/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem07_label39.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-20 16:02:40,116 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-20 16:02:40,179 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-20 16:02:40,183 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-20 16:02:40,183 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-20 16:02:40,210 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-20 16:02:40,211 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-20 16:02:40,211 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-20 16:02:40,211 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-20 16:02:40,214 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-20 16:02:40,215 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-20 16:02:40,215 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-20 16:02:40,216 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-20 16:02:40,217 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-20 16:02:40,217 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-20 16:02:40,217 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-20 16:02:40,217 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-20 16:02:40,217 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-20 16:02:40,218 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-20 16:02:40,218 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-20 16:02:40,218 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-20 16:02:40,218 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-20 16:02:40,218 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-20 16:02:40,219 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-20 16:02:40,219 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-20 16:02:40,219 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-20 16:02:40,219 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-20 16:02:40,219 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-20 16:02:40,220 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-20 16:02:40,220 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 16:02:40,221 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-20 16:02:40,221 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-20 16:02:40,222 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false
[2023-12-20 16:02:40,422 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-20 16:02:40,455 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-20 16:02:40,456 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-20 16:02:40,457 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-20 16:02:40,459 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-20 16:02:40,460 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem07_label39.c
[2023-12-20 16:02:41,475 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-20 16:02:42,790 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-20 16:02:42,791 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem07_label39.c
[2023-12-20 16:02:42,887 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/959573596/ded1bcbabed24f8b9dc2a9b67d2942b7/FLAGb110e0f8e
[2023-12-20 16:02:42,897 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/959573596/ded1bcbabed24f8b9dc2a9b67d2942b7
[2023-12-20 16:02:42,899 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-20 16:02:42,900 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-20 16:02:42,901 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-20 16:02:42,901 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-20 16:02:42,904 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-20 16:02:42,905 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:02:42" (1/1) ...
[2023-12-20 16:02:42,906 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e06a9f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:42, skipping insertion in model container
[2023-12-20 16:02:42,906 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.12 04:02:42" (1/1) ...
[2023-12-20 16:02:43,514 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-20 16:02:50,289 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem07_label39.c[2767623,2767636]
[2023-12-20 16:02:50,337 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 16:02:50,344 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-20 16:02:54,173 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem07_label39.c[2767623,2767636]
[2023-12-20 16:02:54,182 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-20 16:02:55,047 INFO  L206         MainTranslator]: Completed translation
[2023-12-20 16:02:55,047 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55 WrapperNode
[2023-12-20 16:02:55,048 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-20 16:02:55,049 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-20 16:02:55,049 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-20 16:02:55,049 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-20 16:02:55,067 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:55,785 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:57,876 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83819
[2023-12-20 16:02:57,876 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-20 16:02:57,877 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-20 16:02:57,877 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-20 16:02:57,877 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-20 16:02:57,884 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:57,885 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:58,206 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:58,567 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].
[2023-12-20 16:02:58,567 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:58,567 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:59,325 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:59,477 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:59,561 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:02:59,639 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:03:00,017 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-20 16:03:00,018 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-20 16:03:00,018 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-20 16:03:00,018 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-20 16:03:00,018 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (1/1) ...
[2023-12-20 16:03:00,025 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-20 16:03:00,034 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-20 16:03:00,065 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)
[2023-12-20 16:03:00,066 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
[2023-12-20 16:03:00,090 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-20 16:03:00,090 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-20 16:03:00,091 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-20 16:03:00,091 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-20 16:03:00,221 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-20 16:03:00,222 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-20 16:03:32,556 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-20 16:03:32,684 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-20 16:03:32,684 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-20 16:03:32,684 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:03:32 BoogieIcfgContainer
[2023-12-20 16:03:32,684 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-20 16:03:32,687 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-20 16:03:32,687 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-20 16:03:32,690 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-20 16:03:32,690 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.12 04:02:42" (1/3) ...
[2023-12-20 16:03:32,691 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:03:32, skipping insertion in model container
[2023-12-20 16:03:32,691 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.12 04:02:55" (2/3) ...
