/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_fillercodestructure_filler-pe-ci_file-81.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 07:48:53,477 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 07:48:53,514 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 07:48:53,517 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 07:48:53,517 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 07:48:53,531 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 07:48:53,531 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 07:48:53,531 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 07:48:53,532 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 07:48:53,532 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 07:48:53,532 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 07:48:53,533 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 07:48:53,533 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 07:48:53,533 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 07:48:53,533 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 07:48:53,534 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 07:48:53,534 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 07:48:53,534 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 07:48:53,534 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 07:48:53,535 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 07:48:53,535 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 07:48:53,535 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 07:48:53,535 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 07:48:53,536 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 07:48:53,537 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 07:48:53,537 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 07:48:53,537 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 07:48:53,537 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 07:48:53,537 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 07:48:53,537 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:48:53,538 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 07:48:53,538 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 07:48:53,539 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 07:48:53,539 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 07:48:53,539 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 07:48:53,539 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 07:48:53,704 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 07:48:53,724 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 07:48:53,725 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 07:48:53,726 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 07:48:53,727 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 07:48:53,728 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i
[2023-12-23 07:48:54,699 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 07:48:54,882 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 07:48:54,883 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i
[2023-12-23 07:48:54,892 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0633228/09e844f645d6425ea25a105380a5ca48/FLAG8f99a06bb
[2023-12-23 07:48:54,904 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0633228/09e844f645d6425ea25a105380a5ca48
[2023-12-23 07:48:54,907 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 07:48:54,908 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 07:48:54,910 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 07:48:54,910 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 07:48:54,913 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 07:48:54,914 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:48:54" (1/1) ...
[2023-12-23 07:48:54,914 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc9bc2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:54, skipping insertion in model container
[2023-12-23 07:48:54,915 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:48:54" (1/1) ...
[2023-12-23 07:48:54,944 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 07:48:55,062 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_fillercodestructure_filler-pe-ci_file-81.i[919,932]
[2023-12-23 07:48:55,124 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:48:55,134 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 07:48:55,142 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_fillercodestructure_filler-pe-ci_file-81.i[919,932]
[2023-12-23 07:48:55,196 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:48:55,210 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 07:48:55,212 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55 WrapperNode
[2023-12-23 07:48:55,212 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 07:48:55,215 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 07:48:55,215 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 07:48:55,215 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 07:48:55,220 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,245 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,265 INFO  L138                Inliner]: procedures = 27, calls = 44, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 202
[2023-12-23 07:48:55,265 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 07:48:55,266 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 07:48:55,266 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 07:48:55,266 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 07:48:55,273 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,273 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,276 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,292 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 07:48:55,293 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,293 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,300 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,302 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,304 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,305 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,307 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 07:48:55,308 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 07:48:55,308 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 07:48:55,308 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 07:48:55,309 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (1/1) ...
[2023-12-23 07:48:55,324 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:48:55,331 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 07:48:55,344 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 07:48:55,366 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 07:48:55,381 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 07:48:55,381 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 07:48:55,382 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 07:48:55,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 07:48:55,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 07:48:55,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 07:48:55,445 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 07:48:55,446 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 07:48:56,182 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 07:48:56,266 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 07:48:56,266 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 07:48:56,266 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:48:56 BoogieIcfgContainer
[2023-12-23 07:48:56,266 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 07:48:56,273 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 07:48:56,273 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 07:48:56,275 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 07:48:56,276 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:48:54" (1/3) ...
[2023-12-23 07:48:56,276 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23798cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:48:56, skipping insertion in model container
[2023-12-23 07:48:56,276 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:48:55" (2/3) ...
[2023-12-23 07:48:56,276 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23798cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:48:56, skipping insertion in model container
[2023-12-23 07:48:56,277 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:48:56" (3/3) ...
[2023-12-23 07:48:56,277 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-81.i
[2023-12-23 07:48:56,290 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 07:48:56,290 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 07:48:56,329 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 07:48:56,333 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;@7cd2b089, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 07:48:56,333 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 07:48:56,336 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 84 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2023-12-23 07:48:56,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2023-12-23 07:48:56,354 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:48:56,355 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:56,355 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:48:56,359 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:48:56,359 INFO  L85        PathProgramCache]: Analyzing trace with hash 1629955325, now seen corresponding path program 1 times
[2023-12-23 07:48:56,373 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:48:56,373 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [701706940]
[2023-12-23 07:48:56,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:48:56,374 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 07:48:56,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:48:56,376 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 07:48:56,385 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 07:48:56,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:48:56,671 INFO  L262         TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 07:48:56,679 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:48:56,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 924 proven. 0 refuted. 0 times theorem prover too weak. 936 trivial. 0 not checked.
[2023-12-23 07:48:56,722 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:48:56,723 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:48:56,723 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [701706940]
[2023-12-23 07:48:56,723 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [701706940] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:48:56,724 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:48:56,724 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 07:48:56,725 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107143851]
[2023-12-23 07:48:56,725 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:48:56,728 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 07:48:56,728 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:48:56,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 07:48:56,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 07:48:56,748 INFO  L87              Difference]: Start difference. First operand  has 84 states, 50 states have (on average 1.48) internal successors, (74), 51 states have internal predecessors, (74), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 07:48:56,840 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:48:56,840 INFO  L93              Difference]: Finished difference Result 165 states and 301 transitions.
[2023-12-23 07:48:56,844 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 07:48:56,845 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193
[2023-12-23 07:48:56,845 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:48:56,850 INFO  L225             Difference]: With dead ends: 165
[2023-12-23 07:48:56,850 INFO  L226             Difference]: Without dead ends: 82
[2023-12-23 07:48:56,853 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 192 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 07:48:56,855 INFO  L413           NwaCegarLoop]: 128 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-23 07:48:56,855 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 07:48:56,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2023-12-23 07:48:56,886 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2023-12-23 07:48:56,887 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 49 states have internal predecessors, (69), 31 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31)
[2023-12-23 07:48:56,889 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 131 transitions.
[2023-12-23 07:48:56,890 INFO  L78                 Accepts]: Start accepts. Automaton has 82 states and 131 transitions. Word has length 193
[2023-12-23 07:48:56,891 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:48:56,891 INFO  L495      AbstractCegarLoop]: Abstraction has 82 states and 131 transitions.
[2023-12-23 07:48:56,891 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.5) internal successors, (45), 2 states have internal predecessors, (45), 2 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 07:48:56,891 INFO  L276                IsEmpty]: Start isEmpty. Operand 82 states and 131 transitions.
[2023-12-23 07:48:56,896 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2023-12-23 07:48:56,897 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:48:56,897 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:56,921 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 07:48:57,116 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 07:48:57,117 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:48:57,117 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:48:57,117 INFO  L85        PathProgramCache]: Analyzing trace with hash 99271923, now seen corresponding path program 1 times
[2023-12-23 07:48:57,118 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:48:57,118 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086491312]
[2023-12-23 07:48:57,118 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:48:57,118 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 07:48:57,118 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:48:57,121 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 07:48:57,122 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 07:48:57,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:48:57,357 INFO  L262         TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 07:48:57,363 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:48:57,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked.
[2023-12-23 07:48:57,631 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:48:57,696 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:48:57,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086491312]
[2023-12-23 07:48:57,696 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086491312] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:48:57,697 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1386270779]
[2023-12-23 07:48:57,697 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:48:57,697 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 07:48:57,697 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 07:48:57,735 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 07:48:57,752 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2023-12-23 07:48:58,008 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:48:58,017 INFO  L262         TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 07:48:58,021 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:48:58,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked.
[2023-12-23 07:48:58,083 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:48:58,083 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1386270779] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:48:58,083 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 07:48:58,084 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8
[2023-12-23 07:48:58,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200766316]
[2023-12-23 07:48:58,084 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:48:58,086 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 07:48:58,086 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:48:58,087 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 07:48:58,087 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2023-12-23 07:48:58,087 INFO  L87              Difference]: Start difference. First operand 82 states and 131 transitions. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 07:48:58,281 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:48:58,281 INFO  L93              Difference]: Finished difference Result 226 states and 356 transitions.
[2023-12-23 07:48:58,283 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 07:48:58,283 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193
[2023-12-23 07:48:58,284 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:48:58,285 INFO  L225             Difference]: With dead ends: 226
[2023-12-23 07:48:58,285 INFO  L226             Difference]: Without dead ends: 145
[2023-12-23 07:48:58,286 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90
[2023-12-23 07:48:58,287 INFO  L413           NwaCegarLoop]: 169 mSDtfsCounter, 81 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 07:48:58,287 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 395 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 07:48:58,288 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 145 states.
[2023-12-23 07:48:58,299 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 139.
[2023-12-23 07:48:58,300 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 139 states, 94 states have (on average 1.425531914893617) internal successors, (134), 96 states have internal predecessors, (134), 41 states have call successors, (41), 3 states have call predecessors, (41), 3 states have return successors, (41), 39 states have call predecessors, (41), 41 states have call successors, (41)
[2023-12-23 07:48:58,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 216 transitions.
[2023-12-23 07:48:58,301 INFO  L78                 Accepts]: Start accepts. Automaton has 139 states and 216 transitions. Word has length 193
[2023-12-23 07:48:58,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:48:58,302 INFO  L495      AbstractCegarLoop]: Abstraction has 139 states and 216 transitions.
[2023-12-23 07:48:58,302 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 07:48:58,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 139 states and 216 transitions.
[2023-12-23 07:48:58,303 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2023-12-23 07:48:58,303 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:48:58,303 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:58,323 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2023-12-23 07:48:58,515 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 07:48:58,715 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 07:48:58,716 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:48:58,716 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:48:58,717 INFO  L85        PathProgramCache]: Analyzing trace with hash -487534091, now seen corresponding path program 1 times
[2023-12-23 07:48:58,717 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:48:58,717 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078197136]
[2023-12-23 07:48:58,717 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:48:58,717 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 07:48:58,718 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:48:58,733 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 07:48:58,743 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 07:48:58,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:48:58,977 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 07:48:58,981 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:48:59,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 540 proven. 75 refuted. 0 times theorem prover too weak. 1245 trivial. 0 not checked.
[2023-12-23 07:48:59,240 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:48:59,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1860 trivial. 0 not checked.
[2023-12-23 07:48:59,355 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:48:59,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078197136]
[2023-12-23 07:48:59,356 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078197136] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:48:59,356 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 07:48:59,356 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-12-23 07:48:59,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480863153]
[2023-12-23 07:48:59,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:48:59,356 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 07:48:59,356 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:48:59,357 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 07:48:59,357 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 07:48:59,357 INFO  L87              Difference]: Start difference. First operand 139 states and 216 transitions. Second operand  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 07:48:59,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:48:59,536 INFO  L93              Difference]: Finished difference Result 326 states and 503 transitions.
[2023-12-23 07:48:59,538 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 07:48:59,538 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31) Word has length 193
[2023-12-23 07:48:59,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:48:59,541 INFO  L225             Difference]: With dead ends: 326
[2023-12-23 07:48:59,541 INFO  L226             Difference]: Without dead ends: 188
[2023-12-23 07:48:59,542 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 384 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 07:48:59,542 INFO  L413           NwaCegarLoop]: 127 mSDtfsCounter, 120 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 07:48:59,542 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 235 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 07:48:59,543 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 188 states.
[2023-12-23 07:48:59,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 171.
[2023-12-23 07:48:59,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 171 states, 121 states have (on average 1.4297520661157024) internal successors, (173), 124 states have internal predecessors, (173), 45 states have call successors, (45), 4 states have call predecessors, (45), 4 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45)
[2023-12-23 07:48:59,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 263 transitions.
[2023-12-23 07:48:59,574 INFO  L78                 Accepts]: Start accepts. Automaton has 171 states and 263 transitions. Word has length 193
[2023-12-23 07:48:59,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:48:59,574 INFO  L495      AbstractCegarLoop]: Abstraction has 171 states and 263 transitions.
[2023-12-23 07:48:59,575 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (31), 1 states have call predecessors, (31), 1 states have return successors, (31), 1 states have call predecessors, (31), 1 states have call successors, (31)
[2023-12-23 07:48:59,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 171 states and 263 transitions.
[2023-12-23 07:48:59,576 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2023-12-23 07:48:59,576 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:48:59,576 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:59,584 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 07:48:59,788 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 07:48:59,788 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:48:59,789 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:48:59,789 INFO  L85        PathProgramCache]: Analyzing trace with hash -911845327, now seen corresponding path program 1 times
[2023-12-23 07:48:59,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:48:59,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451231314]
[2023-12-23 07:48:59,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:48:59,790 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 07:48:59,790 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:48:59,791 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 07:48:59,793 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 07:49:00,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:49:00,013 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 07:49:00,017 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:49:00,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked.
[2023-12-23 07:49:00,189 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:49:00,244 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:49:00,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451231314]
[2023-12-23 07:49:00,245 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [451231314] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:49:00,245 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2056240763]
[2023-12-23 07:49:00,245 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:49:00,245 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 07:49:00,245 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 07:49:00,248 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 07:49:00,303 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2023-12-23 07:49:00,779 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:49:00,790 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 07:49:00,794 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:49:00,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 1860 backedges. 750 proven. 66 refuted. 0 times theorem prover too weak. 1044 trivial. 0 not checked.
[2023-12-23 07:49:00,941 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:49:00,977 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2056240763] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:49:00,977 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 07:49:00,977 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2023-12-23 07:49:00,978 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943043642]
[2023-12-23 07:49:00,978 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 07:49:00,978 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 07:49:00,978 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:49:00,979 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 07:49:00,979 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-12-23 07:49:00,979 INFO  L87              Difference]: Start difference. First operand 171 states and 263 transitions. Second operand  has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 07:49:01,495 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:49:01,496 INFO  L93              Difference]: Finished difference Result 431 states and 653 transitions.
[2023-12-23 07:49:01,496 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-23 07:49:01,496 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31) Word has length 193
[2023-12-23 07:49:01,497 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:49:01,498 INFO  L225             Difference]: With dead ends: 431
[2023-12-23 07:49:01,498 INFO  L226             Difference]: Without dead ends: 261
[2023-12-23 07:49:01,499 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306
[2023-12-23 07:49:01,500 INFO  L413           NwaCegarLoop]: 150 mSDtfsCounter, 124 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 395 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 395 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 07:49:01,500 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 384 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 395 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 07:49:01,501 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 261 states.
[2023-12-23 07:49:01,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 175.
[2023-12-23 07:49:01,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 175 states, 124 states have (on average 1.3870967741935485) internal successors, (172), 127 states have internal predecessors, (172), 45 states have call successors, (45), 5 states have call predecessors, (45), 5 states have return successors, (45), 42 states have call predecessors, (45), 45 states have call successors, (45)
[2023-12-23 07:49:01,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 262 transitions.
[2023-12-23 07:49:01,533 INFO  L78                 Accepts]: Start accepts. Automaton has 175 states and 262 transitions. Word has length 193
[2023-12-23 07:49:01,533 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:49:01,533 INFO  L495      AbstractCegarLoop]: Abstraction has 175 states and 262 transitions.
[2023-12-23 07:49:01,535 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 2 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (31), 2 states have call predecessors, (31), 2 states have call successors, (31)
[2023-12-23 07:49:01,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 175 states and 262 transitions.
[2023-12-23 07:49:01,537 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 195
[2023-12-23 07:49:01,537 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:49:01,537 INFO  L195           NwaCegarLoop]: trace histogram [31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:01,545 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0
[2023-12-23 07:49:01,745 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 07:49:01,937 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 07:49:01,938 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:49:01,938 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:49:01,938 INFO  L85        PathProgramCache]: Analyzing trace with hash 607790285, now seen corresponding path program 1 times
[2023-12-23 07:49:01,939 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:49:01,939 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851490035]
[2023-12-23 07:49:01,939 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:49:01,939 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 07:49:01,939 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:49:01,945 INFO  L229       MonitoredProcess]: Starting monitored process 8 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 07:49:01,947 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 (8)] Waiting until timeout for monitored process
[2023-12-23 07:49:02,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:49:02,377 INFO  L262         TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-23 07:49:02,383 INFO  L285         TraceCheckSpWp]: Computing forward predicates...