/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-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c


--------------------------------------------------------------------------------


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 20:22:24,901 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 20:22:24,949 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 20:22:24,953 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 20:22:24,953 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 20:22:24,970 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 20:22:24,971 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 20:22:24,971 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 20:22:24,971 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 20:22:24,972 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 20:22:24,972 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 20:22:24,972 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 20:22:24,973 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 20:22:24,973 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 20:22:24,973 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 20:22:24,974 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 20:22:24,974 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 20:22:24,974 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 20:22:24,975 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 20:22:24,975 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 20:22:24,975 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 20:22:24,975 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 20:22:24,976 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 20:22:24,976 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 20:22:24,976 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 20:22:24,976 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 20:22:24,977 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 20:22:24,977 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 20:22:24,977 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 20:22:24,977 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:22:24,977 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 20:22:24,978 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 20:22:24,979 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 20:22:24,979 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 20:22:24,979 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 20:22:24,979 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 20:22:25,140 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 20:22:25,159 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 20:22:25,160 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 20:22:25,161 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 20:22:25,161 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 20:22:25,162 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c
[2023-12-25 20:22:26,353 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 20:22:26,722 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 20:22:26,723 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c
[2023-12-25 20:22:26,756 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02f2e1f7/c0bf03484d9f4533af0456c666dd1421/FLAG60eb97dbb
[2023-12-25 20:22:26,769 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b02f2e1f7/c0bf03484d9f4533af0456c666dd1421
[2023-12-25 20:22:26,773 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 20:22:26,774 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 20:22:26,775 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 20:22:26,775 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 20:22:26,779 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 20:22:26,780 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:22:26" (1/1) ...
[2023-12-25 20:22:26,780 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4751908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:26, skipping insertion in model container
[2023-12-25 20:22:26,781 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 08:22:26" (1/1) ...
[2023-12-25 20:22:26,877 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 20:22:27,106 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c[1181,1194]
[2023-12-25 20:22:27,794 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:22:27,805 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 20:22:27,814 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c[1181,1194]
[2023-12-25 20:22:28,225 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 20:22:28,237 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 20:22:28,240 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28 WrapperNode
[2023-12-25 20:22:28,240 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 20:22:28,241 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 20:22:28,241 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 20:22:28,242 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 20:22:28,246 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:28,517 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:29,948 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 20677
[2023-12-25 20:22:29,949 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 20:22:29,949 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 20:22:29,950 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 20:22:29,950 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 20:22:29,963 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:29,963 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:30,396 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:30,722 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 20:22:30,723 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:30,723 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:31,336 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:31,421 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:31,529 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:31,594 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:32,005 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 20:22:32,006 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 20:22:32,006 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 20:22:32,006 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 20:22:32,007 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (1/1) ...
[2023-12-25 20:22:32,012 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 20:22:32,021 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:22:32,033 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)
[2023-12-25 20:22:32,039 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
[2023-12-25 20:22:32,058 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 20:22:32,058 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 20:22:32,058 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 20:22:32,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 20:22:33,046 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 20:22:33,048 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 20:22:41,109 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 20:22:41,370 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 20:22:41,370 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 20:22:41,371 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:22:41 BoogieIcfgContainer
[2023-12-25 20:22:41,372 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 20:22:41,374 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 20:22:41,374 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 20:22:41,377 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 20:22:41,378 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 08:22:26" (1/3) ...
[2023-12-25 20:22:41,378 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4422cf8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:22:41, skipping insertion in model container
[2023-12-25 20:22:41,378 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 08:22:28" (2/3) ...
[2023-12-25 20:22:41,378 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4422cf8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 08:22:41, skipping insertion in model container
[2023-12-25 20:22:41,379 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 08:22:41" (3/3) ...
[2023-12-25 20:22:41,380 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.peg_solitaire.6.prop1-back-serstep.c
[2023-12-25 20:22:41,393 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 20:22:41,393 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 20:22:41,492 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 20:22:41,498 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;@4384725a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 20:22:41,499 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 20:22:41,514 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 4220 states, 4218 states have (on average 1.6666666666666667) internal successors, (7030), 4219 states have internal predecessors, (7030), 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)
[2023-12-25 20:22:41,538 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 431
[2023-12-25 20:22:41,538 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:41,539 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:22:41,540 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:41,544 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:41,544 INFO  L85        PathProgramCache]: Analyzing trace with hash -447706580, now seen corresponding path program 1 times
[2023-12-25 20:22:41,552 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:41,552 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836079785]
[2023-12-25 20:22:41,552 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:41,553 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:42,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:43,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:43,506 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:43,506 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836079785]
[2023-12-25 20:22:43,507 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836079785] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:43,507 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:43,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:22:43,508 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923699202]
[2023-12-25 20:22:43,509 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:43,514 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:22:43,515 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:43,545 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:22:43,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:22:43,556 INFO  L87              Difference]: Start difference. First operand  has 4220 states, 4218 states have (on average 1.6666666666666667) internal successors, (7030), 4219 states have internal predecessors, (7030), 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) Second operand  has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 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)
[2023-12-25 20:22:43,793 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:43,794 INFO  L93              Difference]: Finished difference Result 8319 states and 13861 transitions.
[2023-12-25 20:22:43,795 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:22:43,796 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 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) Word has length 430
[2023-12-25 20:22:43,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:43,916 INFO  L225             Difference]: With dead ends: 8319
[2023-12-25 20:22:43,917 INFO  L226             Difference]: Without dead ends: 4220
[2023-12-25 20:22:43,925 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:22:43,928 INFO  L413           NwaCegarLoop]: 7023 mSDtfsCounter, 1 mSDsluCounter, 14041 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21064 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:43,929 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21064 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:22:43,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4220 states.
[2023-12-25 20:22:44,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4220.
[2023-12-25 20:22:44,054 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4220 states, 4219 states have (on average 1.6657975823654894) internal successors, (7028), 4219 states have internal predecessors, (7028), 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)
[2023-12-25 20:22:44,066 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4220 states to 4220 states and 7028 transitions.
[2023-12-25 20:22:44,067 INFO  L78                 Accepts]: Start accepts. Automaton has 4220 states and 7028 transitions. Word has length 430
[2023-12-25 20:22:44,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:44,068 INFO  L495      AbstractCegarLoop]: Abstraction has 4220 states and 7028 transitions.
[2023-12-25 20:22:44,068 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 107.5) internal successors, (430), 4 states have internal predecessors, (430), 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)
[2023-12-25 20:22:44,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 4220 states and 7028 transitions.
