/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.brp.4.prop1-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-16 18:57:49,272 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-16 18:57:49,345 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-16 18:57:49,348 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-16 18:57:49,349 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-16 18:57:49,371 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-16 18:57:49,371 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-16 18:57:49,371 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-16 18:57:49,372 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-16 18:57:49,375 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-16 18:57:49,375 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-16 18:57:49,375 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-16 18:57:49,376 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-16 18:57:49,377 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-16 18:57:49,377 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-16 18:57:49,377 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-16 18:57:49,378 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-16 18:57:49,379 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-16 18:57:49,379 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-16 18:57:49,379 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-16 18:57:49,379 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-16 18:57:49,379 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-16 18:57:49,380 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-16 18:57:49,380 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-16 18:57:49,380 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 18:57:49,381 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-16 18:57:49,381 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-16 18:57:49,382 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-16 18:57:49,382 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-16 18:57:49,382 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-16 18:57:49,566 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-16 18:57:49,582 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-16 18:57:49,584 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-16 18:57:49,585 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-16 18:57:49,588 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-16 18:57:49,589 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.brp.4.prop1-func-interl.c
[2023-12-16 18:57:50,571 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-16 18:57:50,887 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-16 18:57:50,888 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.brp.4.prop1-func-interl.c
[2023-12-16 18:57:50,907 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c1c2db7/f139f974c9e34191be1f0a4f9fdcf5d1/FLAG0d613f065
[2023-12-16 18:57:50,921 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38c1c2db7/f139f974c9e34191be1f0a4f9fdcf5d1
[2023-12-16 18:57:50,922 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-16 18:57:50,924 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-16 18:57:50,925 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-16 18:57:50,925 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-16 18:57:50,928 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-16 18:57:50,928 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:57:50" (1/1) ...
[2023-12-16 18:57:50,930 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eb79e49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:50, skipping insertion in model container
[2023-12-16 18:57:50,930 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 06:57:50" (1/1) ...
[2023-12-16 18:57:51,000 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-16 18:57:51,162 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.brp.4.prop1-func-interl.c[1170,1183]
[2023-12-16 18:57:51,513 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 18:57:51,520 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-16 18:57:51,528 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.brp.4.prop1-func-interl.c[1170,1183]
[2023-12-16 18:57:51,762 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-16 18:57:51,773 INFO  L206         MainTranslator]: Completed translation
[2023-12-16 18:57:51,774 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51 WrapperNode
[2023-12-16 18:57:51,774 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-16 18:57:51,775 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-16 18:57:51,775 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-16 18:57:51,775 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-16 18:57:51,779 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:51,842 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:52,773 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 12107
[2023-12-16 18:57:52,773 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-16 18:57:52,774 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-16 18:57:52,774 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-16 18:57:52,774 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-16 18:57:52,782 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:52,783 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,095 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,291 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].
[2023-12-16 18:57:53,291 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,291 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,622 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,746 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,798 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:53,847 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:54,053 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-16 18:57:54,054 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-16 18:57:54,054 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-16 18:57:54,054 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-16 18:57:54,055 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (1/1) ...
[2023-12-16 18:57:54,058 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-16 18:57:54,065 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-16 18:57:54,077 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)
[2023-12-16 18:57:54,083 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
[2023-12-16 18:57:54,098 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-16 18:57:54,099 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-16 18:57:54,099 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-16 18:57:54,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-16 18:57:54,544 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-16 18:57:54,546 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-16 18:57:59,060 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-16 18:57:59,181 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-16 18:57:59,182 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-16 18:57:59,182 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:57:59 BoogieIcfgContainer
[2023-12-16 18:57:59,183 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-16 18:57:59,185 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-16 18:57:59,185 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-16 18:57:59,187 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-16 18:57:59,187 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 06:57:50" (1/3) ...
[2023-12-16 18:57:59,188 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371c12ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:57:59, skipping insertion in model container
[2023-12-16 18:57:59,188 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 06:57:51" (2/3) ...
