/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.trace.refinement.strategy FOX -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-29.i


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


This is Ultimate 0.2.5-dev-17387ad-m
[2024-11-06 07:40:34,068 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-06 07:40:34,130 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-06 07:40:34,133 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-06 07:40:34,134 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-06 07:40:34,156 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-06 07:40:34,157 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-06 07:40:34,158 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-06 07:40:34,159 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-06 07:40:34,160 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-06 07:40:34,160 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-06 07:40:34,160 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-06 07:40:34,161 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-06 07:40:34,161 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-06 07:40:34,161 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-06 07:40:34,161 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-06 07:40:34,161 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-06 07:40:34,162 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-06 07:40:34,162 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-06 07:40:34,165 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-06 07:40:34,165 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-06 07:40:34,167 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-06 07:40:34,168 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-06 07:40:34,169 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-06 07:40:34,169 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-06 07:40:34,169 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-06 07:40:34,169 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-06 07:40:34,169 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-06 07:40:34,170 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:40:34,170 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-06 07:40:34,170 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-06 07:40:34,170 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-06 07:40:34,170 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-06 07:40:34,170 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-06 07:40:34,171 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-06 07:40:34,171 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-06 07:40:34,172 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-06 07:40:34,172 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-06 07:40:34,172 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FOX
[2024-11-06 07:40:34,408 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-06 07:40:34,430 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-06 07:40:34,434 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-06 07:40:34,435 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-06 07:40:34,435 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-06 07:40:34,437 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-29.i
[2024-11-06 07:40:35,896 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-06 07:40:36,109 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-06 07:40:36,110 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-29.i
[2024-11-06 07:40:36,120 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888a5c9ef/fcfe3b9141e54b1f88980bcc4cbc5b48/FLAGde05eb530
[2024-11-06 07:40:36,491 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/888a5c9ef/fcfe3b9141e54b1f88980bcc4cbc5b48
[2024-11-06 07:40:36,493 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-06 07:40:36,494 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-06 07:40:36,496 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-06 07:40:36,496 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-06 07:40:36,503 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-06 07:40:36,503 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,504 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a0c570 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36, skipping insertion in model container
[2024-11-06 07:40:36,504 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,536 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-06 07:40:36,719 WARN  L250   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_floatingpointinfluence_has-floats_file-29.i[917,930]
[2024-11-06 07:40:36,754 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:40:36,766 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-06 07:40:36,778 WARN  L250   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_floatingpointinfluence_has-floats_file-29.i[917,930]
[2024-11-06 07:40:36,793 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-06 07:40:36,811 INFO  L204         MainTranslator]: Completed translation
[2024-11-06 07:40:36,811 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36 WrapperNode
[2024-11-06 07:40:36,811 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-06 07:40:36,812 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-06 07:40:36,813 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-06 07:40:36,813 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-06 07:40:36,819 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,828 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,848 INFO  L138                Inliner]: procedures = 27, calls = 19, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 78
[2024-11-06 07:40:36,848 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-06 07:40:36,849 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-06 07:40:36,849 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-06 07:40:36,849 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-06 07:40:36,860 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,860 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,864 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,884 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].
[2024-11-06 07:40:36,884 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,887 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,895 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,898 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,901 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,902 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,906 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-06 07:40:36,907 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-06 07:40:36,908 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-06 07:40:36,908 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-06 07:40:36,908 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (1/1) ...
[2024-11-06 07:40:36,915 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-06 07:40:36,926 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-06 07:40:36,938 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)
[2024-11-06 07:40:36,941 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
[2024-11-06 07:40:36,966 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-06 07:40:36,967 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-06 07:40:36,967 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-06 07:40:36,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-06 07:40:36,967 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-06 07:40:36,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-06 07:40:37,039 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-06 07:40:37,041 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-06 07:40:42,665 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-06 07:40:42,666 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-06 07:40:42,673 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-06 07:40:42,674 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-06 07:40:42,674 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:40:42 BoogieIcfgContainer
[2024-11-06 07:40:42,674 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-06 07:40:42,676 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-06 07:40:42,676 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-06 07:40:42,678 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-06 07:40:42,678 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:40:36" (1/3) ...
[2024-11-06 07:40:42,679 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d19cf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:40:42, skipping insertion in model container
[2024-11-06 07:40:42,679 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:40:36" (2/3) ...
[2024-11-06 07:40:42,679 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d19cf05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:40:42, skipping insertion in model container
[2024-11-06 07:40:42,679 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:40:42" (3/3) ...
[2024-11-06 07:40:42,680 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-29.i
[2024-11-06 07:40:42,691 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-06 07:40:42,691 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-06 07:40:42,730 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-06 07:40:42,734 INFO  L333      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, 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;@26adf634, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-06 07:40:42,735 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-06 07:40:42,738 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 37 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 29 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 07:40:42,744 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-11-06 07:40:42,744 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:40:42,744 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:40:42,745 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:40:42,748 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:40:42,748 INFO  L85        PathProgramCache]: Analyzing trace with hash -1352345360, now seen corresponding path program 1 times
[2024-11-06 07:40:42,756 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:40:42,757 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [483205587]
[2024-11-06 07:40:42,757 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:40:42,757 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
[2024-11-06 07:40:42,757 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 07:40:42,761 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)
[2024-11-06 07:40:42,762 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
[2024-11-06 07:40:42,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:40:43,006 INFO  L255         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-06 07:40:43,010 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:40:43,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2024-11-06 07:40:43,031 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:40:43,031 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:40:43,031 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [483205587]
[2024-11-06 07:40:43,032 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [483205587] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:40:43,032 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 07:40:43,032 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-06 07:40:43,033 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553043429]
[2024-11-06 07:40:43,034 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:40:43,037 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-06 07:40:43,037 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:40:43,052 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-06 07:40:43,053 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:40:43,054 INFO  L87              Difference]: Start difference. First operand  has 37 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 29 states have internal predecessors, (40), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-06 07:40:43,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:40:43,069 INFO  L93              Difference]: Finished difference Result 67 states and 104 transitions.
[2024-11-06 07:40:43,069 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-06 07:40:43,070 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48
[2024-11-06 07:40:43,070 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:40:43,075 INFO  L225             Difference]: With dead ends: 67
[2024-11-06 07:40:43,075 INFO  L226             Difference]: Without dead ends: 33
[2024-11-06 07:40:43,077 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-06 07:40:43,079 INFO  L432           NwaCegarLoop]: 45 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-06 07:40:43,079 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-06 07:40:43,091 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-11-06 07:40:43,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2024-11-06 07:40:43,102 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 07:40:43,103 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 45 transitions.
[2024-11-06 07:40:43,104 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 45 transitions. Word has length 48
[2024-11-06 07:40:43,104 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:40:43,105 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 45 transitions.
[2024-11-06 07:40:43,105 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)
[2024-11-06 07:40:43,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 45 transitions.
[2024-11-06 07:40:43,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-11-06 07:40:43,106 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:40:43,107 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:40:43,116 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 (2)] Ended with exit code 0
[2024-11-06 07:40:43,307 WARN  L453      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
[2024-11-06 07:40:43,308 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:40:43,309 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:40:43,309 INFO  L85        PathProgramCache]: Analyzing trace with hash 1193502324, now seen corresponding path program 1 times
[2024-11-06 07:40:43,309 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:40:43,309 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676065690]
[2024-11-06 07:40:43,310 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:40:43,310 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
[2024-11-06 07:40:43,310 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 07:40:43,313 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)
[2024-11-06 07:40:43,313 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
[2024-11-06 07:40:43,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:40:43,523 INFO  L255         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-06 07:40:43,526 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:40:43,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked.
[2024-11-06 07:40:43,575 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-06 07:40:43,576 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:40:43,576 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676065690]
[2024-11-06 07:40:43,576 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [676065690] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-06 07:40:43,576 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-06 07:40:43,576 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-06 07:40:43,576 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678880414]
[2024-11-06 07:40:43,577 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-06 07:40:43,578 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-06 07:40:43,578 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:40:43,578 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-06 07:40:43,579 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-06 07:40:43,579 INFO  L87              Difference]: Start difference. First operand 33 states and 45 transitions. Second operand  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 07:40:45,590 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:40:48,045 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.42s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:40:52,146 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:40:54,118 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:40:54,240 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:40:54,240 INFO  L93              Difference]: Finished difference Result 77 states and 106 transitions.
[2024-11-06 07:40:54,242 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-06 07:40:54,243 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 48
[2024-11-06 07:40:54,243 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:40:54,249 INFO  L225             Difference]: With dead ends: 77
[2024-11-06 07:40:54,249 INFO  L226             Difference]: Without dead ends: 47
[2024-11-06 07:40:54,253 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-06 07:40:54,255 INFO  L432           NwaCegarLoop]: 39 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time
[2024-11-06 07:40:54,255 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 69 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 1 Unknown, 0 Unchecked, 10.6s Time]
[2024-11-06 07:40:54,256 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2024-11-06 07:40:54,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39.
[2024-11-06 07:40:54,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 39 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 31 states have internal predecessors, (43), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 07:40:54,272 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 55 transitions.
[2024-11-06 07:40:54,272 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 55 transitions. Word has length 48
[2024-11-06 07:40:54,274 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:40:54,274 INFO  L471      AbstractCegarLoop]: Abstraction has 39 states and 55 transitions.
[2024-11-06 07:40:54,274 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6)
[2024-11-06 07:40:54,275 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 55 transitions.
[2024-11-06 07:40:54,275 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2024-11-06 07:40:54,276 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:40:54,276 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:40:54,291 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
[2024-11-06 07:40:54,476 WARN  L453      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
[2024-11-06 07:40:54,477 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:40:54,477 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:40:54,477 INFO  L85        PathProgramCache]: Analyzing trace with hash 1195349366, now seen corresponding path program 1 times
[2024-11-06 07:40:54,478 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:40:54,478 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2007569707]
[2024-11-06 07:40:54,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:40:54,478 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
[2024-11-06 07:40:54,478 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 07:40:54,481 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)
[2024-11-06 07:40:54,482 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
[2024-11-06 07:40:54,710 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:40:54,719 INFO  L255         TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-06 07:40:54,723 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-06 07:40:55,649 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked.
[2024-11-06 07:40:55,650 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-06 07:40:55,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2024-11-06 07:40:55,994 INFO  L136   FreeRefinementEngine]: Strategy FOX found an infeasible trace
[2024-11-06 07:40:55,994 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2007569707]
[2024-11-06 07:40:55,994 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2007569707] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-06 07:40:55,994 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-06 07:40:55,994 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2024-11-06 07:40:55,994 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648505267]
[2024-11-06 07:40:55,994 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-06 07:40:55,995 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2024-11-06 07:40:55,995 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FOX
[2024-11-06 07:40:55,995 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2024-11-06 07:40:55,996 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2024-11-06 07:40:55,996 INFO  L87              Difference]: Start difference. First operand 39 states and 55 transitions. Second operand  has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12)
[2024-11-06 07:40:58,617 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.98s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:41:00,878 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:41:03,750 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:41:07,008 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:41:10,255 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.04s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-06 07:41:10,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-06 07:41:10,679 INFO  L93              Difference]: Finished difference Result 98 states and 130 transitions.
[2024-11-06 07:41:10,680 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2024-11-06 07:41:10,680 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12) Word has length 48
[2024-11-06 07:41:10,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-06 07:41:10,681 INFO  L225             Difference]: With dead ends: 98
[2024-11-06 07:41:10,681 INFO  L226             Difference]: Without dead ends: 62
[2024-11-06 07:41:10,682 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272
[2024-11-06 07:41:10,682 INFO  L432           NwaCegarLoop]: 30 mSDtfsCounter, 161 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time
[2024-11-06 07:41:10,683 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 98 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 14.3s Time]
[2024-11-06 07:41:10,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2024-11-06 07:41:10,689 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 43.
[2024-11-06 07:41:10,690 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 43 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 34 states have internal predecessors, (45), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)
[2024-11-06 07:41:10,691 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions.
[2024-11-06 07:41:10,691 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 48
[2024-11-06 07:41:10,691 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-06 07:41:10,691 INFO  L471      AbstractCegarLoop]: Abstraction has 43 states and 57 transitions.
[2024-11-06 07:41:10,692 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 11 states have internal predecessors, (43), 4 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (12), 2 states have call predecessors, (12), 4 states have call successors, (12)
[2024-11-06 07:41:10,692 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions.
[2024-11-06 07:41:10,693 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2024-11-06 07:41:10,693 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-06 07:41:10,693 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-06 07:41:10,705 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
[2024-11-06 07:41:10,893 WARN  L453      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
[2024-11-06 07:41:10,894 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-06 07:41:10,894 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-06 07:41:10,894 INFO  L85        PathProgramCache]: Analyzing trace with hash -1398596816, now seen corresponding path program 1 times
[2024-11-06 07:41:10,895 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FOX
[2024-11-06 07:41:10,895 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1724551352]
[2024-11-06 07:41:10,895 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-06 07:41:10,895 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
[2024-11-06 07:41:10,895 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2024-11-06 07:41:10,900 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)
[2024-11-06 07:41:10,902 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
[2024-11-06 07:41:11,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-06 07:41:11,110 INFO  L255         TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 20 conjuncts are in the unsatisfiable core
[2024-11-06 07:41:11,118 INFO  L278         TraceCheckSpWp]: Computing forward predicates...