. Automaton has 2006 states and 2401 transitions. Word has length 162 [2023-12-21 02:58:22,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:22,122 INFO L495 AbstractCegarLoop]: Abstraction has 2006 states and 2401 transitions. [2023-12-21 02:58:22,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 02:58:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2006 states and 2401 transitions. [2023-12-21 02:58:22,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:22,124 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:22,124 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:22,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-12-21 02:58:22,124 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:22,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:22,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1157793283, now seen corresponding path program 1 times [2023-12-21 02:58:22,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:22,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118697125] [2023-12-21 02:58:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:22,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:23,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:23,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:23,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:23,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:23,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:23,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:23,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:23,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:23,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:23,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118697125] [2023-12-21 02:58:23,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118697125] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:23,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:23,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:58:23,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261215246] [2023-12-21 02:58:23,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:23,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:58:23,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:23,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:58:23,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:58:23,161 INFO L87 Difference]: Start difference. First operand 2006 states and 2401 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:58:23,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:23,855 INFO L93 Difference]: Finished difference Result 3358 states and 4016 transitions. [2023-12-21 02:58:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-12-21 02:58:23,856 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 162 [2023-12-21 02:58:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:23,859 INFO L225 Difference]: With dead ends: 3358 [2023-12-21 02:58:23,859 INFO L226 Difference]: Without dead ends: 2348 [2023-12-21 02:58:23,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2023-12-21 02:58:23,861 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 200 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:23,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 415 Invalid, 619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 02:58:23,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2023-12-21 02:58:23,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2059. [2023-12-21 02:58:23,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2059 states, 2009 states have (on average 1.1821801891488302) internal successors, (2375), 2009 states have internal predecessors, (2375), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:23,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2059 states to 2059 states and 2455 transitions. [2023-12-21 02:58:23,962 INFO L78 Accepts]: Start accepts. Automaton has 2059 states and 2455 transitions. Word has length 162 [2023-12-21 02:58:23,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:23,963 INFO L495 AbstractCegarLoop]: Abstraction has 2059 states and 2455 transitions. [2023-12-21 02:58:23,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 02:58:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2059 states and 2455 transitions. [2023-12-21 02:58:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:23,964 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:23,964 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-12-21 02:58:23,965 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:23,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:23,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1086419462, now seen corresponding path program 1 times [2023-12-21 02:58:23,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:23,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648484249] [2023-12-21 02:58:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:25,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:25,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:25,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:25,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:25,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:25,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:25,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:25,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:25,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:25,084 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:25,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:25,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648484249] [2023-12-21 02:58:25,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648484249] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:25,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 02:58:25,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-12-21 02:58:25,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124252909] [2023-12-21 02:58:25,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:25,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-12-21 02:58:25,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:25,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-12-21 02:58:25,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2023-12-21 02:58:25,086 INFO L87 Difference]: Start difference. First operand 2059 states and 2455 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:25,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 02:58:25,823 INFO L93 Difference]: Finished difference Result 3287 states and 3884 transitions. [2023-12-21 02:58:25,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 02:58:25,823 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-21 02:58:25,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 02:58:25,853 INFO L225 Difference]: With dead ends: 3287 [2023-12-21 02:58:25,854 INFO L226 Difference]: Without dead ends: 2275 [2023-12-21 02:58:25,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=367, Unknown=0, NotChecked=0, Total=552 [2023-12-21 02:58:25,855 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 422 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-21 02:58:25,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 596 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 457 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-21 02:58:25,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2023-12-21 02:58:25,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2041. [2023-12-21 02:58:25,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2041 states, 1991 states have (on average 1.1813159216474134) internal successors, (2352), 1991 states have internal predecessors, (2352), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 02:58:25,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2041 states to 2041 states and 2432 transitions. [2023-12-21 02:58:25,979 INFO L78 Accepts]: Start accepts. Automaton has 2041 states and 2432 transitions. Word