[2023-12-20 16:03:32,691 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a51dc08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.12 04:03:32, skipping insertion in model container
[2023-12-20 16:03:32,691 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.12 04:03:32" (3/3) ...
[2023-12-20 16:03:32,692 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label39.c
[2023-12-20 16:03:32,704 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-20 16:03:32,704 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-20 16:03:32,829 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-20 16:03:32,834 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;@295b1488, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-20 16:03:32,834 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-20 16:03:32,863 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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)
[2023-12-20 16:03:33,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2023-12-20 16:03:33,565 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:03:33,569 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, 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[2023-12-20 16:03:33,570 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:03:33,579 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:03:33,582 INFO  L85        PathProgramCache]: Analyzing trace with hash -250727381, now seen corresponding path program 1 times
[2023-12-20 16:03:33,590 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:03:33,590 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634968352]
[2023-12-20 16:03:33,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:03:33,593 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:03:36,057 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:03:55,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:03:55,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:03:55,929 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634968352]
[2023-12-20 16:03:55,930 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634968352] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:03:55,930 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:03:55,931 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:03:55,932 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367341674]
[2023-12-20 16:03:55,933 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:03:55,973 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-20 16:03:55,974 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:03:56,046 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-20 16:03:56,046 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 16:03:56,112 INFO  L87              Difference]: Start difference. First operand  has 10195 states, 10193 states have (on average 1.9952908859020897) internal successors, (20338), 10194 states have internal predecessors, (20338), 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 2 states, 2 states have (on average 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-12-20 16:03:56,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:03:56,480 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-12-20 16:03:56,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-20 16:03:56,502 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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 10090
[2023-12-20 16:03:56,515 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:03:56,610 INFO  L225             Difference]: With dead ends: 20389
[2023-12-20 16:03:56,610 INFO  L226             Difference]: Without dead ends: 10193
[2023-12-20 16:03:56,645 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-20 16:03:56,647 INFO  L413           NwaCegarLoop]: 20273 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20273 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-20 16:03:56,647 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-20 16:03:56,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-12-20 16:03:56,875 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-12-20 16:03:56,920 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10193 states, 10192 states have (on average 1.9891091051805339) internal successors, (20273), 10192 states have internal predecessors, (20273), 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)
[2023-12-20 16:03:56,944 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-12-20 16:03:56,945 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10090
[2023-12-20 16:03:56,954 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:03:56,954 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-12-20 16:03:56,959 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5045.0) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-12-20 16:03:56,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-12-20 16:03:57,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10091
[2023-12-20 16:03:57,679 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:03:57,683 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 16:03:57,683 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-20 16:03:57,684 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:03:57,684 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:03:57,687 INFO  L85        PathProgramCache]: Analyzing trace with hash -793486727, now seen corresponding path program 1 times
[2023-12-20 16:03:57,687 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:03:57,688 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260387585]
[2023-12-20 16:03:57,690 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:03:57,691 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:04:00,073 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:04:20,423 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:04:20,424 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:04:20,424 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260387585]
[2023-12-20 16:04:20,424 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260387585] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:04:20,425 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:04:20,426 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:04:20,426 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579341375]
[2023-12-20 16:04:20,426 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:04:20,434 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:04:20,441 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:04:20,448 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:04:20,449 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:04:20,452 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-12-20 16:04:50,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:04:50,891 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-12-20 16:04:50,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 16:04:50,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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 10090
[2023-12-20 16:04:50,909 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:04:50,969 INFO  L225             Difference]: With dead ends: 30575
[2023-12-20 16:04:50,969 INFO  L226             Difference]: Without dead ends: 20383
[2023-12-20 16:04:50,980 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:04:50,981 INFO  L413           NwaCegarLoop]: 4811 mSDtfsCounter, 3104 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29516 mSolverCounterSat, 11203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3104 SdHoareTripleChecker+Valid, 4861 SdHoareTripleChecker+Invalid, 40719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11203 IncrementalHoareTripleChecker+Valid, 29516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time
[2023-12-20 16:04:50,981 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [3104 Valid, 4861 Invalid, 40719 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11203 Valid, 29516 Invalid, 0 Unknown, 0 Unchecked, 29.8s Time]
[2023-12-20 16:04:51,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-12-20 16:04:51,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-12-20 16:04:51,316 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.7563045824747325) internal successors, (35797), 20382 states have internal predecessors, (35797), 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)
[2023-12-20 16:04:51,350 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 35797 transitions.
