/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-100_file-99.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 00:53:08,439 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 00:53:08,507 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 00:53:08,511 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 00:53:08,512 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 00:53:08,531 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 00:53:08,531 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 00:53:08,532 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 00:53:08,532 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 00:53:08,535 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 00:53:08,535 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 00:53:08,535 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 00:53:08,536 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 00:53:08,537 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 00:53:08,537 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 00:53:08,537 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 00:53:08,537 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 00:53:08,538 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 00:53:08,539 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 00:53:08,540 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 00:53:08,540 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 00:53:08,540 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 00:53:08,540 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 00:53:08,540 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 00:53:08,541 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 00:53:08,541 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 00:53:08,542 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 00:53:08,542 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 00:53:08,542 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 00:53:08,718 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 00:53:08,736 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 00:53:08,737 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 00:53:08,738 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 00:53:08,738 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 00:53:08,740 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-99.i
[2023-12-23 00:53:09,676 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 00:53:09,838 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 00:53:09,839 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-100_file-99.i
[2023-12-23 00:53:09,847 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e38c36d/908b05e06d034f9f8ae3329582db341f/FLAGd593fd82c
[2023-12-23 00:53:09,856 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/33e38c36d/908b05e06d034f9f8ae3329582db341f
[2023-12-23 00:53:09,858 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 00:53:09,860 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 00:53:09,862 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 00:53:09,862 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 00:53:09,865 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 00:53:09,866 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:53:09" (1/1) ...
[2023-12-23 00:53:09,867 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34fe218b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:09, skipping insertion in model container
[2023-12-23 00:53:09,867 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 12:53:09" (1/1) ...
[2023-12-23 00:53:09,904 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 00:53:10,028 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-100_file-99.i[916,929]
[2023-12-23 00:53:10,091 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 00:53:10,102 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 00:53:10,119 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-100_file-99.i[916,929]
[2023-12-23 00:53:10,158 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 00:53:10,187 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 00:53:10,187 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10 WrapperNode
[2023-12-23 00:53:10,187 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 00:53:10,189 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 00:53:10,189 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 00:53:10,189 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 00:53:10,193 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,204 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,233 INFO  L138                Inliner]: procedures = 27, calls = 80, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 338
[2023-12-23 00:53:10,233 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 00:53:10,234 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 00:53:10,234 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 00:53:10,234 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 00:53:10,241 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,242 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,246 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,281 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 00:53:10,282 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,282 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,298 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,301 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,304 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,305 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,309 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 00:53:10,310 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 00:53:10,310 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 00:53:10,310 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 00:53:10,310 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (1/1) ...
[2023-12-23 00:53:10,332 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 00:53:10,343 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 00:53:10,357 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 00:53:10,366 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 00:53:10,381 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 00:53:10,382 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 00:53:10,382 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 00:53:10,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 00:53:10,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 00:53:10,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 00:53:10,481 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 00:53:10,485 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 00:53:13,607 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 00:53:13,639 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 00:53:13,639 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 00:53:13,639 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:53:13 BoogieIcfgContainer
[2023-12-23 00:53:13,640 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 00:53:13,641 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 00:53:13,641 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 00:53:13,643 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 00:53:13,643 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 12:53:09" (1/3) ...
[2023-12-23 00:53:13,644 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76549cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:53:13, skipping insertion in model container
[2023-12-23 00:53:13,644 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 12:53:10" (2/3) ...
[2023-12-23 00:53:13,644 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76549cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 12:53:13, skipping insertion in model container
[2023-12-23 00:53:13,644 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 12:53:13" (3/3) ...
[2023-12-23 00:53:13,645 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-100_file-99.i
[2023-12-23 00:53:13,658 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 00:53:13,658 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 00:53:13,713 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 00:53:13,718 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;@575b2367, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 00:53:13,718 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 00:53:13,722 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 153 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67)
[2023-12-23 00:53:13,755 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2023-12-23 00:53:13,755 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:13,756 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:13,757 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:13,762 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:13,762 INFO  L85        PathProgramCache]: Analyzing trace with hash -1608843476, now seen corresponding path program 1 times
[2023-12-23 00:53:13,775 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:13,776 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002180477]
[2023-12-23 00:53:13,776 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:13,777 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 00:53:13,777 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:13,782 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 00:53:13,787 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 00:53:14,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:14,333 INFO  L262         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 00:53:14,352 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:53:14,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 3704 proven. 0 refuted. 0 times theorem prover too weak. 5140 trivial. 0 not checked.