has length 162 [2023-12-21 02:58:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 02:58:25,979 INFO L495 AbstractCegarLoop]: Abstraction has 2041 states and 2432 transitions. [2023-12-21 02:58:25,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:25,979 INFO L276 IsEmpty]: Start isEmpty. Operand 2041 states and 2432 transitions. [2023-12-21 02:58:25,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 02:58:25,981 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 02:58:25,981 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 02:58:25,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-12-21 02:58:25,982 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 02:58:25,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 02:58:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 293059630, now seen corresponding path program 1 times [2023-12-21 02:58:25,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 02:58:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544221710] [2023-12-21 02:58:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 02:58:26,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 02:58:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 02:58:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 02:58:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 02:58:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 02:58:31,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 02:58:31,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 02:58:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 02:58:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 02:58:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 02:58:31,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 02:58:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 02:58:31,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 02:58:31,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 02:58:31,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 02:58:31,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 02:58:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 02:58:31,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 02:58:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 02:58:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 02:58:31,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,337 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 12 proven. 45 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2023-12-21 02:58:31,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 02:58:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544221710] [2023-12-21 02:58:31,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544221710] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-21 02:58:31,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969694929] [2023-12-21 02:58:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 02:58:31,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 02:58:31,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-21 02:58:31,340 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-21 02:58:31,344 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-12-21 02:58:31,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 02:58:31,617 INFO L262 TraceCheckSpWp]: Trace formula consists of 561 conjuncts, 35 conjunts are in the unsatisfiable core [2023-12-21 02:58:31,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-21 02:58:32,649 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 64 treesize of output 43 [2023-12-21 02:58:32,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,652 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2023-12-21 02:58:32,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,658 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 22 [2023-12-21 02:58:32,767 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 97 treesize of output 73 [2023-12-21 02:58:32,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 73 treesize of output 93 [2023-12-21 02:58:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,816 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-21 02:58:32,818 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 18 [2023-12-21 02:58:38,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 270 treesize of output 212 [2023-12-21 02:58:38,370 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-21 02:58:38,371 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 324 treesize of output 474 [2023-12-21 02:58:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 02:58:45,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-21 02:58:45,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [969694929] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 02:58:45,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-21 02:58:45,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [31] total 36 [2023-12-21 02:58:45,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398506872] [2023-12-21 02:58:45,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 02:58:45,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-12-21 02:58:45,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 02:58:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-12-21 02:58:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1172, Unknown=1, NotChecked=0, Total=1260 [2023-12-21 02:58:45,658 INFO L87 Difference]: Start difference. First operand 2041 states and 2432 transitions. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 02:58:50,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:58:54,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:58:58,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:02,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:06,555 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:10,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:14,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:18,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:22,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:26,920 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:30,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:34,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:39,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:43,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:47,129 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:51,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:55,180 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 02:59:59,215 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:03,237 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:07,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:11,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:15,346 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:19,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:23,403 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:27,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:31,473 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:35,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:39,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:43,579 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:47,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:00:51,642 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:03,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:07,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:11,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:16,349 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:29,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:33,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:37,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:41,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:45,203 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:50,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:54,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:01:58,217 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:02:02,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:02:06,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-12-21 03:02:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:06,965 INFO L93 Difference]: Finished difference Result 3376 states and 4000 transitions. [2023-12-21 03:02:06,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-12-21 03:02:06,965 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 162 [2023-12-21 03:02:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:06,968 INFO L225 Difference]: With dead ends: 3376 [2023-12-21 03:02:06,968 INFO L226 Difference]: Without dead ends: 2382 [2023-12-21 03:02:06,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 202 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 24.4s TimeCoverageRelationStatistics Valid=172, Invalid=1893, Unknown=5, NotChecked=0, Total=2070 [2023-12-21 03:02:06,969 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 262 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 723 mSolverCounterSat, 5 mSolverCounterUnsat, 47 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 181.