[2023-12-25 20:22:44,075 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 432
[2023-12-25 20:22:44,075 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:44,075 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:22:44,075 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 20:22:44,076 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:44,076 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:44,076 INFO  L85        PathProgramCache]: Analyzing trace with hash -992274588, now seen corresponding path program 1 times
[2023-12-25 20:22:44,077 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:44,077 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579418883]
[2023-12-25 20:22:44,077 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:44,077 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:44,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:44,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:44,822 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:44,822 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579418883]
[2023-12-25 20:22:44,823 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579418883] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:44,823 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:44,823 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:22:44,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549201725]
[2023-12-25 20:22:44,823 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:44,826 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:22:44,829 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:44,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:22:44,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:22:44,831 INFO  L87              Difference]: Start difference. First operand 4220 states and 7028 transitions. Second operand  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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)
[2023-12-25 20:22:44,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:44,988 INFO  L93              Difference]: Finished difference Result 8322 states and 13859 transitions.
[2023-12-25 20:22:44,989 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 20:22:44,989 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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) Word has length 431
[2023-12-25 20:22:44,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:45,003 INFO  L225             Difference]: With dead ends: 8322
[2023-12-25 20:22:45,004 INFO  L226             Difference]: Without dead ends: 4223
[2023-12-25 20:22:45,011 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:22:45,012 INFO  L413           NwaCegarLoop]: 7023 mSDtfsCounter, 1 mSDsluCounter, 14039 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 21062 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:45,013 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 21062 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:22:45,020 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4223 states.
[2023-12-25 20:22:45,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4223 to 4222.
[2023-12-25 20:22:45,079 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4222 states, 4221 states have (on average 1.6654821132433073) internal successors, (7030), 4221 states have internal predecessors, (7030), 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)
[2023-12-25 20:22:45,090 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4222 states to 4222 states and 7030 transitions.
[2023-12-25 20:22:45,090 INFO  L78                 Accepts]: Start accepts. Automaton has 4222 states and 7030 transitions. Word has length 431
[2023-12-25 20:22:45,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:45,091 INFO  L495      AbstractCegarLoop]: Abstraction has 4222 states and 7030 transitions.
[2023-12-25 20:22:45,091 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 107.75) internal successors, (431), 4 states have internal predecessors, (431), 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)
[2023-12-25 20:22:45,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 4222 states and 7030 transitions.
[2023-12-25 20:22:45,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 433
[2023-12-25 20:22:45,097 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:45,098 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 20:22:45,098 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 20:22:45,098 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:45,099 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:45,099 INFO  L85        PathProgramCache]: Analyzing trace with hash -906171066, now seen corresponding path program 1 times
[2023-12-25 20:22:45,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:45,100 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36069930]
[2023-12-25 20:22:45,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:45,100 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:45,265 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:22:46,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:22:46,001 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:22:46,001 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36069930]
[2023-12-25 20:22:46,002 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36069930] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:22:46,002 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:22:46,002 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:22:46,002 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250501213]
[2023-12-25 20:22:46,002 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:22:46,003 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:22:46,003 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:22:46,004 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:22:46,006 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:22:46,006 INFO  L87              Difference]: Start difference. First operand 4222 states and 7030 transitions. Second operand  has 5 states, 5 states have (on average 86.4) internal successors, (432), 4 states have internal predecessors, (432), 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)
[2023-12-25 20:22:46,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:22:46,335 INFO  L93              Difference]: Finished difference Result 12930 states and 21533 transitions.
[2023-12-25 20:22:46,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:22:46,335 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 86.4) internal successors, (432), 4 states have internal predecessors, (432), 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) Word has length 432
[2023-12-25 20:22:46,336 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:22:46,366 INFO  L225             Difference]: With dead ends: 12930
[2023-12-25 20:22:46,366 INFO  L226             Difference]: Without dead ends: 8829
[2023-12-25 20:22:46,374 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 20:22:46,375 INFO  L413           NwaCegarLoop]: 7877 mSDtfsCounter, 27909 mSDsluCounter, 14040 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27909 SdHoareTripleChecker+Valid, 21917 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:22:46,375 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [27909 Valid, 21917 Invalid, 16 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:22:46,385 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8829 states.
[2023-12-25 20:22:46,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8829 to 4737.
[2023-12-25 20:22:46,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4737 states, 4736 states have (on average 1.6653293918918919) internal successors, (7887), 4736 states have internal predecessors, (7887), 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)
[2023-12-25 20:22:46,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7887 transitions.
[2023-12-25 20:22:46,494 INFO  L78                 Accepts]: Start accepts. Automaton has 4737 states and 7887 transitions. Word has length 432
[2023-12-25 20:22:46,495 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:22:46,495 INFO  L495      AbstractCegarLoop]: Abstraction has 4737 states and 7887 transitions.
[2023-12-25 20:22:46,495 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 86.4) internal successors, (432), 4 states have internal predecessors, (432), 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)
[2023-12-25 20:22:46,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 4737 states and 7887 transitions.
[2023-12-25 20:22:46,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3164
[2023-12-25 20:22:46,693 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:22:46,699 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:22:46,700 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 20:22:46,700 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:22:46,701 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:22:46,701 INFO  L85        PathProgramCache]: Analyzing trace with hash 1636908912, now seen corresponding path program 1 times
[2023-12-25 20:22:46,702 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:22:46,702 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146933802]
[2023-12-25 20:22:46,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:22:46,702 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:22:52,901 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:02,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked.
[2023-12-25 20:23:02,421 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:02,421 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146933802]
[2023-12-25 20:23:02,421 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146933802] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:02,422 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:02,422 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:23:02,422 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118718159]
[2023-12-25 20:23:02,422 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:02,425 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:23:02,425 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:02,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:23:02,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:23:02,435 INFO  L87              Difference]: Start difference. First operand 4737 states and 7887 transitions. Second operand  has 5 states, 5 states have (on average 564.4) internal successors, (2822), 5 states have internal predecessors, (2822), 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)
[2023-12-25 20:23:02,761 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:02,762 INFO  L93              Difference]: Finished difference Result 12935 states and 21538 transitions.
[2023-12-25 20:23:02,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:23:02,764 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 564.4) internal successors, (2822), 5 states have internal predecessors, (2822), 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) Word has length 3163
[2023-12-25 20:23:02,768 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:02,805 INFO  L225             Difference]: With dead ends: 12935
[2023-12-25 20:23:02,805 INFO  L226             Difference]: Without dead ends: 8834
[2023-12-25 20:23:02,811 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:23:02,817 INFO  L413           NwaCegarLoop]: 7878 mSDtfsCounter, 6816 mSDsluCounter, 21707 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6816 SdHoareTripleChecker+Valid, 29585 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:02,818 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6816 Valid, 29585 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:23:02,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8834 states.
[2023-12-25 20:23:02,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8834 to 4737.
[2023-12-25 20:23:02,921 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4737 states, 4736 states have (on average 1.6653293918918919) internal successors, (7887), 4736 states have internal predecessors, (7887), 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)
[2023-12-25 20:23:02,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4737 states to 4737 states and 7887 transitions.