[2023-12-23 00:53:14,430 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:53:14,430 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:53:14,431 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002180477]
[2023-12-23 00:53:14,431 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002180477] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:53:14,431 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:53:14,432 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 00:53:14,433 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889150729]
[2023-12-23 00:53:14,433 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:53:14,438 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 00:53:14,439 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:53:14,465 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 00:53:14,466 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 00:53:14,470 INFO  L87              Difference]: Start difference. First operand  has 153 states, 83 states have (on average 1.4337349397590362) internal successors, (119), 84 states have internal predecessors, (119), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67) Second operand  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67)
[2023-12-23 00:53:15,993 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:53:15,994 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:53:15,994 INFO  L93              Difference]: Finished difference Result 303 states and 571 transitions.
[2023-12-23 00:53:16,024 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 00:53:16,025 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67) Word has length 396
[2023-12-23 00:53:16,025 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:53:16,031 INFO  L225             Difference]: With dead ends: 303
[2023-12-23 00:53:16,031 INFO  L226             Difference]: Without dead ends: 151
[2023-12-23 00:53:16,035 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 395 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 00:53:16,040 INFO  L413           NwaCegarLoop]: 245 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time
[2023-12-23 00:53:16,041 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 245 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time]
[2023-12-23 00:53:16,054 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 151 states.
[2023-12-23 00:53:16,082 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151.
[2023-12-23 00:53:16,083 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 151 states, 82 states have (on average 1.3902439024390243) internal successors, (114), 82 states have internal predecessors, (114), 67 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 67 states have call predecessors, (67), 67 states have call successors, (67)
[2023-12-23 00:53:16,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 248 transitions.
[2023-12-23 00:53:16,090 INFO  L78                 Accepts]: Start accepts. Automaton has 151 states and 248 transitions. Word has length 396
[2023-12-23 00:53:16,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:53:16,091 INFO  L495      AbstractCegarLoop]: Abstraction has 151 states and 248 transitions.
[2023-12-23 00:53:16,092 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 34.0) internal successors, (68), 2 states have internal predecessors, (68), 2 states have call successors, (67), 2 states have call predecessors, (67), 2 states have return successors, (67), 2 states have call predecessors, (67), 2 states have call successors, (67)
[2023-12-23 00:53:16,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 151 states and 248 transitions.
[2023-12-23 00:53:16,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2023-12-23 00:53:16,100 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:16,101 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:16,114 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0
[2023-12-23 00:53:16,314 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 00:53:16,315 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:16,315 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:16,315 INFO  L85        PathProgramCache]: Analyzing trace with hash -935888034, now seen corresponding path program 1 times
[2023-12-23 00:53:16,316 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:16,317 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1259491598]
[2023-12-23 00:53:16,317 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:16,317 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 00:53:16,317 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:16,318 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 00:53:16,319 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 00:53:16,785 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:16,806 INFO  L262         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 00:53:16,814 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:53:16,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked.
[2023-12-23 00:53:16,853 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:53:16,853 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:53:16,853 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1259491598]
[2023-12-23 00:53:16,853 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1259491598] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:53:16,854 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:53:16,854 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 00:53:16,854 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196499976]
[2023-12-23 00:53:16,854 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:53:16,855 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 00:53:16,856 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:53:16,856 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 00:53:16,856 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 00:53:16,857 INFO  L87              Difference]: Start difference. First operand 151 states and 248 transitions. Second operand  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67)
[2023-12-23 00:53:18,190 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:53:18,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:53:18,274 INFO  L93              Difference]: Finished difference Result 404 states and 663 transitions.