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 723 IncrementalHoareTripleChecker+Invalid, 47 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 182.5s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:06,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 659 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 723 Invalid, 47 Unknown, 0 Unchecked, 182.5s Time] [2023-12-21 03:02:06,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2382 states. [2023-12-21 03:02:07,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2382 to 2241. [2023-12-21 03:02:07,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2241 states, 2191 states have (on average 1.1798265632131446) internal successors, (2585), 2191 states have internal predecessors, (2585), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 03:02:07,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2241 states to 2241 states and 2665 transitions. [2023-12-21 03:02:07,075 INFO L78 Accepts]: Start accepts. Automaton has 2241 states and 2665 transitions. Word has length 162 [2023-12-21 03:02:07,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:07,075 INFO L495 AbstractCegarLoop]: Abstraction has 2241 states and 2665 transitions. [2023-12-21 03:02:07,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 9 states have internal predecessors, (65), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) [2023-12-21 03:02:07,075 INFO L276 IsEmpty]: Start isEmpty. Operand 2241 states and 2665 transitions. [2023-12-21 03:02:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 03:02:07,077 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:02:07,077 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:02:07,096 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-12-21 03:02:07,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-21 03:02:07,284 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:02:07,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:02:07,285 INFO L85 PathProgramCache]: Analyzing trace with hash 2068066992, now seen corresponding path program 1 times [2023-12-21 03:02:07,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:02:07,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754843243] [2023-12-21 03:02:07,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:02:07,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:02:07,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 03:02:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 03:02:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 03:02:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 03:02:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 03:02:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 03:02:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 03:02:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 03:02:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 03:02:07,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 03:02:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 03:02:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 03:02:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 03:02:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 03:02:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 03:02:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 03:02:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 03:02:07,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 03:02:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 03:02:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 03:02:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:07,930 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 03:02:07,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:02:07,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754843243] [2023-12-21 03:02:07,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754843243] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:02:07,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:02:07,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 03:02:07,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778088137] [2023-12-21 03:02:07,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:02:07,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 03:02:07,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:02:07,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 03:02:07,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2023-12-21 03:02:07,932 INFO L87 Difference]: Start difference. First operand 2241 states and 2665 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:08,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:08,695 INFO L93 Difference]: Finished difference Result 3441 states and 4077 transitions. [2023-12-21 03:02:08,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 03:02:08,695 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 03:02:08,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:08,698 INFO L225 Difference]: With dead ends: 3441 [2023-12-21 03:02:08,698 INFO L226 Difference]: Without dead ends: 2282 [2023-12-21 03:02:08,700 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-12-21 03:02:08,700 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 444 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:08,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [444 Valid, 420 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 03:02:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2282 states. [2023-12-21 03:02:08,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2282 to 2199. [2023-12-21 03:02:08,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2199 states, 2149 states have (on average 1.1772917636109819) internal successors, (2530), 2149 states have internal predecessors, (2530), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 03:02:08,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2199 states to 2199 states and 2610 transitions. [2023-12-21 03:02:08,804 INFO L78 Accepts]: Start accepts. Automaton has 2199 states and 2610 transitions. Word has length 162 [2023-12-21 03:02:08,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:08,804 INFO L495 AbstractCegarLoop]: Abstraction has 2199 states and 2610 transitions. [2023-12-21 03:02:08,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:08,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2199 states and 2610 transitions. [2023-12-21 03:02:08,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 03:02:08,806 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:02:08,807 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:02:08,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-12-21 03:02:08,807 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:02:08,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:02:08,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1679263024, now