[2023-12-25 20:23:02,937 INFO  L78                 Accepts]: Start accepts. Automaton has 4737 states and 7887 transitions. Word has length 3163
[2023-12-25 20:23:02,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:02,942 INFO  L495      AbstractCegarLoop]: Abstraction has 4737 states and 7887 transitions.
[2023-12-25 20:23:02,943 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 564.4) internal successors, (2822), 5 states have internal predecessors, (2822), 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)
[2023-12-25 20:23:02,943 INFO  L276                IsEmpty]: Start isEmpty. Operand 4737 states and 7887 transitions.
[2023-12-25 20:23:03,007 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3165
[2023-12-25 20:23:03,007 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:03,009 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:23:03,010 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 20:23:03,010 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:03,010 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:03,011 INFO  L85        PathProgramCache]: Analyzing trace with hash 804478048, now seen corresponding path program 1 times
[2023-12-25 20:23:03,011 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:03,011 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349601919]
[2023-12-25 20:23:03,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:03,012 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:06,060 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:13,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-25 20:23:13,019 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:13,019 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349601919]
[2023-12-25 20:23:13,019 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349601919] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:13,019 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:13,019 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:23:13,020 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156446589]
[2023-12-25 20:23:13,020 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:13,022 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:23:13,022 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:13,025 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:23:13,025 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:23:13,026 INFO  L87              Difference]: Start difference. First operand 4737 states and 7887 transitions. Second operand  has 4 states, 4 states have (on average 706.25) internal successors, (2825), 4 states have internal predecessors, (2825), 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)
[2023-12-25 20:23:13,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:13,309 INFO  L93              Difference]: Finished difference Result 12937 states and 21540 transitions.
[2023-12-25 20:23:13,309 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:23:13,311 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 706.25) internal successors, (2825), 4 states have internal predecessors, (2825), 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) Word has length 3164
[2023-12-25 20:23:13,316 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:13,331 INFO  L225             Difference]: With dead ends: 12937
[2023-12-25 20:23:13,331 INFO  L226             Difference]: Without dead ends: 8833
[2023-12-25 20:23:13,336 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:23:13,337 INFO  L413           NwaCegarLoop]: 7873 mSDtfsCounter, 6813 mSDsluCounter, 14887 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6813 SdHoareTripleChecker+Valid, 22760 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:13,337 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6813 Valid, 22760 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:23:13,344 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8833 states.
[2023-12-25 20:23:13,427 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8833 to 4739.
[2023-12-25 20:23:13,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4739 states, 4738 states have (on average 1.6650485436893203) internal successors, (7889), 4738 states have internal predecessors, (7889), 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)
[2023-12-25 20:23:13,440 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 7889 transitions.
[2023-12-25 20:23:13,440 INFO  L78                 Accepts]: Start accepts. Automaton has 4739 states and 7889 transitions. Word has length 3164
[2023-12-25 20:23:13,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:13,443 INFO  L495      AbstractCegarLoop]: Abstraction has 4739 states and 7889 transitions.
[2023-12-25 20:23:13,445 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 706.25) internal successors, (2825), 4 states have internal predecessors, (2825), 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)
[2023-12-25 20:23:13,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 4739 states and 7889 transitions.
[2023-12-25 20:23:13,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3166
[2023-12-25 20:23:13,509 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:13,510 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:23:13,511 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 20:23:13,511 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:13,511 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:13,512 INFO  L85        PathProgramCache]: Analyzing trace with hash 94022412, now seen corresponding path program 1 times
[2023-12-25 20:23:13,512 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:13,512 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738197060]
[2023-12-25 20:23:13,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:13,513 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:16,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:23,947 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked.
[2023-12-25 20:23:23,948 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:23,948 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738197060]
[2023-12-25 20:23:23,948 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738197060] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:23,948 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:23,948 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:23:23,948 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333748904]
[2023-12-25 20:23:23,949 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:23,951 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:23:23,951 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:24,085 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:23:24,085 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:23:24,086 INFO  L87              Difference]: Start difference. First operand 4739 states and 7889 transitions. Second operand  has 4 states, 4 states have (on average 707.0) internal successors, (2828), 4 states have internal predecessors, (2828), 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)
[2023-12-25 20:23:24,310 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:24,310 INFO  L93              Difference]: Finished difference Result 12943 states and 21546 transitions.
[2023-12-25 20:23:24,311 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:23:24,312 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 707.0) internal successors, (2828), 4 states have internal predecessors, (2828), 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) Word has length 3165
[2023-12-25 20:23:24,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:24,337 INFO  L225             Difference]: With dead ends: 12943
[2023-12-25 20:23:24,338 INFO  L226             Difference]: Without dead ends: 8834
[2023-12-25 20:23:24,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:23:24,346 INFO  L413           NwaCegarLoop]: 7868 mSDtfsCounter, 6810 mSDsluCounter, 14882 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6810 SdHoareTripleChecker+Valid, 22750 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:24,346 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6810 Valid, 22750 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:23:24,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8834 states.
[2023-12-25 20:23:24,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8834 to 4741.
[2023-12-25 20:23:24,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4741 states, 4740 states have (on average 1.6647679324894515) internal successors, (7891), 4740 states have internal predecessors, (7891), 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)
[2023-12-25 20:23:24,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4741 states to 4741 states and 7891 transitions.
[2023-12-25 20:23:24,445 INFO  L78                 Accepts]: Start accepts. Automaton has 4741 states and 7891 transitions. Word has length 3165
[2023-12-25 20:23:24,450 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:24,451 INFO  L495      AbstractCegarLoop]: Abstraction has 4741 states and 7891 transitions.
[2023-12-25 20:23:24,452 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 707.0) internal successors, (2828), 4 states have internal predecessors, (2828), 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)
[2023-12-25 20:23:24,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 4741 states and 7891 transitions.
[2023-12-25 20:23:24,584 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3167
[2023-12-25 20:23:24,584 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:24,586 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:23:24,586 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-25 20:23:24,587 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:24,587 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:24,588 INFO  L85        PathProgramCache]: Analyzing trace with hash 294641608, now seen corresponding path program 1 times
[2023-12-25 20:23:24,588 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:24,588 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739702918]
[2023-12-25 20:23:24,588 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:24,589 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:29,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:36,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked.
[2023-12-25 20:23:36,507 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:36,507 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739702918]
[2023-12-25 20:23:36,507 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739702918] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:36,507 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:36,507 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:23:36,508 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507290770]
[2023-12-25 20:23:36,508 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:36,511 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:23:36,511 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:36,513 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:23:36,513 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:23:36,514 INFO  L87              Difference]: Start difference. First operand 4741 states and 7891 transitions. Second operand  has 5 states, 5 states have (on average 566.2) internal successors, (2831), 5 states have internal predecessors, (2831), 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)
[2023-12-25 20:23:36,772 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:36,772 INFO  L93              Difference]: Finished difference Result 12949 states and 21552 transitions.
