/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-cn_file-22.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 08:14:52,640 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 08:14:52,680 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 08:14:52,684 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 08:14:52,684 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 08:14:52,701 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 08:14:52,702 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 08:14:52,702 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 08:14:52,702 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 08:14:52,702 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 08:14:52,703 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 08:14:52,703 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 08:14:52,703 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 08:14:52,704 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 08:14:52,704 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 08:14:52,704 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 08:14:52,704 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 08:14:52,705 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 08:14:52,705 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 08:14:52,705 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 08:14:52,706 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 08:14:52,707 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 08:14:52,707 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 08:14:52,707 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 08:14:52,708 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 08:14:52,708 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 08:14:52,708 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 08:14:52,708 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 08:14:52,709 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 08:14:52,709 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 08:14:52,709 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 08:14:52,710 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 08:14:52,710 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 08:14:52,711 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 08:14:52,711 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 08:14:52,711 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 08:14:52,711 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 08:14:52,712 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 08:14:52,712 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 08:14:52,712 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 08:14:52,874 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 08:14:52,887 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 08:14:52,888 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 08:14:52,889 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 08:14:52,889 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 08:14:52,890 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-22.i
[2023-12-23 08:14:53,981 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 08:14:54,161 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 08:14:54,162 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-cn_file-22.i
[2023-12-23 08:14:54,168 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1259c005f/a579e52ca43544f1b24acf7c827949f7/FLAG2977bfdc3
[2023-12-23 08:14:54,177 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1259c005f/a579e52ca43544f1b24acf7c827949f7
[2023-12-23 08:14:54,179 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 08:14:54,180 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 08:14:54,181 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 08:14:54,181 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 08:14:54,185 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 08:14:54,186 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,187 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ffe918f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54, skipping insertion in model container
[2023-12-23 08:14:54,187 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,221 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 08:14:54,330 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-cn_file-22.i[919,932]
[2023-12-23 08:14:54,399 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 08:14:54,409 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 08:14:54,425 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-cn_file-22.i[919,932]
[2023-12-23 08:14:54,454 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 08:14:54,467 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 08:14:54,468 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54 WrapperNode
[2023-12-23 08:14:54,468 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 08:14:54,469 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 08:14:54,469 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 08:14:54,469 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 08:14:54,474 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,485 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,514 INFO  L138                Inliner]: procedures = 27, calls = 63, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 255
[2023-12-23 08:14:54,514 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 08:14:54,515 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 08:14:54,515 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 08:14:54,515 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 08:14:54,541 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,541 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,546 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,567 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 08:14:54,568 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,568 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,582 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,586 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,588 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,589 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,593 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 08:14:54,594 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 08:14:54,594 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 08:14:54,594 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 08:14:54,595 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (1/1) ...
[2023-12-23 08:14:54,603 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 08:14:54,614 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 08:14:54,625 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 08:14:54,630 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 08:14:54,649 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 08:14:54,649 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 08:14:54,649 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 08:14:54,650 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 08:14:54,650 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 08:14:54,651 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 08:14:54,717 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 08:14:54,723 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 08:15:08,139 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 08:15:08,192 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 08:15:08,192 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 08:15:08,193 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:08 BoogieIcfgContainer
[2023-12-23 08:15:08,193 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 08:15:08,195 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 08:15:08,195 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 08:15:08,198 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 08:15:08,198 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 08:14:54" (1/3) ...
[2023-12-23 08:15:08,198 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9a2a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:08, skipping insertion in model container
[2023-12-23 08:15:08,198 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 08:14:54" (2/3) ...
[2023-12-23 08:15:08,199 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9a2a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 08:15:08, skipping insertion in model container
[2023-12-23 08:15:08,199 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 08:15:08" (3/3) ...
[2023-12-23 08:15:08,200 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-cn_file-22.i
[2023-12-23 08:15:08,212 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 08:15:08,213 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 08:15:08,255 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 08:15:08,260 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;@475f568, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 08:15:08,261 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 08:15:08,266 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 112 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 60 states have internal predecessors, (81), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2023-12-23 08:15:08,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2023-12-23 08:15:08,298 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 08:15:08,298 INFO  L195           NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:08,299 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 08:15:08,302 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 08:15:08,303 INFO  L85        PathProgramCache]: Analyzing trace with hash 884293356, now seen corresponding path program 1 times
[2023-12-23 08:15:08,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 08:15:08,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625067039]
[2023-12-23 08:15:08,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:15:08,313 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 08:15:08,313 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 08:15:08,316 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 08:15:08,318 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 08:15:09,307 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:15:09,345 INFO  L262         TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 08:15:09,355 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:15:09,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked.
[2023-12-23 08:15:09,428 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 08:15:09,428 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 08:15:09,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625067039]
[2023-12-23 08:15:09,429 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [625067039] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 08:15:09,429 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 08:15:09,429 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 08:15:09,431 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580693164]
[2023-12-23 08:15:09,431 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 08:15:09,435 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 08:15:09,435 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 08:15:09,461 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 08:15:09,461 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 08:15:09,464 INFO  L87              Difference]: Start difference. First operand  has 112 states, 59 states have (on average 1.3728813559322033) internal successors, (81), 60 states have internal predecessors, (81), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50) Second operand  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50)
[2023-12-23 08:15:14,166 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.65s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:15:14,167 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 08:15:14,167 INFO  L93              Difference]: Finished difference Result 221 states and 410 transitions.
[2023-12-23 08:15:14,424 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 08:15:14,425 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 299
[2023-12-23 08:15:14,427 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 08:15:14,449 INFO  L225             Difference]: With dead ends: 221
[2023-12-23 08:15:14,449 INFO  L226             Difference]: Without dead ends: 110
[2023-12-23 08:15:14,457 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 298 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 08:15:14,460 INFO  L413           NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time
[2023-12-23 08:15:14,461 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time]
[2023-12-23 08:15:14,473 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-12-23 08:15:14,509 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2023-12-23 08:15:14,510 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 58 states have (on average 1.2758620689655173) internal successors, (74), 58 states have internal predecessors, (74), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2023-12-23 08:15:14,513 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 174 transitions.
[2023-12-23 08:15:14,514 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 174 transitions. Word has length 299
[2023-12-23 08:15:14,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 08:15:14,516 INFO  L495      AbstractCegarLoop]: Abstraction has 110 states and 174 transitions.
[2023-12-23 08:15:14,516 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 26.0) internal successors, (52), 2 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50)
[2023-12-23 08:15:14,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 174 transitions.
[2023-12-23 08:15:14,520 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2023-12-23 08:15:14,520 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 08:15:14,521 INFO  L195           NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:14,549 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 08:15:14,734 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 08:15:14,735 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 08:15:14,735 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 08:15:14,735 INFO  L85        PathProgramCache]: Analyzing trace with hash 1585357934, now seen corresponding path program 1 times
[2023-12-23 08:15:14,737 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 08:15:14,738 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1309738510]
[2023-12-23 08:15:14,738 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:15:14,738 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 08:15:14,738 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 08:15:14,740 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 08:15:14,741 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 08:15:15,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:15:15,726 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 08:15:15,733 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:15:19,695 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4900 trivial. 0 not checked.
[2023-12-23 08:15:19,696 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 08:15:19,696 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 08:15:19,696 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1309738510]
[2023-12-23 08:15:19,696 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1309738510] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 08:15:19,696 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 08:15:19,696 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 08:15:19,696 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880346079]
[2023-12-23 08:15:19,697 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 08:15:19,698 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 08:15:19,698 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 08:15:19,699 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 08:15:19,699 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 08:15:19,699 INFO  L87              Difference]: Start difference. First operand 110 states and 174 transitions. Second operand  has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50)
[2023-12-23 08:15:24,641 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:15:24,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 08:15:24,645 INFO  L93              Difference]: Finished difference Result 219 states and 347 transitions.
[2023-12-23 08:15:24,933 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 08:15:24,934 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50) Word has length 299
[2023-12-23 08:15:24,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 08:15:24,937 INFO  L225             Difference]: With dead ends: 219
[2023-12-23 08:15:24,938 INFO  L226             Difference]: Without dead ends: 110
[2023-12-23 08:15:24,938 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 08:15:24,939 INFO  L413           NwaCegarLoop]: 168 mSDtfsCounter, 112 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 102 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2023-12-23 08:15:24,940 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 168 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time]
[2023-12-23 08:15:24,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2023-12-23 08:15:24,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2023-12-23 08:15:24,963 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 110 states, 58 states have (on average 1.2586206896551724) internal successors, (73), 58 states have internal predecessors, (73), 50 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 50 states have call predecessors, (50), 50 states have call successors, (50)
[2023-12-23 08:15:24,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 173 transitions.
[2023-12-23 08:15:24,964 INFO  L78                 Accepts]: Start accepts. Automaton has 110 states and 173 transitions. Word has length 299
[2023-12-23 08:15:24,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 08:15:24,965 INFO  L495      AbstractCegarLoop]: Abstraction has 110 states and 173 transitions.
[2023-12-23 08:15:24,966 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 13.0) internal successors, (52), 3 states have internal predecessors, (52), 1 states have call successors, (50), 1 states have call predecessors, (50), 1 states have return successors, (50), 1 states have call predecessors, (50), 1 states have call successors, (50)
[2023-12-23 08:15:24,966 INFO  L276                IsEmpty]: Start isEmpty. Operand 110 states and 173 transitions.
[2023-12-23 08:15:24,970 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2023-12-23 08:15:24,970 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 08:15:24,970 INFO  L195           NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:25,001 INFO  L552       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)] Ended with exit code 0
[2023-12-23 08:15:25,191 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 08:15:25,192 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 08:15:25,193 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 08:15:25,193 INFO  L85        PathProgramCache]: Analyzing trace with hash 767709484, now seen corresponding path program 1 times
[2023-12-23 08:15:25,193 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 08:15:25,194 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181623537]
[2023-12-23 08:15:25,194 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:15:25,194 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 08:15:25,194 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 08:15:25,196 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 08:15:25,197 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 08:15:26,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:15:26,338 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-12-23 08:15:26,344 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:15:38,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 824 proven. 264 refuted. 0 times theorem prover too weak. 3812 trivial. 0 not checked.
[2023-12-23 08:15:38,309 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 08:15:40,700 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 08:15:40,700 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181623537]
[2023-12-23 08:15:40,700 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181623537] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 08:15:40,700 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [700329005]
[2023-12-23 08:15:40,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:15:40,701 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 08:15:40,701 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 08:15:40,752 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 08:15:40,773 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2023-12-23 08:15:42,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:15:42,881 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 08:15:42,886 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:15:50,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 777 proven. 135 refuted. 0 times theorem prover too weak. 3988 trivial. 0 not checked.
[2023-12-23 08:15:50,479 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 08:15:51,873 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [700329005] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 08:15:51,873 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 08:15:51,873 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7] total 11
[2023-12-23 08:15:51,874 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520520168]
[2023-12-23 08:15:51,874 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 08:15:51,875 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-23 08:15:51,875 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 08:15:51,876 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-23 08:15:51,876 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342
[2023-12-23 08:15:51,877 INFO  L87              Difference]: Start difference. First operand 110 states and 173 transitions. Second operand  has 12 states, 12 states have (on average 8.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95)
[2023-12-23 08:16:00,680 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.59s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:04,688 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:08,693 WARN  L539   Checker$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 08:16:12,699 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:16,701 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:20,711 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:25,637 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.92s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:29,647 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:33,653 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:37,657 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:41,660 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:45,664 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:49,122 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.46s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:54,206 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.63s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:16:58,224 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:02,228 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:06,250 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:10,272 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:14,289 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:18,298 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:22,306 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 08:17:22,306 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 08:17:22,307 INFO  L93              Difference]: Finished difference Result 339 states and 526 transitions.
[2023-12-23 08:17:22,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-23 08:17:22,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 8.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95) Word has length 299
[2023-12-23 08:17:22,556 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 08:17:22,558 INFO  L225             Difference]: With dead ends: 339
[2023-12-23 08:17:22,558 INFO  L226             Difference]: Without dead ends: 230
[2023-12-23 08:17:22,559 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 1150 GetRequests, 1121 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=288, Invalid=642, Unknown=0, NotChecked=0, Total=930
[2023-12-23 08:17:22,559 INFO  L413           NwaCegarLoop]: 114 mSDtfsCounter, 180 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 135 mSolverCounterUnsat, 20 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 88.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 20 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 89.1s IncrementalHoareTripleChecker+Time
[2023-12-23 08:17:22,560 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 615 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 385 Invalid, 20 Unknown, 0 Unchecked, 89.1s Time]
[2023-12-23 08:17:22,560 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 230 states.
[2023-12-23 08:17:22,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 207.
[2023-12-23 08:17:22,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 207 states, 102 states have (on average 1.1666666666666667) internal successors, (119), 102 states have internal predecessors, (119), 100 states have call successors, (100), 4 states have call predecessors, (100), 4 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100)
[2023-12-23 08:17:22,617 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 319 transitions.
[2023-12-23 08:17:22,617 INFO  L78                 Accepts]: Start accepts. Automaton has 207 states and 319 transitions. Word has length 299
[2023-12-23 08:17:22,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 08:17:22,620 INFO  L495      AbstractCegarLoop]: Abstraction has 207 states and 319 transitions.
[2023-12-23 08:17:22,621 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 8.0) internal successors, (96), 11 states have internal predecessors, (96), 3 states have call successors, (94), 3 states have call predecessors, (94), 5 states have return successors, (95), 3 states have call predecessors, (95), 3 states have call successors, (95)
[2023-12-23 08:17:22,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 207 states and 319 transitions.
[2023-12-23 08:17:22,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2023-12-23 08:17:22,626 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 08:17:22,626 INFO  L195           NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:17:22,648 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 08:17:22,855 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2023-12-23 08:17:23,041 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=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-23 08:17:23,041 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 08:17:23,042 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 08:17:23,042 INFO  L85        PathProgramCache]: Analyzing trace with hash -243407766, now seen corresponding path program 1 times
[2023-12-23 08:17:23,042 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 08:17:23,042 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078124778]
[2023-12-23 08:17:23,042 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:17:23,043 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 08:17:23,043 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 08:17:23,044 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 08:17:23,045 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 08:17:23,937 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:17:23,970 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-23 08:17:23,975 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:17:35,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 2213 proven. 357 refuted. 0 times theorem prover too weak. 2330 trivial. 0 not checked.
[2023-12-23 08:17:35,129 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 08:17:35,755 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 08:17:35,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078124778]
[2023-12-23 08:17:35,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078124778] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 08:17:35,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1890116506]
[2023-12-23 08:17:35,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:17:35,756 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 08:17:35,756 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 08:17:35,757 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 08:17:35,758 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 08:17:39,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:17:39,519 INFO  L262         TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-23 08:17:39,524 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 08:17:46,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 4900 backedges. 2325 proven. 228 refuted. 0 times theorem prover too weak. 2347 trivial. 0 not checked.
[2023-12-23 08:17:46,877 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 08:17:47,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1890116506] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 08:17:47,063 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 08:17:47,063 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9] total 17
[2023-12-23 08:17:47,064 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377654025]
[2023-12-23 08:17:47,064 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 08:17:47,065 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2023-12-23 08:17:47,065 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 08:17:47,067 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2023-12-23 08:17:47,067 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342
[2023-12-23 08:17:47,067 INFO  L87              Difference]: Start difference. First operand 207 states and 319 transitions. Second operand  has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 16 states have internal predecessors, (110), 6 states have call successors, (95), 6 states have call predecessors, (95), 9 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96)
[2023-12-23 08:17:56,940 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:00,950 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:04,952 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:08,957 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:12,964 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:16,971 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:20,986 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:24,995 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:29,010 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:33,892 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.88s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:37,903 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:41,916 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:45,932 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:49,936 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:53,700 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.76s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [0]
[2023-12-23 08:18:54,695 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 08:18:54,695 INFO  L93              Difference]: Finished difference Result 340 states and 511 transitions.
[2023-12-23 08:18:54,923 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-12-23 08:18:54,923 INFO  L78                 Accepts]: Start accepts. Automaton has  has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 16 states have internal predecessors, (110), 6 states have call successors, (95), 6 states have call predecessors, (95), 9 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96) Word has length 299
[2023-12-23 08:18:54,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 08:18:54,925 INFO  L225             Difference]: With dead ends: 340
[2023-12-23 08:18:54,925 INFO  L226             Difference]: Without dead ends: 231
[2023-12-23 08:18:54,926 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 624 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=150, Invalid=500, Unknown=0, NotChecked=0, Total=650
[2023-12-23 08:18:54,927 INFO  L413           NwaCegarLoop]: 112 mSDtfsCounter, 140 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 21 mSolverCounterUnsat, 14 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 14 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 66.8s IncrementalHoareTripleChecker+Time
[2023-12-23 08:18:54,927 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 475 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 604 Invalid, 14 Unknown, 0 Unchecked, 66.8s Time]
[2023-12-23 08:18:54,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 231 states.
[2023-12-23 08:18:54,955 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 223.
[2023-12-23 08:18:54,956 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 223 states, 114 states have (on average 1.1403508771929824) internal successors, (130), 114 states have internal predecessors, (130), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 100 states have call predecessors, (100), 100 states have call successors, (100)
[2023-12-23 08:18:54,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 330 transitions.
[2023-12-23 08:18:54,957 INFO  L78                 Accepts]: Start accepts. Automaton has 223 states and 330 transitions. Word has length 299
[2023-12-23 08:18:54,958 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 08:18:54,958 INFO  L495      AbstractCegarLoop]: Abstraction has 223 states and 330 transitions.
[2023-12-23 08:18:54,958 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 6.470588235294118) internal successors, (110), 16 states have internal predecessors, (110), 6 states have call successors, (95), 6 states have call predecessors, (95), 9 states have return successors, (96), 6 states have call predecessors, (96), 6 states have call successors, (96)
[2023-12-23 08:18:54,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 223 states and 330 transitions.
[2023-12-23 08:18:54,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 300
[2023-12-23 08:18:54,960 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 08:18:54,960 INFO  L195           NwaCegarLoop]: trace histogram [50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:18:54,979 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 08:18:55,187 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 08:18:55,372 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 08:18:55,373 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 08:18:55,373 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 08:18:55,373 INFO  L85        PathProgramCache]: Analyzing trace with hash 14757672, now seen corresponding path program 1 times
[2023-12-23 08:18:55,374 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 08:18:55,374 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [42256299]
[2023-12-23 08:18:55,374 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 08:18:55,374 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 08:18:55,374 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 08:18:55,375 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 08:18:55,377 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 08:18:58,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 08:18:58,216 INFO  L262         TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 43 conjunts are in the unsatisfiable core
[2023-12-23 08:18:58,223 INFO  L285         TraceCheckSpWp]: Computing forward predicates...