/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 true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/eca-rers2012/Problem07_label15.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-19 02:46:07,804 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-19 02:46:07,853 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2023-12-19 02:46:07,855 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-19 02:46:07,856 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-19 02:46:07,883 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-19 02:46:07,884 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-19 02:46:07,884 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-19 02:46:07,885 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-19 02:46:07,888 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-19 02:46:07,888 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-19 02:46:07,888 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-19 02:46:07,888 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-19 02:46:07,889 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-19 02:46:07,889 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-19 02:46:07,890 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-19 02:46:07,890 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-19 02:46:07,890 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-19 02:46:07,890 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-19 02:46:07,890 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-19 02:46:07,890 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-19 02:46:07,891 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-19 02:46:07,892 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-19 02:46:07,892 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-19 02:46:07,892 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-19 02:46:07,893 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-19 02:46:07,893 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-19 02:46:07,893 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 02:46:07,893 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-19 02:46:07,893 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-19 02:46:07,894 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-19 02:46:07,895 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-19 02:46:08,068 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-19 02:46:08,081 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-19 02:46:08,083 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-19 02:46:08,084 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-19 02:46:08,084 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-19 02:46:08,085 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem07_label15.c
[2023-12-19 02:46:09,069 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-19 02:46:10,181 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-19 02:46:10,182 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem07_label15.c
[2023-12-19 02:46:10,309 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b290f77/678856ca7dfb413c9bb315bf94c9eb9b/FLAGd0baa0d0a
[2023-12-19 02:46:10,319 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b3b290f77/678856ca7dfb413c9bb315bf94c9eb9b
[2023-12-19 02:46:10,321 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-19 02:46:10,322 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-19 02:46:10,322 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-19 02:46:10,323 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-19 02:46:10,327 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-19 02:46:10,328 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:10" (1/1) ...
[2023-12-19 02:46:10,329 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cbb66b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:10, skipping insertion in model container
[2023-12-19 02:46:10,329 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.12 02:46:10" (1/1) ...
[2023-12-19 02:46:10,903 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-19 02:46:17,900 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_label15.c[2770861,2770874]
[2023-12-19 02:46:17,948 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 02:46:17,959 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-19 02:46:22,430 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_label15.c[2770861,2770874]
[2023-12-19 02:46:22,437 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-19 02:46:23,219 INFO  L206         MainTranslator]: Completed translation
[2023-12-19 02:46:23,220 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23 WrapperNode
[2023-12-19 02:46:23,220 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-19 02:46:23,221 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-19 02:46:23,221 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-19 02:46:23,221 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-19 02:46:23,225 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:23,875 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:26,032 INFO  L138                Inliner]: procedures = 59, calls = 53, calls flagged for inlining = 48, calls inlined = 48, statements flattened = 83819
[2023-12-19 02:46:26,036 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-19 02:46:26,036 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-19 02:46:26,037 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-19 02:46:26,037 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-19 02:46:26,045 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:26,045 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:26,488 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:26,743 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].
[2023-12-19 02:46:26,744 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:26,744 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:27,715 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:27,860 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:27,942 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:28,034 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:28,399 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-19 02:46:28,400 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-19 02:46:28,400 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-19 02:46:28,400 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-19 02:46:28,400 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (1/1) ...
[2023-12-19 02:46:28,411 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-19 02:46:28,418 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-19 02:46:28,458 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)
[2023-12-19 02:46:28,478 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
[2023-12-19 02:46:28,483 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-19 02:46:28,483 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-19 02:46:28,483 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-19 02:46:28,484 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-19 02:46:28,616 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-19 02:46:28,617 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-19 02:47:00,478 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-19 02:47:00,594 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-19 02:47:00,594 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-19 02:47:00,595 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:47:00 BoogieIcfgContainer
[2023-12-19 02:47:00,595 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-19 02:47:00,596 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-19 02:47:00,597 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-19 02:47:00,599 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-19 02:47:00,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.12 02:46:10" (1/3) ...