[2023-12-25 20:23:36,772 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:23:36,774 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 566.2) internal successors, (2831), 5 states have internal predecessors, (2831), 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) Word has length 3166
[2023-12-25 20:23:36,778 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:36,794 INFO  L225             Difference]: With dead ends: 12949
[2023-12-25 20:23:36,794 INFO  L226             Difference]: Without dead ends: 8835
[2023-12-25 20:23:36,801 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:23:36,802 INFO  L413           NwaCegarLoop]: 7863 mSDtfsCounter, 6807 mSDsluCounter, 22737 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6807 SdHoareTripleChecker+Valid, 30600 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:36,802 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6807 Valid, 30600 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:23:36,812 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8835 states.
[2023-12-25 20:23:36,883 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 4743.
[2023-12-25 20:23:36,889 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4743 states, 4742 states have (on average 1.6644875579924083) internal successors, (7893), 4742 states have internal predecessors, (7893), 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)
[2023-12-25 20:23:36,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4743 states to 4743 states and 7893 transitions.
[2023-12-25 20:23:36,898 INFO  L78                 Accepts]: Start accepts. Automaton has 4743 states and 7893 transitions. Word has length 3166
[2023-12-25 20:23:36,902 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:36,902 INFO  L495      AbstractCegarLoop]: Abstraction has 4743 states and 7893 transitions.
[2023-12-25 20:23:36,903 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 566.2) internal successors, (2831), 5 states have internal predecessors, (2831), 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)
[2023-12-25 20:23:36,904 INFO  L276                IsEmpty]: Start isEmpty. Operand 4743 states and 7893 transitions.
[2023-12-25 20:23:36,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3168
[2023-12-25 20:23:36,968 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:36,970 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:23:36,970 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-12-25 20:23:36,970 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:36,971 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:36,971 INFO  L85        PathProgramCache]: Analyzing trace with hash -1297045594, now seen corresponding path program 1 times
[2023-12-25 20:23:36,971 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:36,971 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860654255]
[2023-12-25 20:23:36,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:36,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:23:39,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:23:46,773 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked.
[2023-12-25 20:23:46,773 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:23:46,773 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860654255]
[2023-12-25 20:23:46,773 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860654255] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:23:46,774 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:23:46,774 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:23:46,774 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288408426]
[2023-12-25 20:23:46,774 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:23:46,777 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:23:46,777 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:23:46,780 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:23:46,780 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:23:46,781 INFO  L87              Difference]: Start difference. First operand 4743 states and 7893 transitions. Second operand  has 4 states, 4 states have (on average 708.5) internal successors, (2834), 4 states have internal predecessors, (2834), 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)
[2023-12-25 20:23:47,055 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:23:47,055 INFO  L93              Difference]: Finished difference Result 12955 states and 21558 transitions.
[2023-12-25 20:23:47,056 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:23:47,057 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 708.5) internal successors, (2834), 4 states have internal predecessors, (2834), 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) Word has length 3167
[2023-12-25 20:23:47,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:23:47,109 INFO  L225             Difference]: With dead ends: 12955
[2023-12-25 20:23:47,110 INFO  L226             Difference]: Without dead ends: 8836
[2023-12-25 20:23:47,117 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:23:47,118 INFO  L413           NwaCegarLoop]: 7858 mSDtfsCounter, 6804 mSDsluCounter, 14872 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6804 SdHoareTripleChecker+Valid, 22730 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 20:23:47,118 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6804 Valid, 22730 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 20:23:47,126 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8836 states.
[2023-12-25 20:23:47,264 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8836 to 4745.
[2023-12-25 20:23:47,283 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4745 states, 4744 states have (on average 1.6642074198988195) internal successors, (7895), 4744 states have internal predecessors, (7895), 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)
[2023-12-25 20:23:47,290 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4745 states to 4745 states and 7895 transitions.
[2023-12-25 20:23:47,290 INFO  L78                 Accepts]: Start accepts. Automaton has 4745 states and 7895 transitions. Word has length 3167
[2023-12-25 20:23:47,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:23:47,294 INFO  L495      AbstractCegarLoop]: Abstraction has 4745 states and 7895 transitions.
[2023-12-25 20:23:47,295 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 708.5) internal successors, (2834), 4 states have internal predecessors, (2834), 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)
[2023-12-25 20:23:47,295 INFO  L276                IsEmpty]: Start isEmpty. Operand 4745 states and 7895 transitions.
[2023-12-25 20:23:47,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3169
[2023-12-25 20:23:47,444 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:23:47,446 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:23:47,446 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-12-25 20:23:47,446 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:23:47,447 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:23:47,447 INFO  L85        PathProgramCache]: Analyzing trace with hash -355522514, now seen corresponding path program 1 times
[2023-12-25 20:23:47,448 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:23:47,448 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757514313]
[2023-12-25 20:23:47,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:23:47,448 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:13,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:20,301 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 80 proven. 268 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:25:20,301 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:20,301 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757514313]
[2023-12-25 20:25:20,302 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757514313] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-25 20:25:20,302 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743246790]
[2023-12-25 20:25:20,302 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:20,303 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:25:20,303 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 20:25:20,305 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)
[2023-12-25 20:25:20,309 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 20:25:24,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:24,730 INFO  L262         TraceCheckSpWp]: Trace formula consists of 17890 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 20:25:24,814 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 20:25:25,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 14 proven. 334 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 20:25:25,434 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-25 20:25:25,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked.
[2023-12-25 20:25:25,575 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [743246790] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-25 20:25:25,575 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences.
[2023-12-25 20:25:25,576 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 7] total 13
[2023-12-25 20:25:25,576 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577407199]
[2023-12-25 20:25:25,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:25,580 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:25:25,580 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:25,582 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:25:25,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156
[2023-12-25 20:25:25,583 INFO  L87              Difference]: Start difference. First operand 4745 states and 7895 transitions. Second operand  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 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)
[2023-12-25 20:25:28,227 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:28,227 INFO  L93              Difference]: Finished difference Result 16874 states and 28011 transitions.
[2023-12-25 20:25:28,227 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 20:25:28,228 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 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) Word has length 3168
[2023-12-25 20:25:28,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:28,258 INFO  L225             Difference]: With dead ends: 16874
[2023-12-25 20:25:28,258 INFO  L226             Difference]: Without dead ends: 8837
[2023-12-25 20:25:28,268 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6342 GetRequests, 6329 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182
[2023-12-25 20:25:28,270 INFO  L413           NwaCegarLoop]: 13109 mSDtfsCounter, 19246 mSDsluCounter, 12905 mSDsCounter, 0 mSdLazyCounter, 2951 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19246 SdHoareTripleChecker+Valid, 26014 SdHoareTripleChecker+Invalid, 3144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 2951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:28,270 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19246 Valid, 26014 Invalid, 3144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 2951 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2023-12-25 20:25:28,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8837 states.
[2023-12-25 20:25:28,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8837 to 4747.
