/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-pr-ci_file-11.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 10:25:43,182 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 10:25:43,254 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 10:25:43,257 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 10:25:43,257 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 10:25:43,279 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 10:25:43,279 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 10:25:43,280 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 10:25:43,280 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 10:25:43,283 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 10:25:43,284 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 10:25:43,284 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 10:25:43,285 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 10:25:43,285 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 10:25:43,286 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 10:25:43,286 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 10:25:43,286 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 10:25:43,286 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 10:25:43,287 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 10:25:43,287 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 10:25:43,287 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 10:25:43,287 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 10:25:43,287 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 10:25:43,288 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 10:25:43,289 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 10:25:43,289 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 10:25:43,290 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 10:25:43,290 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 10:25:43,291 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 10:25:43,291 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 10:25:43,291 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 10:25:43,291 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 10:25:43,291 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 10:25:43,292 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 10:25:43,292 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 10:25:43,292 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 10:25:43,448 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 10:25:43,479 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 10:25:43,481 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 10:25:43,482 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 10:25:43,482 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 10:25:43,483 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-11.i
[2023-12-23 10:25:44,644 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 10:25:44,824 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 10:25:44,824 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pr-ci_file-11.i
[2023-12-23 10:25:44,831 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbfce8a1e/08d518bb689a48ec89e3bbc906caceec/FLAG33e61748a
[2023-12-23 10:25:44,841 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cbfce8a1e/08d518bb689a48ec89e3bbc906caceec
[2023-12-23 10:25:44,842 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 10:25:44,843 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 10:25:44,844 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 10:25:44,844 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 10:25:44,847 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 10:25:44,848 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:25:44" (1/1) ...
[2023-12-23 10:25:44,849 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8c7c9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:44, skipping insertion in model container
[2023-12-23 10:25:44,849 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:25:44" (1/1) ...
[2023-12-23 10:25:44,875 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 10:25:44,982 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-pr-ci_file-11.i[919,932]
[2023-12-23 10:25:45,026 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 10:25:45,039 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 10:25:45,049 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-pr-ci_file-11.i[919,932]
[2023-12-23 10:25:45,077 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 10:25:45,094 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 10:25:45,094 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45 WrapperNode
[2023-12-23 10:25:45,094 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 10:25:45,097 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 10:25:45,097 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 10:25:45,097 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 10:25:45,104 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,128 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,153 INFO  L138                Inliner]: procedures = 27, calls = 37, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 180
[2023-12-23 10:25:45,153 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 10:25:45,154 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 10:25:45,154 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 10:25:45,154 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 10:25:45,166 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,166 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,170 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,179 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 10:25:45,180 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,180 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,188 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,190 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,192 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,193 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,196 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 10:25:45,197 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 10:25:45,197 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 10:25:45,197 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 10:25:45,197 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (1/1) ...
[2023-12-23 10:25:45,201 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 10:25:45,210 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 10:25:45,238 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 10:25:45,254 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 10:25:45,271 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 10:25:45,271 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 10:25:45,271 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 10:25:45,271 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 10:25:45,271 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 10:25:45,271 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 10:25:45,346 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 10:25:45,347 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 10:25:48,276 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 10:25:48,318 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 10:25:48,318 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 10:25:48,319 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:25:48 BoogieIcfgContainer
[2023-12-23 10:25:48,319 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 10:25:48,339 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 10:25:48,339 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 10:25:48,341 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 10:25:48,342 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:25:44" (1/3) ...
[2023-12-23 10:25:48,342 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b91ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:25:48, skipping insertion in model container
[2023-12-23 10:25:48,342 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:25:45" (2/3) ...
[2023-12-23 10:25:48,342 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b91ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:25:48, skipping insertion in model container
[2023-12-23 10:25:48,342 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:25:48" (3/3) ...
[2023-12-23 10:25:48,343 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pr-ci_file-11.i
[2023-12-23 10:25:48,355 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 10:25:48,355 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 10:25:48,388 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 10:25:48,393 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;@7ba7545b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 10:25:48,393 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 10:25:48,398 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 74 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 10:25:48,407 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 151
[2023-12-23 10:25:48,407 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:48,408 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:48,408 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:48,412 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:48,412 INFO  L85        PathProgramCache]: Analyzing trace with hash 90514598, now seen corresponding path program 1 times
[2023-12-23 10:25:48,421 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:48,422 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961176196]
[2023-12-23 10:25:48,422 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:48,422 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 10:25:48,422 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:48,424 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 10:25:48,471 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 10:25:48,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:48,699 INFO  L262         TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 10:25:48,705 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:25:48,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 574 proven. 0 refuted. 0 times theorem prover too weak. 530 trivial. 0 not checked.
