/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_normal_file-81.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 17:55:10,331 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 17:55:10,369 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 17:55:10,372 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 17:55:10,372 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 17:55:10,386 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 17:55:10,387 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 17:55:10,387 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 17:55:10,388 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 17:55:10,388 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 17:55:10,388 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 17:55:10,388 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 17:55:10,389 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 17:55:10,389 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 17:55:10,389 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 17:55:10,389 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 17:55:10,390 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 17:55:10,390 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 17:55:10,390 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 17:55:10,390 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 17:55:10,390 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 17:55:10,391 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 17:55:10,391 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 17:55:10,391 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 17:55:10,391 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 17:55:10,392 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 17:55:10,392 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 17:55:10,392 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 17:55:10,392 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 17:55:10,392 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 17:55:10,392 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 17:55:10,393 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 17:55:10,393 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 17:55:10,393 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 17:55:10,393 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 17:55:10,393 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 17:55:10,393 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 17:55:10,394 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 17:55:10,395 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 17:55:10,395 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 17:55:10,395 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 17:55:10,536 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 17:55:10,556 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 17:55:10,558 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 17:55:10,559 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 17:55:10,559 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 17:55:10,560 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i
[2023-12-23 17:55:11,667 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 17:55:11,793 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 17:55:11,793 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_normal_file-81.i
[2023-12-23 17:55:11,808 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2e5f5db/4b30fdbeb1974f83a4173129a89010be/FLAGebc72b3c1
[2023-12-23 17:55:11,818 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb2e5f5db/4b30fdbeb1974f83a4173129a89010be
[2023-12-23 17:55:11,820 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 17:55:11,821 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 17:55:11,821 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 17:55:11,822 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 17:55:11,825 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 17:55:11,825 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:55:11" (1/1) ...
[2023-12-23 17:55:11,826 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2bfd66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:11, skipping insertion in model container
[2023-12-23 17:55:11,826 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 05:55:11" (1/1) ...
[2023-12-23 17:55:11,843 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 17:55:11,934 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_normal_file-81.i[913,926]
[2023-12-23 17:55:11,965 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 17:55:11,975 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 17:55:11,983 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_normal_file-81.i[913,926]
[2023-12-23 17:55:12,001 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 17:55:12,013 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 17:55:12,014 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12 WrapperNode
[2023-12-23 17:55:12,014 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 17:55:12,014 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 17:55:12,015 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 17:55:12,015 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 17:55:12,019 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,026 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,051 INFO  L138                Inliner]: procedures = 27, calls = 39, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 151
[2023-12-23 17:55:12,052 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 17:55:12,052 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 17:55:12,052 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 17:55:12,052 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 17:55:12,060 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,060 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,063 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,072 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 17:55:12,072 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,072 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,078 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,081 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,082 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,083 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,085 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 17:55:12,086 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 17:55:12,086 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 17:55:12,086 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 17:55:12,087 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (1/1) ...
[2023-12-23 17:55:12,090 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 17:55:12,099 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 17:55:12,117 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 17:55:12,124 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 17:55:12,138 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 17:55:12,138 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 17:55:12,138 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 17:55:12,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 17:55:12,140 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 17:55:12,140 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 17:55:12,218 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 17:55:12,220 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 17:55:12,434 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 17:55:12,464 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 17:55:12,464 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 17:55:12,464 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:55:12 BoogieIcfgContainer
[2023-12-23 17:55:12,465 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 17:55:12,466 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 17:55:12,466 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 17:55:12,468 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 17:55:12,469 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 05:55:11" (1/3) ...
[2023-12-23 17:55:12,469 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d156d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:55:12, skipping insertion in model container
[2023-12-23 17:55:12,469 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 05:55:12" (2/3) ...
[2023-12-23 17:55:12,469 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d156d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 05:55:12, skipping insertion in model container
[2023-12-23 17:55:12,469 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 05:55:12" (3/3) ...
[2023-12-23 17:55:12,470 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_normal_file-81.i
[2023-12-23 17:55:12,481 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 17:55:12,482 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 17:55:12,510 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 17:55:12,515 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;@7abef7f2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 17:55:12,515 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 17:55:12,518 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 62 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 17:55:12,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 17:55:12,527 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:55:12,527 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:55:12,528 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:55:12,531 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:55:12,532 INFO  L85        PathProgramCache]: Analyzing trace with hash 2083545382, now seen corresponding path program 1 times
[2023-12-23 17:55:12,540 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:55:12,541 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138521411]
[2023-12-23 17:55:12,541 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:12,541 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 17:55:12,541 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:55:12,544 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 17:55:12,586 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 17:55:12,739 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:12,745 INFO  L262         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 17:55:12,752 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:55:12,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 674 proven. 0 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked.
[2023-12-23 17:55:12,802 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 17:55:12,803 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:55:12,803 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138521411]
[2023-12-23 17:55:12,803 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2138521411] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 17:55:12,804 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 17:55:12,804 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 17:55:12,805 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363525127]
[2023-12-23 17:55:12,805 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:55:12,808 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 17:55:12,808 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:55:12,844 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 17:55:12,845 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 17:55:12,846 INFO  L87              Difference]: Start difference. First operand  has 62 states, 33 states have (on average 1.393939393939394) internal successors, (46), 34 states have internal predecessors, (46), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 17:55:12,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:55:12,889 INFO  L93              Difference]: Finished difference Result 121 states and 220 transitions.
[2023-12-23 17:55:12,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 17:55:12,894 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 156
[2023-12-23 17:55:12,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:55:12,899 INFO  L225             Difference]: With dead ends: 121
[2023-12-23 17:55:12,900 INFO  L226             Difference]: Without dead ends: 60
[2023-12-23 17:55:12,902 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 155 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 17:55:12,904 INFO  L413           NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-23 17:55:12,905 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 17:55:12,915 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2023-12-23 17:55:12,932 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2023-12-23 17:55:12,933 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 26 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 17:55:12,934 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 93 transitions.
[2023-12-23 17:55:12,935 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 93 transitions. Word has length 156
[2023-12-23 17:55:12,936 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:55:12,936 INFO  L495      AbstractCegarLoop]: Abstraction has 60 states and 93 transitions.
[2023-12-23 17:55:12,936 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 17:55:12,936 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 93 transitions.
[2023-12-23 17:55:12,938 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 17:55:12,938 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:55:12,939 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:55:12,953 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 17:55:13,144 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 17:55:13,144 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:55:13,145 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:55:13,145 INFO  L85        PathProgramCache]: Analyzing trace with hash -1075408282, now seen corresponding path program 1 times
[2023-12-23 17:55:13,145 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:55:13,146 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800309420]
[2023-12-23 17:55:13,146 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:13,146 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 17:55:13,146 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:55:13,147 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 17:55:13,148 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 17:55:13,269 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:13,274 INFO  L262         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 17:55:13,279 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:55:13,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 25 proven. 75 refuted. 0 times theorem prover too weak. 1200 trivial. 0 not checked.
[2023-12-23 17:55:13,888 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 17:55:14,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 1225 trivial. 0 not checked.
[2023-12-23 17:55:14,153 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:55:14,153 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800309420]
[2023-12-23 17:55:14,153 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [800309420] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 17:55:14,153 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 17:55:14,153 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14
[2023-12-23 17:55:14,153 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951345490]
[2023-12-23 17:55:14,154 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 17:55:14,155 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-12-23 17:55:14,155 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:55:14,156 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-12-23 17:55:14,156 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182
[2023-12-23 17:55:14,156 INFO  L87              Difference]: Start difference. First operand 60 states and 93 transitions. Second operand  has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52)
[2023-12-23 17:55:15,180 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:55:15,181 INFO  L93              Difference]: Finished difference Result 250 states and 377 transitions.
[2023-12-23 17:55:15,186 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2023-12-23 17:55:15,186 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52) Word has length 156
[2023-12-23 17:55:15,187 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:55:15,189 INFO  L225             Difference]: With dead ends: 250
[2023-12-23 17:55:15,189 INFO  L226             Difference]: Without dead ends: 191
[2023-12-23 17:55:15,190 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870
[2023-12-23 17:55:15,191 INFO  L413           NwaCegarLoop]: 120 mSDtfsCounter, 295 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-23 17:55:15,191 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 407 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-23 17:55:15,192 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 191 states.
[2023-12-23 17:55:15,208 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 64.
[2023-12-23 17:55:15,209 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 64 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 35 states have internal predecessors, (43), 26 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 17:55:15,210 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 95 transitions.
[2023-12-23 17:55:15,210 INFO  L78                 Accepts]: Start accepts. Automaton has 64 states and 95 transitions. Word has length 156
[2023-12-23 17:55:15,210 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:55:15,210 INFO  L495      AbstractCegarLoop]: Abstraction has 64 states and 95 transitions.
[2023-12-23 17:55:15,211 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 3.9285714285714284) internal successors, (55), 14 states have internal predecessors, (55), 4 states have call successors, (52), 3 states have call predecessors, (52), 4 states have return successors, (52), 2 states have call predecessors, (52), 4 states have call successors, (52)
[2023-12-23 17:55:15,211 INFO  L276                IsEmpty]: Start isEmpty. Operand 64 states and 95 transitions.
[2023-12-23 17:55:15,212 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 157
[2023-12-23 17:55:15,212 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:55:15,212 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:55:15,222 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 17:55:15,417 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 17:55:15,417 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:55:15,418 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:55:15,418 INFO  L85        PathProgramCache]: Analyzing trace with hash -1468435292, now seen corresponding path program 1 times
[2023-12-23 17:55:15,418 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:55:15,418 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1338652455]
[2023-12-23 17:55:15,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:15,419 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 17:55:15,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:55:15,420 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 17:55:15,436 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 17:55:15,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:15,540 INFO  L262         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 17:55:15,543 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:55:15,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2023-12-23 17:55:15,675 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 17:55:15,725 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:55:15,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1338652455]
[2023-12-23 17:55:15,726 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1338652455] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 17:55:15,726 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [957002624]
[2023-12-23 17:55:15,726 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:15,726 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 17:55:15,726 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 17:55:15,766 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 17:55:15,767 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 17:55:15,898 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:15,910 INFO  L262         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 17:55:15,914 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:55:16,042 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 585 proven. 51 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked.
[2023-12-23 17:55:16,042 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 17:55:16,070 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [957002624] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 17:55:16,070 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 17:55:16,070 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2023-12-23 17:55:16,071 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117219596]
[2023-12-23 17:55:16,071 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 17:55:16,071 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 17:55:16,071 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:55:16,072 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 17:55:16,072 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-12-23 17:55:16,072 INFO  L87              Difference]: Start difference. First operand 64 states and 95 transitions. Second operand  has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 17:55:16,566 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:55:16,566 INFO  L93              Difference]: Finished difference Result 195 states and 284 transitions.
[2023-12-23 17:55:16,567 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-23 17:55:16,567 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 156
[2023-12-23 17:55:16,567 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:55:16,568 INFO  L225             Difference]: With dead ends: 195
[2023-12-23 17:55:16,568 INFO  L226             Difference]: Without dead ends: 132
[2023-12-23 17:55:16,569 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306
[2023-12-23 17:55:16,570 INFO  L413           NwaCegarLoop]: 110 mSDtfsCounter, 73 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 17:55:16,570 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 273 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 17:55:16,571 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2023-12-23 17:55:16,593 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 68.
[2023-12-23 17:55:16,593 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 68 states, 38 states have (on average 1.1842105263157894) internal successors, (45), 38 states have internal predecessors, (45), 26 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26)
[2023-12-23 17:55:16,594 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 97 transitions.
[2023-12-23 17:55:16,594 INFO  L78                 Accepts]: Start accepts. Automaton has 68 states and 97 transitions. Word has length 156
[2023-12-23 17:55:16,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:55:16,595 INFO  L495      AbstractCegarLoop]: Abstraction has 68 states and 97 transitions.
[2023-12-23 17:55:16,595 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26)
[2023-12-23 17:55:16,595 INFO  L276                IsEmpty]: Start isEmpty. Operand 68 states and 97 transitions.
[2023-12-23 17:55:16,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2023-12-23 17:55:16,596 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:55:16,597 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:55:16,604 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 (4)] Ended with exit code 0
[2023-12-23 17:55:16,805 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 17:55:17,004 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 17:55:17,005 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:55:17,005 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:55:17,006 INFO  L85        PathProgramCache]: Analyzing trace with hash 1722389946, now seen corresponding path program 1 times
[2023-12-23 17:55:17,006 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:55:17,006 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064641926]
[2023-12-23 17:55:17,006 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:17,006 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 17:55:17,006 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:55:17,007 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 17:55:17,031 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 17:55:17,092 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:17,097 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 17:55:17,100 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 17:55:17,232 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 435 proven. 60 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked.
[2023-12-23 17:55:17,232 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 17:55:17,328 INFO  L134       CoverageAnalysis]: Checked inductivity of 1300 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1300 trivial. 0 not checked.
[2023-12-23 17:55:17,330 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 17:55:17,331 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064641926]
[2023-12-23 17:55:17,331 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064641926] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-23 17:55:17,331 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 17:55:17,331 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-12-23 17:55:17,331 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665836995]
[2023-12-23 17:55:17,331 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 17:55:17,332 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 17:55:17,332 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 17:55:17,332 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 17:55:17,332 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 17:55:17,333 INFO  L87              Difference]: Start difference. First operand 68 states and 97 transitions. Second operand  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 17:55:17,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 17:55:17,451 INFO  L93              Difference]: Finished difference Result 163 states and 227 transitions.
[2023-12-23 17:55:17,452 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 17:55:17,452 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26) Word has length 157
[2023-12-23 17:55:17,453 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 17:55:17,453 INFO  L225             Difference]: With dead ends: 163
[2023-12-23 17:55:17,453 INFO  L226             Difference]: Without dead ends: 96
[2023-12-23 17:55:17,454 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 305 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 17:55:17,455 INFO  L413           NwaCegarLoop]: 95 mSDtfsCounter, 34 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 17:55:17,455 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 241 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 17:55:17,455 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2023-12-23 17:55:17,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93.
[2023-12-23 17:55:17,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93 states, 57 states have (on average 1.1754385964912282) internal successors, (67), 58 states have internal predecessors, (67), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 17:55:17,484 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 127 transitions.
[2023-12-23 17:55:17,484 INFO  L78                 Accepts]: Start accepts. Automaton has 93 states and 127 transitions. Word has length 157
[2023-12-23 17:55:17,485 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 17:55:17,485 INFO  L495      AbstractCegarLoop]: Abstraction has 93 states and 127 transitions.
[2023-12-23 17:55:17,486 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 1 states have call successors, (26), 1 states have call predecessors, (26), 1 states have return successors, (26), 1 states have call predecessors, (26), 1 states have call successors, (26)
[2023-12-23 17:55:17,487 INFO  L276                IsEmpty]: Start isEmpty. Operand 93 states and 127 transitions.
[2023-12-23 17:55:17,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2023-12-23 17:55:17,491 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 17:55:17,492 INFO  L195           NwaCegarLoop]: trace histogram [26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:55:17,496 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 17:55:17,698 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 17:55:17,699 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 17:55:17,699 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 17:55:17,699 INFO  L85        PathProgramCache]: Analyzing trace with hash 1722449528, now seen corresponding path program 1 times
[2023-12-23 17:55:17,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 17:55:17,700 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1794902817]
[2023-12-23 17:55:17,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 17:55:17,701 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 17:55:17,701 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 17:55:17,702 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 17:55:17,704 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-12-23 17:55:17,817 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 17:55:17,822 INFO  L262         TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 20 conjunts are in the unsatisfiable core
[2023-12-23 17:55:17,827 INFO  L285         TraceCheckSpWp]: Computing forward predicates...