[2023-12-25 20:25:28,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4747 states, 4746 states have (on average 1.6639275179098187) internal successors, (7897), 4746 states have internal predecessors, (7897), 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)
[2023-12-25 20:25:28,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4747 states to 4747 states and 7897 transitions.
[2023-12-25 20:25:28,351 INFO  L78                 Accepts]: Start accepts. Automaton has 4747 states and 7897 transitions. Word has length 3168
[2023-12-25 20:25:28,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:28,353 INFO  L495      AbstractCegarLoop]: Abstraction has 4747 states and 7897 transitions.
[2023-12-25 20:25:28,354 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 567.4) internal successors, (2837), 5 states have internal predecessors, (2837), 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)
[2023-12-25 20:25:28,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 4747 states and 7897 transitions.
[2023-12-25 20:25:28,418 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3170
[2023-12-25 20:25:28,418 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:28,419 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:25:28,465 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-12-25 20:25:28,620 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 20:25:28,620 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:28,620 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:28,621 INFO  L85        PathProgramCache]: Analyzing trace with hash 1389558850, now seen corresponding path program 1 times
[2023-12-25 20:25:28,621 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:28,621 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355492610]
[2023-12-25 20:25:28,622 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:28,622 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:31,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:38,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2023-12-25 20:25:38,460 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:38,460 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355492610]
[2023-12-25 20:25:38,460 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355492610] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:38,460 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:38,461 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:25:38,461 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215302413]
[2023-12-25 20:25:38,461 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:38,463 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:25:38,464 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:38,466 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:25:38,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:25:38,466 INFO  L87              Difference]: Start difference. First operand 4747 states and 7897 transitions. Second operand  has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 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)
[2023-12-25 20:25:38,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:38,601 INFO  L93              Difference]: Finished difference Result 12967 states and 21570 transitions.
[2023-12-25 20:25:38,601 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:25:38,602 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 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) Word has length 3169
[2023-12-25 20:25:38,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:38,621 INFO  L225             Difference]: With dead ends: 12967
[2023-12-25 20:25:38,621 INFO  L226             Difference]: Without dead ends: 8838
[2023-12-25 20:25:38,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:25:38,630 INFO  L413           NwaCegarLoop]: 7848 mSDtfsCounter, 6798 mSDsluCounter, 14862 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6798 SdHoareTripleChecker+Valid, 22710 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:38,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6798 Valid, 22710 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:25:38,638 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8838 states.
[2023-12-25 20:25:38,700 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8838 to 4749.
[2023-12-25 20:25:38,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4749 states, 4748 states have (on average 1.663647851727043) internal successors, (7899), 4748 states have internal predecessors, (7899), 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)
[2023-12-25 20:25:38,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4749 states to 4749 states and 7899 transitions.
[2023-12-25 20:25:38,713 INFO  L78                 Accepts]: Start accepts. Automaton has 4749 states and 7899 transitions. Word has length 3169
[2023-12-25 20:25:38,716 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:38,716 INFO  L495      AbstractCegarLoop]: Abstraction has 4749 states and 7899 transitions.
[2023-12-25 20:25:38,717 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 710.0) internal successors, (2840), 4 states have internal predecessors, (2840), 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)
[2023-12-25 20:25:38,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 4749 states and 7899 transitions.
[2023-12-25 20:25:38,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3171
[2023-12-25 20:25:38,781 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:38,783 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:25:38,783 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-12-25 20:25:38,783 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:38,783 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:38,784 INFO  L85        PathProgramCache]: Analyzing trace with hash 1327414422, now seen corresponding path program 1 times
[2023-12-25 20:25:38,784 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:38,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726525571]
[2023-12-25 20:25:38,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:38,785 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:41,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:48,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked.
[2023-12-25 20:25:48,060 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:48,060 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726525571]
[2023-12-25 20:25:48,060 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726525571] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:48,061 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:48,061 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:25:48,061 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575263228]
[2023-12-25 20:25:48,061 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:48,064 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:25:48,064 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:48,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:25:48,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:25:48,068 INFO  L87              Difference]: Start difference. First operand 4749 states and 7899 transitions. Second operand  has 4 states, 4 states have (on average 710.75) internal successors, (2843), 4 states have internal predecessors, (2843), 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)
[2023-12-25 20:25:48,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:48,255 INFO  L93              Difference]: Finished difference Result 12973 states and 21576 transitions.
[2023-12-25 20:25:48,255 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:25:48,256 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 710.75) internal successors, (2843), 4 states have internal predecessors, (2843), 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) Word has length 3170
[2023-12-25 20:25:48,259 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:48,272 INFO  L225             Difference]: With dead ends: 12973
[2023-12-25 20:25:48,272 INFO  L226             Difference]: Without dead ends: 8839
[2023-12-25 20:25:48,278 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:25:48,278 INFO  L413           NwaCegarLoop]: 7843 mSDtfsCounter, 6795 mSDsluCounter, 14857 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6795 SdHoareTripleChecker+Valid, 22700 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:48,278 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6795 Valid, 22700 Invalid, 19 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:25:48,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8839 states.
[2023-12-25 20:25:48,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8839 to 4751.
[2023-12-25 20:25:48,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4751 states, 4750 states have (on average 1.6633684210526316) internal successors, (7901), 4750 states have internal predecessors, (7901), 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)
[2023-12-25 20:25:48,358 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4751 states to 4751 states and 7901 transitions.
[2023-12-25 20:25:48,358 INFO  L78                 Accepts]: Start accepts. Automaton has 4751 states and 7901 transitions. Word has length 3170
[2023-12-25 20:25:48,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:48,361 INFO  L495      AbstractCegarLoop]: Abstraction has 4751 states and 7901 transitions.
[2023-12-25 20:25:48,361 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 710.75) internal successors, (2843), 4 states have internal predecessors, (2843), 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)
[2023-12-25 20:25:48,361 INFO  L276                IsEmpty]: Start isEmpty. Operand 4751 states and 7901 transitions.
[2023-12-25 20:25:48,425 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3172
[2023-12-25 20:25:48,425 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:48,427 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:25:48,427 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-12-25 20:25:48,427 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:48,427 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:48,428 INFO  L85        PathProgramCache]: Analyzing trace with hash -954624804, now seen corresponding path program 1 times
[2023-12-25 20:25:48,429 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:48,429 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744503088]
[2023-12-25 20:25:48,429 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:48,429 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:25:51,173 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:25:58,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked.
[2023-12-25 20:25:58,173 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:25:58,173 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744503088]
[2023-12-25 20:25:58,173 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744503088] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:25:58,173 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:25:58,174 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:25:58,174 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262914549]
[2023-12-25 20:25:58,174 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:25:58,177 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:25:58,177 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:25:58,180 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:25:58,181 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:25:58,181 INFO  L87              Difference]: Start difference. First operand 4751 states and 7901 transitions. Second operand  has 4 states, 4 states have (on average 711.5) internal successors, (2846), 4 states have internal predecessors, (2846), 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)
[2023-12-25 20:25:58,387 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:25:58,388 INFO  L93              Difference]: Finished difference Result 12979 states and 21582 transitions.