[2023-12-23 10:25:48,742 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:25:48,742 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:25:48,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961176196]
[2023-12-23 10:25:48,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [961176196] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:25:48,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:25:48,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 10:25:48,744 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104892471]
[2023-12-23 10:25:48,745 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:25:48,748 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 10:25:48,748 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:25:48,764 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 10:25:48,765 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 10:25:48,767 INFO  L87              Difference]: Start difference. First operand  has 74 states, 47 states have (on average 1.574468085106383) internal successors, (74), 48 states have internal predecessors, (74), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand  has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 10:25:48,819 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:25:48,819 INFO  L93              Difference]: Finished difference Result 145 states and 266 transitions.
[2023-12-23 10:25:48,822 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 10:25:48,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 150
[2023-12-23 10:25:48,823 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:25:48,830 INFO  L225             Difference]: With dead ends: 145
[2023-12-23 10:25:48,830 INFO  L226             Difference]: Without dead ends: 72
[2023-12-23 10:25:48,833 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 149 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 10:25:48,837 INFO  L413           NwaCegarLoop]: 112 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, 112 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 10:25:48,838 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 10:25:48,849 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2023-12-23 10:25:48,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2023-12-23 10:25:48,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 72 states, 46 states have (on average 1.4565217391304348) internal successors, (67), 46 states have internal predecessors, (67), 24 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2023-12-23 10:25:48,878 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 115 transitions.
[2023-12-23 10:25:48,879 INFO  L78                 Accepts]: Start accepts. Automaton has 72 states and 115 transitions. Word has length 150
[2023-12-23 10:25:48,879 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:25:48,879 INFO  L495      AbstractCegarLoop]: Abstraction has 72 states and 115 transitions.
[2023-12-23 10:25:48,880 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24)
[2023-12-23 10:25:48,880 INFO  L276                IsEmpty]: Start isEmpty. Operand 72 states and 115 transitions.
[2023-12-23 10:25:48,882 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2023-12-23 10:25:48,882 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:48,883 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:48,891 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 10:25:49,084 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 10:25:49,086 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:49,087 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:49,088 INFO  L85        PathProgramCache]: Analyzing trace with hash -1432682036, now seen corresponding path program 1 times
[2023-12-23 10:25:49,091 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:49,091 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401591010]
[2023-12-23 10:25:49,091 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:49,091 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 10:25:49,092 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:49,094 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 10:25:49,098 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 10:25:49,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:49,319 INFO  L262         TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 10:25:49,330 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:25:49,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-23 10:25:49,921 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:25:49,922 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:25:49,922 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401591010]
[2023-12-23 10:25:49,922 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401591010] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:25:49,922 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:25:49,922 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 10:25:49,922 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614489611]
[2023-12-23 10:25:49,936 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:25:49,938 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-23 10:25:49,938 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:25:49,939 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-23 10:25:49,939 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-23 10:25:49,939 INFO  L87              Difference]: Start difference. First operand 72 states and 115 transitions. Second operand  has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 10:25:50,271 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:25:50,271 INFO  L93              Difference]: Finished difference Result 215 states and 344 transitions.
[2023-12-23 10:25:50,273 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-23 10:25:50,273 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 151
[2023-12-23 10:25:50,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:25:50,275 INFO  L225             Difference]: With dead ends: 215
[2023-12-23 10:25:50,275 INFO  L226             Difference]: Without dead ends: 144
[2023-12-23 10:25:50,276 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2023-12-23 10:25:50,277 INFO  L413           NwaCegarLoop]: 110 mSDtfsCounter, 123 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-23 10:25:50,277 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 383 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-23 10:25:50,278 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2023-12-23 10:25:50,293 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 115.
[2023-12-23 10:25:50,294 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 64 states have (on average 1.328125) internal successors, (85), 64 states have internal predecessors, (85), 48 states have call successors, (48), 2 states have call predecessors, (48), 2 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 10:25:50,295 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 181 transitions.
[2023-12-23 10:25:50,295 INFO  L78                 Accepts]: Start accepts. Automaton has 115 states and 181 transitions. Word has length 151
[2023-12-23 10:25:50,295 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:25:50,295 INFO  L495      AbstractCegarLoop]: Abstraction has 115 states and 181 transitions.
[2023-12-23 10:25:50,296 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 10:25:50,296 INFO  L276                IsEmpty]: Start isEmpty. Operand 115 states and 181 transitions.
[2023-12-23 10:25:50,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2023-12-23 10:25:50,297 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:50,297 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:50,319 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 10:25:50,504 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 10:25:50,504 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:50,505 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:50,505 INFO  L85        PathProgramCache]: Analyzing trace with hash 628295253, now seen corresponding path program 1 times
[2023-12-23 10:25:50,505 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:50,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [803953559]
[2023-12-23 10:25:50,506 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:50,506 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 10:25:50,506 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:50,507 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 10:25:50,511 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 10:25:50,665 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:50,672 INFO  L262         TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 10:25:50,676 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:25:50,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 269 proven. 60 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked.
[2023-12-23 10:25:50,845 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 10:25:51,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked.
[2023-12-23 10:25:51,031 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:25:51,034 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [803953559]
[2023-12-23 10:25:51,035 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [803953559] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 10:25:51,036 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 10:25:51,038 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7
[2023-12-23 10:25:51,038 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024327179]
[2023-12-23 10:25:51,038 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 10:25:51,039 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-23 10:25:51,039 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:25:51,040 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-23 10:25:51,040 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2023-12-23 10:25:51,040 INFO  L87              Difference]: Start difference. First operand 115 states and 181 transitions. Second operand  has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45)
[2023-12-23 10:25:51,290 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:25:51,291 INFO  L93              Difference]: Finished difference Result 202 states and 309 transitions.
[2023-12-23 10:25:51,293 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-23 10:25:51,293 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 152
[2023-12-23 10:25:51,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:25:51,294 INFO  L225             Difference]: With dead ends: 202
[2023-12-23 10:25:51,294 INFO  L226             Difference]: Without dead ends: 131
[2023-12-23 10:25:51,295 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 296 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110
[2023-12-23 10:25:51,296 INFO  L413           NwaCegarLoop]: 81 mSDtfsCounter, 99 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 10:25:51,296 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 193 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 10:25:51,296 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2023-12-23 10:25:51,307 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123.
[2023-12-23 10:25:51,307 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 123 states, 70 states have (on average 1.2714285714285714) internal successors, (89), 70 states have internal predecessors, (89), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 10:25:51,308 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 185 transitions.
[2023-12-23 10:25:51,308 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 185 transitions. Word has length 152
[2023-12-23 10:25:51,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:25:51,309 INFO  L495      AbstractCegarLoop]: Abstraction has 123 states and 185 transitions.
[2023-12-23 10:25:51,309 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45)
[2023-12-23 10:25:51,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 185 transitions.
[2023-12-23 10:25:51,310 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 153
[2023-12-23 10:25:51,310 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:51,310 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:51,319 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-12-23 10:25:51,517 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 10:25:51,517 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:51,518 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:51,518 INFO  L85        PathProgramCache]: Analyzing trace with hash 41489239, now seen corresponding path program 1 times
[2023-12-23 10:25:51,518 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:51,518 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2133408596]
[2023-12-23 10:25:51,518 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:51,519 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 10:25:51,519 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:51,520 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 10:25:51,521 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 10:25:51,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:51,645 INFO  L262         TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 10:25:51,649 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:25:51,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 269 proven. 60 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked.
[2023-12-23 10:25:51,821 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 10:25:51,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 9 proven. 60 refuted. 0 times theorem prover too weak. 1035 trivial. 0 not checked.
[2023-12-23 10:25:51,989 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:25:51,989 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2133408596]
[2023-12-23 10:25:51,989 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2133408596] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 10:25:51,989 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 10:25:51,990 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9
[2023-12-23 10:25:51,990 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916648675]
[2023-12-23 10:25:51,990 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 10:25:51,990 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-23 10:25:51,990 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:25:51,991 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-23 10:25:51,991 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2023-12-23 10:25:51,991 INFO  L87              Difference]: Start difference. First operand 123 states and 185 transitions. Second operand  has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45)
[2023-12-23 10:25:52,302 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:25:52,303 INFO  L93              Difference]: Finished difference Result 206 states and 308 transitions.