[2023-12-16 18:57:59,188 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371c12ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 06:57:59, skipping insertion in model container
[2023-12-16 18:57:59,188 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 06:57:59" (3/3) ...
[2023-12-16 18:57:59,189 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.brp.4.prop1-func-interl.c
[2023-12-16 18:57:59,201 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-16 18:57:59,201 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-16 18:57:59,270 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-16 18:57:59,275 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;@249deb40, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-16 18:57:59,275 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-16 18:57:59,284 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 2771 states, 2769 states have (on average 1.6666666666666667) internal successors, (4615), 2770 states have internal predecessors, (4615), 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)
[2023-12-16 18:57:59,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2023-12-16 18:57:59,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:57:59,301 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]
[2023-12-16 18:57:59,302 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:57:59,305 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:57:59,305 INFO  L85        PathProgramCache]: Analyzing trace with hash 1552974218, now seen corresponding path program 1 times
[2023-12-16 18:57:59,311 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:57:59,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106565181]
[2023-12-16 18:57:59,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:57:59,312 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:57:59,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:00,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:00,114 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:00,114 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106565181]
[2023-12-16 18:58:00,114 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106565181] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:00,114 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:00,114 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:00,116 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963078352]
[2023-12-16 18:58:00,117 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:00,120 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:00,120 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:00,149 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:00,150 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:00,157 INFO  L87              Difference]: Start difference. First operand  has 2771 states, 2769 states have (on average 1.6666666666666667) internal successors, (4615), 2770 states have internal predecessors, (4615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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)
[2023-12-16 18:58:00,408 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:00,409 INFO  L93              Difference]: Finished difference Result 5427 states and 9041 transitions.
[2023-12-16 18:58:00,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 18:58:00,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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 170
[2023-12-16 18:58:00,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:00,427 INFO  L225             Difference]: With dead ends: 5427
[2023-12-16 18:58:00,427 INFO  L226             Difference]: Without dead ends: 2771
[2023-12-16 18:58:00,434 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:00,436 INFO  L413           NwaCegarLoop]: 4608 mSDtfsCounter, 1 mSDsluCounter, 9211 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13819 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:00,437 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13819 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 18:58:00,452 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2771 states.
[2023-12-16 18:58:00,521 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2771.
[2023-12-16 18:58:00,527 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2771 states, 2770 states have (on average 1.6653429602888086) internal successors, (4613), 2770 states have internal predecessors, (4613), 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)
[2023-12-16 18:58:00,534 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4613 transitions.
[2023-12-16 18:58:00,535 INFO  L78                 Accepts]: Start accepts. Automaton has 2771 states and 4613 transitions. Word has length 170
[2023-12-16 18:58:00,538 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:00,538 INFO  L495      AbstractCegarLoop]: Abstraction has 2771 states and 4613 transitions.
[2023-12-16 18:58:00,539 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 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)
[2023-12-16 18:58:00,539 INFO  L276                IsEmpty]: Start isEmpty. Operand 2771 states and 4613 transitions.
[2023-12-16 18:58:00,544 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2023-12-16 18:58:00,544 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:00,545 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]
[2023-12-16 18:58:00,545 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-16 18:58:00,545 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:00,546 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:00,546 INFO  L85        PathProgramCache]: Analyzing trace with hash 899286446, now seen corresponding path program 1 times
[2023-12-16 18:58:00,546 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:00,546 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488345424]
[2023-12-16 18:58:00,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:00,547 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:00,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:00,859 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:00,860 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:00,860 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488345424]
[2023-12-16 18:58:00,860 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488345424] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:00,860 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:00,860 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:00,860 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343635961]
[2023-12-16 18:58:00,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:00,863 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:00,865 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:00,866 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:00,866 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:00,866 INFO  L87              Difference]: Start difference. First operand 2771 states and 4613 transitions. Second operand  has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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)
[2023-12-16 18:58:00,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:00,987 INFO  L93              Difference]: Finished difference Result 5430 states and 9039 transitions.