[2023-12-23 00:53:18,275 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 00:53:18,275 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 396
[2023-12-23 00:53:18,276 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:53:18,279 INFO  L225             Difference]: With dead ends: 404
[2023-12-23 00:53:18,279 INFO  L226             Difference]: Without dead ends: 254
[2023-12-23 00:53:18,280 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 394 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 00:53:18,281 INFO  L413           NwaCegarLoop]: 347 mSDtfsCounter, 169 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 577 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time
[2023-12-23 00:53:18,281 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 577 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time]
[2023-12-23 00:53:18,282 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 254 states.
[2023-12-23 00:53:18,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 251.
[2023-12-23 00:53:18,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 251 states, 140 states have (on average 1.4) internal successors, (196), 141 states have internal predecessors, (196), 108 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108)
[2023-12-23 00:53:18,311 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 412 transitions.
[2023-12-23 00:53:18,311 INFO  L78                 Accepts]: Start accepts. Automaton has 251 states and 412 transitions. Word has length 396
[2023-12-23 00:53:18,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:53:18,312 INFO  L495      AbstractCegarLoop]: Abstraction has 251 states and 412 transitions.
[2023-12-23 00:53:18,313 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67)
[2023-12-23 00:53:18,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 251 states and 412 transitions.
[2023-12-23 00:53:18,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2023-12-23 00:53:18,317 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:18,317 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:18,346 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 00:53:18,531 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 00:53:18,532 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:18,532 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:18,533 INFO  L85        PathProgramCache]: Analyzing trace with hash 500546142, now seen corresponding path program 1 times
[2023-12-23 00:53:18,534 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:18,534 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2080083548]
[2023-12-23 00:53:18,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:18,534 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 00:53:18,534 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:18,535 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 00:53:18,537 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 00:53:19,012 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:19,033 INFO  L262         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 00:53:19,040 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:53:21,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 1139 proven. 369 refuted. 0 times theorem prover too weak. 7336 trivial. 0 not checked.
[2023-12-23 00:53:21,344 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 00:53:22,349 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 21 proven. 372 refuted. 0 times theorem prover too weak. 8451 trivial. 0 not checked.
[2023-12-23 00:53:22,349 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:53:22,349 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2080083548]
[2023-12-23 00:53:22,350 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2080083548] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 00:53:22,350 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 00:53:22,350 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13
[2023-12-23 00:53:22,350 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366443809]
[2023-12-23 00:53:22,350 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 00:53:22,351 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2023-12-23 00:53:22,351 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:53:22,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2023-12-23 00:53:22,352 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156
[2023-12-23 00:53:22,352 INFO  L87              Difference]: Start difference. First operand 251 states and 412 transitions. Second operand  has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (130), 3 states have call predecessors, (130), 7 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131)
[2023-12-23 00:53:25,055 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:53:26,297 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:53:26,298 INFO  L93              Difference]: Finished difference Result 803 states and 1274 transitions.
[2023-12-23 00:53:26,298 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. 
[2023-12-23 00:53:26,298 INFO  L78                 Accepts]: Start accepts. Automaton has  has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (130), 3 states have call predecessors, (130), 7 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131) Word has length 396
[2023-12-23 00:53:26,299 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:53:26,308 INFO  L225             Difference]: With dead ends: 803
[2023-12-23 00:53:26,308 INFO  L226             Difference]: Without dead ends: 553
[2023-12-23 00:53:26,310 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 812 GetRequests, 780 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=315, Invalid=741, Unknown=0, NotChecked=0, Total=1056
[2023-12-23 00:53:26,313 INFO  L413           NwaCegarLoop]: 317 mSDtfsCounter, 294 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 1040 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 1202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 1040 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time
[2023-12-23 00:53:26,316 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [298 Valid, 1025 Invalid, 1202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 1040 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time]
[2023-12-23 00:53:26,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 553 states.
[2023-12-23 00:53:26,370 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 271.
[2023-12-23 00:53:26,372 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 271 states, 156 states have (on average 1.3461538461538463) internal successors, (210), 157 states have internal predecessors, (210), 108 states have call successors, (108), 6 states have call predecessors, (108), 6 states have return successors, (108), 107 states have call predecessors, (108), 108 states have call successors, (108)
[2023-12-23 00:53:26,373 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 426 transitions.