[2023-12-19 02:47:00,599 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a3b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:47:00, skipping insertion in model container
[2023-12-19 02:47:00,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.12 02:46:23" (2/3) ...
[2023-12-19 02:47:00,599 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34a3b51b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.12 02:47:00, skipping insertion in model container
[2023-12-19 02:47:00,599 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.12 02:47:00" (3/3) ...
[2023-12-19 02:47:00,600 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem07_label15.c
[2023-12-19 02:47:00,611 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-19 02:47:00,611 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-19 02:47:00,808 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-19 02:47:00,812 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;@620fe206, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-19 02:47:00,813 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-19 02:47:00,840 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)
[2023-12-19 02:47:01,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10110
[2023-12-19 02:47:01,488 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:47:01,492 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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[2023-12-19 02:47:01,493 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:47:01,502 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:47:01,506 INFO  L85        PathProgramCache]: Analyzing trace with hash -1834942107, now seen corresponding path program 1 times
[2023-12-19 02:47:01,512 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:47:01,512 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424381197]
[2023-12-19 02:47:01,514 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:47:01,514 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:47:03,557 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:47:23,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:47:23,593 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:47:23,593 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424381197]
[2023-12-19 02:47:23,594 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424381197] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:47:23,594 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:47:23,594 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:47:23,596 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24599613]
[2023-12-19 02:47:23,596 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:47:23,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-19 02:47:23,634 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:47:23,700 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-19 02:47:23,701 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-19 02:47:23,738 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 5054.5) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2023-12-19 02:47:24,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:47:24,181 INFO  L93              Difference]: Finished difference Result 20389 states and 40675 transitions.
[2023-12-19 02:47:24,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-19 02:47:24,206 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 5054.5) internal successors, (10109), 2 states have internal predecessors, (10109), 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 10109
[2023-12-19 02:47:24,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:47:24,305 INFO  L225             Difference]: With dead ends: 20389
[2023-12-19 02:47:24,305 INFO  L226             Difference]: Without dead ends: 10193
[2023-12-19 02:47:24,332 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
[2023-12-19 02:47:24,336 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, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-19 02:47:24,344 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20273 Invalid, 2 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-19 02:47:24,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10193 states.
[2023-12-19 02:47:24,673 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10193 to 10193.
[2023-12-19 02:47:24,714 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)
[2023-12-19 02:47:24,738 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10193 states to 10193 states and 20273 transitions.
[2023-12-19 02:47:24,739 INFO  L78                 Accepts]: Start accepts. Automaton has 10193 states and 20273 transitions. Word has length 10109
[2023-12-19 02:47:24,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:47:24,761 INFO  L495      AbstractCegarLoop]: Abstraction has 10193 states and 20273 transitions.
[2023-12-19 02:47:24,776 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 5054.5) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2023-12-19 02:47:24,776 INFO  L276                IsEmpty]: Start isEmpty. Operand 10193 states and 20273 transitions.
[2023-12-19 02:47:25,583 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10110
[2023-12-19 02:47:25,584 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:47:25,587 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 02:47:25,587 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-19 02:47:25,588 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:47:25,588 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:47:25,591 INFO  L85        PathProgramCache]: Analyzing trace with hash 1983505330, now seen corresponding path program 1 times
[2023-12-19 02:47:25,591 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:47:25,592 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494305440]
[2023-12-19 02:47:25,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:47:25,594 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:47:27,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:47:53,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:47:53,730 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:47:53,730 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494305440]
[2023-12-19 02:47:53,730 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494305440] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:47:53,730 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:47:53,731 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:47:53,731 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125687484]
[2023-12-19 02:47:53,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:47:53,758 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:47:53,762 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:47:53,769 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:47:53,770 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:47:53,774 INFO  L87              Difference]: Start difference. First operand 10193 states and 20273 transitions. Second operand  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2023-12-19 02:48:26,110 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:48:26,111 INFO  L93              Difference]: Finished difference Result 30575 states and 60816 transitions.
