/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_fillercodesize_ps-cn-10_file-53.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 01:25:59,589 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 01:25:59,628 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 01:25:59,631 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 01:25:59,632 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 01:25:59,646 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 01:25:59,647 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 01:25:59,647 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 01:25:59,648 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 01:25:59,648 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 01:25:59,648 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 01:25:59,648 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 01:25:59,649 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 01:25:59,649 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 01:25:59,649 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 01:25:59,650 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 01:25:59,650 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 01:25:59,650 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 01:25:59,650 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 01:25:59,651 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 01:25:59,651 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 01:25:59,651 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 01:25:59,651 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 01:25:59,651 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 01:25:59,652 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 01:25:59,653 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 01:25:59,653 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 01:25:59,653 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 01:25:59,653 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 01:25:59,653 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 01:25:59,653 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 01:25:59,653 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 01:25:59,654 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 01:25:59,655 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 01:25:59,655 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 01:25:59,655 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 01:25:59,813 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 01:25:59,828 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 01:25:59,830 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 01:25:59,831 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 01:25:59,834 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 01:25:59,835 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-53.i
[2023-12-23 01:26:00,746 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 01:26:00,933 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 01:26:00,934 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-10_file-53.i
[2023-12-23 01:26:00,941 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ce56fe3/1a08e8106d0a4f83a0929926f33c0a27/FLAG0b5ca4d9e
[2023-12-23 01:26:00,950 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99ce56fe3/1a08e8106d0a4f83a0929926f33c0a27
[2023-12-23 01:26:00,952 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 01:26:00,953 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 01:26:00,954 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 01:26:00,954 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 01:26:00,957 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 01:26:00,957 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:26:00" (1/1) ...
[2023-12-23 01:26:00,958 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d8f60f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:00, skipping insertion in model container
[2023-12-23 01:26:00,958 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 01:26:00" (1/1) ...
[2023-12-23 01:26:00,982 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 01:26:01,083 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_fillercodesize_ps-cn-10_file-53.i[915,928]
[2023-12-23 01:26:01,144 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 01:26:01,160 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 01:26:01,168 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_fillercodesize_ps-cn-10_file-53.i[915,928]
[2023-12-23 01:26:01,199 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 01:26:01,210 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 01:26:01,211 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01 WrapperNode
[2023-12-23 01:26:01,211 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 01:26:01,211 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 01:26:01,211 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 01:26:01,212 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 01:26:01,216 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,224 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,254 INFO  L138                Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 178
[2023-12-23 01:26:01,254 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 01:26:01,255 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 01:26:01,255 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 01:26:01,255 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 01:26:01,264 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,264 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,268 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,285 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 01:26:01,286 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,286 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,296 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,301 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,303 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,304 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,311 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 01:26:01,312 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 01:26:01,312 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 01:26:01,312 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 01:26:01,313 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (1/1) ...
[2023-12-23 01:26:01,323 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 01:26:01,332 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 01:26:01,345 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 01:26:01,355 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 01:26:01,371 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 01:26:01,371 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 01:26:01,371 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 01:26:01,372 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 01:26:01,372 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 01:26:01,373 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 01:26:01,458 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 01:26:01,463 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 01:26:02,023 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 01:26:02,085 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 01:26:02,085 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 01:26:02,086 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:26:02 BoogieIcfgContainer
[2023-12-23 01:26:02,086 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 01:26:02,088 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 01:26:02,089 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 01:26:02,091 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 01:26:02,091 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 01:26:00" (1/3) ...
[2023-12-23 01:26:02,092 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d7cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:26:02, skipping insertion in model container
[2023-12-23 01:26:02,092 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 01:26:01" (2/3) ...
[2023-12-23 01:26:02,092 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45d7cd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 01:26:02, skipping insertion in model container
[2023-12-23 01:26:02,092 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 01:26:02" (3/3) ...
[2023-12-23 01:26:02,093 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-10_file-53.i
[2023-12-23 01:26:02,106 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 01:26:02,106 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 01:26:02,140 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 01:26:02,146 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;@48661f7e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 01:26:02,146 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 01:26:02,155 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 71 states, 40 states have (on average 1.4) internal successors, (56), 41 states have internal predecessors, (56), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2023-12-23 01:26:02,164 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2023-12-23 01:26:02,164 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:02,165 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:02,165 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:02,169 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:02,169 INFO  L85        PathProgramCache]: Analyzing trace with hash 844942167, now seen corresponding path program 1 times
[2023-12-23 01:26:02,179 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:02,179 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [242377824]
[2023-12-23 01:26:02,180 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:02,180 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 01:26:02,181 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:02,183 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 01:26:02,184 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 01:26:02,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:02,405 INFO  L262         TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 01:26:02,412 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:26:02,451 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 758 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked.