[2023-12-23 00:53:26,374 INFO  L78                 Accepts]: Start accepts. Automaton has 271 states and 426 transitions. Word has length 396
[2023-12-23 00:53:26,377 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:53:26,377 INFO  L495      AbstractCegarLoop]: Abstraction has 271 states and 426 transitions.
[2023-12-23 00:53:26,377 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 3 states have call successors, (130), 3 states have call predecessors, (130), 7 states have return successors, (131), 3 states have call predecessors, (131), 3 states have call successors, (131)
[2023-12-23 00:53:26,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 271 states and 426 transitions.
[2023-12-23 00:53:26,380 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 397
[2023-12-23 00:53:26,380 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:26,380 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:26,403 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 00:53:26,592 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 00:53:26,593 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:26,593 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:26,593 INFO  L85        PathProgramCache]: Analyzing trace with hash 107519132, now seen corresponding path program 1 times
[2023-12-23 00:53:26,594 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:26,594 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253070505]
[2023-12-23 00:53:26,594 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:26,594 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 00:53:26,594 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:26,595 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 00:53:26,621 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 00:53:27,046 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:27,068 INFO  L262         TraceCheckSpWp]: Trace formula consists of 614 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 00:53:27,075 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:53:29,662 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 27 proven. 2280 refuted. 0 times theorem prover too weak. 6537 trivial. 0 not checked.
[2023-12-23 00:53:29,662 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 00:53:30,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 27 proven. 171 refuted. 0 times theorem prover too weak. 8646 trivial. 0 not checked.
[2023-12-23 00:53:30,353 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:53:30,354 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253070505]
[2023-12-23 00:53:30,354 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [253070505] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 00:53:30,354 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 00:53:30,354 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11
[2023-12-23 00:53:30,354 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275354385]
[2023-12-23 00:53:30,354 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 00:53:30,355 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2023-12-23 00:53:30,355 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:53:30,356 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2023-12-23 00:53:30,356 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2023-12-23 00:53:30,356 INFO  L87              Difference]: Start difference. First operand 271 states and 426 transitions. Second operand  has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134)
[2023-12-23 00:53:34,346 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.88s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:53:34,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:53:34,717 INFO  L93              Difference]: Finished difference Result 643 states and 968 transitions.
[2023-12-23 00:53:34,718 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-12-23 00:53:34,719 INFO  L78                 Accepts]: Start accepts. Automaton has  has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134) Word has length 396
[2023-12-23 00:53:34,719 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:53:34,721 INFO  L225             Difference]: With dead ends: 643
[2023-12-23 00:53:34,721 INFO  L226             Difference]: Without dead ends: 373
[2023-12-23 00:53:34,722 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 801 GetRequests, 783 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=242, Unknown=0, NotChecked=0, Total=380
[2023-12-23 00:53:34,722 INFO  L413           NwaCegarLoop]: 180 mSDtfsCounter, 225 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time
[2023-12-23 00:53:34,723 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 480 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time]
[2023-12-23 00:53:34,723 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 373 states.
[2023-12-23 00:53:34,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 345.
[2023-12-23 00:53:34,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 345 states, 204 states have (on average 1.2843137254901962) internal successors, (262), 207 states have internal predecessors, (262), 126 states have call successors, (126), 14 states have call predecessors, (126), 14 states have return successors, (126), 123 states have call predecessors, (126), 126 states have call successors, (126)
[2023-12-23 00:53:34,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 514 transitions.
[2023-12-23 00:53:34,745 INFO  L78                 Accepts]: Start accepts. Automaton has 345 states and 514 transitions. Word has length 396
[2023-12-23 00:53:34,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:53:34,745 INFO  L495      AbstractCegarLoop]: Abstraction has 345 states and 514 transitions.
[2023-12-23 00:53:34,746 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 12.0) internal successors, (132), 11 states have internal predecessors, (132), 4 states have call successors, (134), 3 states have call predecessors, (134), 5 states have return successors, (134), 4 states have call predecessors, (134), 4 states have call successors, (134)
[2023-12-23 00:53:34,746 INFO  L276                IsEmpty]: Start isEmpty. Operand 345 states and 514 transitions.