[2023-12-25 20:25:58,388 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:25:58,390 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 711.5) internal successors, (2846), 4 states have internal predecessors, (2846), 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) Word has length 3171
[2023-12-25 20:25:58,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:25:58,532 INFO  L225             Difference]: With dead ends: 12979
[2023-12-25 20:25:58,532 INFO  L226             Difference]: Without dead ends: 8840
[2023-12-25 20:25:58,549 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:25:58,550 INFO  L413           NwaCegarLoop]: 7838 mSDtfsCounter, 6792 mSDsluCounter, 14852 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6792 SdHoareTripleChecker+Valid, 22690 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:25:58,550 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6792 Valid, 22690 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:25:58,557 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8840 states.
[2023-12-25 20:25:58,666 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8840 to 4753.
[2023-12-25 20:25:58,688 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4753 states, 4752 states have (on average 1.6630892255892256) internal successors, (7903), 4752 states have internal predecessors, (7903), 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)
[2023-12-25 20:25:58,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4753 states to 4753 states and 7903 transitions.
[2023-12-25 20:25:58,695 INFO  L78                 Accepts]: Start accepts. Automaton has 4753 states and 7903 transitions. Word has length 3171
[2023-12-25 20:25:58,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:25:58,698 INFO  L495      AbstractCegarLoop]: Abstraction has 4753 states and 7903 transitions.
[2023-12-25 20:25:58,698 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 711.5) internal successors, (2846), 4 states have internal predecessors, (2846), 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)
[2023-12-25 20:25:58,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 4753 states and 7903 transitions.
[2023-12-25 20:25:58,782 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3173
[2023-12-25 20:25:58,782 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:25:58,784 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:25:58,784 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2023-12-25 20:25:58,784 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:25:58,784 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:25:58,785 INFO  L85        PathProgramCache]: Analyzing trace with hash 159664380, now seen corresponding path program 1 times
[2023-12-25 20:25:58,785 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:25:58,785 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959925334]
[2023-12-25 20:25:58,786 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:25:58,786 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:02,746 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:09,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked.
[2023-12-25 20:26:09,753 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:09,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959925334]
[2023-12-25 20:26:09,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959925334] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:09,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:09,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:26:09,753 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912698672]
[2023-12-25 20:26:09,753 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:09,756 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:26:09,756 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:09,758 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:26:09,758 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:09,759 INFO  L87              Difference]: Start difference. First operand 4753 states and 7903 transitions. Second operand  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 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)
[2023-12-25 20:26:09,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:09,996 INFO  L93              Difference]: Finished difference Result 12985 states and 21588 transitions.
[2023-12-25 20:26:09,996 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:09,997 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 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) Word has length 3172
[2023-12-25 20:26:09,999 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:10,009 INFO  L225             Difference]: With dead ends: 12985
[2023-12-25 20:26:10,009 INFO  L226             Difference]: Without dead ends: 8841
[2023-12-25 20:26:10,015 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:10,016 INFO  L413           NwaCegarLoop]: 7833 mSDtfsCounter, 6789 mSDsluCounter, 22677 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6789 SdHoareTripleChecker+Valid, 30510 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:10,016 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6789 Valid, 30510 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:10,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8841 states.
[2023-12-25 20:26:10,073 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8841 to 4755.
[2023-12-25 20:26:10,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4755 states, 4754 states have (on average 1.6628102650399663) internal successors, (7905), 4754 states have internal predecessors, (7905), 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)
[2023-12-25 20:26:10,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4755 states to 4755 states and 7905 transitions.
[2023-12-25 20:26:10,082 INFO  L78                 Accepts]: Start accepts. Automaton has 4755 states and 7905 transitions. Word has length 3172
[2023-12-25 20:26:10,084 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:10,084 INFO  L495      AbstractCegarLoop]: Abstraction has 4755 states and 7905 transitions.
[2023-12-25 20:26:10,085 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 569.8) internal successors, (2849), 5 states have internal predecessors, (2849), 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)
[2023-12-25 20:26:10,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 4755 states and 7905 transitions.
[2023-12-25 20:26:10,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3174
[2023-12-25 20:26:10,148 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:10,149 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:10,149 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2023-12-25 20:26:10,150 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:10,150 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:10,151 INFO  L85        PathProgramCache]: Analyzing trace with hash 1749930616, now seen corresponding path program 1 times
[2023-12-25 20:26:10,151 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:10,151 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668578815]
[2023-12-25 20:26:10,152 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:10,152 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:12,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:18,988 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 322 trivial. 0 not checked.
[2023-12-25 20:26:18,988 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:18,988 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668578815]
[2023-12-25 20:26:18,988 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668578815] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:18,988 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:18,988 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:26:18,988 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883745585]
[2023-12-25 20:26:18,989 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:18,991 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:26:18,991 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:18,993 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:26:18,994 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:26:18,994 INFO  L87              Difference]: Start difference. First operand 4755 states and 7905 transitions. Second operand  has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 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)
[2023-12-25 20:26:19,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:19,127 INFO  L93              Difference]: Finished difference Result 12991 states and 21594 transitions.
[2023-12-25 20:26:19,127 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:19,128 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 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) Word has length 3173
[2023-12-25 20:26:19,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:19,142 INFO  L225             Difference]: With dead ends: 12991
[2023-12-25 20:26:19,142 INFO  L226             Difference]: Without dead ends: 8842
[2023-12-25 20:26:19,150 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:19,150 INFO  L413           NwaCegarLoop]: 7828 mSDtfsCounter, 6786 mSDsluCounter, 14842 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6786 SdHoareTripleChecker+Valid, 22670 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:19,151 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6786 Valid, 22670 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:19,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8842 states.
[2023-12-25 20:26:19,213 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8842 to 4757.
[2023-12-25 20:26:19,218 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4757 states, 4756 states have (on average 1.6625315391084945) internal successors, (7907), 4756 states have internal predecessors, (7907), 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)
[2023-12-25 20:26:19,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4757 states to 4757 states and 7907 transitions.
[2023-12-25 20:26:19,223 INFO  L78                 Accepts]: Start accepts. Automaton has 4757 states and 7907 transitions. Word has length 3173
[2023-12-25 20:26:19,225 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:19,226 INFO  L495      AbstractCegarLoop]: Abstraction has 4757 states and 7907 transitions.
[2023-12-25 20:26:19,226 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 713.0) internal successors, (2852), 4 states have internal predecessors, (2852), 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)
[2023-12-25 20:26:19,226 INFO  L276                IsEmpty]: Start isEmpty. Operand 4757 states and 7907 transitions.