[2023-12-16 18:58:00,988 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 18:58:00,988 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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 171
[2023-12-16 18:58:00,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:00,998 INFO  L225             Difference]: With dead ends: 5430
[2023-12-16 18:58:00,998 INFO  L226             Difference]: Without dead ends: 2774
[2023-12-16 18:58:01,002 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:01,003 INFO  L413           NwaCegarLoop]: 4608 mSDtfsCounter, 1 mSDsluCounter, 9209 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 13817 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:01,004 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 13817 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 18:58:01,009 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2774 states.
[2023-12-16 18:58:01,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2773.
[2023-12-16 18:58:01,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2773 states, 2772 states have (on average 1.6648629148629148) internal successors, (4615), 2772 states have internal predecessors, (4615), 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)
[2023-12-16 18:58:01,051 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2773 states to 2773 states and 4615 transitions.
[2023-12-16 18:58:01,052 INFO  L78                 Accepts]: Start accepts. Automaton has 2773 states and 4615 transitions. Word has length 171
[2023-12-16 18:58:01,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:01,053 INFO  L495      AbstractCegarLoop]: Abstraction has 2773 states and 4615 transitions.
[2023-12-16 18:58:01,053 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 42.75) internal successors, (171), 4 states have internal predecessors, (171), 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)
[2023-12-16 18:58:01,053 INFO  L276                IsEmpty]: Start isEmpty. Operand 2773 states and 4615 transitions.
[2023-12-16 18:58:01,054 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2023-12-16 18:58:01,054 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:01,054 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]
[2023-12-16 18:58:01,054 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-16 18:58:01,055 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:01,061 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:01,062 INFO  L85        PathProgramCache]: Analyzing trace with hash -622315354, now seen corresponding path program 1 times
[2023-12-16 18:58:01,062 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:01,062 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819527365]
[2023-12-16 18:58:01,062 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:01,062 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:01,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:01,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:01,277 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:01,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819527365]
[2023-12-16 18:58:01,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819527365] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:01,278 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:01,278 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:01,278 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958364320]
[2023-12-16 18:58:01,278 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:01,279 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:01,279 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:01,280 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:01,281 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:01,282 INFO  L87              Difference]: Start difference. First operand 2773 states and 4615 transitions. Second operand  has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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)
[2023-12-16 18:58:01,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:01,392 INFO  L93              Difference]: Finished difference Result 8079 states and 13448 transitions.
[2023-12-16 18:58:01,392 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 18:58:01,392 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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 172
[2023-12-16 18:58:01,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:01,407 INFO  L225             Difference]: With dead ends: 8079
[2023-12-16 18:58:01,408 INFO  L226             Difference]: Without dead ends: 5421
[2023-12-16 18:58:01,416 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:01,418 INFO  L413           NwaCegarLoop]: 4819 mSDtfsCounter, 4406 mSDsluCounter, 9416 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 14235 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:01,419 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4406 Valid, 14235 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 18:58:01,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5421 states.
[2023-12-16 18:58:01,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5421 to 2775.
[2023-12-16 18:58:01,470 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2775 states, 2774 states have (on average 1.6643835616438356) internal successors, (4617), 2774 states have internal predecessors, (4617), 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)
[2023-12-16 18:58:01,476 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 4617 transitions.
[2023-12-16 18:58:01,477 INFO  L78                 Accepts]: Start accepts. Automaton has 2775 states and 4617 transitions. Word has length 172
[2023-12-16 18:58:01,477 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:01,477 INFO  L495      AbstractCegarLoop]: Abstraction has 2775 states and 4617 transitions.
[2023-12-16 18:58:01,478 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 43.0) internal successors, (172), 4 states have internal predecessors, (172), 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)
[2023-12-16 18:58:01,479 INFO  L276                IsEmpty]: Start isEmpty. Operand 2775 states and 4617 transitions.