[2023-12-23 00:53:34,749 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 398
[2023-12-23 00:53:34,749 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:34,749 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:34,763 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0
[2023-12-23 00:53:34,960 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 00:53:34,961 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:34,961 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:34,962 INFO  L85        PathProgramCache]: Analyzing trace with hash 689206693, now seen corresponding path program 1 times
[2023-12-23 00:53:34,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:34,962 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1509711989]
[2023-12-23 00:53:34,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:34,962 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 00:53:34,963 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:34,963 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 00:53:34,965 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 00:53:35,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:35,440 INFO  L262         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 00:53:35,446 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 00:53:36,183 INFO  L134       CoverageAnalysis]: Checked inductivity of 8844 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8844 trivial. 0 not checked.
[2023-12-23 00:53:36,183 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 00:53:36,183 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 00:53:36,183 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1509711989]
[2023-12-23 00:53:36,183 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1509711989] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 00:53:36,184 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 00:53:36,184 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 00:53:36,184 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619206969]
[2023-12-23 00:53:36,184 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 00:53:36,185 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 00:53:36,185 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 00:53:36,185 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 00:53:36,185 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 00:53:36,186 INFO  L87              Difference]: Start difference. First operand 345 states and 514 transitions. Second operand  has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67)
[2023-12-23 00:53:38,541 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.26s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 00:53:38,669 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 00:53:38,669 INFO  L93              Difference]: Finished difference Result 1033 states and 1540 transitions.
[2023-12-23 00:53:38,670 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 00:53:38,670 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67) Word has length 397
[2023-12-23 00:53:38,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 00:53:38,674 INFO  L225             Difference]: With dead ends: 1033
[2023-12-23 00:53:38,674 INFO  L226             Difference]: Without dead ends: 689
[2023-12-23 00:53:38,675 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 394 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 00:53:38,675 INFO  L413           NwaCegarLoop]: 236 mSDtfsCounter, 56 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2023-12-23 00:53:38,676 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 706 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2023-12-23 00:53:38,676 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 689 states.
[2023-12-23 00:53:38,718 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 687.
[2023-12-23 00:53:38,719 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 687 states, 406 states have (on average 1.2807881773399015) internal successors, (520), 412 states have internal predecessors, (520), 252 states have call successors, (252), 28 states have call predecessors, (252), 28 states have return successors, (252), 246 states have call predecessors, (252), 252 states have call successors, (252)
[2023-12-23 00:53:38,722 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1024 transitions.
[2023-12-23 00:53:38,722 INFO  L78                 Accepts]: Start accepts. Automaton has 687 states and 1024 transitions. Word has length 397
[2023-12-23 00:53:38,723 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 00:53:38,723 INFO  L495      AbstractCegarLoop]: Abstraction has 687 states and 1024 transitions.
[2023-12-23 00:53:38,723 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 1 states have call successors, (67), 1 states have call predecessors, (67), 1 states have return successors, (67), 1 states have call predecessors, (67), 1 states have call successors, (67)
[2023-12-23 00:53:38,723 INFO  L276                IsEmpty]: Start isEmpty. Operand 687 states and 1024 transitions.
[2023-12-23 00:53:38,725 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 398
[2023-12-23 00:53:38,725 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 00:53:38,725 INFO  L195           NwaCegarLoop]: trace histogram [67, 67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:53:38,754 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 00:53:38,942 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 00:53:38,943 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 00:53:38,943 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 00:53:38,943 INFO  L85        PathProgramCache]: Analyzing trace with hash 746464995, now seen corresponding path program 1 times
[2023-12-23 00:53:38,944 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 00:53:38,944 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1056849193]
[2023-12-23 00:53:38,944 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 00:53:38,944 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 00:53:38,944 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 00:53:38,945 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 00:53:38,951 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 00:53:39,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 00:53:39,769 INFO  L262         TraceCheckSpWp]: Trace formula consists of 615 conjuncts, 47 conjunts are in the unsatisfiable core
[2023-12-23 00:53:39,777 INFO  L285         TraceCheckSpWp]: Computing forward predicates...