seen corresponding path program 1 times [2023-12-21 03:02:08,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:02:08,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527818979] [2023-12-21 03:02:08,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:02:08,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:02:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 03:02:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 03:02:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 03:02:09,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 03:02:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 03:02:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 03:02:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 03:02:09,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 03:02:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 03:02:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 03:02:09,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 03:02:09,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 03:02:09,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 03:02:09,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 03:02:09,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 03:02:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 03:02:09,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 03:02:09,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 03:02:09,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 03:02:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 03:02:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:09,449 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 03:02:09,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:02:09,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527818979] [2023-12-21 03:02:09,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527818979] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:02:09,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:02:09,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-12-21 03:02:09,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653246753] [2023-12-21 03:02:09,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:02:09,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-12-21 03:02:09,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:02:09,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-12-21 03:02:09,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-12-21 03:02:09,450 INFO L87 Difference]: Start difference. First operand 2199 states and 2610 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:10,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:10,244 INFO L93 Difference]: Finished difference Result 3354 states and 3969 transitions. [2023-12-21 03:02:10,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 03:02:10,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 03:02:10,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:10,246 INFO L225 Difference]: With dead ends: 3354 [2023-12-21 03:02:10,247 INFO L226 Difference]: Without dead ends: 2229 [2023-12-21 03:02:10,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2023-12-21 03:02:10,248 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 265 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:10,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 508 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-21 03:02:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2023-12-21 03:02:10,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 2165. [2023-12-21 03:02:10,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2165 states, 2115 states have (on average 1.1777777777777778) internal successors, (2491), 2115 states have internal predecessors, (2491), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 03:02:10,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2165 states to 2165 states and 2571 transitions. [2023-12-21 03:02:10,352 INFO L78 Accepts]: Start accepts. Automaton has 2165 states and 2571 transitions. Word has length 162 [2023-12-21 03:02:10,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:10,352 INFO L495 AbstractCegarLoop]: Abstraction has 2165 states and 2571 transitions. [2023-12-21 03:02:10,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 11 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 2165 states and 2571 transitions. [2023-12-21 03:02:10,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2023-12-21 03:02:10,354 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:02:10,354 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:02:10,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-12-21 03:02:10,355 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:02:10,355 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:02:10,355 INFO L85 PathProgramCache]: Analyzing trace with hash -840696910, now seen corresponding path program 1 times [2023-12-21 03:02:10,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:02:10,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069066892] [2023-12-21 03:02:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:02:10,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:02:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 03:02:11,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 03:02:11,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 03:02:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 03:02:11,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 03:02:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 03:02:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 03:02:11,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 03:02:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 03:02:11,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 03:02:11,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 03:02:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 03:02:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 03:02:11,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 03:02:11,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 03:02:11,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 03:02:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 03:02:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 03:02:11,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 03:02:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 03:02:11,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 03:02:11,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:02:11,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069066892] [2023-12-21 03:02:11,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069066892] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:02:11,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:02:11,516 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 03:02:11,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118369387] [2023-12-21 03:02:11,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:02:11,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 03:02:11,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:02:11,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 03:02:11,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-12-21 03:02:11,517 INFO L87 Difference]: Start difference. First operand 2165 states and 2571 transitions. Second operand has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:12,716 INFO L93 Difference]: Finished difference Result 3283 states and 3888 transitions. [2023-12-21 03:02:12,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-21 03:02:12,716 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 162 [2023-12-21 03:02:12,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:12,718 INFO L225 Difference]: With dead ends: 3283 [2023-12-21 03:02:12,718 INFO L226 Difference]: Without dead ends: 2192 [2023-12-21 03:02:12,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2023-12-21 03:02:12,720 