[2023-12-16 18:58:01,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 174
[2023-12-16 18:58:01,481 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:01,484 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]
[2023-12-16 18:58:01,484 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-16 18:58:01,485 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:01,485 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:01,485 INFO  L85        PathProgramCache]: Analyzing trace with hash 2072354966, now seen corresponding path program 1 times
[2023-12-16 18:58:01,485 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:01,485 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707703607]
[2023-12-16 18:58:01,485 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:01,486 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:01,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:01,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:01,793 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:01,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707703607]
[2023-12-16 18:58:01,793 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707703607] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:01,793 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:01,793 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:01,793 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402563766]
[2023-12-16 18:58:01,793 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:01,793 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-16 18:58:01,794 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:01,794 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-16 18:58:01,794 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-16 18:58:01,794 INFO  L87              Difference]: Start difference. First operand 2775 states and 4617 transitions. Second operand  has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 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)
[2023-12-16 18:58:02,003 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:02,003 INFO  L93              Difference]: Finished difference Result 8214 states and 13669 transitions.
[2023-12-16 18:58:02,004 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-16 18:58:02,004 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 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 173
[2023-12-16 18:58:02,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:02,018 INFO  L225             Difference]: With dead ends: 8214
[2023-12-16 18:58:02,018 INFO  L226             Difference]: Without dead ends: 5554
[2023-12-16 18:58:02,022 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-16 18:58:02,026 INFO  L413           NwaCegarLoop]: 4815 mSDtfsCounter, 17893 mSDsluCounter, 9207 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17893 SdHoareTripleChecker+Valid, 14022 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:02,027 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17893 Valid, 14022 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-16 18:58:02,034 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5554 states.
[2023-12-16 18:58:02,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 2904.
[2023-12-16 18:58:02,094 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2904 states, 2903 states have (on average 1.6644850155012056) internal successors, (4832), 2903 states have internal predecessors, (4832), 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)
[2023-12-16 18:58:02,102 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4832 transitions.
[2023-12-16 18:58:02,103 INFO  L78                 Accepts]: Start accepts. Automaton has 2904 states and 4832 transitions. Word has length 173
[2023-12-16 18:58:02,103 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:02,103 INFO  L495      AbstractCegarLoop]: Abstraction has 2904 states and 4832 transitions.
[2023-12-16 18:58:02,103 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 34.6) internal successors, (173), 4 states have internal predecessors, (173), 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)
[2023-12-16 18:58:02,104 INFO  L276                IsEmpty]: Start isEmpty. Operand 2904 states and 4832 transitions.
[2023-12-16 18:58:02,163 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1943
[2023-12-16 18:58:02,163 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:02,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-16 18:58:02,164 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-16 18:58:02,164 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:02,165 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:02,165 INFO  L85        PathProgramCache]: Analyzing trace with hash 604618359, now seen corresponding path program 1 times
[2023-12-16 18:58:02,165 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:02,165 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593867929]
[2023-12-16 18:58:02,165 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:02,165 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:08,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:12,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:12,131 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:12,131 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593867929]
[2023-12-16 18:58:12,131 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593867929] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:12,131 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:12,131 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:12,132 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092020425]
[2023-12-16 18:58:12,132 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:12,134 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:12,134 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:12,136 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:12,136 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:12,137 INFO  L87              Difference]: Start difference. First operand 2904 states and 4832 transitions. Second operand  has 4 states, 4 states have (on average 485.5) internal successors, (1942), 4 states have internal predecessors, (1942), 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)
[2023-12-16 18:58:13,752 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:13,752 INFO  L93              Difference]: Finished difference Result 7960 states and 13162 transitions.