[2023-12-25 20:26:19,326 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3175
[2023-12-25 20:26:19,327 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:19,328 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:19,329 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2023-12-25 20:26:19,329 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:19,329 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:19,330 INFO  L85        PathProgramCache]: Analyzing trace with hash 154594916, now seen corresponding path program 1 times
[2023-12-25 20:26:19,330 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:19,330 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767804832]
[2023-12-25 20:26:19,331 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:19,331 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:22,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:28,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked.
[2023-12-25 20:26:28,851 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:28,852 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767804832]
[2023-12-25 20:26:28,852 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767804832] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:28,852 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:28,852 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:26:28,852 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671879100]
[2023-12-25 20:26:28,852 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:28,855 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:26:28,855 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:28,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:26:28,857 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:28,857 INFO  L87              Difference]: Start difference. First operand 4757 states and 7907 transitions. Second operand  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 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)
[2023-12-25 20:26:29,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:29,066 INFO  L93              Difference]: Finished difference Result 12997 states and 21600 transitions.
[2023-12-25 20:26:29,067 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:29,067 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 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) Word has length 3174
[2023-12-25 20:26:29,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:29,089 INFO  L225             Difference]: With dead ends: 12997
[2023-12-25 20:26:29,089 INFO  L226             Difference]: Without dead ends: 8843
[2023-12-25 20:26:29,096 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:29,097 INFO  L413           NwaCegarLoop]: 7823 mSDtfsCounter, 6783 mSDsluCounter, 22657 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6783 SdHoareTripleChecker+Valid, 30480 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:29,097 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6783 Valid, 30480 Invalid, 27 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:29,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8843 states.
[2023-12-25 20:26:29,158 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8843 to 4759.
[2023-12-25 20:26:29,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4759 states, 4758 states have (on average 1.6622530474989492) internal successors, (7909), 4758 states have internal predecessors, (7909), 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)
[2023-12-25 20:26:29,170 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4759 states to 4759 states and 7909 transitions.
[2023-12-25 20:26:29,170 INFO  L78                 Accepts]: Start accepts. Automaton has 4759 states and 7909 transitions. Word has length 3174
[2023-12-25 20:26:29,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:29,172 INFO  L495      AbstractCegarLoop]: Abstraction has 4759 states and 7909 transitions.
[2023-12-25 20:26:29,173 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 571.0) internal successors, (2855), 5 states have internal predecessors, (2855), 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)
[2023-12-25 20:26:29,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 4759 states and 7909 transitions.
[2023-12-25 20:26:29,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3176
[2023-12-25 20:26:29,259 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:29,260 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:29,261 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-12-25 20:26:29,261 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:29,261 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:29,262 INFO  L85        PathProgramCache]: Analyzing trace with hash -1842772206, now seen corresponding path program 1 times
[2023-12-25 20:26:29,262 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:29,262 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908121423]
[2023-12-25 20:26:29,262 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:29,263 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:32,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:38,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 318 trivial. 0 not checked.
[2023-12-25 20:26:38,645 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:38,645 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908121423]
[2023-12-25 20:26:38,645 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908121423] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:38,645 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:38,645 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:26:38,645 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321846985]
[2023-12-25 20:26:38,645 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:38,648 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:26:38,648 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:38,650 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:26:38,650 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:26:38,651 INFO  L87              Difference]: Start difference. First operand 4759 states and 7909 transitions. Second operand  has 4 states, 4 states have (on average 714.5) internal successors, (2858), 4 states have internal predecessors, (2858), 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)
[2023-12-25 20:26:38,763 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:38,764 INFO  L93              Difference]: Finished difference Result 13003 states and 21606 transitions.
[2023-12-25 20:26:38,764 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:38,765 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 714.5) internal successors, (2858), 4 states have internal predecessors, (2858), 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) Word has length 3175
[2023-12-25 20:26:38,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:38,773 INFO  L225             Difference]: With dead ends: 13003
[2023-12-25 20:26:38,773 INFO  L226             Difference]: Without dead ends: 8844
[2023-12-25 20:26:38,776 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:38,777 INFO  L413           NwaCegarLoop]: 7818 mSDtfsCounter, 6780 mSDsluCounter, 14832 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6780 SdHoareTripleChecker+Valid, 22650 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:38,777 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6780 Valid, 22650 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:38,783 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8844 states.
[2023-12-25 20:26:38,823 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8844 to 4761.
[2023-12-25 20:26:38,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4761 states, 4760 states have (on average 1.6619747899159665) internal successors, (7911), 4760 states have internal predecessors, (7911), 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)
[2023-12-25 20:26:38,832 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4761 states to 4761 states and 7911 transitions.
[2023-12-25 20:26:38,832 INFO  L78                 Accepts]: Start accepts. Automaton has 4761 states and 7911 transitions. Word has length 3175
[2023-12-25 20:26:38,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:38,834 INFO  L495      AbstractCegarLoop]: Abstraction has 4761 states and 7911 transitions.
[2023-12-25 20:26:38,835 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 714.5) internal successors, (2858), 4 states have internal predecessors, (2858), 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)
[2023-12-25 20:26:38,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 4761 states and 7911 transitions.
[2023-12-25 20:26:38,956 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3177
[2023-12-25 20:26:38,956 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:38,958 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:38,958 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2023-12-25 20:26:38,958 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:38,958 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:38,959 INFO  L85        PathProgramCache]: Analyzing trace with hash 1490960074, now seen corresponding path program 1 times
[2023-12-25 20:26:38,959 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:38,959 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249352253]
[2023-12-25 20:26:38,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:38,960 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:41,238 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:48,281 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked.
[2023-12-25 20:26:48,281 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:48,281 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249352253]
[2023-12-25 20:26:48,281 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249352253] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:48,282 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:48,282 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 20:26:48,282 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492083157]
[2023-12-25 20:26:48,282 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:48,284 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 20:26:48,285 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:48,287 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 20:26:48,287 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:48,287 INFO  L87              Difference]: Start difference. First operand 4761 states and 7911 transitions. Second operand  has 5 states, 5 states have (on average 572.2) internal successors, (2861), 5 states have internal predecessors, (2861), 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)
[2023-12-25 20:26:48,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:48,425 INFO  L93              Difference]: Finished difference Result 13009 states and 21612 transitions.
[2023-12-25 20:26:48,426 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:48,426 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 572.2) internal successors, (2861), 5 states have internal predecessors, (2861), 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) Word has length 3176
[2023-12-25 20:26:48,428 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:48,435 INFO  L225             Difference]: With dead ends: 13009
[2023-12-25 20:26:48,435 INFO  L226             Difference]: Without dead ends: 8845
[2023-12-25 20:26:48,439 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 20:26:48,440 INFO  L413           NwaCegarLoop]: 7813 mSDtfsCounter, 6777 mSDsluCounter, 21603 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6777 SdHoareTripleChecker+Valid, 29416 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:48,440 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6777 Valid, 29416 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:48,445 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8845 states.