[2023-12-23 01:26:02,451 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:26:02,452 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:26:02,452 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [242377824]
[2023-12-23 01:26:02,452 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [242377824] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:26:02,452 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:26:02,453 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 01:26:02,454 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529997125]
[2023-12-23 01:26:02,454 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:26:02,462 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 01:26:02,463 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:26:02,486 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 01:26:02,486 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 01:26:02,488 INFO  L87              Difference]: Start difference. First operand  has 71 states, 40 states have (on average 1.4) internal successors, (56), 41 states have internal predecessors, (56), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) 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, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)
[2023-12-23 01:26:02,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:26:02,662 INFO  L93              Difference]: Finished difference Result 139 states and 250 transitions.
[2023-12-23 01:26:02,672 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 01:26:02,674 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, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 170
[2023-12-23 01:26:02,674 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:26:02,678 INFO  L225             Difference]: With dead ends: 139
[2023-12-23 01:26:02,678 INFO  L226             Difference]: Without dead ends: 69
[2023-12-23 01:26:02,681 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 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 01:26:02,684 INFO  L413           NwaCegarLoop]: 104 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 01:26:02,684 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 104 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 01:26:02,694 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2023-12-23 01:26:02,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2023-12-23 01:26:02,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 69 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 39 states have internal predecessors, (51), 28 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28)
[2023-12-23 01:26:02,723 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 107 transitions.
[2023-12-23 01:26:02,724 INFO  L78                 Accepts]: Start accepts. Automaton has 69 states and 107 transitions. Word has length 170
[2023-12-23 01:26:02,724 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:26:02,724 INFO  L495      AbstractCegarLoop]: Abstraction has 69 states and 107 transitions.
[2023-12-23 01:26:02,724 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, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28)
[2023-12-23 01:26:02,724 INFO  L276                IsEmpty]: Start isEmpty. Operand 69 states and 107 transitions.
[2023-12-23 01:26:02,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 171
[2023-12-23 01:26:02,726 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:02,727 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:02,739 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 01:26:02,935 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 01:26:02,936 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:02,936 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:02,936 INFO  L85        PathProgramCache]: Analyzing trace with hash 1563857375, now seen corresponding path program 1 times
[2023-12-23 01:26:02,937 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:02,937 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1005752184]
[2023-12-23 01:26:02,937 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:02,937 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 01:26:02,937 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:02,938 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 01:26:02,939 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 01:26:03,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:03,141 INFO  L262         TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 01:26:03,146 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:26:03,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked.
[2023-12-23 01:26:03,404 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:26:03,405 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:26:03,405 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1005752184]
[2023-12-23 01:26:03,405 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1005752184] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:26:03,405 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:26:03,405 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 01:26:03,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919838274]
[2023-12-23 01:26:03,405 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:26:03,406 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 01:26:03,406 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:26:03,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 01:26:03,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 01:26:03,407 INFO  L87              Difference]: Start difference. First operand 69 states and 107 transitions. Second operand  has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:03,724 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:26:03,724 INFO  L93              Difference]: Finished difference Result 203 states and 315 transitions.
[2023-12-23 01:26:03,724 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 01:26:03,725 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 170
[2023-12-23 01:26:03,725 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:26:03,727 INFO  L225             Difference]: With dead ends: 203
[2023-12-23 01:26:03,727 INFO  L226             Difference]: Without dead ends: 135
[2023-12-23 01:26:03,728 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 01:26:03,729 INFO  L413           NwaCegarLoop]: 100 mSDtfsCounter, 19 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-23 01:26:03,729 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 195 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-23 01:26:03,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2023-12-23 01:26:03,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 133.
[2023-12-23 01:26:03,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 133 states, 74 states have (on average 1.2702702702702702) internal successors, (94), 74 states have internal predecessors, (94), 56 states have call successors, (56), 2 states have call predecessors, (56), 2 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56)
[2023-12-23 01:26:03,766 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 206 transitions.
[2023-12-23 01:26:03,766 INFO  L78                 Accepts]: Start accepts. Automaton has 133 states and 206 transitions. Word has length 170
[2023-12-23 01:26:03,767 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:26:03,767 INFO  L495      AbstractCegarLoop]: Abstraction has 133 states and 206 transitions.
[2023-12-23 01:26:03,767 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 11.0) internal successors, (33), 2 states have internal predecessors, (33), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:03,767 INFO  L276                IsEmpty]: Start isEmpty. Operand 133 states and 206 transitions.
