/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 07:31:14,215 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 07:31:14,265 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-23 07:31:14,268 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 07:31:14,271 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 07:31:14,298 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 07:31:14,298 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 07:31:14,298 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 07:31:14,299 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 07:31:14,302 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 07:31:14,302 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 07:31:14,302 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 07:31:14,303 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 07:31:14,304 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 07:31:14,304 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 07:31:14,304 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 07:31:14,304 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 07:31:14,305 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 07:31:14,305 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 07:31:14,306 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 07:31:14,306 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 07:31:14,306 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 07:31:14,306 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 07:31:14,306 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 07:31:14,307 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 07:31:14,308 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 07:31:14,308 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 07:31:14,308 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 07:31:14,308 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 07:31:14,308 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:31:14,309 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 07:31:14,309 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 07:31:14,310 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 07:31:14,310 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 07:31:14,310 INFO  L153        SettingsManager]:  * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 07:31:14,492 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 07:31:14,511 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 07:31:14,513 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 07:31:14,514 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 07:31:14,514 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 07:31:14,515 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i
[2023-12-23 07:31:15,693 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 07:31:15,842 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 07:31:15,842 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i
[2023-12-23 07:31:15,848 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ab36b93/341e8bfd39f84e2c80ab6eca7fd0d257/FLAG33ddc7973
[2023-12-23 07:31:15,858 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55ab36b93/341e8bfd39f84e2c80ab6eca7fd0d257
[2023-12-23 07:31:15,860 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 07:31:15,861 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 07:31:15,861 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 07:31:15,861 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 07:31:15,865 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 07:31:15,865 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:31:15" (1/1) ...
[2023-12-23 07:31:15,866 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@612ba39b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:15, skipping insertion in model container
[2023-12-23 07:31:15,866 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:31:15" (1/1) ...
[2023-12-23 07:31:15,900 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 07:31:16,022 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932]
[2023-12-23 07:31:16,090 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:31:16,109 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 07:31:16,117 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i[919,932]
[2023-12-23 07:31:16,145 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:31:16,157 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 07:31:16,157 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16 WrapperNode
[2023-12-23 07:31:16,157 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 07:31:16,158 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 07:31:16,158 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 07:31:16,158 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 07:31:16,163 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,171 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,213 INFO  L138                Inliner]: procedures = 27, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191
[2023-12-23 07:31:16,213 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 07:31:16,214 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 07:31:16,214 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 07:31:16,214 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 07:31:16,229 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,229 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,236 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,247 INFO  L175           MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0].
[2023-12-23 07:31:16,248 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,248 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,256 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,259 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,276 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,278 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,281 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 07:31:16,288 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 07:31:16,288 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 07:31:16,288 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 07:31:16,289 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (1/1) ...
[2023-12-23 07:31:16,293 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:31:16,315 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 07:31:16,326 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2023-12-23 07:31:16,335 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2023-12-23 07:31:16,349 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 07:31:16,349 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 07:31:16,349 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 07:31:16,350 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 07:31:16,350 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 07:31:16,351 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 07:31:16,442 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 07:31:16,445 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 07:31:17,275 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 07:31:17,345 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 07:31:17,345 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 07:31:17,346 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:17 BoogieIcfgContainer
[2023-12-23 07:31:17,346 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 07:31:17,348 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 07:31:17,348 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 07:31:17,350 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 07:31:17,350 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:31:15" (1/3) ...
[2023-12-23 07:31:17,350 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1727608d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:17, skipping insertion in model container
[2023-12-23 07:31:17,350 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:31:16" (2/3) ...
[2023-12-23 07:31:17,351 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1727608d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:31:17, skipping insertion in model container
[2023-12-23 07:31:17,351 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:31:17" (3/3) ...
[2023-12-23 07:31:17,351 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-56.i
[2023-12-23 07:31:17,363 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 07:31:17,364 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 07:31:17,397 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 07:31:17,402 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;@7f2c1a3b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 07:31:17,402 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 07:31:17,405 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 80 states, 47 states have (on average 1.446808510638298) internal successors, (68), 48 states have internal predecessors, (68), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 07:31:17,417 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2023-12-23 07:31:17,417 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:31:17,417 INFO  L195           NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 07:31:17,418 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:31:17,421 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:31:17,421 INFO  L85        PathProgramCache]: Analyzing trace with hash -1682211079, now seen corresponding path program 1 times
[2023-12-23 07:31:17,432 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:31:17,433 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [746193833]
[2023-12-23 07:31:17,433 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:17,436 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:17,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:31:17,438 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 07:31:17,452 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-12-23 07:31:17,731 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:17,744 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 07:31:17,756 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:31:17,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 874 proven. 0 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked.
[2023-12-23 07:31:17,806 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:31:17,807 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:31:17,807 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [746193833]
[2023-12-23 07:31:17,807 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [746193833] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:31:17,807 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:31:17,808 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 07:31:17,810 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822409881]
[2023-12-23 07:31:17,810 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:31:17,813 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 07:31:17,814 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:31:17,843 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 07:31:17,843 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 07:31:17,845 INFO  L87              Difference]: Start difference. First operand  has 80 states, 47 states have (on average 1.446808510638298) internal successors, (68), 48 states have internal predecessors, (68), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) Second operand  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2023-12-23 07:31:17,908 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:31:17,909 INFO  L93              Difference]: Finished difference Result 156 states and 282 transitions.
[2023-12-23 07:31:17,913 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 07:31:17,915 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 187
[2023-12-23 07:31:17,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:31:17,922 INFO  L225             Difference]: With dead ends: 156
[2023-12-23 07:31:17,922 INFO  L226             Difference]: Without dead ends: 77
[2023-12-23 07:31:17,926 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 07:31:17,930 INFO  L413           NwaCegarLoop]: 117 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, 117 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-23 07:31:17,931 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 117 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 07:31:17,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-12-23 07:31:17,964 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2023-12-23 07:31:17,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 07:31:17,967 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 120 transitions.
[2023-12-23 07:31:17,968 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 120 transitions. Word has length 187
[2023-12-23 07:31:17,968 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:31:17,968 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 120 transitions.
[2023-12-23 07:31:17,968 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 22.0) internal successors, (44), 2 states have internal predecessors, (44), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30)
[2023-12-23 07:31:17,969 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 120 transitions.
[2023-12-23 07:31:17,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2023-12-23 07:31:17,971 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:31:17,976 INFO  L195           NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 07:31:17,985 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
[2023-12-23 07:31:18,185 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:18,185 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:31:18,186 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:31:18,186 INFO  L85        PathProgramCache]: Analyzing trace with hash 2034273473, now seen corresponding path program 1 times
[2023-12-23 07:31:18,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:31:18,187 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670287522]
[2023-12-23 07:31:18,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:18,187 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:18,187 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:31:18,188 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 07:31:18,214 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-12-23 07:31:18,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:18,476 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 07:31:18,482 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:31:19,021 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 558 proven. 141 refuted. 0 times theorem prover too weak. 1041 trivial. 0 not checked.
[2023-12-23 07:31:19,021 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:31:19,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 27 proven. 144 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked.
[2023-12-23 07:31:19,532 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:31:19,535 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670287522]
[2023-12-23 07:31:19,536 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [670287522] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 07:31:19,536 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 07:31:19,536 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13
[2023-12-23 07:31:19,536 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848347819]
[2023-12-23 07:31:19,537 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 07:31:19,540 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-23 07:31:19,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:31:19,542 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-23 07:31:19,542 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2023-12-23 07:31:19,543 INFO  L87              Difference]: Start difference. First operand 77 states and 120 transitions. Second operand  has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 3 states have call successors, (55), 3 states have call predecessors, (55), 7 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56)
[2023-12-23 07:31:20,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:31:20,174 INFO  L93              Difference]: Finished difference Result 161 states and 243 transitions.
[2023-12-23 07:31:20,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-12-23 07:31:20,182 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 3 states have call successors, (55), 3 states have call predecessors, (55), 7 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56) Word has length 187
[2023-12-23 07:31:20,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:31:20,183 INFO  L225             Difference]: With dead ends: 161
[2023-12-23 07:31:20,183 INFO  L226             Difference]: Without dead ends: 85
[2023-12-23 07:31:20,184 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 362 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=184, Invalid=368, Unknown=0, NotChecked=0, Total=552
[2023-12-23 07:31:20,185 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 132 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 07:31:20,185 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 244 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 07:31:20,186 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2023-12-23 07:31:20,205 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83.
[2023-12-23 07:31:20,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83 states, 49 states have (on average 1.2040816326530612) internal successors, (59), 49 states have internal predecessors, (59), 30 states have call successors, (30), 3 states have call predecessors, (30), 3 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 07:31:20,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 119 transitions.
[2023-12-23 07:31:20,212 INFO  L78                 Accepts]: Start accepts. Automaton has 83 states and 119 transitions. Word has length 187
[2023-12-23 07:31:20,213 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:31:20,214 INFO  L495      AbstractCegarLoop]: Abstraction has 83 states and 119 transitions.
[2023-12-23 07:31:20,214 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 3 states have call successors, (55), 3 states have call predecessors, (55), 7 states have return successors, (56), 3 states have call predecessors, (56), 3 states have call successors, (56)
[2023-12-23 07:31:20,214 INFO  L276                IsEmpty]: Start isEmpty. Operand 83 states and 119 transitions.
[2023-12-23 07:31:20,221 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2023-12-23 07:31:20,222 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:31:20,222 INFO  L195           NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 07:31:20,240 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0
[2023-12-23 07:31:20,433 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 07:31:20,434 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:31:20,434 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:31:20,435 INFO  L85        PathProgramCache]: Analyzing trace with hash 1013205119, now seen corresponding path program 1 times
[2023-12-23 07:31:20,435 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:31:20,435 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1884772587]
[2023-12-23 07:31:20,436 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:20,436 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:20,436 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:31:20,437 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 07:31:20,439 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 07:31:20,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:20,700 INFO  L262         TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-23 07:31:20,704 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:31:21,054 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 929 proven. 108 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked.
[2023-12-23 07:31:21,055 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:31:21,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 60 proven. 111 refuted. 0 times theorem prover too weak. 1569 trivial. 0 not checked.
[2023-12-23 07:31:21,338 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:31:21,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1884772587]
[2023-12-23 07:31:21,339 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1884772587] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 07:31:21,339 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 07:31:21,339 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13
[2023-12-23 07:31:21,339 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546150962]
[2023-12-23 07:31:21,339 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 07:31:21,340 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-23 07:31:21,340 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:31:21,340 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-23 07:31:21,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156
[2023-12-23 07:31:21,341 INFO  L87              Difference]: Start difference. First operand 83 states and 119 transitions. Second operand  has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 4 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51)
[2023-12-23 07:31:21,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:31:21,870 INFO  L93              Difference]: Finished difference Result 179 states and 249 transitions.
[2023-12-23 07:31:21,875 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-12-23 07:31:21,876 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 4 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 187
[2023-12-23 07:31:21,876 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:31:21,877 INFO  L225             Difference]: With dead ends: 179
[2023-12-23 07:31:21,877 INFO  L226             Difference]: Without dead ends: 97
[2023-12-23 07:31:21,878 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420
[2023-12-23 07:31:21,879 INFO  L413           NwaCegarLoop]: 67 mSDtfsCounter, 122 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time
[2023-12-23 07:31:21,879 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 174 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time]
[2023-12-23 07:31:21,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2023-12-23 07:31:21,888 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 91.
[2023-12-23 07:31:21,888 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 91 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 30 states have call successors, (30), 5 states have call predecessors, (30), 5 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 07:31:21,888 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 123 transitions.
[2023-12-23 07:31:21,889 INFO  L78                 Accepts]: Start accepts. Automaton has 91 states and 123 transitions. Word has length 187
[2023-12-23 07:31:21,889 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:31:21,889 INFO  L495      AbstractCegarLoop]: Abstraction has 91 states and 123 transitions.
[2023-12-23 07:31:21,889 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 13 states have internal predecessors, (79), 4 states have call successors, (50), 3 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51)
[2023-12-23 07:31:21,889 INFO  L276                IsEmpty]: Start isEmpty. Operand 91 states and 123 transitions.
[2023-12-23 07:31:21,891 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2023-12-23 07:31:21,891 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:31:21,891 INFO  L195           NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 07:31:21,906 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 07:31:22,109 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:22,110 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:31:22,110 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:31:22,110 INFO  L85        PathProgramCache]: Analyzing trace with hash 333146749, now seen corresponding path program 1 times
[2023-12-23 07:31:22,111 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:31:22,111 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1204016422]
[2023-12-23 07:31:22,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:22,111 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:22,111 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:31:22,112 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 07:31:22,121 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 07:31:22,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:22,330 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-23 07:31:22,334 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:31:23,144 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 1145 proven. 141 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked.
[2023-12-23 07:31:23,144 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:31:23,406 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:31:23,406 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1204016422]
[2023-12-23 07:31:23,407 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1204016422] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:31:23,407 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [334991713]
[2023-12-23 07:31:23,407 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:23,407 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 07:31:23,407 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 07:31:23,424 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 07:31:23,432 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2023-12-23 07:31:24,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:24,016 INFO  L262         TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 07:31:24,019 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:31:24,468 INFO  L134       CoverageAnalysis]: Checked inductivity of 1740 backedges. 717 proven. 63 refuted. 0 times theorem prover too weak. 960 trivial. 0 not checked.
[2023-12-23 07:31:24,468 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:31:24,563 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [334991713] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:31:24,563 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 07:31:24,563 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 11
[2023-12-23 07:31:24,563 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247356609]
[2023-12-23 07:31:24,563 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 07:31:24,564 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-23 07:31:24,564 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:31:24,564 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-23 07:31:24,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182
[2023-12-23 07:31:24,565 INFO  L87              Difference]: Start difference. First operand 91 states and 123 transitions. Second operand  has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51)
[2023-12-23 07:31:25,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:31:25,192 INFO  L93              Difference]: Finished difference Result 195 states and 257 transitions.
[2023-12-23 07:31:25,196 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2023-12-23 07:31:25,197 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51) Word has length 187
[2023-12-23 07:31:25,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:31:25,198 INFO  L225             Difference]: With dead ends: 195
[2023-12-23 07:31:25,198 INFO  L226             Difference]: Without dead ends: 105
[2023-12-23 07:31:25,199 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 451 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380
[2023-12-23 07:31:25,199 INFO  L413           NwaCegarLoop]: 58 mSDtfsCounter, 39 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-23 07:31:25,200 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 233 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-23 07:31:25,200 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2023-12-23 07:31:25,208 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 99.
[2023-12-23 07:31:25,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 99 states, 61 states have (on average 1.1147540983606556) internal successors, (68), 61 states have internal predecessors, (68), 30 states have call successors, (30), 7 states have call predecessors, (30), 7 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30)
[2023-12-23 07:31:25,209 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions.
[2023-12-23 07:31:25,209 INFO  L78                 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 187
[2023-12-23 07:31:25,209 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:31:25,209 INFO  L495      AbstractCegarLoop]: Abstraction has 99 states and 128 transitions.
[2023-12-23 07:31:25,210 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 4 states have call successors, (50), 4 states have call predecessors, (50), 7 states have return successors, (51), 4 states have call predecessors, (51), 4 states have call successors, (51)
[2023-12-23 07:31:25,210 INFO  L276                IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions.
[2023-12-23 07:31:25,211 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 189
[2023-12-23 07:31:25,211 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:31:25,211 INFO  L195           NwaCegarLoop]: trace histogram [30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-23 07:31:25,222 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 (5)] Forceful destruction successful, exit code 0
[2023-12-23 07:31:25,425 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2023-12-23 07:31:25,620 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-23 07:31:25,621 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:31:25,622 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:31:25,622 INFO  L85        PathProgramCache]: Analyzing trace with hash 1497049526, now seen corresponding path program 1 times
[2023-12-23 07:31:25,636 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:31:25,636 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [126652573]
[2023-12-23 07:31:25,637 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:31:25,637 INFO  L173          SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:31:25,637 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:31:25,638 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 07:31:25,639 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 07:31:25,831 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:31:25,844 INFO  L262         TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 27 conjunts are in the unsatisfiable core
[2023-12-23 07:31:25,849 INFO  L285         TraceCheckSpWp]: Computing forward predicates...