[2023-12-19 02:48:26,111 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 02:48:26,125 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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 10109
[2023-12-19 02:48:26,138 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:48:26,194 INFO  L225             Difference]: With dead ends: 30575
[2023-12-19 02:48:26,194 INFO  L226             Difference]: Without dead ends: 20383
[2023-12-19 02:48:26,201 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
[2023-12-19 02:48:26,202 INFO  L413           NwaCegarLoop]: 7699 mSDtfsCounter, 384 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 31106 mSolverCounterSat, 9500 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 7749 SdHoareTripleChecker+Invalid, 40606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9500 IncrementalHoareTripleChecker+Valid, 31106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.7s IncrementalHoareTripleChecker+Time
[2023-12-19 02:48:26,203 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 7749 Invalid, 40606 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9500 Valid, 31106 Invalid, 0 Unknown, 0 Unchecked, 31.7s Time]
[2023-12-19 02:48:26,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20383 states.
[2023-12-19 02:48:26,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20383 to 20383.
[2023-12-19 02:48:26,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 20383 states, 20382 states have (on average 1.6155921891865372) internal successors, (32929), 20382 states have internal predecessors, (32929), 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)
[2023-12-19 02:48:26,552 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20383 states to 20383 states and 32929 transitions.
[2023-12-19 02:48:26,553 INFO  L78                 Accepts]: Start accepts. Automaton has 20383 states and 32929 transitions. Word has length 10109
[2023-12-19 02:48:26,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:48:26,563 INFO  L495      AbstractCegarLoop]: Abstraction has 20383 states and 32929 transitions.
[2023-12-19 02:48:26,566 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3369.6666666666665) internal successors, (10109), 2 states have internal predecessors, (10109), 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)
[2023-12-19 02:48:26,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 20383 states and 32929 transitions.
[2023-12-19 02:48:27,274 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10114
[2023-12-19 02:48:27,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:48:27,278 INFO  L195           NwaCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 02:48:27,279 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-19 02:48:27,279 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:48:27,286 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:48:27,288 INFO  L85        PathProgramCache]: Analyzing trace with hash 2049939418, now seen corresponding path program 1 times
[2023-12-19 02:48:27,288 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:48:27,288 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881134976]
[2023-12-19 02:48:27,289 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:48:27,289 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:48:28,426 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:48:47,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:48:47,401 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:48:47,402 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881134976]
[2023-12-19 02:48:47,402 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881134976] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:48:47,402 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:48:47,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:48:47,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171460176]
[2023-12-19 02:48:47,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:48:47,416 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:48:47,416 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:48:47,441 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:48:47,442 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:48:47,446 INFO  L87              Difference]: Start difference. First operand 20383 states and 32929 transitions. Second operand  has 3 states, 3 states have (on average 3371.0) internal successors, (10113), 2 states have internal predecessors, (10113), 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)
[2023-12-19 02:49:20,029 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:49:20,029 INFO  L93              Difference]: Finished difference Result 61145 states and 98784 transitions.
[2023-12-19 02:49:20,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 02:49:20,032 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3371.0) internal successors, (10113), 2 states have internal predecessors, (10113), 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 10113
[2023-12-19 02:49:20,032 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:49:20,105 INFO  L225             Difference]: With dead ends: 61145
[2023-12-19 02:49:20,106 INFO  L226             Difference]: Without dead ends: 40763
[2023-12-19 02:49:20,127 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
[2023-12-19 02:49:20,130 INFO  L413           NwaCegarLoop]: 8836 mSDtfsCounter, 11137 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29967 mSolverCounterSat, 11743 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11137 SdHoareTripleChecker+Valid, 8885 SdHoareTripleChecker+Invalid, 41710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11743 IncrementalHoareTripleChecker+Valid, 29967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.8s IncrementalHoareTripleChecker+Time
[2023-12-19 02:49:20,130 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [11137 Valid, 8885 Invalid, 41710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11743 Valid, 29967 Invalid, 0 Unknown, 0 Unchecked, 31.8s Time]
[2023-12-19 02:49:20,170 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 40763 states.