[2023-12-23 10:25:52,307 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-23 10:25:52,307 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45) Word has length 152
[2023-12-23 10:25:52,308 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:25:52,308 INFO  L225             Difference]: With dead ends: 206
[2023-12-23 10:25:52,308 INFO  L226             Difference]: Without dead ends: 131
[2023-12-23 10:25:52,309 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240
[2023-12-23 10:25:52,310 INFO  L413           NwaCegarLoop]: 76 mSDtfsCounter, 119 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 10:25:52,310 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 179 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 10:25:52,310 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2023-12-23 10:25:52,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 123.
[2023-12-23 10:25:52,331 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 123 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 70 states have internal predecessors, (87), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 10:25:52,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions.
[2023-12-23 10:25:52,333 INFO  L78                 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 152
[2023-12-23 10:25:52,333 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:25:52,334 INFO  L495      AbstractCegarLoop]: Abstraction has 123 states and 183 transitions.
[2023-12-23 10:25:52,334 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.111111111111111) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (44), 2 states have call predecessors, (44), 4 states have return successors, (45), 2 states have call predecessors, (45), 2 states have call successors, (45)
[2023-12-23 10:25:52,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions.
[2023-12-23 10:25:52,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2023-12-23 10:25:52,335 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:52,335 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:52,352 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 10:25:52,541 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 10:25:52,541 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:52,542 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:52,542 INFO  L85        PathProgramCache]: Analyzing trace with hash -1759906752, now seen corresponding path program 1 times
[2023-12-23 10:25:52,542 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:52,542 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690439977]
[2023-12-23 10:25:52,542 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:52,543 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 10:25:52,543 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:52,544 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 10:25:52,569 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 10:25:52,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:52,678 INFO  L262         TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 10:25:52,681 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 10:25:52,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 1104 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1104 trivial. 0 not checked.
[2023-12-23 10:25:52,933 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 10:25:52,933 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 10:25:52,933 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690439977]
[2023-12-23 10:25:52,933 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690439977] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 10:25:52,933 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 10:25:52,933 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 10:25:52,934 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417560964]
[2023-12-23 10:25:52,934 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 10:25:52,934 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 10:25:52,934 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 10:25:52,934 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 10:25:52,934 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 10:25:52,935 INFO  L87              Difference]: Start difference. First operand 123 states and 183 transitions. Second operand  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 10:25:54,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 10:25:54,766 INFO  L93              Difference]: Finished difference Result 206 states and 309 transitions.
[2023-12-23 10:25:54,767 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 10:25:54,767 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24) Word has length 153
[2023-12-23 10:25:54,769 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 10:25:54,770 INFO  L225             Difference]: With dead ends: 206
[2023-12-23 10:25:54,770 INFO  L226             Difference]: Without dead ends: 131
[2023-12-23 10:25:54,770 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 10:25:54,771 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 95 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time
[2023-12-23 10:25:54,771 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 234 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time]
[2023-12-23 10:25:54,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2023-12-23 10:25:54,793 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128.
[2023-12-23 10:25:54,794 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 128 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 48 states have call successors, (48), 4 states have call predecessors, (48), 4 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 10:25:54,809 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 190 transitions.
[2023-12-23 10:25:54,809 INFO  L78                 Accepts]: Start accepts. Automaton has 128 states and 190 transitions. Word has length 153
[2023-12-23 10:25:54,812 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 10:25:54,812 INFO  L495      AbstractCegarLoop]: Abstraction has 128 states and 190 transitions.
[2023-12-23 10:25:54,813 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 1 states have call predecessors, (24), 1 states have call successors, (24)
[2023-12-23 10:25:54,813 INFO  L276                IsEmpty]: Start isEmpty. Operand 128 states and 190 transitions.
[2023-12-23 10:25:54,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2023-12-23 10:25:54,815 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 10:25:54,815 INFO  L195           NwaCegarLoop]: trace histogram [24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:25:54,826 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 10:25:55,027 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 10:25:55,027 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 10:25:55,027 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 10:25:55,028 INFO  L85        PathProgramCache]: Analyzing trace with hash -1152926325, now seen corresponding path program 1 times
[2023-12-23 10:25:55,028 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 10:25:55,028 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1828573610]
[2023-12-23 10:25:55,028 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 10:25:55,028 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 10:25:55,028 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 10:25:55,030 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 10:25:55,033 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 10:25:55,180 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 10:25:55,187 INFO  L262         TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 24 conjunts are in the unsatisfiable core
[2023-12-23 10:25:55,192 INFO  L285         TraceCheckSpWp]: Computing forward predicates...