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 260 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 734 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:12,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [260 Valid, 734 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-12-21 03:02:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2023-12-21 03:02:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2031. [2023-12-21 03:02:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2031 states, 1981 states have (on average 1.1746592629984856) internal successors, (2327), 1981 states have internal predecessors, (2327), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 03:02:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2031 states to 2031 states and 2407 transitions. [2023-12-21 03:02:12,832 INFO L78 Accepts]: Start accepts. Automaton has 2031 states and 2407 transitions. Word has length 162 [2023-12-21 03:02:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 2031 states and 2407 transitions. [2023-12-21 03:02:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.416666666666667) internal successors, (65), 12 states have internal predecessors, (65), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 2031 states and 2407 transitions. [2023-12-21 03:02:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 03:02:12,835 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:02:12,835 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:02:12,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-12-21 03:02:12,835 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:02:12,835 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:02:12,835 INFO L85 PathProgramCache]: Analyzing trace with hash 1339937595, now seen corresponding path program 1 times [2023-12-21 03:02:12,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:02:12,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008213861] [2023-12-21 03:02:12,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:02:12,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:02:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 03:02:13,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 03:02:13,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 03:02:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 03:02:13,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 03:02:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 03:02:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 03:02:13,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 03:02:13,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 03:02:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 03:02:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 03:02:13,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 03:02:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 03:02:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 03:02:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 03:02:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 03:02:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 03:02:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 03:02:13,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 03:02:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 03:02:13,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:13,807 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 03:02:13,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:02:13,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008213861] [2023-12-21 03:02:13,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008213861] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:02:13,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:02:13,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-12-21 03:02:13,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521388025] [2023-12-21 03:02:13,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:02:13,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-12-21 03:02:13,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:02:13,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-12-21 03:02:13,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2023-12-21 03:02:13,808 INFO L87 Difference]: Start difference. First operand 2031 states and 2407 transitions. Second operand has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:14,634 INFO L93 Difference]: Finished difference Result 3136 states and 3642 transitions. [2023-12-21 03:02:14,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-12-21 03:02:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 166 [2023-12-21 03:02:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:14,638 INFO L225 Difference]: With dead ends: 3136 [2023-12-21 03:02:14,638 INFO L226 Difference]: Without dead ends: 3134 [2023-12-21 03:02:14,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2023-12-21 03:02:14,639 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 339 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:14,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [339 Valid, 445 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-12-21 03:02:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3134 states. [2023-12-21 03:02:14,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3134 to 2943. [2023-12-21 03:02:14,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2943 states, 2893 states have (on average 1.1555478741790528) internal successors, (3343), 2893 states have internal predecessors, (3343), 40 states have call successors, (40), 9 states have call predecessors, (40), 9 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2023-12-21 03:02:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2943 states to 2943 states and 3423 transitions. [2023-12-21 03:02:14,770 INFO L78 Accepts]: Start accepts. Automaton has 2943 states and 3423 transitions. Word has length 166 [2023-12-21 03:02:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:14,771 INFO L495 AbstractCegarLoop]: Abstraction has 2943 states and 3423 transitions. [2023-12-21 03:02:14,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.75) internal successors, (69), 12 states have internal predecessors, (69), 2 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2023-12-21 03:02:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2943 states and 3423 transitions. [2023-12-21 03:02:14,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-12-21 03:02:14,773 INFO L187 NwaCegarLoop]: Found error trace [2023-12-21 03:02:14,773 INFO L195 NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-21 03:02:14,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-12-21 03:02:14,773 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-21 03:02:14,773 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-21 03:02:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -505429571, now seen corresponding path program 1 times [2023-12-21 03:02:14,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-21 03:02:14,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132121772] [2023-12-21 03:02:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-21 03:02:14,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-21 03:02:14,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-12-21 03:02:16,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-12-21 03:02:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-12-21 03:02:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-12-21 03:02:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-12-21 03:02:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-12-21 03:02:16,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-12-21 03:02:16,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-12-21 03:02:16,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-12-21 03:02:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-12-21 03:02:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-12-21 03:02:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-12-21 