[2023-12-25 20:26:48,484 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8845 to 4763.
[2023-12-25 20:26:48,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4763 states, 4762 states have (on average 1.6616967660646786) internal successors, (7913), 4762 states have internal predecessors, (7913), 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)
[2023-12-25 20:26:48,494 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4763 states to 4763 states and 7913 transitions.
[2023-12-25 20:26:48,494 INFO  L78                 Accepts]: Start accepts. Automaton has 4763 states and 7913 transitions. Word has length 3176
[2023-12-25 20:26:48,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:48,496 INFO  L495      AbstractCegarLoop]: Abstraction has 4763 states and 7913 transitions.
[2023-12-25 20:26:48,497 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 572.2) internal successors, (2861), 5 states have internal predecessors, (2861), 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)
[2023-12-25 20:26:48,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 4763 states and 7913 transitions.
[2023-12-25 20:26:48,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3178
[2023-12-25 20:26:48,648 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:48,650 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:48,650 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2023-12-25 20:26:48,650 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:48,650 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:48,651 INFO  L85        PathProgramCache]: Analyzing trace with hash -525816402, now seen corresponding path program 1 times
[2023-12-25 20:26:48,651 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:48,651 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15298496]
[2023-12-25 20:26:48,652 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:48,652 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:26:50,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:26:57,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked.
[2023-12-25 20:26:57,525 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:26:57,525 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15298496]
[2023-12-25 20:26:57,525 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15298496] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:26:57,525 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:26:57,526 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:26:57,526 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375166830]
[2023-12-25 20:26:57,526 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:26:57,529 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:26:57,529 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:26:57,531 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:26:57,532 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:26:57,532 INFO  L87              Difference]: Start difference. First operand 4763 states and 7913 transitions. Second operand  has 4 states, 4 states have (on average 716.0) internal successors, (2864), 4 states have internal predecessors, (2864), 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)
[2023-12-25 20:26:57,647 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:26:57,647 INFO  L93              Difference]: Finished difference Result 13015 states and 21618 transitions.
[2023-12-25 20:26:57,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:26:57,648 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 716.0) internal successors, (2864), 4 states have internal predecessors, (2864), 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) Word has length 3177
[2023-12-25 20:26:57,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:26:57,656 INFO  L225             Difference]: With dead ends: 13015
[2023-12-25 20:26:57,656 INFO  L226             Difference]: Without dead ends: 8846
[2023-12-25 20:26:57,660 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:26:57,660 INFO  L413           NwaCegarLoop]: 7808 mSDtfsCounter, 6774 mSDsluCounter, 14822 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6774 SdHoareTripleChecker+Valid, 22630 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:26:57,661 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6774 Valid, 22630 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:26:57,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8846 states.
[2023-12-25 20:26:57,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8846 to 4765.
[2023-12-25 20:26:57,706 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4765 states, 4764 states have (on average 1.6614189756507136) internal successors, (7915), 4764 states have internal predecessors, (7915), 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)
[2023-12-25 20:26:57,711 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4765 states to 4765 states and 7915 transitions.
[2023-12-25 20:26:57,711 INFO  L78                 Accepts]: Start accepts. Automaton has 4765 states and 7915 transitions. Word has length 3177
[2023-12-25 20:26:57,712 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:26:57,712 INFO  L495      AbstractCegarLoop]: Abstraction has 4765 states and 7915 transitions.
[2023-12-25 20:26:57,713 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 716.0) internal successors, (2864), 4 states have internal predecessors, (2864), 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)
[2023-12-25 20:26:57,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 4765 states and 7915 transitions.
[2023-12-25 20:26:57,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3179
[2023-12-25 20:26:57,769 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:26:57,770 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:26:57,770 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2023-12-25 20:26:57,770 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:26:57,770 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:26:57,771 INFO  L85        PathProgramCache]: Analyzing trace with hash -941361870, now seen corresponding path program 1 times
[2023-12-25 20:26:57,771 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:26:57,771 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787610964]
[2023-12-25 20:26:57,772 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:26:57,772 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 20:27:00,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 20:27:06,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 348 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked.
[2023-12-25 20:27:06,681 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 20:27:06,682 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787610964]
[2023-12-25 20:27:06,682 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787610964] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 20:27:06,683 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 20:27:06,683 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 20:27:06,683 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857652903]
[2023-12-25 20:27:06,683 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 20:27:06,685 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 20:27:06,685 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 20:27:06,687 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 20:27:06,687 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 20:27:06,687 INFO  L87              Difference]: Start difference. First operand 4765 states and 7915 transitions. Second operand  has 4 states, 4 states have (on average 716.75) internal successors, (2867), 4 states have internal predecessors, (2867), 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)
[2023-12-25 20:27:06,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 20:27:06,802 INFO  L93              Difference]: Finished difference Result 13021 states and 21624 transitions.
[2023-12-25 20:27:06,802 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-25 20:27:06,803 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 716.75) internal successors, (2867), 4 states have internal predecessors, (2867), 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) Word has length 3178
[2023-12-25 20:27:06,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 20:27:06,812 INFO  L225             Difference]: With dead ends: 13021
[2023-12-25 20:27:06,812 INFO  L226             Difference]: Without dead ends: 8847
[2023-12-25 20:27:06,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 20:27:06,817 INFO  L413           NwaCegarLoop]: 7803 mSDtfsCounter, 6771 mSDsluCounter, 14817 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6771 SdHoareTripleChecker+Valid, 22620 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-25 20:27:06,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6771 Valid, 22620 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-25 20:27:06,823 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8847 states.
[2023-12-25 20:27:06,861 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8847 to 4767.
[2023-12-25 20:27:06,864 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4767 states, 4766 states have (on average 1.6611414183801931) internal successors, (7917), 4766 states have internal predecessors, (7917), 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)
[2023-12-25 20:27:06,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4767 states to 4767 states and 7917 transitions.
[2023-12-25 20:27:06,868 INFO  L78                 Accepts]: Start accepts. Automaton has 4767 states and 7917 transitions. Word has length 3178
[2023-12-25 20:27:06,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 20:27:06,870 INFO  L495      AbstractCegarLoop]: Abstraction has 4767 states and 7917 transitions.
[2023-12-25 20:27:06,871 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 716.75) internal successors, (2867), 4 states have internal predecessors, (2867), 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)
[2023-12-25 20:27:06,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 4767 states and 7917 transitions.
[2023-12-25 20:27:06,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3180
[2023-12-25 20:27:06,924 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 20:27:06,925 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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[2023-12-25 20:27:06,925 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2023-12-25 20:27:06,925 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 20:27:06,925 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 20:27:06,926 INFO  L85        PathProgramCache]: Analyzing trace with hash -528613816, now seen corresponding path program 1 times
[2023-12-25 20:27:06,926 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 20:27:06,926 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598558320]
[2023-12-25 20:27:06,926 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 20:27:06,927 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms