/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-63.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 00:26:48,726 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 00:26:48,858 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-23 00:26:48,863 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 00:26:48,863 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 00:26:48,906 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 00:26:48,907 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 00:26:48,907 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 00:26:48,908 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 00:26:48,912 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 00:26:48,912 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 00:26:48,913 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 00:26:48,913 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 00:26:48,917 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 00:26:48,917 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 00:26:48,918 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 00:26:48,918 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 00:26:48,918 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 00:26:48,918 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 00:26:48,919 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 00:26:48,919 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 00:26:48,924 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 00:26:48,925 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 00:26:48,925 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 00:26:48,925 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 00:26:48,925 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 00:26:48,926 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 00:26:48,926 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 00:26:48,926 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 00:26:48,926 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 00:26:48,928 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 00:26:48,928 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 00:26:48,928 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 00:26:48,928 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 00:26:48,928 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 00:26:48,929 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 00:26:48,929 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 00:26:48,929 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 00:26:48,929 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 00:26:48,929 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 00:26:48,930 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 00:26:48,930 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 00:26:48,930 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 00:26:48,930 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 00:26:48,944 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 00:26:48,944 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 00:26:48,945 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 00:26:49,386 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 00:26:49,415 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 00:26:49,417 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 00:26:49,418 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 00:26:49,419 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 00:26:49,437 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-63.i
[2023-12-23 00:26:51,442 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 00:26:51,893 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 00:26:51,894 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-63.i
[2023-12-23 00:26:51,919 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe87b067/51858614384e49e18d43a1ccd2aaaf41/FLAG5c6be1d83
[2023-12-23 00:26:51,936 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe87b067/51858614384e49e18d43a1ccd2aaaf41
[2023-12-23 00:26:51,939 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 00:26:51,940 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 00:26:51,960 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 00:26:51,960 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 00:26:51,965 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 00:26:51,965 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:26:51" (1/1) ...
[2023-12-23 00:26:51,966 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@111552cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:51, skipping insertion in model container
[2023-12-23 00:26:51,967 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:26:51" (1/1) ...
[2023-12-23 00:26:52,047 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 00:26:52,318 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-63.i[916,929]
[2023-12-23 00:26:52,489 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 00:26:52,534 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 00:26:52,548 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-63.i[916,929]
[2023-12-23 00:26:52,665 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 00:26:52,704 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 00:26:52,705 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52 WrapperNode
[2023-12-23 00:26:52,705 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 00:26:52,722 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 00:26:52,722 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 00:26:52,723 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 00:26:52,729 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,764 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,820 INFO  L138                Inliner]: procedures = 27, calls = 69, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 319
[2023-12-23 00:26:52,820 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 00:26:52,821 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 00:26:52,821 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 00:26:52,821 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 00:26:52,845 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,845 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,861 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,889 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].
[2023-12-23 00:26:52,889 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,890 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,916 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,919 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,943 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,959 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:52,985 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 00:26:52,987 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 00:26:52,987 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 00:26:52,987 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 00:26:52,988 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (1/1) ...
[2023-12-23 00:26:53,001 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 00:26:53,027 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 00:26:53,055 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)
[2023-12-23 00:26:53,101 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
[2023-12-23 00:26:53,125 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 00:26:53,126 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 00:26:53,126 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 00:26:53,128 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 00:26:53,128 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 00:26:53,129 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 00:26:53,289 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 00:26:53,292 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 00:27:05,777 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 00:27:05,915 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 00:27:05,915 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 00:27:05,916 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:27:05 BoogieIcfgContainer
[2023-12-23 00:27:05,916 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 00:27:05,918 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 00:27:05,918 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 00:27:05,921 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 00:27:05,922 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:26:51" (1/3) ...
[2023-12-23 00:27:05,931 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b3450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:27:05, skipping insertion in model container
[2023-12-23 00:27:05,931 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:26:52" (2/3) ...
[2023-12-23 00:27:05,931 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@90b3450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:27:05, skipping insertion in model container
[2023-12-23 00:27:05,932 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:27:05" (3/3) ...
[2023-12-23 00:27:05,933 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-63.i
[2023-12-23 00:27:05,963 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 00:27:05,966 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 00:27:06,080 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 00:27:06,087 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;@72431e6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 00:27:06,088 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 00:27:06,099 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 135 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 77 states have internal predecessors, (109), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56)
[2023-12-23 00:27:06,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 342
[2023-12-23 00:27:06,143 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:06,143 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:06,144 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:06,148 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:06,149 INFO  L85        PathProgramCache]: Analyzing trace with hash -397701011, now seen corresponding path program 1 times
[2023-12-23 00:27:06,200 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:06,201 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708102625]
[2023-12-23 00:27:06,201 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:06,202 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:06,202 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:06,224 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:06,271 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-23 00:27:07,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:07,438 INFO  L262         TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 00:27:07,480 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:27:07,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 2046 proven. 0 refuted. 0 times theorem prover too weak. 4114 trivial. 0 not checked.
[2023-12-23 00:27:07,596 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:27:07,597 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:27:07,597 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708102625]
[2023-12-23 00:27:07,598 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [708102625] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:27:07,598 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:27:07,598 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 00:27:07,600 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385756457]
[2023-12-23 00:27:07,602 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:27:07,608 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 00:27:07,609 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:27:07,639 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 00:27:07,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 00:27:07,644 INFO  L87              Difference]: Start difference. First operand  has 135 states, 76 states have (on average 1.4342105263157894) internal successors, (109), 77 states have internal predecessors, (109), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56) Second operand  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56)
[2023-12-23 00:27:11,972 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.20s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:11,973 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:27:11,974 INFO  L93              Difference]: Finished difference Result 267 states and 496 transitions.
[2023-12-23 00:27:12,033 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 00:27:12,035 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56) Word has length 341
[2023-12-23 00:27:12,036 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:27:12,048 INFO  L225             Difference]: With dead ends: 267
[2023-12-23 00:27:12,048 INFO  L226             Difference]: Without dead ends: 133
[2023-12-23 00:27:12,054 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 00:27:12,060 INFO  L413           NwaCegarLoop]: 213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time
[2023-12-23 00:27:12,062 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 213 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time]
[2023-12-23 00:27:12,085 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 133 states.
[2023-12-23 00:27:12,171 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133.
[2023-12-23 00:27:12,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 133 states, 75 states have (on average 1.3866666666666667) internal successors, (104), 75 states have internal predecessors, (104), 56 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56)
[2023-12-23 00:27:12,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 216 transitions.
[2023-12-23 00:27:12,176 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 216 transitions. Word has length 341
[2023-12-23 00:27:12,176 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:27:12,176 INFO  L495      AbstractCegarLoop]: Abstraction has 133 states and 216 transitions.
[2023-12-23 00:27:12,176 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 2 states have call predecessors, (56), 2 states have call successors, (56)
[2023-12-23 00:27:12,177 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 216 transitions.
[2023-12-23 00:27:12,199 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 342
[2023-12-23 00:27:12,199 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:12,199 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:12,247 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-23 00:27:12,428 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:12,429 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:12,430 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:12,430 INFO  L85        PathProgramCache]: Analyzing trace with hash -1981038311, now seen corresponding path program 1 times
[2023-12-23 00:27:12,431 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:12,432 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121771356]
[2023-12-23 00:27:12,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:12,432 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:12,432 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:12,435 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:12,452 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-23 00:27:13,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:13,440 INFO  L262         TraceCheckSpWp]: Trace formula consists of 547 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 00:27:13,451 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:27:13,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked.
[2023-12-23 00:27:13,703 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:27:13,703 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:27:13,705 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121771356]
[2023-12-23 00:27:13,705 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [121771356] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:27:13,705 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:27:13,705 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 00:27:13,706 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896800814]
[2023-12-23 00:27:13,706 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:27:13,708 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 00:27:13,708 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:27:13,713 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 00:27:13,713 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:13,714 INFO  L87              Difference]: Start difference. First operand 133 states and 216 transitions. Second operand  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:17,990 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:18,088 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:27:18,089 INFO  L93              Difference]: Finished difference Result 312 states and 503 transitions.
[2023-12-23 00:27:18,090 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 00:27:18,090 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 341
[2023-12-23 00:27:18,110 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:27:18,115 INFO  L225             Difference]: With dead ends: 312
[2023-12-23 00:27:18,115 INFO  L226             Difference]: Without dead ends: 180
[2023-12-23 00:27:18,118 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 339 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:18,119 INFO  L413           NwaCegarLoop]: 281 mSDtfsCounter, 118 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time
[2023-12-23 00:27:18,120 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 439 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time]
[2023-12-23 00:27:18,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 180 states.
[2023-12-23 00:27:18,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 179.
[2023-12-23 00:27:18,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 179 states, 94 states have (on average 1.297872340425532) internal successors, (122), 95 states have internal predecessors, (122), 82 states have call successors, (82), 2 states have call predecessors, (82), 2 states have return successors, (82), 81 states have call predecessors, (82), 82 states have call successors, (82)
[2023-12-23 00:27:18,205 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 286 transitions.
[2023-12-23 00:27:18,205 INFO  L78                 Accepts]: Start accepts. Automaton has 179 states and 286 transitions. Word has length 341
[2023-12-23 00:27:18,206 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:27:18,206 INFO  L495      AbstractCegarLoop]: Abstraction has 179 states and 286 transitions.
[2023-12-23 00:27:18,206 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:18,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 179 states and 286 transitions.
[2023-12-23 00:27:18,216 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 343
[2023-12-23 00:27:18,217 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:18,217 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:18,273 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 00:27:18,436 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:18,437 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:18,438 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:18,438 INFO  L85        PathProgramCache]: Analyzing trace with hash -421911358, now seen corresponding path program 1 times
[2023-12-23 00:27:18,439 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:18,439 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081022953]
[2023-12-23 00:27:18,439 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:18,439 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:18,439 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:18,457 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:18,536 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-12-23 00:27:19,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:19,368 INFO  L262         TraceCheckSpWp]: Trace formula consists of 548 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 00:27:19,392 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:27:20,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked.
[2023-12-23 00:27:20,968 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:27:20,968 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:27:20,968 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081022953]
[2023-12-23 00:27:20,970 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081022953] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:27:20,970 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:27:20,970 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 00:27:20,971 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812049457]
[2023-12-23 00:27:20,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:27:20,971 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 00:27:20,972 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:27:20,972 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 00:27:20,973 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:20,973 INFO  L87              Difference]: Start difference. First operand 179 states and 286 transitions. Second operand  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:25,139 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.12s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:28,143 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.00s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:28,327 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:27:28,332 INFO  L93              Difference]: Finished difference Result 450 states and 718 transitions.
[2023-12-23 00:27:28,352 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 00:27:28,353 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 342
[2023-12-23 00:27:28,355 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:27:28,360 INFO  L225             Difference]: With dead ends: 450
[2023-12-23 00:27:28,361 INFO  L226             Difference]: Without dead ends: 314
[2023-12-23 00:27:28,362 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:28,364 INFO  L413           NwaCegarLoop]: 211 mSDtfsCounter, 53 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time
[2023-12-23 00:27:28,368 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 417 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 1 Unknown, 0 Unchecked, 7.3s Time]
[2023-12-23 00:27:28,370 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 314 states.
[2023-12-23 00:27:28,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 311.
[2023-12-23 00:27:28,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 311 states, 168 states have (on average 1.3154761904761905) internal successors, (221), 169 states have internal predecessors, (221), 138 states have call successors, (138), 4 states have call predecessors, (138), 4 states have return successors, (138), 137 states have call predecessors, (138), 138 states have call successors, (138)
[2023-12-23 00:27:28,510 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 497 transitions.
[2023-12-23 00:27:28,510 INFO  L78                 Accepts]: Start accepts. Automaton has 311 states and 497 transitions. Word has length 342
[2023-12-23 00:27:28,512 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:27:28,512 INFO  L495      AbstractCegarLoop]: Abstraction has 311 states and 497 transitions.
[2023-12-23 00:27:28,512 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 2 states have internal predecessors, (65), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:28,513 INFO  L276                IsEmpty]: Start isEmpty. Operand 311 states and 497 transitions.
[2023-12-23 00:27:28,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 344
[2023-12-23 00:27:28,531 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:28,531 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:28,581 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-23 00:27:28,748 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:28,749 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:28,750 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:28,750 INFO  L85        PathProgramCache]: Analyzing trace with hash -924127649, now seen corresponding path program 1 times
[2023-12-23 00:27:28,751 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:28,751 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328487124]
[2023-12-23 00:27:28,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:28,751 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:28,752 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:28,769 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:28,814 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 00:27:29,720 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:29,762 INFO  L262         TraceCheckSpWp]: Trace formula consists of 549 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 00:27:29,778 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:27:30,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 2323 proven. 39 refuted. 0 times theorem prover too weak. 3798 trivial. 0 not checked.
[2023-12-23 00:27:30,155 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 00:27:30,544 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 126 proven. 39 refuted. 0 times theorem prover too weak. 5995 trivial. 0 not checked.
[2023-12-23 00:27:30,544 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:27:30,546 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1328487124]
[2023-12-23 00:27:30,548 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1328487124] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 00:27:30,548 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 00:27:30,548 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2023-12-23 00:27:30,549 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384908812]
[2023-12-23 00:27:30,549 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 00:27:30,549 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-23 00:27:30,550 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:27:30,550 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-23 00:27:30,550 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-23 00:27:30,551 INFO  L87              Difference]: Start difference. First operand 311 states and 497 transitions. Second operand  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70)
[2023-12-23 00:27:37,635 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:41,644 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:43,548 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:44,953 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:27:44,953 INFO  L93              Difference]: Finished difference Result 624 states and 984 transitions.
[2023-12-23 00:27:44,956 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-23 00:27:44,957 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70) Word has length 343
[2023-12-23 00:27:44,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:27:44,960 INFO  L225             Difference]: With dead ends: 624
[2023-12-23 00:27:44,960 INFO  L226             Difference]: Without dead ends: 356
[2023-12-23 00:27:44,961 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 678 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2023-12-23 00:27:44,962 INFO  L413           NwaCegarLoop]: 221 mSDtfsCounter, 124 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 17 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.2s IncrementalHoareTripleChecker+Time
[2023-12-23 00:27:44,962 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 579 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 676 Invalid, 2 Unknown, 0 Unchecked, 14.2s Time]
[2023-12-23 00:27:44,963 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 356 states.
[2023-12-23 00:27:45,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 345.
[2023-12-23 00:27:45,040 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 345 states, 184 states have (on average 1.2771739130434783) internal successors, (235), 185 states have internal predecessors, (235), 154 states have call successors, (154), 6 states have call predecessors, (154), 6 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154)
[2023-12-23 00:27:45,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 543 transitions.
[2023-12-23 00:27:45,053 INFO  L78                 Accepts]: Start accepts. Automaton has 345 states and 543 transitions. Word has length 343
[2023-12-23 00:27:45,054 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:27:45,054 INFO  L495      AbstractCegarLoop]: Abstraction has 345 states and 543 transitions.
[2023-12-23 00:27:45,054 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 2 states have call successors, (69), 2 states have call predecessors, (69), 4 states have return successors, (70), 2 states have call predecessors, (70), 2 states have call successors, (70)
[2023-12-23 00:27:45,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 345 states and 543 transitions.
[2023-12-23 00:27:45,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 345
[2023-12-23 00:27:45,057 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:45,058 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:45,096 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 00:27:45,277 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:45,278 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:45,279 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:45,279 INFO  L85        PathProgramCache]: Analyzing trace with hash -74893268, now seen corresponding path program 1 times
[2023-12-23 00:27:45,280 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:45,280 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132766025]
[2023-12-23 00:27:45,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:45,280 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:45,280 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:45,281 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:45,337 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-12-23 00:27:46,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:46,189 INFO  L262         TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 00:27:46,195 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:27:46,284 INFO  L134       CoverageAnalysis]: Checked inductivity of 6160 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6160 trivial. 0 not checked.
[2023-12-23 00:27:46,285 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:27:46,285 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:27:46,285 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132766025]
[2023-12-23 00:27:46,286 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [132766025] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:27:46,286 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:27:46,286 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 00:27:46,286 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460772613]
[2023-12-23 00:27:46,286 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:27:46,287 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 00:27:46,287 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:27:46,288 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 00:27:46,288 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:46,289 INFO  L87              Difference]: Start difference. First operand 345 states and 543 transitions. Second operand  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:51,187 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:52,608 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:27:52,777 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:27:52,778 INFO  L93              Difference]: Finished difference Result 647 states and 1014 transitions.
[2023-12-23 00:27:52,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 00:27:52,779 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56) Word has length 344
[2023-12-23 00:27:52,786 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:27:52,789 INFO  L225             Difference]: With dead ends: 647
[2023-12-23 00:27:52,789 INFO  L226             Difference]: Without dead ends: 371
[2023-12-23 00:27:52,790 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:27:52,791 INFO  L413           NwaCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time
[2023-12-23 00:27:52,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 411 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 17 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time]
[2023-12-23 00:27:52,796 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 371 states.
[2023-12-23 00:27:52,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 361.
[2023-12-23 00:27:52,859 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 361 states, 200 states have (on average 1.285) internal successors, (257), 201 states have internal predecessors, (257), 154 states have call successors, (154), 6 states have call predecessors, (154), 6 states have return successors, (154), 153 states have call predecessors, (154), 154 states have call successors, (154)
[2023-12-23 00:27:52,861 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 565 transitions.
[2023-12-23 00:27:52,861 INFO  L78                 Accepts]: Start accepts. Automaton has 361 states and 565 transitions. Word has length 344
[2023-12-23 00:27:52,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:27:52,872 INFO  L495      AbstractCegarLoop]: Abstraction has 361 states and 565 transitions.
[2023-12-23 00:27:52,872 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 1 states have call successors, (56), 1 states have call predecessors, (56), 1 states have return successors, (56), 1 states have call predecessors, (56), 1 states have call successors, (56)
[2023-12-23 00:27:52,872 INFO  L276                IsEmpty]: Start isEmpty. Operand 361 states and 565 transitions.
[2023-12-23 00:27:52,877 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 345
[2023-12-23 00:27:52,877 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:27:52,877 INFO  L195           NwaCegarLoop]: trace histogram [56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 00:27:52,913 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-12-23 00:27:53,099 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:53,100 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:27:53,101 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:27:53,101 INFO  L85        PathProgramCache]: Analyzing trace with hash 233144300, now seen corresponding path program 1 times
[2023-12-23 00:27:53,102 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:27:53,102 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [437562139]
[2023-12-23 00:27:53,102 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:27:53,102 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 00:27:53,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:27:53,105 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 00:27:53,144 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-12-23 00:27:54,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:27:54,127 INFO  L262         TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 22 conjunts are in the unsatisfiable core
[2023-12-23 00:27:54,162 INFO  L285         TraceCheckSpWp]: Computing forward predicates...