[2023-12-20 16:04:51,350 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 35797 transitions. Word has length 10090
[2023-12-20 16:04:51,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:04:51,360 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 35797 transitions.
[2023-12-20 16:04:51,363 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3363.3333333333335) internal successors, (10090), 2 states have internal predecessors, (10090), 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)
[2023-12-20 16:04:51,363 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 35797 transitions.
[2023-12-20 16:04:52,031 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10097
[2023-12-20 16:04:52,031 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:04:52,047 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 16:04:52,047 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-20 16:04:52,047 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:04:52,048 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:04:52,050 INFO  L85        PathProgramCache]: Analyzing trace with hash 790461206, now seen corresponding path program 1 times
[2023-12-20 16:04:52,050 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:04:52,050 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279476717]
[2023-12-20 16:04:52,051 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:04:52,051 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:04:53,076 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:05:11,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:05:11,343 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:05:11,344 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279476717]
[2023-12-20 16:05:11,344 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279476717] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:05:11,344 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:05:11,350 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:05:11,351 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518238738]
[2023-12-20 16:05:11,351 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:05:11,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:05:11,357 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:05:11,365 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:05:11,367 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:05:11,374 INFO  L87              Difference]: Start difference. First operand 20383 states and 35797 transitions. Second operand  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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)
[2023-12-20 16:05:41,670 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:05:41,671 INFO  L93              Difference]: Finished difference Result 61145 states and 107388 transitions.
[2023-12-20 16:05:41,671 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 16:05:41,673 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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 10096
[2023-12-20 16:05:41,673 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:05:41,733 INFO  L225             Difference]: With dead ends: 61145
[2023-12-20 16:05:41,733 INFO  L226             Difference]: Without dead ends: 40763
[2023-12-20 16:05:41,755 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:05:41,756 INFO  L413           NwaCegarLoop]: 4817 mSDtfsCounter, 13685 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 28826 mSolverCounterSat, 11677 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13685 SdHoareTripleChecker+Valid, 4866 SdHoareTripleChecker+Invalid, 40503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11677 IncrementalHoareTripleChecker+Valid, 28826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.6s IncrementalHoareTripleChecker+Time
[2023-12-20 16:05:41,757 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13685 Valid, 4866 Invalid, 40503 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11677 Valid, 28826 Invalid, 0 Unknown, 0 Unchecked, 29.6s Time]
[2023-12-20 16:05:41,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-12-20 16:05:42,185 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-12-20 16:05:42,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.578529022128453) internal successors, (64344), 40762 states have internal predecessors, (64344), 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)
[2023-12-20 16:05:42,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 64344 transitions.
[2023-12-20 16:05:42,268 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 64344 transitions. Word has length 10096
[2023-12-20 16:05:42,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:05:42,272 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 64344 transitions.
[2023-12-20 16:05:42,274 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3365.3333333333335) internal successors, (10096), 2 states have internal predecessors, (10096), 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)
[2023-12-20 16:05:42,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 64344 transitions.
[2023-12-20 16:05:42,927 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10125
[2023-12-20 16:05:42,928 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:05:42,931 INFO  L195           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-20 16:05:42,931 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-20 16:05:42,931 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:05:42,931 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:05:42,933 INFO  L85        PathProgramCache]: Analyzing trace with hash 211803690, now seen corresponding path program 1 times
[2023-12-20 16:05:42,933 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:05:42,933 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039347951]
[2023-12-20 16:05:42,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:05:42,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:05:44,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:06:05,765 INFO  L134       CoverageAnalysis]: Checked inductivity of 38 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-12-20 16:06:05,768 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:06:05,768 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039347951]
[2023-12-20 16:06:05,771 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039347951] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:06:05,771 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:06:05,772 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:06:05,772 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279006279]
[2023-12-20 16:06:05,772 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:06:05,792 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:06:05,792 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:06:05,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:06:05,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:06:05,803 INFO  L87              Difference]: Start difference. First operand 40763 states and 64344 transitions. Second operand  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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)
[2023-12-20 16:06:37,712 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:06:37,712 INFO  L93              Difference]: Finished difference Result 122285 states and 193029 transitions.
[2023-12-20 16:06:37,712 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 16:06:37,714 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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 10124
[2023-12-20 16:06:37,714 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:06:37,852 INFO  L225             Difference]: With dead ends: 122285
[2023-12-20 16:06:37,852 INFO  L226             Difference]: Without dead ends: 81523
[2023-12-20 16:06:37,875 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:06:37,876 INFO  L413           NwaCegarLoop]: 9507 mSDtfsCounter, 10242 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 32554 mSolverCounterSat, 9364 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10242 SdHoareTripleChecker+Valid, 9557 SdHoareTripleChecker+Invalid, 41918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9364 IncrementalHoareTripleChecker+Valid, 32554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time
[2023-12-20 16:06:37,876 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10242 Valid, 9557 Invalid, 41918 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9364 Valid, 32554 Invalid, 0 Unknown, 0 Unchecked, 31.0s Time]
[2023-12-20 16:06:37,945 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-12-20 16:06:38,668 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-12-20 16:06:38,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.3586025858050588) internal successors, (110756), 81522 states have internal predecessors, (110756), 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)
[2023-12-20 16:06:39,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 110756 transitions.
[2023-12-20 16:06:39,089 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 110756 transitions. Word has length 10124
[2023-12-20 16:06:39,090 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:06:39,090 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 110756 transitions.
[2023-12-20 16:06:39,092 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3373.0) internal successors, (10119), 2 states have internal predecessors, (10119), 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)
[2023-12-20 16:06:39,093 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 110756 transitions.
[2023-12-20 16:06:39,898 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10128
[2023-12-20 16:06:39,898 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:06:39,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 16:06:39,901 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-20 16:06:39,901 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:06:39,902 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:06:39,904 INFO  L85        PathProgramCache]: Analyzing trace with hash -265095119, now seen corresponding path program 1 times
[2023-12-20 16:06:39,904 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:06:39,904 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267562074]
[2023-12-20 16:06:39,905 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:06:39,905 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:06:40,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:06:59,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:06:59,923 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:06:59,923 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267562074]
[2023-12-20 16:06:59,925 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267562074] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:06:59,927 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:06:59,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:06:59,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970086287]
[2023-12-20 16:06:59,930 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:06:59,936 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:06:59,936 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:06:59,945 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:06:59,945 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:06:59,950 INFO  L87              Difference]: Start difference. First operand 81523 states and 110756 transitions. Second operand  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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)
[2023-12-20 16:07:31,549 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:07:31,549 INFO  L93              Difference]: Finished difference Result 244565 states and 332265 transitions.
[2023-12-20 16:07:31,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 16:07:31,551 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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 10127
[2023-12-20 16:07:31,552 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:07:31,790 INFO  L225             Difference]: With dead ends: 244565
[2023-12-20 16:07:31,790 INFO  L226             Difference]: Without dead ends: 163043
[2023-12-20 16:07:31,831 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:07:31,831 INFO  L413           NwaCegarLoop]: 7743 mSDtfsCounter, 12088 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27827 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12088 SdHoareTripleChecker+Valid, 7792 SdHoareTripleChecker+Invalid, 40857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27827 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time
[2023-12-20 16:07:31,832 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12088 Valid, 7792 Invalid, 40857 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27827 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time]
[2023-12-20 16:07:31,942 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-12-20 16:07:33,220 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-12-20 16:07:33,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.2584732768243765) internal successors, (205184), 163042 states have internal predecessors, (205184), 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)
[2023-12-20 16:07:33,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 205184 transitions.
[2023-12-20 16:07:33,496 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 205184 transitions. Word has length 10127
[2023-12-20 16:07:33,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:07:33,497 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 205184 transitions.
[2023-12-20 16:07:33,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3375.6666666666665) internal successors, (10127), 2 states have internal predecessors, (10127), 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)
[2023-12-20 16:07:33,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 205184 transitions.
[2023-12-20 16:07:34,636 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10160
[2023-12-20 16:07:34,636 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:07:34,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-20 16:07:34,639 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-20 16:07:34,639 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:07:34,639 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:07:34,641 INFO  L85        PathProgramCache]: Analyzing trace with hash 2140806785, now seen corresponding path program 1 times
[2023-12-20 16:07:34,641 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:07:34,641 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887923276]
[2023-12-20 16:07:34,642 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:07:34,642 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:07:35,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:07:53,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 68 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:07:53,104 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:07:53,104 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887923276]
[2023-12-20 16:07:53,104 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887923276] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:07:53,104 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:07:53,105 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:07:53,105 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666840400]
[2023-12-20 16:07:53,105 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:07:53,113 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:07:53,113 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:07:53,124 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:07:53,124 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:07:53,127 INFO  L87              Difference]: Start difference. First operand 163043 states and 205184 transitions. Second operand  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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)
[2023-12-20 16:08:25,528 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-20 16:08:25,529 INFO  L93              Difference]: Finished difference Result 489125 states and 615549 transitions.
[2023-12-20 16:08:25,529 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-20 16:08:25,531 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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 10159
[2023-12-20 16:08:25,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-20 16:08:25,999 INFO  L225             Difference]: With dead ends: 489125
[2023-12-20 16:08:26,000 INFO  L226             Difference]: Without dead ends: 326083
[2023-12-20 16:08:26,090 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:08:26,091 INFO  L413           NwaCegarLoop]: 6786 mSDtfsCounter, 12407 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29267 mSolverCounterSat, 11755 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12407 SdHoareTripleChecker+Valid, 6835 SdHoareTripleChecker+Invalid, 41022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11755 IncrementalHoareTripleChecker+Valid, 29267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time
[2023-12-20 16:08:26,092 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12407 Valid, 6835 Invalid, 41022 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11755 Valid, 29267 Invalid, 0 Unknown, 0 Unchecked, 30.3s Time]
[2023-12-20 16:08:26,300 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326083 states.
[2023-12-20 16:08:29,000 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326083 to 326083.
[2023-12-20 16:08:29,157 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326083 states, 326082 states have (on average 1.1961531148606792) internal successors, (390044), 326082 states have internal predecessors, (390044), 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)
[2023-12-20 16:08:29,789 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326083 states to 326083 states and 390044 transitions.
[2023-12-20 16:08:29,789 INFO  L78                 Accepts]: Start accepts. Automaton has 326083 states and 390044 transitions. Word has length 10159
[2023-12-20 16:08:29,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-20 16:08:29,790 INFO  L495      AbstractCegarLoop]: Abstraction has 326083 states and 390044 transitions.
[2023-12-20 16:08:29,792 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3386.3333333333335) internal successors, (10159), 2 states have internal predecessors, (10159), 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)
[2023-12-20 16:08:29,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 326083 states and 390044 transitions.
[2023-12-20 16:08:30,790 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10278
[2023-12-20 16:08:30,791 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-20 16:08:30,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2023-12-20 16:08:30,792 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-20 16:08:30,793 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-20 16:08:30,793 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-20 16:08:30,794 INFO  L85        PathProgramCache]: Analyzing trace with hash -1680760376, now seen corresponding path program 1 times
[2023-12-20 16:08:30,794 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-20 16:08:30,794 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210814579]
[2023-12-20 16:08:30,794 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-20 16:08:30,795 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-20 16:08:31,921 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-20 16:08:49,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-20 16:08:49,841 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-20 16:08:49,841 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210814579]
[2023-12-20 16:08:49,841 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210814579] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-20 16:08:49,841 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-20 16:08:49,841 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-20 16:08:49,842 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234947157]
[2023-12-20 16:08:49,845 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-20 16:08:49,850 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-20 16:08:49,850 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-20 16:08:49,855 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-20 16:08:49,856 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-20 16:08:49,857 INFO  L87              Difference]: Start difference. First operand 326083 states and 390044 transitions. Second operand  has 3 states, 3 states have (on average 3425.6666666666665) internal successors, (10277), 2 states have internal predecessors, (10277), 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)