[2023-12-16 18:58:13,753 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-16 18:58:13,754 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 485.5) internal successors, (1942), 4 states have internal predecessors, (1942), 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 1942
[2023-12-16 18:58:13,756 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:13,764 INFO  L225             Difference]: With dead ends: 7960
[2023-12-16 18:58:13,764 INFO  L226             Difference]: Without dead ends: 2904
[2023-12-16 18:58:13,769 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-16 18:58:13,769 INFO  L413           NwaCegarLoop]: 5829 mSDtfsCounter, 2605 mSDsluCounter, 9307 mSDsCounter, 0 mSdLazyCounter, 1645 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2605 SdHoareTripleChecker+Valid, 15136 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 1645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:13,770 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [2605 Valid, 15136 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 1645 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-16 18:58:13,772 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2904 states.
[2023-12-16 18:58:13,800 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2904.
[2023-12-16 18:58:13,804 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2904 states, 2903 states have (on average 1.6641405442645538) internal successors, (4831), 2903 states have internal predecessors, (4831), 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)
[2023-12-16 18:58:13,811 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4831 transitions.
[2023-12-16 18:58:13,811 INFO  L78                 Accepts]: Start accepts. Automaton has 2904 states and 4831 transitions. Word has length 1942
[2023-12-16 18:58:13,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:13,812 INFO  L495      AbstractCegarLoop]: Abstraction has 2904 states and 4831 transitions.
[2023-12-16 18:58:13,813 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 485.5) internal successors, (1942), 4 states have internal predecessors, (1942), 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)
[2023-12-16 18:58:13,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 2904 states and 4831 transitions.
[2023-12-16 18:58:13,935 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1944
[2023-12-16 18:58:13,935 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:13,936 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-16 18:58:13,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-16 18:58:13,937 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:13,937 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:13,938 INFO  L85        PathProgramCache]: Analyzing trace with hash -1717570845, now seen corresponding path program 1 times
[2023-12-16 18:58:13,938 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:13,938 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269454365]
[2023-12-16 18:58:13,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:13,938 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:18,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:20,939 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:20,940 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:20,940 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269454365]
[2023-12-16 18:58:20,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269454365] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:20,940 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:20,940 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:20,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102965865]
[2023-12-16 18:58:20,940 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:20,941 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:20,942 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:20,943 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:20,943 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:20,944 INFO  L87              Difference]: Start difference. First operand 2904 states and 4831 transitions. Second operand  has 4 states, 4 states have (on average 485.75) internal successors, (1943), 4 states have internal predecessors, (1943), 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)
[2023-12-16 18:58:22,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:22,607 INFO  L93              Difference]: Finished difference Result 5564 states and 9256 transitions.
[2023-12-16 18:58:22,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 18:58:22,608 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 485.75) internal successors, (1943), 4 states have internal predecessors, (1943), 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 1943
[2023-12-16 18:58:22,609 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:22,615 INFO  L225             Difference]: With dead ends: 5564
[2023-12-16 18:58:22,616 INFO  L226             Difference]: Without dead ends: 2904
[2023-12-16 18:58:22,618 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:22,618 INFO  L413           NwaCegarLoop]: 3486 mSDtfsCounter, 4587 mSDsluCounter, 3477 mSDsCounter, 0 mSdLazyCounter, 2251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4587 SdHoareTripleChecker+Valid, 6963 SdHoareTripleChecker+Invalid, 2252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:22,619 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4587 Valid, 6963 Invalid, 2252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2251 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time]
[2023-12-16 18:58:22,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2904 states.
[2023-12-16 18:58:22,644 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2904 to 2904.
[2023-12-16 18:58:22,648 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2904 states, 2903 states have (on average 1.6637960730279022) internal successors, (4830), 2903 states have internal predecessors, (4830), 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)
[2023-12-16 18:58:22,652 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2904 states to 2904 states and 4830 transitions.