[2023-12-19 02:49:20,597 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 40763 to 40763.
[2023-12-19 02:49:20,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 40763 states, 40762 states have (on average 1.4703400225700407) internal successors, (59934), 40762 states have internal predecessors, (59934), 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)
[2023-12-19 02:49:20,696 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 40763 states to 40763 states and 59934 transitions.
[2023-12-19 02:49:20,696 INFO  L78                 Accepts]: Start accepts. Automaton has 40763 states and 59934 transitions. Word has length 10113
[2023-12-19 02:49:20,698 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:49:20,700 INFO  L495      AbstractCegarLoop]: Abstraction has 40763 states and 59934 transitions.
[2023-12-19 02:49:20,702 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3371.0) internal successors, (10113), 2 states have internal predecessors, (10113), 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)
[2023-12-19 02:49:20,706 INFO  L276                IsEmpty]: Start isEmpty. Operand 40763 states and 59934 transitions.
[2023-12-19 02:49:21,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10117
[2023-12-19 02:49:21,413 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:49:21,416 INFO  L195           NwaCegarLoop]: trace histogram [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, 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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[2023-12-19 02:49:21,417 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-19 02:49:21,417 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:49:21,417 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:49:21,419 INFO  L85        PathProgramCache]: Analyzing trace with hash -1386516795, now seen corresponding path program 1 times
[2023-12-19 02:49:21,419 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:49:21,419 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924458509]
[2023-12-19 02:49:21,420 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:49:21,420 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:49:22,681 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:49:41,737 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:49:41,737 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:49:41,737 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924458509]
[2023-12-19 02:49:41,737 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924458509] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:49:41,737 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:49:41,761 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:49:41,761 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478014186]
[2023-12-19 02:49:41,761 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:49:41,767 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:49:41,768 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:49:41,788 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:49:41,789 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:49:41,792 INFO  L87              Difference]: Start difference. First operand 40763 states and 59934 transitions. Second operand  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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)
[2023-12-19 02:50:13,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:50:13,824 INFO  L93              Difference]: Finished difference Result 122285 states and 179799 transitions.
[2023-12-19 02:50:13,824 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 02:50:13,826 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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 10116
[2023-12-19 02:50:13,826 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:50:13,994 INFO  L225             Difference]: With dead ends: 122285
[2023-12-19 02:50:13,994 INFO  L226             Difference]: Without dead ends: 81523
[2023-12-19 02:50:14,013 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
[2023-12-19 02:50:14,014 INFO  L413           NwaCegarLoop]: 9445 mSDtfsCounter, 10618 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31304 mSolverCounterSat, 10928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10618 SdHoareTripleChecker+Valid, 9494 SdHoareTripleChecker+Invalid, 42232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10928 IncrementalHoareTripleChecker+Valid, 31304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.0s IncrementalHoareTripleChecker+Time
[2023-12-19 02:50:14,014 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [10618 Valid, 9494 Invalid, 42232 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10928 Valid, 31304 Invalid, 0 Unknown, 0 Unchecked, 31.0s Time]
[2023-12-19 02:50:14,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 81523 states.
[2023-12-19 02:50:14,768 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 81523 to 81523.
[2023-12-19 02:50:14,854 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 81523 states, 81522 states have (on average 1.3593631167046931) internal successors, (110818), 81522 states have internal predecessors, (110818), 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)
[2023-12-19 02:50:14,987 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 81523 states to 81523 states and 110818 transitions.
[2023-12-19 02:50:14,987 INFO  L78                 Accepts]: Start accepts. Automaton has 81523 states and 110818 transitions. Word has length 10116
[2023-12-19 02:50:14,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:50:14,990 INFO  L495      AbstractCegarLoop]: Abstraction has 81523 states and 110818 transitions.
[2023-12-19 02:50:14,993 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3372.0) internal successors, (10116), 2 states have internal predecessors, (10116), 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)
[2023-12-19 02:50:14,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 81523 states and 110818 transitions.
[2023-12-19 02:50:16,062 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10147
[2023-12-19 02:50:16,063 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:50:16,067 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 02:50:16,067 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-19 02:50:16,067 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:50:16,068 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:50:16,070 INFO  L85        PathProgramCache]: Analyzing trace with hash 918960890, now seen corresponding path program 1 times
[2023-12-19 02:50:16,071 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:50:16,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419158067]
[2023-12-19 02:50:16,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:50:16,072 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:50:17,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:50:38,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:50:38,475 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:50:38,475 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419158067]
[2023-12-19 02:50:38,477 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419158067] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:50:38,477 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:50:38,478 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:50:38,478 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79670629]
[2023-12-19 02:50:38,479 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:50:38,486 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:50:38,487 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:50:38,497 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:50:38,497 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:50:38,501 INFO  L87              Difference]: Start difference. First operand 81523 states and 110818 transitions. Second operand  has 3 states, 3 states have (on average 3382.0) internal successors, (10146), 2 states have internal predecessors, (10146), 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)
[2023-12-19 02:51:10,649 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:51:10,649 INFO  L93              Difference]: Finished difference Result 244565 states and 332451 transitions.
[2023-12-19 02:51:10,649 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 02:51:10,651 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3382.0) internal successors, (10146), 2 states have internal predecessors, (10146), 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 10146
[2023-12-19 02:51:10,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:51:10,870 INFO  L225             Difference]: With dead ends: 244565
[2023-12-19 02:51:10,871 INFO  L226             Difference]: Without dead ends: 163043
[2023-12-19 02:51:10,938 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
[2023-12-19 02:51:10,938 INFO  L413           NwaCegarLoop]: 6562 mSDtfsCounter, 13102 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 27664 mSolverCounterSat, 13030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13102 SdHoareTripleChecker+Valid, 6611 SdHoareTripleChecker+Invalid, 40694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 13030 IncrementalHoareTripleChecker+Valid, 27664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.7s IncrementalHoareTripleChecker+Time
[2023-12-19 02:51:10,939 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [13102 Valid, 6611 Invalid, 40694 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [13030 Valid, 27664 Invalid, 0 Unknown, 0 Unchecked, 30.7s Time]
[2023-12-19 02:51:11,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 163043 states.
[2023-12-19 02:51:12,333 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 163043 to 163043.
[2023-12-19 02:51:12,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 163043 states, 163042 states have (on average 1.2580194060426149) internal successors, (205110), 163042 states have internal predecessors, (205110), 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)
[2023-12-19 02:51:12,941 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 163043 states to 163043 states and 205110 transitions.
[2023-12-19 02:51:12,942 INFO  L78                 Accepts]: Start accepts. Automaton has 163043 states and 205110 transitions. Word has length 10146
[2023-12-19 02:51:12,942 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:51:12,942 INFO  L495      AbstractCegarLoop]: Abstraction has 163043 states and 205110 transitions.
[2023-12-19 02:51:12,944 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3382.0) internal successors, (10146), 2 states have internal predecessors, (10146), 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)
[2023-12-19 02:51:12,944 INFO  L276                IsEmpty]: Start isEmpty. Operand 163043 states and 205110 transitions.
[2023-12-19 02:51:13,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10154
[2023-12-19 02:51:13,882 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:51:13,885 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-19 02:51:13,885 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-19 02:51:13,885 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:51:13,885 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:51:13,887 INFO  L85        PathProgramCache]: Analyzing trace with hash -11824650, now seen corresponding path program 1 times
[2023-12-19 02:51:13,887 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:51:13,887 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981844918]
[2023-12-19 02:51:13,888 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:51:13,888 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:51:14,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:51:34,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:51:34,929 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:51:34,929 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981844918]
[2023-12-19 02:51:34,929 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981844918] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:51:34,929 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:51:34,930 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:51:34,931 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392714358]
[2023-12-19 02:51:34,931 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:51:34,942 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:51:34,942 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:51:34,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:51:34,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:51:34,959 INFO  L87              Difference]: Start difference. First operand 163043 states and 205110 transitions. Second operand  has 3 states, 3 states have (on average 3384.3333333333335) internal successors, (10153), 2 states have internal predecessors, (10153), 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)
[2023-12-19 02:52:07,939 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-19 02:52:07,939 INFO  L93              Difference]: Finished difference Result 489125 states and 615327 transitions.
[2023-12-19 02:52:07,939 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-19 02:52:07,942 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 3384.3333333333335) internal successors, (10153), 2 states have internal predecessors, (10153), 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 10153
[2023-12-19 02:52:07,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-19 02:52:08,538 INFO  L225             Difference]: With dead ends: 489125
[2023-12-19 02:52:08,538 INFO  L226             Difference]: Without dead ends: 326083
[2023-12-19 02:52:08,603 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
[2023-12-19 02:52:08,603 INFO  L413           NwaCegarLoop]: 6018 mSDtfsCounter, 12828 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 29206 mSolverCounterSat, 11670 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12828 SdHoareTripleChecker+Valid, 6067 SdHoareTripleChecker+Invalid, 40876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11670 IncrementalHoareTripleChecker+Valid, 29206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.8s IncrementalHoareTripleChecker+Time
[2023-12-19 02:52:08,604 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12828 Valid, 6067 Invalid, 40876 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11670 Valid, 29206 Invalid, 0 Unknown, 0 Unchecked, 30.8s Time]
[2023-12-19 02:52:08,789 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326083 states.
[2023-12-19 02:52:11,654 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326083 to 326083.
[2023-12-19 02:52:11,853 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 326083 states, 326082 states have (on average 1.1961776485669249) internal successors, (390052), 326082 states have internal predecessors, (390052), 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)
[2023-12-19 02:52:12,532 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326083 states to 326083 states and 390052 transitions.
[2023-12-19 02:52:12,533 INFO  L78                 Accepts]: Start accepts. Automaton has 326083 states and 390052 transitions. Word has length 10153
[2023-12-19 02:52:12,533 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-19 02:52:12,533 INFO  L495      AbstractCegarLoop]: Abstraction has 326083 states and 390052 transitions.
[2023-12-19 02:52:12,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 3384.3333333333335) internal successors, (10153), 2 states have internal predecessors, (10153), 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)
[2023-12-19 02:52:12,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 326083 states and 390052 transitions.
[2023-12-19 02:52:13,712 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10297
[2023-12-19 02:52:13,712 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-19 02:52:13,714 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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[2023-12-19 02:52:13,714 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-19 02:52:13,714 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-19 02:52:13,715 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-19 02:52:13,715 INFO  L85        PathProgramCache]: Analyzing trace with hash 1902273539, now seen corresponding path program 1 times
[2023-12-19 02:52:13,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-19 02:52:13,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399776271]
[2023-12-19 02:52:13,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-19 02:52:13,716 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-19 02:52:14,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-19 02:52:34,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 186 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-19 02:52:34,850 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-19 02:52:34,850 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399776271]
[2023-12-19 02:52:34,850 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399776271] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-19 02:52:34,850 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-19 02:52:34,851 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-19 02:52:34,851 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506995594]
[2023-12-19 02:52:34,851 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-19 02:52:34,856 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-19 02:52:34,856 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-19 02:52:34,861 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-19 02:52:34,861 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-19 02:52:34,862 INFO  L87              Difference]: Start difference. First operand 326083 states and 390052 transitions. Second operand  has 3 states, 3 states have (on average 3432.0) internal successors, (10296), 2 states have internal predecessors, (10296), 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)