[2023-12-23 01:26:03,769 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2023-12-23 01:26:03,769 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:03,769 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:03,780 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 01:26:03,977 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 01:26:03,978 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:03,978 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:03,979 INFO  L85        PathProgramCache]: Analyzing trace with hash -1355097612, now seen corresponding path program 1 times
[2023-12-23 01:26:03,979 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:03,979 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151224038]
[2023-12-23 01:26:03,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:03,979 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 01:26:03,980 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:03,981 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 01:26:03,982 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 01:26:04,155 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:04,166 INFO  L262         TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-23 01:26:04,170 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:26:04,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 777 proven. 36 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked.
[2023-12-23 01:26:04,375 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 01:26:04,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 45 proven. 36 refuted. 0 times theorem prover too weak. 1431 trivial. 0 not checked.
[2023-12-23 01:26:04,637 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:26:04,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151224038]
[2023-12-23 01:26:04,637 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151224038] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 01:26:04,637 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 01:26:04,637 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12
[2023-12-23 01:26:04,637 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218710838]
[2023-12-23 01:26:04,637 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 01:26:04,638 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2023-12-23 01:26:04,638 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:26:04,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2023-12-23 01:26:04,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2023-12-23 01:26:04,641 INFO  L87              Difference]: Start difference. First operand 133 states and 206 transitions. Second operand  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2023-12-23 01:26:06,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:26:06,335 INFO  L93              Difference]: Finished difference Result 426 states and 642 transitions.
[2023-12-23 01:26:06,340 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. 
[2023-12-23 01:26:06,340 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41) Word has length 171
[2023-12-23 01:26:06,341 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:26:06,343 INFO  L225             Difference]: With dead ends: 426
[2023-12-23 01:26:06,343 INFO  L226             Difference]: Without dead ends: 294
[2023-12-23 01:26:06,344 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 363 GetRequests, 332 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992
[2023-12-23 01:26:06,348 INFO  L413           NwaCegarLoop]: 137 mSDtfsCounter, 262 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-12-23 01:26:06,348 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 496 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-12-23 01:26:06,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 294 states.
[2023-12-23 01:26:06,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 143.
[2023-12-23 01:26:06,371 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 143 states, 82 states have (on average 1.2439024390243902) internal successors, (102), 82 states have internal predecessors, (102), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56)
[2023-12-23 01:26:06,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 214 transitions.
[2023-12-23 01:26:06,372 INFO  L78                 Accepts]: Start accepts. Automaton has 143 states and 214 transitions. Word has length 171
[2023-12-23 01:26:06,372 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:26:06,372 INFO  L495      AbstractCegarLoop]: Abstraction has 143 states and 214 transitions.
[2023-12-23 01:26:06,372 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 3.8333333333333335) internal successors, (46), 12 states have internal predecessors, (46), 2 states have call successors, (40), 2 states have call predecessors, (40), 4 states have return successors, (41), 2 states have call predecessors, (41), 2 states have call successors, (41)
[2023-12-23 01:26:06,373 INFO  L276                IsEmpty]: Start isEmpty. Operand 143 states and 214 transitions.
[2023-12-23 01:26:06,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2023-12-23 01:26:06,374 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:06,375 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:06,391 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 01:26:06,584 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 01:26:06,585 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:06,585 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:06,585 INFO  L85        PathProgramCache]: Analyzing trace with hash -1412355914, now seen corresponding path program 1 times
[2023-12-23 01:26:06,586 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:06,586 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138512828]
[2023-12-23 01:26:06,586 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:06,586 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 01:26:06,586 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:06,587 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 01:26:06,589 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 01:26:06,761 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:06,771 INFO  L262         TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 01:26:06,774 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:26:06,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked.
[2023-12-23 01:26:06,790 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:26:06,790 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:26:06,790 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138512828]
[2023-12-23 01:26:06,790 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1138512828] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:26:06,791 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:26:06,791 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 01:26:06,791 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400579669]
[2023-12-23 01:26:06,791 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:26:06,791 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 01:26:06,791 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:26:06,792 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 01:26:06,792 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 01:26:06,792 INFO  L87              Difference]: Start difference. First operand 143 states and 214 transitions. Second operand  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:07,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:26:07,145 INFO  L93              Difference]: Finished difference Result 361 states and 540 transitions.
[2023-12-23 01:26:07,146 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 01:26:07,146 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 171
[2023-12-23 01:26:07,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:26:07,148 INFO  L225             Difference]: With dead ends: 361
[2023-12-23 01:26:07,148 INFO  L226             Difference]: Without dead ends: 219
[2023-12-23 01:26:07,149 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 01:26:07,149 INFO  L413           NwaCegarLoop]: 200 mSDtfsCounter, 100 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2023-12-23 01:26:07,150 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 295 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2023-12-23 01:26:07,150 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 219 states.
[2023-12-23 01:26:07,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 141.
[2023-12-23 01:26:07,169 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 141 states, 80 states have (on average 1.2375) internal successors, (99), 80 states have internal predecessors, (99), 56 states have call successors, (56), 4 states have call predecessors, (56), 4 states have return successors, (56), 56 states have call predecessors, (56), 56 states have call successors, (56)
[2023-12-23 01:26:07,169 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions.
[2023-12-23 01:26:07,170 INFO  L78                 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 171
[2023-12-23 01:26:07,170 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:26:07,170 INFO  L495      AbstractCegarLoop]: Abstraction has 141 states and 211 transitions.
[2023-12-23 01:26:07,170 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:07,170 INFO  L276                IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions.
[2023-12-23 01:26:07,172 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 172
[2023-12-23 01:26:07,172 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:07,172 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:07,190 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 01:26:07,379 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 01:26:07,380 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:07,380 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:07,380 INFO  L85        PathProgramCache]: Analyzing trace with hash -45461988, now seen corresponding path program 1 times
[2023-12-23 01:26:07,381 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:07,381 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388288890]
[2023-12-23 01:26:07,381 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:07,381 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 01:26:07,381 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:07,382 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 01:26:07,386 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 01:26:07,555 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:07,566 INFO  L262         TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 01:26:07,569 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 01:26:08,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1512 trivial. 0 not checked.
[2023-12-23 01:26:08,167 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 01:26:08,168 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 01:26:08,168 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388288890]
[2023-12-23 01:26:08,168 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [388288890] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 01:26:08,168 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 01:26:08,168 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-23 01:26:08,168 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324647813]
[2023-12-23 01:26:08,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 01:26:08,169 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-12-23 01:26:08,169 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 01:26:08,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-12-23 01:26:08,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2023-12-23 01:26:08,169 INFO  L87              Difference]: Start difference. First operand 141 states and 211 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, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:08,774 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 01:26:08,775 INFO  L93              Difference]: Finished difference Result 352 states and 524 transitions.
[2023-12-23 01:26:08,787 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2023-12-23 01:26:08,787 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, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 171
[2023-12-23 01:26:08,788 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 01:26:08,789 INFO  L225             Difference]: With dead ends: 352
[2023-12-23 01:26:08,789 INFO  L226             Difference]: Without dead ends: 212
[2023-12-23 01:26:08,790 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 167 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 01:26:08,790 INFO  L413           NwaCegarLoop]: 102 mSDtfsCounter, 66 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2023-12-23 01:26:08,791 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 344 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2023-12-23 01:26:08,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212 states.
[2023-12-23 01:26:08,811 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 196.
[2023-12-23 01:26:08,812 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 196 states, 105 states have (on average 1.2) internal successors, (126), 105 states have internal predecessors, (126), 84 states have call successors, (84), 6 states have call predecessors, (84), 6 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84)
[2023-12-23 01:26:08,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 294 transitions.
[2023-12-23 01:26:08,813 INFO  L78                 Accepts]: Start accepts. Automaton has 196 states and 294 transitions. Word has length 171
[2023-12-23 01:26:08,814 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 01:26:08,814 INFO  L495      AbstractCegarLoop]: Abstraction has 196 states and 294 transitions.
[2023-12-23 01:26:08,814 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, (28), 1 states have call predecessors, (28), 1 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28)
[2023-12-23 01:26:08,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 196 states and 294 transitions.
[2023-12-23 01:26:08,815 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2023-12-23 01:26:08,815 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 01:26:08,815 INFO  L195           NwaCegarLoop]: trace histogram [28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:26:08,826 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 01:26:09,023 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 01:26:09,024 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 01:26:09,024 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 01:26:09,024 INFO  L85        PathProgramCache]: Analyzing trace with hash 931450851, now seen corresponding path program 1 times
[2023-12-23 01:26:09,025 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 01:26:09,025 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732466596]
[2023-12-23 01:26:09,025 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 01:26:09,025 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 01:26:09,025 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 01:26:09,026 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 01:26:09,027 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 01:26:09,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 01:26:09,201 INFO  L262         TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-12-23 01:26:09,206 INFO  L285         TraceCheckSpWp]: Computing forward predicates...