03:02:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-12-21 03:02:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-12-21 03:02:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-12-21 03:02:16,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-12-21 03:02:16,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2023-12-21 03:02:16,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-12-21 03:02:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-12-21 03:02:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-12-21 03:02:16,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-21 03:02:16,913 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2023-12-21 03:02:16,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-21 03:02:16,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132121772] [2023-12-21 03:02:16,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132121772] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-21 03:02:16,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-21 03:02:16,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-12-21 03:02:16,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394537383] [2023-12-21 03:02:16,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-21 03:02:16,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-12-21 03:02:16,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-21 03:02:16,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-12-21 03:02:16,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2023-12-21 03:02:16,921 INFO L87 Difference]: Start difference. First operand 2943 states and 3423 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 03:02:18,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-21 03:02:18,367 INFO L93 Difference]: Finished difference Result 4504 states and 5229 transitions. [2023-12-21 03:02:18,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-12-21 03:02:18,367 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 166 [2023-12-21 03:02:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-21 03:02:18,367 INFO L225 Difference]: With dead ends: 4504 [2023-12-21 03:02:18,368 INFO L226 Difference]: Without dead ends: 0 [2023-12-21 03:02:18,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2023-12-21 03:02:18,370 INFO L413 NwaCegarLoop]: 118 mSDtfsCounter, 270 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 859 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-12-21 03:02:18,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 465 Invalid, 873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 859 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-12-21 03:02:18,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-12-21 03:02:18,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-12-21 03:02:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-12-21 03:02:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-12-21 03:02:18,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 166 [2023-12-21 03:02:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-21 03:02:18,371 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-12-21 03:02:18,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 3 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2023-12-21 03:02:18,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-12-21 03:02:18,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-12-21 03:02:18,373 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-12-21 03:02:18,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-12-21 03:02:18,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2023-12-21 03:09:54,691 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-21 03:09:54,699 WARN L619 AbstractCegarLoop]: Verification canceled: while PolyPacSimplificationTermWalker was simplifying a ∨-3-180-3-17-2-20-2-16-3-14-3-23-3-12-3-11-6-20-3-10-7-20-7-20-4-20-3-17-3-17-3-17-3-16-3-16-3-16-2-21-2-21-2-21-2-21-2-20-2-20-2-20-2-20-3-14-3-14-5-13-5-19-5-19-5-19-4-19-4-19-4-17-2-14-2-22-2-22-2-22-2-22-2-22-2-22-2-17-2-17-2-16-7-31-7-31-7-31-7-31-7-31-7-31-6-31-3-20-3-20-3-16-3-14-3-12-3-10-3-9-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-256-180-7-23-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-7-31-6-31-3-20-3-20-3-16-3-14-3-12-3-10-3-9-2-3-1 context. [2023-12-21 03:09:54,704 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-12-21 03:09:54,727 INFO L257 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2023-12-21 03:09:54,729 INFO L158 Benchmark]: Toolchain (without parser) took 831134.37ms. Allocated memory was 215.0MB in the beginning and 1.0GB in the end (delta: 795.9MB). Free memory was 170.2MB in the beginning and 814.0MB in the end (delta: -643.8MB). Peak memory consumption was 153.1MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,729 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 175.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. [2023-12-21 03:09:54,729 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.16ms. Allocated memory is still 215.0MB. Free memory was 169.9MB in the beginning and 154.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,729 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.66ms. Allocated memory is still 215.0MB. Free memory was 154.1MB in the beginning and 150.6MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,729 INFO L158 Benchmark]: Boogie Preprocessor took 60.88ms. Allocated memory is still 215.0MB. Free memory was 150.6MB in the beginning and 146.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,729 INFO L158 Benchmark]: RCFGBuilder took 554.40ms. Allocated memory is still 215.0MB. Free memory was 146.4MB in the beginning and 172.1MB in the end (delta: -25.6MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,730 INFO L158 Benchmark]: TraceAbstraction took 830206.66ms. Allocated memory was 215.0MB in the beginning and 1.0GB in the end (delta: 795.9MB). Free memory was 171.6MB in the beginning and 814.0MB in the end (delta: -642.4MB). Peak memory consumption was 153.4MB. Max. memory is 8.0GB. [2023-12-21 03:09:54,730 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 175.1MB. Free memory is still 128.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 247.16ms. Allocated memory is still 215.0MB. Free memory was 169.9MB in the beginning and 154.1MB in the end (delta: 15.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.66ms. Allocated memory is still 215.0MB. Free memory was 154.1MB in the beginning and 150.6MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 60.88ms. Allocated memory is still 215.0MB. Free memory was 150.6MB in the beginning and 146.4MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 554.40ms. Allocated memory is still 215.0MB. Free memory was 146.4MB in the beginning and 172.1MB in the end (delta: -25.6MB). Peak memory consumption was 30.1MB. Max. memory is 8.0GB. * TraceAbstraction took 830206.66ms. Allocated memory was 215.0MB in the beginning and 1.0GB in the end (delta: 795.9MB). Free memory was 171.6MB in the beginning and 814.0MB in the end (delta: -642.4MB). Peak memory consumption was 153.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while PolyPacSimplificationTermWalker was simplifying a ∨-3-180-3-17-2-20-2-16-3-14-3-23-3-12-3-11-6-20-3-10-7-20-7-20-4-20-3-17-3-17-3-17-3-16-3-16-3-16-2-21-2-21-2-21-2-21-2-20-2-20-2-20-2-20-3-14-3-14-5-13-5-19-5-19-5-19-4-19-4-19-4-17-2-14-2-22-2-22-2-22-2-22-2-22-2-22-2-17-2-17-2-16-7-31-7-31-7-31-7-31-7-31-7-31-6-31-3-20-3-20-3-16-3-14-3-12-3-10-3-9-2-3-1 term,while PolyPacSimplificationTermWalker was simplifying 4 xjuncts wrt. a ∧-62-180-12-23-11-23-20-23-10-23-20-23-20-20-20-20-17-20-17-20-17-20-16-20-16-20-16-17-21-21-21-21-21-21-21-21-20-21-20-21-20-21-20-21-14-21-14-20-13-20-19-20-19-20-19-19-19-19-19-19-17-19-14-19-22-22-22-22-22-22-22-22-22-22-22-22-17-22-17-22-16-22-31-31-31-31-31-31-31-31-31-31-31-31-31-31-20-31-20-31-16-31-14-31-12-31-10-20-9-20-3-16-3-14-3-12-3-10-3-9-2-3-1 context. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown