/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 14:51:04,559 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 14:51:04,653 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 14:51:04,659 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 14:51:04,660 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 14:51:04,686 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 14:51:04,687 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 14:51:04,687 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 14:51:04,688 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 14:51:04,692 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 14:51:04,692 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 14:51:04,693 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 14:51:04,693 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 14:51:04,694 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 14:51:04,695 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 14:51:04,695 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 14:51:04,695 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 14:51:04,696 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 14:51:04,696 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 14:51:04,696 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 14:51:04,696 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 14:51:04,697 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 14:51:04,697 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 14:51:04,697 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 14:51:04,697 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 14:51:04,697 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 14:51:04,698 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 14:51:04,698 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 14:51:04,698 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 14:51:04,698 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 14:51:04,699 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 14:51:04,699 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 14:51:04,699 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 14:51:04,700 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 14:51:04,700 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 14:51:04,700 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 14:51:04,700 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 14:51:04,700 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 14:51:04,700 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 14:51:04,701 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 14:51:04,701 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 14:51:04,701 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 14:51:04,701 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 14:51:04,701 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 14:51:04,702 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 14:51:04,702 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 14:51:04,702 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 14:51:04,952 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 14:51:04,977 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 14:51:04,980 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 14:51:04,981 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 14:51:04,984 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 14:51:04,986 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i
[2023-12-23 14:51:06,113 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 14:51:06,317 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 14:51:06,317 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i
[2023-12-23 14:51:06,333 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1649db0f/90a634c2735941b58b647bfa8d235e74/FLAG0ac686b5d
[2023-12-23 14:51:06,350 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1649db0f/90a634c2735941b58b647bfa8d235e74
[2023-12-23 14:51:06,353 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 14:51:06,354 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 14:51:06,356 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 14:51:06,357 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 14:51:06,361 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 14:51:06,362 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,363 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b56ac7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06, skipping insertion in model container
[2023-12-23 14:51:06,363 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,409 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 14:51:06,536 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i[919,932]
[2023-12-23 14:51:06,594 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 14:51:06,614 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 14:51:06,623 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i[919,932]
[2023-12-23 14:51:06,653 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 14:51:06,674 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 14:51:06,675 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06 WrapperNode
[2023-12-23 14:51:06,675 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 14:51:06,676 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 14:51:06,676 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 14:51:06,676 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 14:51:06,681 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,695 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,730 INFO  L138                Inliner]: procedures = 27, calls = 41, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 192
[2023-12-23 14:51:06,730 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 14:51:06,731 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 14:51:06,731 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 14:51:06,731 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 14:51:06,741 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,741 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,746 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,759 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 14:51:06,759 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,759 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,768 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,771 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,774 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,775 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,779 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 14:51:06,780 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 14:51:06,780 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 14:51:06,780 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 14:51:06,781 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (1/1) ...
[2023-12-23 14:51:06,786 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 14:51:06,807 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 14:51:06,830 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 14:51:06,855 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 14:51:06,865 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 14:51:06,865 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 14:51:06,865 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 14:51:06,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 14:51:06,867 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 14:51:06,867 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 14:51:06,946 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 14:51:06,948 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 14:51:07,383 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 14:51:07,449 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 14:51:07,450 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 14:51:07,450 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:51:07 BoogieIcfgContainer
[2023-12-23 14:51:07,450 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 14:51:07,455 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 14:51:07,455 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 14:51:07,458 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 14:51:07,458 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 02:51:06" (1/3) ...
[2023-12-23 14:51:07,459 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe592b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:51:07, skipping insertion in model container
[2023-12-23 14:51:07,460 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 02:51:06" (2/3) ...
[2023-12-23 14:51:07,460 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fe592b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 02:51:07, skipping insertion in model container
[2023-12-23 14:51:07,461 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 02:51:07" (3/3) ...
[2023-12-23 14:51:07,462 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-ci_file-92.i
[2023-12-23 14:51:07,480 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 14:51:07,480 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 14:51:07,518 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 14:51:07,524 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;@75042caf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 14:51:07,524 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 14:51:07,528 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 79 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 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 14:51:07,549 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2023-12-23 14:51:07,549 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:51:07,551 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, 1, 1, 1]
[2023-12-23 14:51:07,551 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:51:07,559 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:51:07,559 INFO  L85        PathProgramCache]: Analyzing trace with hash 1710530495, now seen corresponding path program 1 times
[2023-12-23 14:51:07,574 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:51:07,574 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602178328]
[2023-12-23 14:51:07,575 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:07,579 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 14:51:07,579 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:51:07,581 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 14:51:07,630 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 14:51:07,907 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:07,918 INFO  L262         TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 14:51:07,932 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:08,008 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 774 proven. 0 refuted. 0 times theorem prover too weak. 738 trivial. 0 not checked.
[2023-12-23 14:51:08,009 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 14:51:08,009 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:51:08,010 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602178328]
[2023-12-23 14:51:08,010 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602178328] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 14:51:08,010 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 14:51:08,010 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 14:51:08,012 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246886403]
[2023-12-23 14:51:08,013 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 14:51:08,021 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 14:51:08,021 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:51:08,048 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 14:51:08,048 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 14:51:08,050 INFO  L87              Difference]: Start difference. First operand  has 79 states, 48 states have (on average 1.5) internal successors, (72), 49 states have internal predecessors, (72), 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 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:51:10,397 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2023-12-23 14:51:10,434 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:51:10,435 INFO  L93              Difference]: Finished difference Result 155 states and 282 transitions.
[2023-12-23 14:51:10,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 14:51:10,439 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 175
[2023-12-23 14:51:10,439 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:51:10,445 INFO  L225             Difference]: With dead ends: 155
[2023-12-23 14:51:10,445 INFO  L226             Difference]: Without dead ends: 77
[2023-12-23 14:51:10,448 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 174 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 14:51:10,451 INFO  L413           NwaCegarLoop]: 119 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time
[2023-12-23 14:51:10,452 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 119 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time]
[2023-12-23 14:51:10,466 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2023-12-23 14:51:10,489 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2023-12-23 14:51:10,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 77 states, 47 states have (on average 1.4042553191489362) internal successors, (66), 47 states have internal predecessors, (66), 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 14:51:10,492 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 122 transitions.
[2023-12-23 14:51:10,493 INFO  L78                 Accepts]: Start accepts. Automaton has 77 states and 122 transitions. Word has length 175
[2023-12-23 14:51:10,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:51:10,494 INFO  L495      AbstractCegarLoop]: Abstraction has 77 states and 122 transitions.
[2023-12-23 14:51:10,494 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 21.0) internal successors, (42), 2 states have internal predecessors, (42), 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 14:51:10,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 77 states and 122 transitions.
[2023-12-23 14:51:10,498 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 176
[2023-12-23 14:51:10,498 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:51:10,498 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, 1, 1, 1]
[2023-12-23 14:51:10,509 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 14:51:10,706 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 14:51:10,707 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:51:10,708 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:51:10,708 INFO  L85        PathProgramCache]: Analyzing trace with hash -1274167037, now seen corresponding path program 1 times
[2023-12-23 14:51:10,708 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:51:10,709 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37567677]
[2023-12-23 14:51:10,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:10,709 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 14:51:10,709 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:51:10,710 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 14:51:10,736 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 14:51:10,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:10,968 INFO  L262         TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-23 14:51:10,975 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:11,218 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 14:51:11,218 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 14:51:11,219 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:51:11,219 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37567677]
[2023-12-23 14:51:11,219 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [37567677] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 14:51:11,219 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 14:51:11,219 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 14:51:11,219 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532668090]
[2023-12-23 14:51:11,220 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 14:51:11,223 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 14:51:11,223 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:51:11,224 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 14:51:11,224 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 14:51:11,225 INFO  L87              Difference]: Start difference. First operand 77 states and 122 transitions. Second operand  has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 14:51:11,467 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:51:11,468 INFO  L93              Difference]: Finished difference Result 219 states and 351 transitions.
[2023-12-23 14:51:11,468 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 14:51:11,468 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 175
[2023-12-23 14:51:11,470 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:51:11,471 INFO  L225             Difference]: With dead ends: 219
[2023-12-23 14:51:11,472 INFO  L226             Difference]: Without dead ends: 143
[2023-12-23 14:51:11,473 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 14:51:11,474 INFO  L413           NwaCegarLoop]: 115 mSDtfsCounter, 29 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 14:51:11,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 223 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 14:51:11,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 143 states.
[2023-12-23 14:51:11,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 129.
[2023-12-23 14:51:11,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 129 states, 70 states have (on average 1.3) internal successors, (91), 70 states have internal predecessors, (91), 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 14:51:11,498 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 203 transitions.
[2023-12-23 14:51:11,498 INFO  L78                 Accepts]: Start accepts. Automaton has 129 states and 203 transitions. Word has length 175
[2023-12-23 14:51:11,499 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:51:11,499 INFO  L495      AbstractCegarLoop]: Abstraction has 129 states and 203 transitions.
[2023-12-23 14:51:11,499 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 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 14:51:11,499 INFO  L276                IsEmpty]: Start isEmpty. Operand 129 states and 203 transitions.
[2023-12-23 14:51:11,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 177
[2023-12-23 14:51:11,502 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:51:11,502 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, 1, 1, 1, 1]
[2023-12-23 14:51:11,514 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 14:51:11,712 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 14:51:11,713 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:51:11,713 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:51:11,713 INFO  L85        PathProgramCache]: Analyzing trace with hash 1965858557, now seen corresponding path program 1 times
[2023-12-23 14:51:11,714 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:51:11,714 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035898512]
[2023-12-23 14:51:11,714 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:11,715 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 14:51:11,715 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:51:11,716 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 14:51:11,738 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 14:51:11,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:11,929 INFO  L262         TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 14:51:11,934 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:12,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 711 proven. 27 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked.
[2023-12-23 14:51:12,075 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 14:51:12,139 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:51:12,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035898512]
[2023-12-23 14:51:12,139 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035898512] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 14:51:12,139 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [331129381]
[2023-12-23 14:51:12,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:12,140 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 14:51:12,140 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 14:51:12,182 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 14:51:12,183 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2023-12-23 14:51:12,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:12,664 INFO  L262         TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 14:51:12,668 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:13,001 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 14:51:13,002 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 14:51:13,002 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [331129381] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 14:51:13,002 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 14:51:13,002 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7
[2023-12-23 14:51:13,002 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176692513]
[2023-12-23 14:51:13,002 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 14:51:13,004 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 14:51:13,004 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:51:13,005 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 14:51:13,005 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56
[2023-12-23 14:51:13,006 INFO  L87              Difference]: Start difference. First operand 129 states and 203 transitions. Second operand  has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 14:51:14,091 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:51:14,091 INFO  L93              Difference]: Finished difference Result 290 states and 455 transitions.
[2023-12-23 14:51:14,093 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 14:51:14,093 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 176
[2023-12-23 14:51:14,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:51:14,101 INFO  L225             Difference]: With dead ends: 290
[2023-12-23 14:51:14,101 INFO  L226             Difference]: Without dead ends: 213
[2023-12-23 14:51:14,102 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 373 GetRequests, 366 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72
[2023-12-23 14:51:14,105 INFO  L413           NwaCegarLoop]: 124 mSDtfsCounter, 96 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2023-12-23 14:51:14,107 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 354 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2023-12-23 14:51:14,107 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 213 states.
[2023-12-23 14:51:14,161 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 203.
[2023-12-23 14:51:14,163 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 203 states, 115 states have (on average 1.3217391304347825) internal successors, (152), 115 states have internal predecessors, (152), 84 states have call successors, (84), 3 states have call predecessors, (84), 3 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84)
[2023-12-23 14:51:14,168 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 320 transitions.
[2023-12-23 14:51:14,169 INFO  L78                 Accepts]: Start accepts. Automaton has 203 states and 320 transitions. Word has length 176
[2023-12-23 14:51:14,170 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:51:14,170 INFO  L495      AbstractCegarLoop]: Abstraction has 203 states and 320 transitions.
[2023-12-23 14:51:14,170 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 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 14:51:14,170 INFO  L276                IsEmpty]: Start isEmpty. Operand 203 states and 320 transitions.
[2023-12-23 14:51:14,178 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2023-12-23 14:51:14,178 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:51:14,179 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, 1, 1, 1, 1, 1]
[2023-12-23 14:51:14,190 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 (4)] Forceful destruction successful, exit code 0
[2023-12-23 14:51:14,392 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2023-12-23 14:51:14,588 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2023-12-23 14:51:14,589 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:51:14,589 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:51:14,590 INFO  L85        PathProgramCache]: Analyzing trace with hash 770057126, now seen corresponding path program 1 times
[2023-12-23 14:51:14,590 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:51:14,591 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [132183684]
[2023-12-23 14:51:14,591 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:14,591 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 14:51:14,591 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:51:14,593 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 14:51:14,615 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 14:51:14,798 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:14,807 INFO  L262         TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-12-23 14:51:14,811 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:14,910 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 711 proven. 27 refuted. 0 times theorem prover too weak. 774 trivial. 0 not checked.
[2023-12-23 14:51:14,911 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 14:51:14,957 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 14:51:14,957 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [132183684]
[2023-12-23 14:51:14,957 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [132183684] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 14:51:14,957 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [317577084]
[2023-12-23 14:51:14,957 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:14,958 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 14:51:14,958 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 14:51:14,960 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-23 14:51:14,964 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2023-12-23 14:51:15,713 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:15,722 INFO  L262         TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-23 14:51:15,727 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 14:51:16,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 1512 backedges. 814 proven. 57 refuted. 0 times theorem prover too weak. 641 trivial. 0 not checked.
[2023-12-23 14:51:16,018 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 14:51:16,117 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [317577084] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 14:51:16,118 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 14:51:16,118 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 9
[2023-12-23 14:51:16,118 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196709341]
[2023-12-23 14:51:16,118 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 14:51:16,119 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-23 14:51:16,119 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 14:51:16,120 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-23 14:51:16,120 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110
[2023-12-23 14:51:16,120 INFO  L87              Difference]: Start difference. First operand 203 states and 320 transitions. Second operand  has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40)
[2023-12-23 14:51:17,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 14:51:17,233 INFO  L93              Difference]: Finished difference Result 383 states and 583 transitions.
[2023-12-23 14:51:17,234 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2023-12-23 14:51:17,235 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40) Word has length 177
[2023-12-23 14:51:17,235 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 14:51:17,238 INFO  L225             Difference]: With dead ends: 383
[2023-12-23 14:51:17,238 INFO  L226             Difference]: Without dead ends: 233
[2023-12-23 14:51:17,240 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 389 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272
[2023-12-23 14:51:17,248 INFO  L413           NwaCegarLoop]: 74 mSDtfsCounter, 178 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2023-12-23 14:51:17,249 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 170 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2023-12-23 14:51:17,252 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 233 states.
[2023-12-23 14:51:17,294 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 227.
[2023-12-23 14:51:17,295 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 227 states, 133 states have (on average 1.263157894736842) internal successors, (168), 133 states have internal predecessors, (168), 84 states have call successors, (84), 9 states have call predecessors, (84), 9 states have return successors, (84), 84 states have call predecessors, (84), 84 states have call successors, (84)
[2023-12-23 14:51:17,296 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 336 transitions.
[2023-12-23 14:51:17,297 INFO  L78                 Accepts]: Start accepts. Automaton has 227 states and 336 transitions. Word has length 177
[2023-12-23 14:51:17,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 14:51:17,298 INFO  L495      AbstractCegarLoop]: Abstraction has 227 states and 336 transitions.
[2023-12-23 14:51:17,298 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (39), 4 states have call predecessors, (39), 6 states have return successors, (40), 4 states have call predecessors, (40), 4 states have call successors, (40)
[2023-12-23 14:51:17,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 227 states and 336 transitions.
[2023-12-23 14:51:17,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2023-12-23 14:51:17,301 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 14:51:17,302 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, 1, 1, 1, 1, 1]
[2023-12-23 14:51:17,311 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Forceful destruction successful, exit code 0
[2023-12-23 14:51:17,518 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 (6)] Ended with exit code 0
[2023-12-23 14:51:17,711 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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 14:51:17,712 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 14:51:17,712 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 14:51:17,712 INFO  L85        PathProgramCache]: Analyzing trace with hash -241060124, now seen corresponding path program 1 times
[2023-12-23 14:51:17,713 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 14:51:17,713 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [662056583]
[2023-12-23 14:51:17,713 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 14:51:17,713 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 14:51:17,714 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 14:51:17,715 INFO  L229       MonitoredProcess]: Starting monitored process 8 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 14:51:17,717 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 (8)] Waiting until timeout for monitored process
[2023-12-23 14:51:18,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 14:51:18,020 INFO  L262         TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 38 conjunts are in the unsatisfiable core
[2023-12-23 14:51:18,027 INFO  L285         TraceCheckSpWp]: Computing forward predicates...