[2023-12-16 18:58:22,652 INFO  L78                 Accepts]: Start accepts. Automaton has 2904 states and 4830 transitions. Word has length 1943
[2023-12-16 18:58:22,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:22,653 INFO  L495      AbstractCegarLoop]: Abstraction has 2904 states and 4830 transitions.
[2023-12-16 18:58:22,654 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 485.75) internal successors, (1943), 4 states have internal predecessors, (1943), 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)
[2023-12-16 18:58:22,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 2904 states and 4830 transitions.
[2023-12-16 18:58:22,676 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1945
[2023-12-16 18:58:22,676 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:22,677 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-16 18:58:22,677 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-12-16 18:58:22,677 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:22,677 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:22,678 INFO  L85        PathProgramCache]: Analyzing trace with hash -2129198341, now seen corresponding path program 1 times
[2023-12-16 18:58:22,678 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:22,678 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325003960]
[2023-12-16 18:58:22,678 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:22,678 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:26,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:29,495 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:29,495 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:29,495 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325003960]
[2023-12-16 18:58:29,495 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325003960] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:29,495 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:29,495 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-16 18:58:29,496 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596452242]
[2023-12-16 18:58:29,496 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:29,497 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-16 18:58:29,497 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:29,499 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-16 18:58:29,499 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-16 18:58:29,499 INFO  L87              Difference]: Start difference. First operand 2904 states and 4830 transitions. Second operand  has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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)
[2023-12-16 18:58:33,750 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:33,750 INFO  L93              Difference]: Finished difference Result 8222 states and 13675 transitions.
[2023-12-16 18:58:33,750 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-16 18:58:33,751 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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 1944
[2023-12-16 18:58:33,752 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:33,765 INFO  L225             Difference]: With dead ends: 8222
[2023-12-16 18:58:33,765 INFO  L226             Difference]: Without dead ends: 5562
[2023-12-16 18:58:33,771 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-16 18:58:33,772 INFO  L413           NwaCegarLoop]: 6786 mSDtfsCounter, 9030 mSDsluCounter, 17035 mSDsCounter, 0 mSdLazyCounter, 7480 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9030 SdHoareTripleChecker+Valid, 23821 SdHoareTripleChecker+Invalid, 7481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:33,772 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [9030 Valid, 23821 Invalid, 7481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7480 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time]
[2023-12-16 18:58:33,776 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5562 states.
[2023-12-16 18:58:33,813 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 2978.
[2023-12-16 18:58:33,816 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2978 states, 2977 states have (on average 1.663419549882432) internal successors, (4952), 2977 states have internal predecessors, (4952), 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)
[2023-12-16 18:58:33,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4952 transitions.
[2023-12-16 18:58:33,820 INFO  L78                 Accepts]: Start accepts. Automaton has 2978 states and 4952 transitions. Word has length 1944
[2023-12-16 18:58:33,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:33,821 INFO  L495      AbstractCegarLoop]: Abstraction has 2978 states and 4952 transitions.
[2023-12-16 18:58:33,822 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 324.0) internal successors, (1944), 6 states have internal predecessors, (1944), 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)
[2023-12-16 18:58:33,822 INFO  L276                IsEmpty]: Start isEmpty. Operand 2978 states and 4952 transitions.
[2023-12-16 18:58:33,844 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1945
[2023-12-16 18:58:33,844 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:33,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-16 18:58:33,845 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-12-16 18:58:33,846 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:33,846 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:33,846 INFO  L85        PathProgramCache]: Analyzing trace with hash -1804878151, now seen corresponding path program 1 times
[2023-12-16 18:58:33,846 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:33,846 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015464700]
[2023-12-16 18:58:33,846 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:33,847 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-16 18:58:37,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-16 18:58:39,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-16 18:58:39,840 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-16 18:58:39,840 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015464700]
[2023-12-16 18:58:39,840 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015464700] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-16 18:58:39,840 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-16 18:58:39,840 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-16 18:58:39,840 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535588546]
[2023-12-16 18:58:39,840 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-16 18:58:39,842 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-16 18:58:39,842 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-16 18:58:39,843 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-16 18:58:39,843 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:39,844 INFO  L87              Difference]: Start difference. First operand 2978 states and 4952 transitions. Second operand  has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 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)
[2023-12-16 18:58:41,189 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-16 18:58:41,189 INFO  L93              Difference]: Finished difference Result 5712 states and 9498 transitions.
[2023-12-16 18:58:41,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-16 18:58:41,190 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 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 1944
[2023-12-16 18:58:41,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-16 18:58:41,207 INFO  L225             Difference]: With dead ends: 5712
[2023-12-16 18:58:41,207 INFO  L226             Difference]: Without dead ends: 2978
[2023-12-16 18:58:41,210 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-12-16 18:58:41,211 INFO  L413           NwaCegarLoop]: 3486 mSDtfsCounter, 4383 mSDsluCounter, 3479 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4383 SdHoareTripleChecker+Valid, 6965 SdHoareTripleChecker+Invalid, 2248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-12-16 18:58:41,211 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [4383 Valid, 6965 Invalid, 2248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2247 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-12-16 18:58:41,214 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2978 states.
[2023-12-16 18:58:41,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2978.
[2023-12-16 18:58:41,247 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2978 states, 2977 states have (on average 1.6630836412495802) internal successors, (4951), 2977 states have internal predecessors, (4951), 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)
[2023-12-16 18:58:41,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2978 states to 2978 states and 4951 transitions.
[2023-12-16 18:58:41,250 INFO  L78                 Accepts]: Start accepts. Automaton has 2978 states and 4951 transitions. Word has length 1944
[2023-12-16 18:58:41,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-16 18:58:41,252 INFO  L495      AbstractCegarLoop]: Abstraction has 2978 states and 4951 transitions.
[2023-12-16 18:58:41,253 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 486.0) internal successors, (1944), 4 states have internal predecessors, (1944), 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)
[2023-12-16 18:58:41,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 2978 states and 4951 transitions.
[2023-12-16 18:58:41,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1946
[2023-12-16 18:58:41,275 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-16 18:58:41,276 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-16 18:58:41,276 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2023-12-16 18:58:41,277 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-16 18:58:41,277 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-16 18:58:41,277 INFO  L85        PathProgramCache]: Analyzing trace with hash -1790638361, now seen corresponding path program 1 times
[2023-12-16 18:58:41,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-16 18:58:41,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949402843]
[2023-12-16 18:58:41,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-16 18:58:41,278 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
Received shutdown request...
[2023-12-16 18:58:44,004 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2023-12-16 18:58:44,036 INFO  L805   garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining)
[2023-12-16 18:58:44,037 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2023-12-16 18:58:44,037 WARN  L619      AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 1946 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1949402843] and IpTcStrategyModuleZ3 [871442937].
[2023-12-16 18:58:44,040 INFO  L445         BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-16 18:58:44,041 INFO  L179   ceAbstractionStarter]: Computing trace abstraction results
[2023-12-16 18:58:44,043 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 06:58:44 BoogieIcfgContainer
[2023-12-16 18:58:44,043 INFO  L131        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-12-16 18:58:44,043 INFO  L158              Benchmark]: Toolchain (without parser) took 53119.14ms. Allocated memory was 378.5MB in the beginning and 3.1GB in the end (delta: 2.7GB). Free memory was 333.3MB in the beginning and 2.3GB in the end (delta: -2.0GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,043 INFO  L158              Benchmark]: CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB.
[2023-12-16 18:58:44,043 INFO  L158              Benchmark]: CACSL2BoogieTranslator took 849.31ms. Allocated memory is still 378.5MB. Free memory was 332.8MB in the beginning and 295.0MB in the end (delta: 37.8MB). Peak memory consumption was 151.1MB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,043 INFO  L158              Benchmark]: Boogie Procedure Inliner took 998.86ms. Allocated memory was 378.5MB in the beginning and 1.2GB in the end (delta: 837.8MB). Free memory was 295.0MB in the beginning and 977.6MB in the end (delta: -682.6MB). Peak memory consumption was 188.8MB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,044 INFO  L158              Benchmark]: Boogie Preprocessor took 1279.49ms. Allocated memory is still 1.2GB. Free memory was 977.6MB in the beginning and 920.4MB in the end (delta: 57.1MB). Peak memory consumption was 113.2MB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,044 INFO  L158              Benchmark]: RCFGBuilder took 5129.09ms. Allocated memory was 1.2GB in the beginning and 2.6GB in the end (delta: 1.4GB). Free memory was 920.4MB in the beginning and 2.1GB in the end (delta: -1.2GB). Peak memory consumption was 258.5MB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,044 INFO  L158              Benchmark]: TraceAbstraction took 44858.08ms. Allocated memory was 2.6GB in the beginning and 3.1GB in the end (delta: 489.7MB). Free memory was 2.1GB in the beginning and 2.3GB in the end (delta: -231.2MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB.
[2023-12-16 18:58:44,045 WARN  L340       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end
[2023-12-16 18:58:44,045 INFO  L338   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.11ms. Allocated memory is still 199.2MB. Free memory is still 146.3MB. There was no memory consumed. Max. memory is 8.0GB.
 * CACSL2BoogieTranslator took 849.31ms. Allocated memory is still 378.5MB. Free memory was 332.8MB in the beginning and 295.0MB in the end (delta: 37.8MB). Peak memory consumption was 151.1MB. Max. memory is 8.0GB.
 * Boogie Procedure Inliner took 998.86ms. Allocated memory was 378.5MB in the beginning and 1.2GB in the end (delta: 837.8MB). Free memory was 295.0MB in the beginning and 977.6MB in the end (delta: -682.6MB). Peak memory consumption was 188.8MB. Max. memory is 8.0GB.
 * Boogie Preprocessor took 1279.49ms. Allocated memory is still 1.2GB. Free memory was 977.6MB in the beginning and 920.4MB in the end (delta: 57.1MB). Peak memory consumption was 113.2MB. Max. memory is 8.0GB.
 * RCFGBuilder took 5129.09ms. Allocated memory was 1.2GB in the beginning and 2.6GB in the end (delta: 1.4GB). Free memory was 920.4MB in the beginning and 2.1GB in the end (delta: -1.2GB). Peak memory consumption was 258.5MB. Max. memory is 8.0GB.
 * TraceAbstraction took 44858.08ms. Allocated memory was 2.6GB in the beginning and 3.1GB in the end (delta: 489.7MB). Free memory was 2.1GB in the beginning and 2.3GB in the end (delta: -231.2MB). Peak memory consumption was 1.6GB. Max. memory is 8.0GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - StatisticsResult: ErrorAutomatonStatistics
    NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0
  - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction)
    Unable to prove that a call to reach_error is unreachable (line 21). Cancelled while NwaCegarLoop was analyzing trace of length 1946 with TraceHistMax 2,while AutomatonFreeRefinementEngine was Timeout during feasibility check between IpTcStrategyModuleSmtInterpolCraig [1949402843] and IpTcStrategyModuleZ3 [871442937].
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2771 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 44.8s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.3s, AutomataDifference: 9.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42906 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42906 mSDsluCounter, 108778 SdHoareTripleChecker+Invalid, 7.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 70341 mSDsCounter, 257 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13691 IncrementalHoareTripleChecker+Invalid, 13948 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 257 mSolverCounterUnsat, 38437 mSDtfsCounter, 13691 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2978occurred in iteration=7, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 7881 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 18.5s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 8459 NumberOfCodeBlocks, 8459 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 8451 ConstructedInterpolants, 0 QuantifiedInterpolants, 18331 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 368/368 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown