/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.pgm_protocol.8.prop6-func-interl.c


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-25 21:02:04,577 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-25 21:02:04,653 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2023-12-25 21:02:04,659 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-25 21:02:04,659 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-25 21:02:04,691 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-25 21:02:04,691 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-25 21:02:04,692 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-25 21:02:04,692 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-25 21:02:04,695 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-25 21:02:04,696 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-25 21:02:04,696 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-25 21:02:04,696 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-25 21:02:04,697 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-25 21:02:04,697 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-25 21:02:04,698 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-25 21:02:04,698 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-25 21:02:04,698 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2023-12-25 21:02:04,698 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-25 21:02:04,698 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-25 21:02:04,699 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-25 21:02:04,700 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-25 21:02:04,700 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-25 21:02:04,700 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-25 21:02:04,700 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-25 21:02:04,701 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-25 21:02:04,701 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-25 21:02:04,701 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-25 21:02:04,701 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-25 21:02:04,702 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:02:04,703 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-25 21:02:04,703 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-25 21:02:04,704 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-25 21:02:04,704 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-25 21:02:04,704 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-25 21:02:04,704 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> true
[2023-12-25 21:02:04,928 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-25 21:02:04,950 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-25 21:02:04,952 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-25 21:02:04,953 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-25 21:02:04,954 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-25 21:02:04,955 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-12-25 21:02:06,101 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-25 21:02:06,589 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-25 21:02:06,590 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-12-25 21:02:06,631 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9552352/43a3dcda7e414558977ed828ce6f8309/FLAGf664e9f88
[2023-12-25 21:02:06,646 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b9552352/43a3dcda7e414558977ed828ce6f8309
[2023-12-25 21:02:06,648 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-25 21:02:06,650 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-25 21:02:06,652 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-25 21:02:06,652 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-25 21:02:06,656 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-25 21:02:06,657 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:02:06" (1/1) ...
[2023-12-25 21:02:06,658 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44ef7059 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:06, skipping insertion in model container
[2023-12-25 21:02:06,658 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.12 09:02:06" (1/1) ...
[2023-12-25 21:02:06,887 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-25 21:02:07,199 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.pgm_protocol.8.prop6-func-interl.c[1179,1192]
[2023-12-25 21:02:08,299 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:02:08,309 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-25 21:02:08,320 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.pgm_protocol.8.prop6-func-interl.c[1179,1192]
[2023-12-25 21:02:09,147 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-25 21:02:09,160 INFO  L206         MainTranslator]: Completed translation
[2023-12-25 21:02:09,160 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09 WrapperNode
[2023-12-25 21:02:09,160 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-25 21:02:09,161 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-25 21:02:09,161 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-25 21:02:09,161 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-25 21:02:09,167 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:09,510 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:13,122 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 49779
[2023-12-25 21:02:13,123 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-25 21:02:13,123 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-25 21:02:13,123 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-25 21:02:13,124 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-25 21:02:13,134 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:13,135 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:14,169 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:14,778 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-25 21:02:14,778 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:14,779 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:16,042 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:16,189 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:16,405 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:16,571 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:17,436 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-25 21:02:17,438 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-25 21:02:17,438 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-25 21:02:17,438 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-25 21:02:17,439 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (1/1) ...
[2023-12-25 21:02:17,444 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-25 21:02:17,454 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:02:17,487 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-25 21:02:17,512 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-25 21:02:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-25 21:02:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2023-12-25 21:02:17,521 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-25 21:02:17,521 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-25 21:02:19,850 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-25 21:02:19,852 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-25 21:02:39,430 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-25 21:02:40,045 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-25 21:02:40,046 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-25 21:02:40,046 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:02:40 BoogieIcfgContainer
[2023-12-25 21:02:40,047 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-25 21:02:40,050 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-25 21:02:40,050 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-25 21:02:40,053 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-25 21:02:40,053 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.12 09:02:06" (1/3) ...
[2023-12-25 21:02:40,055 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b40f0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:02:40, skipping insertion in model container
[2023-12-25 21:02:40,055 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.12 09:02:09" (2/3) ...
[2023-12-25 21:02:40,055 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b40f0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.12 09:02:40, skipping insertion in model container
[2023-12-25 21:02:40,055 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.12 09:02:40" (3/3) ...
[2023-12-25 21:02:40,056 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.pgm_protocol.8.prop6-func-interl.c
[2023-12-25 21:02:40,071 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-25 21:02:40,071 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-25 21:02:40,236 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-25 21:02:40,242 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;@54fcd343, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-25 21:02:40,242 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-25 21:02:40,278 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:40,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 491
[2023-12-25 21:02:40,314 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:40,316 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:02:40,317 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:40,324 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:40,325 INFO  L85        PathProgramCache]: Analyzing trace with hash -2064861600, now seen corresponding path program 1 times
[2023-12-25 21:02:40,333 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:40,334 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562935015]
[2023-12-25 21:02:40,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:40,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:40,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:42,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:42,869 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:42,869 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562935015]
[2023-12-25 21:02:42,869 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562935015] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:42,869 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:42,870 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:02:42,871 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503980536]
[2023-12-25 21:02:42,872 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:42,878 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:02:42,878 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:42,913 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:02:42,913 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:42,938 INFO  L87              Difference]: Start difference. First operand  has 10909 states, 10907 states have (on average 1.6672778949298614) internal successors, (18185), 10908 states have internal predecessors, (18185), 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 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:43,462 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:43,462 INFO  L93              Difference]: Finished difference Result 21283 states and 35481 transitions.
[2023-12-25 21:02:43,463 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:02:43,465 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 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 490
[2023-12-25 21:02:43,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:43,526 INFO  L225             Difference]: With dead ends: 21283
[2023-12-25 21:02:43,526 INFO  L226             Difference]: Without dead ends: 10909
[2023-12-25 21:02:43,547 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:43,550 INFO  L413           NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36351 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54529 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:43,551 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54529 Invalid, 13 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:02:43,582 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10909 states.
[2023-12-25 21:02:43,777 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10909 to 10909.
[2023-12-25 21:02:43,810 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10909 states, 10908 states have (on average 1.6669416941694168) internal successors, (18183), 10908 states have internal predecessors, (18183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:43,841 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 18183 transitions.
[2023-12-25 21:02:43,842 INFO  L78                 Accepts]: Start accepts. Automaton has 10909 states and 18183 transitions. Word has length 490
[2023-12-25 21:02:43,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:43,844 INFO  L495      AbstractCegarLoop]: Abstraction has 10909 states and 18183 transitions.
[2023-12-25 21:02:43,845 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.5) internal successors, (490), 4 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:43,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 10909 states and 18183 transitions.
[2023-12-25 21:02:43,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 492
[2023-12-25 21:02:43,853 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:43,853 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:02:43,853 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-12-25 21:02:43,854 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:43,854 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:43,854 INFO  L85        PathProgramCache]: Analyzing trace with hash 415527704, now seen corresponding path program 1 times
[2023-12-25 21:02:43,855 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:43,855 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704821126]
[2023-12-25 21:02:43,855 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:43,855 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:44,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:44,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:44,887 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:44,887 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704821126]
[2023-12-25 21:02:44,888 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704821126] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:44,888 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:44,888 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:02:44,888 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137779153]
[2023-12-25 21:02:44,888 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:44,891 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:02:44,895 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:44,896 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:02:44,896 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:44,896 INFO  L87              Difference]: Start difference. First operand 10909 states and 18183 transitions. Second operand  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:45,344 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:45,344 INFO  L93              Difference]: Finished difference Result 21286 states and 35479 transitions.
[2023-12-25 21:02:45,345 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:02:45,345 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 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 491
[2023-12-25 21:02:45,346 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:45,380 INFO  L225             Difference]: With dead ends: 21286
[2023-12-25 21:02:45,380 INFO  L226             Difference]: Without dead ends: 10912
[2023-12-25 21:02:45,393 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:45,394 INFO  L413           NwaCegarLoop]: 18178 mSDtfsCounter, 1 mSDsluCounter, 36349 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 54527 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:45,395 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 54527 Invalid, 15 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:02:45,410 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10912 states.
[2023-12-25 21:02:45,545 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10912 to 10911.
[2023-12-25 21:02:45,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10911 states, 10910 states have (on average 1.666819431714024) internal successors, (18185), 10910 states have internal predecessors, (18185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:45,594 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10911 states to 10911 states and 18185 transitions.
[2023-12-25 21:02:45,595 INFO  L78                 Accepts]: Start accepts. Automaton has 10911 states and 18185 transitions. Word has length 491
[2023-12-25 21:02:45,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:45,596 INFO  L495      AbstractCegarLoop]: Abstraction has 10911 states and 18185 transitions.
[2023-12-25 21:02:45,596 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:45,596 INFO  L276                IsEmpty]: Start isEmpty. Operand 10911 states and 18185 transitions.
[2023-12-25 21:02:45,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 493
[2023-12-25 21:02:45,603 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:45,603 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:02:45,604 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-12-25 21:02:45,604 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:45,611 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:45,611 INFO  L85        PathProgramCache]: Analyzing trace with hash 1561034748, now seen corresponding path program 1 times
[2023-12-25 21:02:45,612 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:45,612 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479243990]
[2023-12-25 21:02:45,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:45,612 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:45,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:46,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:46,527 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:46,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479243990]
[2023-12-25 21:02:46,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479243990] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:46,528 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:46,528 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 21:02:46,528 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635053044]
[2023-12-25 21:02:46,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:46,529 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:02:46,529 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:46,529 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:02:46,530 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:02:46,530 INFO  L87              Difference]: Start difference. First operand 10911 states and 18185 transitions. Second operand  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:47,235 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:47,235 INFO  L93              Difference]: Finished difference Result 31663 states and 52774 transitions.
[2023-12-25 21:02:47,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:02:47,236 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 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 492
[2023-12-25 21:02:47,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:47,289 INFO  L225             Difference]: With dead ends: 31663
[2023-12-25 21:02:47,289 INFO  L226             Difference]: Without dead ends: 21287
[2023-12-25 21:02:47,309 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:02:47,310 INFO  L413           NwaCegarLoop]: 18491 mSDtfsCounter, 34566 mSDsluCounter, 54841 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34566 SdHoareTripleChecker+Valid, 73332 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:47,310 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34566 Valid, 73332 Invalid, 29 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:02:47,336 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21287 states.
[2023-12-25 21:02:47,536 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21287 to 10916.
[2023-12-25 21:02:47,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10916 states, 10915 states have (on average 1.6666972056802565) internal successors, (18192), 10915 states have internal predecessors, (18192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:47,576 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 18192 transitions.
[2023-12-25 21:02:47,577 INFO  L78                 Accepts]: Start accepts. Automaton has 10916 states and 18192 transitions. Word has length 492
[2023-12-25 21:02:47,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:47,578 INFO  L495      AbstractCegarLoop]: Abstraction has 10916 states and 18192 transitions.
[2023-12-25 21:02:47,579 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 98.4) internal successors, (492), 5 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:47,581 INFO  L276                IsEmpty]: Start isEmpty. Operand 10916 states and 18192 transitions.
[2023-12-25 21:02:47,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 494
[2023-12-25 21:02:47,590 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:47,595 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:02:47,595 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-12-25 21:02:47,595 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:47,595 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:47,596 INFO  L85        PathProgramCache]: Analyzing trace with hash 1310986150, now seen corresponding path program 1 times
[2023-12-25 21:02:47,596 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:47,596 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114031672]
[2023-12-25 21:02:47,596 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:47,596 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:47,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:48,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:48,440 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:48,440 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114031672]
[2023-12-25 21:02:48,440 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114031672] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:48,440 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:48,440 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-25 21:02:48,440 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909486494]
[2023-12-25 21:02:48,441 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:48,441 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:02:48,441 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:48,442 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:02:48,442 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:48,442 INFO  L87              Difference]: Start difference. First operand 10916 states and 18192 transitions. Second operand  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:49,003 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:49,003 INFO  L93              Difference]: Finished difference Result 31666 states and 52775 transitions.
[2023-12-25 21:02:49,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:02:49,004 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 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 493
[2023-12-25 21:02:49,004 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:49,042 INFO  L225             Difference]: With dead ends: 31666
[2023-12-25 21:02:49,043 INFO  L226             Difference]: Without dead ends: 21285
[2023-12-25 21:02:49,057 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:02:49,063 INFO  L413           NwaCegarLoop]: 18489 mSDtfsCounter, 17276 mSDsluCounter, 36656 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17276 SdHoareTripleChecker+Valid, 55145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:49,063 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [17276 Valid, 55145 Invalid, 20 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:02:49,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21285 states.
[2023-12-25 21:02:49,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21285 to 10916.
[2023-12-25 21:02:49,277 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10916 states, 10915 states have (on average 1.6666972056802565) internal successors, (18192), 10915 states have internal predecessors, (18192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:49,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10916 states to 10916 states and 18192 transitions.
[2023-12-25 21:02:49,298 INFO  L78                 Accepts]: Start accepts. Automaton has 10916 states and 18192 transitions. Word has length 493
[2023-12-25 21:02:49,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:49,300 INFO  L495      AbstractCegarLoop]: Abstraction has 10916 states and 18192 transitions.
[2023-12-25 21:02:49,300 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 123.25) internal successors, (493), 4 states have internal predecessors, (493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:49,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 10916 states and 18192 transitions.
[2023-12-25 21:02:49,308 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 495
[2023-12-25 21:02:49,308 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:49,308 INFO  L195           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-25 21:02:49,308 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-12-25 21:02:49,309 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:49,309 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:49,309 INFO  L85        PathProgramCache]: Analyzing trace with hash 1875161366, now seen corresponding path program 1 times
[2023-12-25 21:02:49,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:49,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637945391]
[2023-12-25 21:02:49,309 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:49,310 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:49,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:02:50,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:02:50,403 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:02:50,403 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637945391]
[2023-12-25 21:02:50,403 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637945391] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:02:50,403 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:02:50,403 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 21:02:50,403 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517376362]
[2023-12-25 21:02:50,404 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:02:50,404 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:02:50,404 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:02:50,405 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:02:50,405 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:02:50,405 INFO  L87              Difference]: Start difference. First operand 10916 states and 18192 transitions. Second operand  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:51,172 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:02:51,172 INFO  L93              Difference]: Finished difference Result 31848 states and 53079 transitions.
[2023-12-25 21:02:51,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:02:51,174 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 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 494
[2023-12-25 21:02:51,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:02:51,219 INFO  L225             Difference]: With dead ends: 31848
[2023-12-25 21:02:51,219 INFO  L226             Difference]: Without dead ends: 21467
[2023-12-25 21:02:51,238 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:02:51,239 INFO  L413           NwaCegarLoop]: 18479 mSDtfsCounter, 69844 mSDsluCounter, 53619 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69844 SdHoareTripleChecker+Valid, 72098 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:02:51,239 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [69844 Valid, 72098 Invalid, 30 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:02:51,263 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21467 states.
[2023-12-25 21:02:51,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21467 to 11101.
[2023-12-25 21:02:51,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6665765765765765) internal successors, (18499), 11100 states have internal predecessors, (18499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:51,495 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18499 transitions.
[2023-12-25 21:02:51,495 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18499 transitions. Word has length 494
[2023-12-25 21:02:51,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:02:51,496 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18499 transitions.
[2023-12-25 21:02:51,496 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 82.33333333333333) internal successors, (494), 5 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:02:51,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18499 transitions.
[2023-12-25 21:02:51,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7390
[2023-12-25 21:02:51,858 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:02:51,862 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:02:51,862 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-12-25 21:02:51,862 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:02:51,863 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:02:51,864 INFO  L85        PathProgramCache]: Analyzing trace with hash 1916709481, now seen corresponding path program 1 times
[2023-12-25 21:02:51,864 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:02:51,865 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703887503]
[2023-12-25 21:02:51,865 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:51,866 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:02:52,812 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:02:52,813 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735894988]
[2023-12-25 21:02:52,814 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:02:52,815 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:02:52,815 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:02:52,818 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:02:52,821 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-12-25 21:03:02,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:02,821 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37068 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:03:03,086 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:03:05,502 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:03:05,502 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:03:05,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:03:05,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703887503]
[2023-12-25 21:03:05,503 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:03:05,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735894988]
[2023-12-25 21:03:05,503 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [735894988] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:03:05,503 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:03:05,504 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:03:05,505 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85842561]
[2023-12-25 21:03:05,505 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:03:05,513 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:03:05,513 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:03:05,520 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:03:05,520 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:03:05,521 INFO  L87              Difference]: Start difference. First operand 11101 states and 18499 transitions. Second operand  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:11,032 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:11,033 INFO  L93              Difference]: Finished difference Result 22059 states and 36759 transitions.
[2023-12-25 21:03:11,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:03:11,038 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 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 7389
[2023-12-25 21:03:11,041 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:11,066 INFO  L225             Difference]: With dead ends: 22059
[2023-12-25 21:03:11,066 INFO  L226             Difference]: Without dead ends: 11678
[2023-12-25 21:03:11,083 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7389 GetRequests, 7386 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:03:11,084 INFO  L413           NwaCegarLoop]: 14076 mSDtfsCounter, 34605 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 6064 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34605 SdHoareTripleChecker+Valid, 15538 SdHoareTripleChecker+Invalid, 6064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:11,084 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34605 Valid, 15538 Invalid, 6064 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6064 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time]
[2023-12-25 21:03:11,102 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11678 states.
[2023-12-25 21:03:11,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11678 to 11101.
[2023-12-25 21:03:11,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6664864864864866) internal successors, (18498), 11100 states have internal predecessors, (18498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:11,292 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18498 transitions.
[2023-12-25 21:03:11,292 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18498 transitions. Word has length 7389
[2023-12-25 21:03:11,294 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:11,294 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18498 transitions.
[2023-12-25 21:03:11,296 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.25) internal successors, (7389), 3 states have internal predecessors, (7389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:11,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18498 transitions.
[2023-12-25 21:03:11,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7391
[2023-12-25 21:03:11,698 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:03:11,701 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:03:11,802 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2023-12-25 21:03:11,908 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2023-12-25 21:03:11,908 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:03:11,910 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:03:11,912 INFO  L85        PathProgramCache]: Analyzing trace with hash 880036465, now seen corresponding path program 1 times
[2023-12-25 21:03:11,912 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:03:11,912 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441554302]
[2023-12-25 21:03:11,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:11,914 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:03:12,780 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:03:12,781 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1952210981]
[2023-12-25 21:03:12,782 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:12,783 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:12,783 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:03:12,785 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:03:12,787 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-12-25 21:03:21,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:22,181 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37069 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:03:22,328 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:03:24,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:03:24,619 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:03:24,619 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:03:24,619 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441554302]
[2023-12-25 21:03:24,619 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:03:24,619 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952210981]
[2023-12-25 21:03:24,619 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952210981] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:03:24,619 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:03:24,620 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:03:24,621 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194893910]
[2023-12-25 21:03:24,621 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:03:24,627 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:03:24,627 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:03:24,634 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:03:24,634 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:03:24,637 INFO  L87              Difference]: Start difference. First operand 11101 states and 18498 transitions. Second operand  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:29,991 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:29,991 INFO  L93              Difference]: Finished difference Result 22072 states and 36778 transitions.
[2023-12-25 21:03:29,992 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:03:29,993 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 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 7390
[2023-12-25 21:03:29,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:30,018 INFO  L225             Difference]: With dead ends: 22072
[2023-12-25 21:03:30,018 INFO  L226             Difference]: Without dead ends: 11691
[2023-12-25 21:03:30,030 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7390 GetRequests, 7387 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:03:30,031 INFO  L413           NwaCegarLoop]: 14095 mSDtfsCounter, 34594 mSDsluCounter, 1482 mSDsCounter, 0 mSdLazyCounter, 6066 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34594 SdHoareTripleChecker+Valid, 15577 SdHoareTripleChecker+Invalid, 6066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:30,031 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34594 Valid, 15577 Invalid, 6066 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6066 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time]
[2023-12-25 21:03:30,044 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11691 states.
[2023-12-25 21:03:30,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11691 to 11101.
[2023-12-25 21:03:30,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6663963963963964) internal successors, (18497), 11100 states have internal predecessors, (18497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:30,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18497 transitions.
[2023-12-25 21:03:30,193 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18497 transitions. Word has length 7390
[2023-12-25 21:03:30,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:30,195 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18497 transitions.
[2023-12-25 21:03:30,197 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.5) internal successors, (7390), 3 states have internal predecessors, (7390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:30,197 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18497 transitions.
[2023-12-25 21:03:30,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7392
[2023-12-25 21:03:30,623 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:03:30,627 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:03:30,724 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2023-12-25 21:03:30,832 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2023-12-25 21:03:30,832 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:03:30,833 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:03:30,835 INFO  L85        PathProgramCache]: Analyzing trace with hash 2031123590, now seen corresponding path program 1 times
[2023-12-25 21:03:30,835 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:03:30,835 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835097133]
[2023-12-25 21:03:30,836 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:30,836 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:03:31,553 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:03:31,554 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329665770]
[2023-12-25 21:03:31,555 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:31,556 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:31,556 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:03:31,557 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:03:31,559 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-12-25 21:03:40,719 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:40,960 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37070 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:03:41,227 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:03:43,277 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:03:43,277 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:03:43,278 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:03:43,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835097133]
[2023-12-25 21:03:43,278 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:03:43,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329665770]
[2023-12-25 21:03:43,278 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [329665770] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:03:43,278 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:03:43,279 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:03:43,279 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944525797]
[2023-12-25 21:03:43,279 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:03:43,286 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:03:43,286 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:03:43,293 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:03:43,293 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:03:43,295 INFO  L87              Difference]: Start difference. First operand 11101 states and 18497 transitions. Second operand  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:48,455 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:03:48,455 INFO  L93              Difference]: Finished difference Result 22088 states and 36802 transitions.
[2023-12-25 21:03:48,456 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:03:48,457 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 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 7391
[2023-12-25 21:03:48,458 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:03:48,471 INFO  L225             Difference]: With dead ends: 22088
[2023-12-25 21:03:48,471 INFO  L226             Difference]: Without dead ends: 11707
[2023-12-25 21:03:48,478 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7391 GetRequests, 7388 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:03:48,480 INFO  L413           NwaCegarLoop]: 14119 mSDtfsCounter, 34581 mSDsluCounter, 1507 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34581 SdHoareTripleChecker+Valid, 15626 SdHoareTripleChecker+Invalid, 6068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:03:48,480 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34581 Valid, 15626 Invalid, 6068 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6068 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 21:03:48,493 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11707 states.
[2023-12-25 21:03:48,598 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11707 to 11101.
[2023-12-25 21:03:48,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6663063063063064) internal successors, (18496), 11100 states have internal predecessors, (18496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:48,628 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18496 transitions.
[2023-12-25 21:03:48,628 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18496 transitions. Word has length 7391
[2023-12-25 21:03:48,630 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:03:48,631 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18496 transitions.
[2023-12-25 21:03:48,633 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1847.75) internal successors, (7391), 3 states have internal predecessors, (7391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:03:48,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18496 transitions.
[2023-12-25 21:03:49,044 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7393
[2023-12-25 21:03:49,044 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:03:49,048 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:03:49,151 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-12-25 21:03:49,276 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:49,276 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:03:49,277 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:03:49,279 INFO  L85        PathProgramCache]: Analyzing trace with hash -428473708, now seen corresponding path program 1 times
[2023-12-25 21:03:49,279 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:03:49,279 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763523434]
[2023-12-25 21:03:49,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:49,279 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:03:50,085 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:03:50,085 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321397758]
[2023-12-25 21:03:50,087 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:03:50,087 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:03:50,087 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:03:50,089 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:03:50,091 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-12-25 21:03:59,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:03:59,432 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37071 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:03:59,594 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:01,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:01,753 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:01,753 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:01,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763523434]
[2023-12-25 21:04:01,753 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:01,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321397758]
[2023-12-25 21:04:01,754 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321397758] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:01,754 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:01,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:04:01,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798914047]
[2023-12-25 21:04:01,755 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:01,762 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:04:01,762 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:01,769 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:04:01,770 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:04:01,772 INFO  L87              Difference]: Start difference. First operand 11101 states and 18496 transitions. Second operand  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:06,996 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:04:06,996 INFO  L93              Difference]: Finished difference Result 22095 states and 36811 transitions.
[2023-12-25 21:04:06,997 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:04:06,998 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 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 7392
[2023-12-25 21:04:07,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:04:07,016 INFO  L225             Difference]: With dead ends: 22095
[2023-12-25 21:04:07,016 INFO  L226             Difference]: Without dead ends: 11714
[2023-12-25 21:04:07,024 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7392 GetRequests, 7389 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:04:07,025 INFO  L413           NwaCegarLoop]: 14128 mSDtfsCounter, 34574 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 6070 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34574 SdHoareTripleChecker+Valid, 15645 SdHoareTripleChecker+Invalid, 6070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:04:07,025 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34574 Valid, 15645 Invalid, 6070 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6070 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 21:04:07,038 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11714 states.
[2023-12-25 21:04:07,145 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11714 to 11101.
[2023-12-25 21:04:07,158 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6662162162162162) internal successors, (18495), 11100 states have internal predecessors, (18495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:07,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18495 transitions.
[2023-12-25 21:04:07,177 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18495 transitions. Word has length 7392
[2023-12-25 21:04:07,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:04:07,179 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18495 transitions.
[2023-12-25 21:04:07,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.0) internal successors, (7392), 3 states have internal predecessors, (7392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:07,181 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18495 transitions.
[2023-12-25 21:04:07,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7394
[2023-12-25 21:04:07,610 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:07,614 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:04:07,750 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-12-25 21:04:07,824 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:07,825 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:07,825 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:07,828 INFO  L85        PathProgramCache]: Analyzing trace with hash 1044960087, now seen corresponding path program 1 times
[2023-12-25 21:04:07,828 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:07,828 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11072478]
[2023-12-25 21:04:07,829 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:07,829 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:08,516 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:08,516 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557642545]
[2023-12-25 21:04:08,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:08,518 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:08,518 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:08,519 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:08,522 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-12-25 21:04:17,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:18,077 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37072 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:04:18,198 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:20,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:20,242 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:20,242 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:20,242 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11072478]
[2023-12-25 21:04:20,243 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:20,243 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557642545]
[2023-12-25 21:04:20,243 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [557642545] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:20,243 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:20,244 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:04:20,244 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310882676]
[2023-12-25 21:04:20,244 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:20,253 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:04:20,253 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:20,259 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:04:20,259 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:04:20,260 INFO  L87              Difference]: Start difference. First operand 11101 states and 18495 transitions. Second operand  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:25,431 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:04:25,432 INFO  L93              Difference]: Finished difference Result 22099 states and 36815 transitions.
[2023-12-25 21:04:25,432 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:04:25,434 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 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 7393
[2023-12-25 21:04:25,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:04:25,445 INFO  L225             Difference]: With dead ends: 22099
[2023-12-25 21:04:25,445 INFO  L226             Difference]: Without dead ends: 11718
[2023-12-25 21:04:25,453 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7393 GetRequests, 7390 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:04:25,454 INFO  L413           NwaCegarLoop]: 14132 mSDtfsCounter, 34569 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 6072 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34569 SdHoareTripleChecker+Valid, 15654 SdHoareTripleChecker+Invalid, 6072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:04:25,455 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34569 Valid, 15654 Invalid, 6072 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6072 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 21:04:25,471 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11718 states.
[2023-12-25 21:04:25,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11718 to 11101.
[2023-12-25 21:04:25,601 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6661261261261262) internal successors, (18494), 11100 states have internal predecessors, (18494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:25,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18494 transitions.
[2023-12-25 21:04:25,617 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18494 transitions. Word has length 7393
[2023-12-25 21:04:25,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:04:25,619 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18494 transitions.
[2023-12-25 21:04:25,621 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.25) internal successors, (7393), 3 states have internal predecessors, (7393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:25,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18494 transitions.
[2023-12-25 21:04:26,016 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7395
[2023-12-25 21:04:26,016 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:26,020 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:04:26,143 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-12-25 21:04:26,240 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9
[2023-12-25 21:04:26,240 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:26,241 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:26,243 INFO  L85        PathProgramCache]: Analyzing trace with hash -549592289, now seen corresponding path program 1 times
[2023-12-25 21:04:26,243 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:26,243 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046382749]
[2023-12-25 21:04:26,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:26,244 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:26,885 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:26,885 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1630723886]
[2023-12-25 21:04:26,887 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:26,887 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:26,888 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:26,889 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:26,891 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2023-12-25 21:04:36,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:36,287 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37073 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:04:36,396 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:38,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:38,393 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:38,393 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:38,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046382749]
[2023-12-25 21:04:38,393 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:38,393 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630723886]
[2023-12-25 21:04:38,394 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630723886] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:38,394 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:38,395 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:04:38,395 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921063554]
[2023-12-25 21:04:38,395 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:38,402 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:04:38,402 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:38,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:04:38,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:04:38,409 INFO  L87              Difference]: Start difference. First operand 11101 states and 18494 transitions. Second operand  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:43,567 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:04:43,567 INFO  L93              Difference]: Finished difference Result 22124 states and 36854 transitions.
[2023-12-25 21:04:43,568 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:04:43,569 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 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 7394
[2023-12-25 21:04:43,570 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:04:43,581 INFO  L225             Difference]: With dead ends: 22124
[2023-12-25 21:04:43,581 INFO  L226             Difference]: Without dead ends: 11743
[2023-12-25 21:04:43,590 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7394 GetRequests, 7391 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:04:43,591 INFO  L413           NwaCegarLoop]: 14171 mSDtfsCounter, 34550 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 6074 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34550 SdHoareTripleChecker+Valid, 15733 SdHoareTripleChecker+Invalid, 6074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6074 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:04:43,591 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34550 Valid, 15733 Invalid, 6074 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6074 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 21:04:43,606 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11743 states.
[2023-12-25 21:04:43,724 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 11101.
[2023-12-25 21:04:43,737 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.666036036036036) internal successors, (18493), 11100 states have internal predecessors, (18493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:43,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18493 transitions.
[2023-12-25 21:04:43,752 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18493 transitions. Word has length 7394
[2023-12-25 21:04:43,754 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:04:43,755 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18493 transitions.
[2023-12-25 21:04:43,756 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.5) internal successors, (7394), 3 states have internal predecessors, (7394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:04:43,756 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18493 transitions.
[2023-12-25 21:04:44,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7396
[2023-12-25 21:04:44,088 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:04:44,090 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:04:44,195 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0
[2023-12-25 21:04:44,312 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:44,312 INFO  L420      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:04:44,314 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:04:44,316 INFO  L85        PathProgramCache]: Analyzing trace with hash -1445315828, now seen corresponding path program 1 times
[2023-12-25 21:04:44,316 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:04:44,316 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725367534]
[2023-12-25 21:04:44,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:44,317 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:04:45,090 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:04:45,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729236093]
[2023-12-25 21:04:45,093 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:04:45,093 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:04:45,093 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:04:45,094 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:04:45,101 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2023-12-25 21:04:54,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:04:54,407 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37074 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:04:54,501 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:04:56,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:04:56,523 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:04:56,523 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:04:56,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725367534]
[2023-12-25 21:04:56,523 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:04:56,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [729236093]
[2023-12-25 21:04:56,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [729236093] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:04:56,523 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:04:56,524 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:04:56,524 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100485177]
[2023-12-25 21:04:56,524 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:04:56,530 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:04:56,530 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:04:56,536 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:04:56,536 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:04:56,538 INFO  L87              Difference]: Start difference. First operand 11101 states and 18493 transitions. Second operand  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:01,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:05:01,661 INFO  L93              Difference]: Finished difference Result 22143 states and 36883 transitions.
[2023-12-25 21:05:01,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:05:01,663 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 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 7395
[2023-12-25 21:05:01,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:05:01,677 INFO  L225             Difference]: With dead ends: 22143
[2023-12-25 21:05:01,678 INFO  L226             Difference]: Without dead ends: 11762
[2023-12-25 21:05:01,686 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7395 GetRequests, 7392 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:05:01,687 INFO  L413           NwaCegarLoop]: 14200 mSDtfsCounter, 34535 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 6076 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34535 SdHoareTripleChecker+Valid, 15792 SdHoareTripleChecker+Invalid, 6076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-25 21:05:01,687 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34535 Valid, 15792 Invalid, 6076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 6076 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-25 21:05:01,700 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11762 states.
[2023-12-25 21:05:01,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11762 to 11101.
[2023-12-25 21:05:01,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.665945945945946) internal successors, (18492), 11100 states have internal predecessors, (18492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:01,831 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18492 transitions.
[2023-12-25 21:05:01,832 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18492 transitions. Word has length 7395
[2023-12-25 21:05:01,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:05:01,834 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18492 transitions.
[2023-12-25 21:05:01,836 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1848.75) internal successors, (7395), 3 states have internal predecessors, (7395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:01,836 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18492 transitions.
[2023-12-25 21:05:02,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7397
[2023-12-25 21:05:02,177 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:05:02,180 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:05:02,291 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0
[2023-12-25 21:05:02,386 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:02,387 INFO  L420      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:05:02,388 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:05:02,390 INFO  L85        PathProgramCache]: Analyzing trace with hash 342037288, now seen corresponding path program 1 times
[2023-12-25 21:05:02,390 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:05:02,390 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459070848]
[2023-12-25 21:05:02,390 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:02,390 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:05:03,041 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:05:03,042 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [789657719]
[2023-12-25 21:05:03,043 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:03,043 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:03,044 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:05:03,045 INFO  L229       MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:05:03,047 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process
[2023-12-25 21:05:13,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:05:13,302 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37075 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-25 21:05:13,428 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:05:15,625 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:05:15,625 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:05:15,625 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:05:15,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459070848]
[2023-12-25 21:05:15,625 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:05:15,625 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789657719]
[2023-12-25 21:05:15,626 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [789657719] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:05:15,626 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:05:15,626 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-25 21:05:15,626 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537404044]
[2023-12-25 21:05:15,626 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:05:15,632 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-25 21:05:15,632 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:05:15,636 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-25 21:05:15,636 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-25 21:05:15,637 INFO  L87              Difference]: Start difference. First operand 11101 states and 18492 transitions. Second operand  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:20,802 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:05:20,802 INFO  L93              Difference]: Finished difference Result 22156 states and 36902 transitions.
[2023-12-25 21:05:20,803 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-25 21:05:20,804 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 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 7396
[2023-12-25 21:05:20,805 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:05:20,812 INFO  L225             Difference]: With dead ends: 22156
[2023-12-25 21:05:20,812 INFO  L226             Difference]: Without dead ends: 11775
[2023-12-25 21:05:20,816 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7396 GetRequests, 7393 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:05:20,816 INFO  L413           NwaCegarLoop]: 14219 mSDtfsCounter, 34524 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 6078 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34524 SdHoareTripleChecker+Valid, 15831 SdHoareTripleChecker+Invalid, 6078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6078 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time
[2023-12-25 21:05:20,817 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34524 Valid, 15831 Invalid, 6078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6078 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time]
[2023-12-25 21:05:20,828 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11775 states.
[2023-12-25 21:05:20,930 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11101.
[2023-12-25 21:05:20,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11101 states, 11100 states have (on average 1.6658558558558558) internal successors, (18491), 11100 states have internal predecessors, (18491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:20,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11101 states to 11101 states and 18491 transitions.
[2023-12-25 21:05:20,959 INFO  L78                 Accepts]: Start accepts. Automaton has 11101 states and 18491 transitions. Word has length 7396
[2023-12-25 21:05:20,960 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:05:20,960 INFO  L495      AbstractCegarLoop]: Abstraction has 11101 states and 18491 transitions.
[2023-12-25 21:05:20,962 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 1849.0) internal successors, (7396), 3 states have internal predecessors, (7396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:20,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 11101 states and 18491 transitions.
[2023-12-25 21:05:21,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7398
[2023-12-25 21:05:21,291 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:05:21,293 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:05:21,411 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0
[2023-12-25 21:05:21,494 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2023-12-25 21:05:21,495 INFO  L420      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:05:21,495 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:05:21,497 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133202391, now seen corresponding path program 1 times
[2023-12-25 21:05:21,497 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:05:21,497 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584498196]
[2023-12-25 21:05:21,498 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:21,498 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:05:22,218 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:05:22,219 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [931317746]
[2023-12-25 21:05:22,221 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:22,221 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:22,221 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:05:22,222 INFO  L229       MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:05:22,225 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process
[2023-12-25 21:05:31,892 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:05:32,149 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37076 conjuncts, 23 conjunts are in the unsatisfiable core
[2023-12-25 21:05:32,273 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:05:36,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:05:36,097 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:05:36,097 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:05:36,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584498196]
[2023-12-25 21:05:36,097 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:05:36,097 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931317746]
[2023-12-25 21:05:36,097 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [931317746] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:05:36,097 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:05:36,098 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2023-12-25 21:05:36,098 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614953360]
[2023-12-25 21:05:36,098 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:05:36,102 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-25 21:05:36,102 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:05:36,107 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-25 21:05:36,107 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:05:36,109 INFO  L87              Difference]: Start difference. First operand 11101 states and 18491 transitions. Second operand  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:37,393 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:05:37,393 INFO  L93              Difference]: Finished difference Result 47827 states and 79676 transitions.
[2023-12-25 21:05:37,394 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2023-12-25 21:05:37,395 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 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 7397
[2023-12-25 21:05:37,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:05:37,440 INFO  L225             Difference]: With dead ends: 47827
[2023-12-25 21:05:37,440 INFO  L226             Difference]: Without dead ends: 37446
[2023-12-25 21:05:37,456 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7419 GetRequests, 7397 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=413, Unknown=0, NotChecked=0, Total=552
[2023-12-25 21:05:37,457 INFO  L413           NwaCegarLoop]: 26386 mSDtfsCounter, 125671 mSDsluCounter, 134238 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125671 SdHoareTripleChecker+Valid, 160624 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-25 21:05:37,457 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [125671 Valid, 160624 Invalid, 117 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-25 21:05:37,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37446 states.
[2023-12-25 21:05:37,824 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37446 to 16526.
[2023-12-25 21:05:37,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16526 states, 16525 states have (on average 1.6660816944024206) internal successors, (27532), 16525 states have internal predecessors, (27532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:37,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16526 states to 16526 states and 27532 transitions.
[2023-12-25 21:05:37,866 INFO  L78                 Accepts]: Start accepts. Automaton has 16526 states and 27532 transitions. Word has length 7397
[2023-12-25 21:05:37,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:05:37,869 INFO  L495      AbstractCegarLoop]: Abstraction has 16526 states and 27532 transitions.
[2023-12-25 21:05:37,870 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 821.8888888888889) internal successors, (7397), 9 states have internal predecessors, (7397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:37,871 INFO  L276                IsEmpty]: Start isEmpty. Operand 16526 states and 27532 transitions.
[2023-12-25 21:05:38,219 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7399
[2023-12-25 21:05:38,219 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:05:38,221 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:05:38,372 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0
[2023-12-25 21:05:38,422 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-12-25 21:05:38,422 INFO  L420      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:05:38,422 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:05:38,423 INFO  L85        PathProgramCache]: Analyzing trace with hash -1575431689, now seen corresponding path program 1 times
[2023-12-25 21:05:38,423 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:05:38,424 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511642960]
[2023-12-25 21:05:38,424 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:38,425 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:05:39,044 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:05:39,045 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [301682866]
[2023-12-25 21:05:39,046 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:39,048 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:39,048 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:05:39,049 INFO  L229       MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:05:39,052 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process
[2023-12-25 21:05:48,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:05:48,546 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37080 conjuncts, 17 conjunts are in the unsatisfiable core
[2023-12-25 21:05:48,641 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:05:49,163 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:05:49,163 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:05:49,163 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:05:49,163 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511642960]
[2023-12-25 21:05:49,164 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:05:49,164 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301682866]
[2023-12-25 21:05:49,164 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [301682866] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:05:49,164 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:05:49,164 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:05:49,164 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319693575]
[2023-12-25 21:05:49,164 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:05:49,168 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:05:49,168 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:05:49,172 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:05:49,172 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:05:49,172 INFO  L87              Difference]: Start difference. First operand 16526 states and 27532 transitions. Second operand  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:49,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:05:49,737 INFO  L93              Difference]: Finished difference Result 42882 states and 71439 transitions.
[2023-12-25 21:05:49,737 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-25 21:05:49,739 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 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 7398
[2023-12-25 21:05:49,742 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:05:49,861 INFO  L225             Difference]: With dead ends: 42882
[2023-12-25 21:05:49,861 INFO  L226             Difference]: Without dead ends: 26891
[2023-12-25 21:05:49,868 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7406 GetRequests, 7395 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156
[2023-12-25 21:05:49,869 INFO  L413           NwaCegarLoop]: 26386 mSDtfsCounter, 44126 mSDsluCounter, 97305 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44126 SdHoareTripleChecker+Valid, 123691 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-25 21:05:49,869 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [44126 Valid, 123691 Invalid, 54 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-25 21:05:49,885 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26891 states.
[2023-12-25 21:05:50,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26891 to 16528.
[2023-12-25 21:05:50,059 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 16528 states, 16527 states have (on average 1.6660010891268833) internal successors, (27534), 16527 states have internal predecessors, (27534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:50,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16528 states to 16528 states and 27534 transitions.
[2023-12-25 21:05:50,076 INFO  L78                 Accepts]: Start accepts. Automaton has 16528 states and 27534 transitions. Word has length 7398
[2023-12-25 21:05:50,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:05:50,078 INFO  L495      AbstractCegarLoop]: Abstraction has 16528 states and 27534 transitions.
[2023-12-25 21:05:50,080 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1056.857142857143) internal successors, (7398), 7 states have internal predecessors, (7398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:05:50,080 INFO  L276                IsEmpty]: Start isEmpty. Operand 16528 states and 27534 transitions.
[2023-12-25 21:05:50,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7400
[2023-12-25 21:05:50,439 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:05:50,441 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:05:50,559 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0
[2023-12-25 21:05:50,641 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2023-12-25 21:05:50,642 INFO  L420      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:05:50,642 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:05:50,643 INFO  L85        PathProgramCache]: Analyzing trace with hash 1758942673, now seen corresponding path program 1 times
[2023-12-25 21:05:50,643 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:05:50,643 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643994502]
[2023-12-25 21:05:50,644 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:50,644 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:05:51,229 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:05:51,229 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1155293221]
[2023-12-25 21:05:51,231 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:05:51,231 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:05:51,231 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:05:51,232 INFO  L229       MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:05:51,233 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process
[2023-12-25 21:06:00,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:06:00,640 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37083 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-25 21:06:00,721 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:06:02,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:06:02,131 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:06:02,131 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:06:02,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643994502]
[2023-12-25 21:06:02,132 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:06:02,132 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155293221]
[2023-12-25 21:06:02,132 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155293221] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:06:02,132 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:06:02,133 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-25 21:06:02,133 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207732568]
[2023-12-25 21:06:02,133 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:06:02,138 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-25 21:06:02,139 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:06:02,143 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-25 21:06:02,143 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-25 21:06:02,144 INFO  L87              Difference]: Start difference. First operand 16528 states and 27534 transitions. Second operand  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:12,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:06:12,202 INFO  L93              Difference]: Finished difference Result 38013 states and 63329 transitions.
[2023-12-25 21:06:12,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-25 21:06:12,203 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 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 7399
[2023-12-25 21:06:12,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:06:12,223 INFO  L225             Difference]: With dead ends: 38013
[2023-12-25 21:06:12,223 INFO  L226             Difference]: Without dead ends: 22020
[2023-12-25 21:06:12,233 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7400 GetRequests, 7395 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:06:12,233 INFO  L413           NwaCegarLoop]: 25497 mSDtfsCounter, 8800 mSDsluCounter, 59348 mSDsCounter, 0 mSdLazyCounter, 15292 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8800 SdHoareTripleChecker+Valid, 84845 SdHoareTripleChecker+Invalid, 15292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time
[2023-12-25 21:06:12,234 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [8800 Valid, 84845 Invalid, 15292 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [0 Valid, 15292 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time]
[2023-12-25 21:06:12,255 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22020 states.
[2023-12-25 21:06:12,417 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22020 to 17070.
[2023-12-25 21:06:12,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 17070 states, 17069 states have (on average 1.665885523463589) internal successors, (28435), 17069 states have internal predecessors, (28435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:12,452 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 17070 states to 17070 states and 28435 transitions.
[2023-12-25 21:06:12,453 INFO  L78                 Accepts]: Start accepts. Automaton has 17070 states and 28435 transitions. Word has length 7399
[2023-12-25 21:06:12,455 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:06:12,456 INFO  L495      AbstractCegarLoop]: Abstraction has 17070 states and 28435 transitions.
[2023-12-25 21:06:12,457 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 1479.8) internal successors, (7399), 5 states have internal predecessors, (7399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:12,458 INFO  L276                IsEmpty]: Start isEmpty. Operand 17070 states and 28435 transitions.
[2023-12-25 21:06:12,810 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7401
[2023-12-25 21:06:12,810 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:06:12,812 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:06:12,919 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0
[2023-12-25 21:06:13,012 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15
[2023-12-25 21:06:13,013 INFO  L420      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:06:13,013 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:06:13,014 INFO  L85        PathProgramCache]: Analyzing trace with hash 473957739, now seen corresponding path program 1 times
[2023-12-25 21:06:13,014 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:06:13,014 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616530722]
[2023-12-25 21:06:13,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:06:13,015 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:06:13,683 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:06:13,683 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [413084587]
[2023-12-25 21:06:13,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:06:13,685 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:06:13,685 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:06:13,686 INFO  L229       MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:06:13,688 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process
[2023-12-25 21:06:22,794 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:06:23,021 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37086 conjuncts, 15 conjunts are in the unsatisfiable core
[2023-12-25 21:06:23,097 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:06:30,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:06:30,793 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:06:30,793 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:06:30,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616530722]
[2023-12-25 21:06:30,793 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:06:30,793 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413084587]
[2023-12-25 21:06:30,793 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [413084587] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:06:30,793 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:06:30,794 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2023-12-25 21:06:30,794 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617724643]
[2023-12-25 21:06:30,794 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:06:30,798 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-25 21:06:30,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:06:30,801 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-25 21:06:30,801 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2023-12-25 21:06:30,802 INFO  L87              Difference]: Start difference. First operand 17070 states and 28435 transitions. Second operand  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:44,613 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:06:44,613 INFO  L93              Difference]: Finished difference Result 44592 states and 74286 transitions.
[2023-12-25 21:06:44,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2023-12-25 21:06:44,615 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 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 7400
[2023-12-25 21:06:44,620 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:06:44,646 INFO  L225             Difference]: With dead ends: 44592
[2023-12-25 21:06:44,647 INFO  L226             Difference]: Without dead ends: 28057
[2023-12-25 21:06:44,662 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7401 GetRequests, 7394 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-12-25 21:06:44,663 INFO  L413           NwaCegarLoop]: 25497 mSDtfsCounter, 6944 mSDsluCounter, 79944 mSDsCounter, 0 mSdLazyCounter, 22016 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6944 SdHoareTripleChecker+Valid, 105441 SdHoareTripleChecker+Invalid, 22018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.2s IncrementalHoareTripleChecker+Time
[2023-12-25 21:06:44,663 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [6944 Valid, 105441 Invalid, 22018 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 22016 Invalid, 0 Unknown, 0 Unchecked, 13.2s Time]
[2023-12-25 21:06:44,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28057 states.
[2023-12-25 21:06:44,934 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28057 to 23715.
[2023-12-25 21:06:44,955 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 23715 states, 23714 states have (on average 1.665767057434427) internal successors, (39502), 23714 states have internal predecessors, (39502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:44,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 23715 states to 23715 states and 39502 transitions.
[2023-12-25 21:06:44,983 INFO  L78                 Accepts]: Start accepts. Automaton has 23715 states and 39502 transitions. Word has length 7400
[2023-12-25 21:06:44,987 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:06:44,987 INFO  L495      AbstractCegarLoop]: Abstraction has 23715 states and 39502 transitions.
[2023-12-25 21:06:44,988 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 1057.142857142857) internal successors, (7400), 7 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:06:44,988 INFO  L276                IsEmpty]: Start isEmpty. Operand 23715 states and 39502 transitions.
[2023-12-25 21:06:45,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7401
[2023-12-25 21:06:45,337 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:06:45,338 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:06:45,451 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0
[2023-12-25 21:06:45,539 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2023-12-25 21:06:45,539 INFO  L420      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:06:45,540 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:06:45,541 INFO  L85        PathProgramCache]: Analyzing trace with hash 927904237, now seen corresponding path program 1 times
[2023-12-25 21:06:45,541 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:06:45,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174966047]
[2023-12-25 21:06:45,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:06:45,542 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:06:46,336 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:06:46,336 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155286589]
[2023-12-25 21:06:46,338 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:06:46,338 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:06:46,338 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:06:46,339 INFO  L229       MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:06:46,342 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process
[2023-12-25 21:06:55,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:06:56,191 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37087 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-25 21:06:56,265 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:07:02,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:07:02,527 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:07:02,527 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:07:02,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174966047]
[2023-12-25 21:07:02,527 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:07:02,527 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155286589]
[2023-12-25 21:07:02,527 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [155286589] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:07:02,527 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:07:02,528 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2023-12-25 21:07:02,528 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709381764]
[2023-12-25 21:07:02,528 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:07:02,533 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-25 21:07:02,534 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:07:02,538 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-25 21:07:02,538 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2023-12-25 21:07:02,540 INFO  L87              Difference]: Start difference. First operand 23715 states and 39502 transitions. Second operand  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:07:15,338 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:07:15,339 INFO  L93              Difference]: Finished difference Result 51846 states and 86362 transitions.
[2023-12-25 21:07:15,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2023-12-25 21:07:15,342 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 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 7400
[2023-12-25 21:07:15,346 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:07:15,367 INFO  L225             Difference]: With dead ends: 51846
[2023-12-25 21:07:15,368 INFO  L226             Difference]: Without dead ends: 28666
[2023-12-25 21:07:15,383 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7401 GetRequests, 7395 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-25 21:07:15,383 INFO  L413           NwaCegarLoop]: 19971 mSDtfsCounter, 24206 mSDsluCounter, 53172 mSDsCounter, 0 mSdLazyCounter, 24275 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24206 SdHoareTripleChecker+Valid, 73143 SdHoareTripleChecker+Invalid, 24277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time
[2023-12-25 21:07:15,383 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [24206 Valid, 73143 Invalid, 24277 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [2 Valid, 24275 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time]
[2023-12-25 21:07:15,409 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28666 states.
[2023-12-25 21:07:15,599 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28666 to 26492.
[2023-12-25 21:07:15,621 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26492 states, 26491 states have (on average 1.6657732814918274) internal successors, (44128), 26491 states have internal predecessors, (44128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:07:15,650 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26492 states to 26492 states and 44128 transitions.
[2023-12-25 21:07:15,650 INFO  L78                 Accepts]: Start accepts. Automaton has 26492 states and 44128 transitions. Word has length 7400
[2023-12-25 21:07:15,653 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:07:15,653 INFO  L495      AbstractCegarLoop]: Abstraction has 26492 states and 44128 transitions.
[2023-12-25 21:07:15,654 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1233.3333333333333) internal successors, (7400), 6 states have internal predecessors, (7400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:07:15,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 26492 states and 44128 transitions.
[2023-12-25 21:07:15,943 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7402
[2023-12-25 21:07:15,943 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:07:15,945 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:07:16,056 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0
[2023-12-25 21:07:16,160 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2023-12-25 21:07:16,160 INFO  L420      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:07:16,161 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:07:16,162 INFO  L85        PathProgramCache]: Analyzing trace with hash -382151035, now seen corresponding path program 1 times
[2023-12-25 21:07:16,162 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:07:16,162 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19147613]
[2023-12-25 21:07:16,163 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:07:16,163 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:07:16,826 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:07:16,827 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2144035106]
[2023-12-25 21:07:16,828 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:07:16,828 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:07:16,828 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:07:16,830 INFO  L229       MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:07:16,832 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process
[2023-12-25 21:07:26,732 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:07:27,002 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37089 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-12-25 21:07:27,111 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:07:30,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:07:30,261 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:07:30,261 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:07:30,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19147613]
[2023-12-25 21:07:30,261 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:07:30,261 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144035106]
[2023-12-25 21:07:30,261 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144035106] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:07:30,261 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:07:30,262 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2023-12-25 21:07:30,262 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982158795]
[2023-12-25 21:07:30,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:07:30,267 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-12-25 21:07:30,267 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:07:30,271 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-12-25 21:07:30,271 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182
[2023-12-25 21:07:30,272 INFO  L87              Difference]: Start difference. First operand 26492 states and 44128 transitions. Second operand  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:13,876 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:09:13,876 INFO  L93              Difference]: Finished difference Result 219607 states and 365769 transitions.
[2023-12-25 21:09:13,876 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2023-12-25 21:09:13,878 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 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 7401
[2023-12-25 21:09:13,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:09:14,080 INFO  L225             Difference]: With dead ends: 219607
[2023-12-25 21:09:14,080 INFO  L226             Difference]: Without dead ends: 193650
[2023-12-25 21:09:14,126 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7459 GetRequests, 7398 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1036 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=645, Invalid=3261, Unknown=0, NotChecked=0, Total=3906
[2023-12-25 21:09:14,126 INFO  L413           NwaCegarLoop]: 55620 mSDtfsCounter, 220993 mSDsluCounter, 488698 mSDsCounter, 0 mSdLazyCounter, 214397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 78.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220993 SdHoareTripleChecker+Valid, 544318 SdHoareTripleChecker+Invalid, 214400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.5s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 214397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 95.5s IncrementalHoareTripleChecker+Time
[2023-12-25 21:09:14,126 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [220993 Valid, 544318 Invalid, 214400 Unknown, 0 Unchecked, 1.5s Time], IncrementalHoareTripleChecker [3 Valid, 214397 Invalid, 0 Unknown, 0 Unchecked, 95.5s Time]
[2023-12-25 21:09:14,412 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 193650 states.
[2023-12-25 21:09:15,263 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 193650 to 26512.
[2023-12-25 21:09:15,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 26512 states, 26511 states have (on average 1.6653841801516351) internal successors, (44151), 26511 states have internal predecessors, (44151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:15,317 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26512 states to 26512 states and 44151 transitions.
[2023-12-25 21:09:15,317 INFO  L78                 Accepts]: Start accepts. Automaton has 26512 states and 44151 transitions. Word has length 7401
[2023-12-25 21:09:15,320 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:09:15,320 INFO  L495      AbstractCegarLoop]: Abstraction has 26512 states and 44151 transitions.
[2023-12-25 21:09:15,322 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 528.6428571428571) internal successors, (7401), 14 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:15,322 INFO  L276                IsEmpty]: Start isEmpty. Operand 26512 states and 44151 transitions.
[2023-12-25 21:09:15,711 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7402
[2023-12-25 21:09:15,711 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:09:15,727 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:09:15,901 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0
[2023-12-25 21:09:15,928 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:09:15,929 INFO  L420      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:09:15,929 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:09:15,931 INFO  L85        PathProgramCache]: Analyzing trace with hash 918710597, now seen corresponding path program 1 times
[2023-12-25 21:09:15,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:09:15,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360471800]
[2023-12-25 21:09:15,932 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:09:15,932 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:09:16,900 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:09:16,900 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974968247]
[2023-12-25 21:09:16,902 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:09:16,902 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:09:16,902 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:09:16,913 INFO  L229       MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:09:16,968 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process
[2023-12-25 21:09:27,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-25 21:09:27,936 INFO  L262         TraceCheckSpWp]: Trace formula consists of 37091 conjuncts, 70 conjunts are in the unsatisfiable core
[2023-12-25 21:09:28,051 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-25 21:09:36,701 INFO  L134       CoverageAnalysis]: Checked inductivity of 132 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-12-25 21:09:36,701 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-25 21:09:36,702 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-12-25 21:09:36,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360471800]
[2023-12-25 21:09:36,702 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2023-12-25 21:09:36,702 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974968247]
[2023-12-25 21:09:36,702 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [974968247] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-25 21:09:36,702 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-25 21:09:36,703 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27
[2023-12-25 21:09:36,703 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266412575]
[2023-12-25 21:09:36,703 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-25 21:09:36,708 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 27 states
[2023-12-25 21:09:36,708 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-12-25 21:09:36,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2023-12-25 21:09:36,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=650, Unknown=0, NotChecked=0, Total=702
[2023-12-25 21:09:36,715 INFO  L87              Difference]: Start difference. First operand 26512 states and 44151 transitions. Second operand  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:55,639 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-25 21:09:55,640 INFO  L93              Difference]: Finished difference Result 451213 states and 751387 transitions.
[2023-12-25 21:09:55,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 215 states. 
[2023-12-25 21:09:55,642 INFO  L78                 Accepts]: Start accepts. Automaton has  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 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 7401
[2023-12-25 21:09:55,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-25 21:09:56,294 INFO  L225             Difference]: With dead ends: 451213
[2023-12-25 21:09:56,294 INFO  L226             Difference]: Without dead ends: 425236
[2023-12-25 21:09:56,391 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 7638 GetRequests, 7401 SyntacticMatches, 0 SemanticMatches, 237 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24456 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=10157, Invalid=46725, Unknown=0, NotChecked=0, Total=56882
[2023-12-25 21:09:56,392 INFO  L413           NwaCegarLoop]: 34992 mSDtfsCounter, 1724045 mSDsluCounter, 747517 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724045 SdHoareTripleChecker+Valid, 782509 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.9s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2023-12-25 21:09:56,393 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [1724045 Valid, 782509 Invalid, 1594 Unknown, 0 Unchecked, 1.9s Time], IncrementalHoareTripleChecker [125 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2023-12-25 21:09:56,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 425236 states.
[2023-12-25 21:09:58,567 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 425236 to 47016.
[2023-12-25 21:09:58,603 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 47016 states, 47015 states have (on average 1.6651706902052537) internal successors, (78288), 47015 states have internal predecessors, (78288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:58,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 47016 states to 47016 states and 78288 transitions.
[2023-12-25 21:09:58,649 INFO  L78                 Accepts]: Start accepts. Automaton has 47016 states and 78288 transitions. Word has length 7401
[2023-12-25 21:09:58,652 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-25 21:09:58,652 INFO  L495      AbstractCegarLoop]: Abstraction has 47016 states and 78288 transitions.
[2023-12-25 21:09:58,654 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 27 states, 27 states have (on average 274.1111111111111) internal successors, (7401), 27 states have internal predecessors, (7401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2023-12-25 21:09:58,654 INFO  L276                IsEmpty]: Start isEmpty. Operand 47016 states and 78288 transitions.
[2023-12-25 21:09:59,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 7403
[2023-12-25 21:09:59,152 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-25 21:09:59,154 INFO  L195           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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[2023-12-25 21:09:59,282 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0
[2023-12-25 21:09:59,354 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:09:59,355 INFO  L420      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-25 21:09:59,355 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-25 21:09:59,356 INFO  L85        PathProgramCache]: Analyzing trace with hash -1228868471, now seen corresponding path program 1 times
[2023-12-25 21:09:59,356 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-12-25 21:09:59,356 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713863012]
[2023-12-25 21:09:59,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:09:59,357 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-12-25 21:09:59,952 ERROR L246   FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic
[2023-12-25 21:09:59,952 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [221195310]
[2023-12-25 21:09:59,954 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-25 21:09:59,954 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-12-25 21:09:59,954 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-25 21:09:59,955 INFO  L229       MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-12-25 21:09:59,959 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process