/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_codestructure_steplocals_file-1.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-22 21:40:04,921 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-22 21:40:04,983 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2023-12-22 21:40:04,987 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-22 21:40:04,987 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-22 21:40:05,014 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-22 21:40:05,015 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-22 21:40:05,015 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-22 21:40:05,016 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-22 21:40:05,018 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-22 21:40:05,019 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-22 21:40:05,019 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-22 21:40:05,019 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-22 21:40:05,020 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-22 21:40:05,021 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-22 21:40:05,021 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-22 21:40:05,021 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-22 21:40:05,021 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-22 21:40:05,021 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-22 21:40:05,022 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-22 21:40:05,022 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-22 21:40:05,023 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-22 21:40:05,023 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-22 21:40:05,023 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-22 21:40:05,023 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-22 21:40:05,023 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-22 21:40:05,024 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-22 21:40:05,024 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-22 21:40:05,024 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-22 21:40:05,024 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-22 21:40:05,025 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-22 21:40:05,025 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-22 21:40:05,025 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-22 21:40:05,025 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-22 21:40:05,025 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 21:40:05,026 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-22 21:40:05,026 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-22 21:40:05,027 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-22 21:40:05,027 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-22 21:40:05,027 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-22 21:40:05,027 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-22 21:40:05,027 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-22 21:40:05,221 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-22 21:40:05,251 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-22 21:40:05,253 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-22 21:40:05,253 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-22 21:40:05,254 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-22 21:40:05,255 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-1.i
[2023-12-22 21:40:06,314 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-22 21:40:06,480 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-22 21:40:06,480 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_codestructure_steplocals_file-1.i
[2023-12-22 21:40:06,487 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360c30af2/fa31805f9c5e4e9ab22a903573951a17/FLAG281cb240d
[2023-12-22 21:40:06,505 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360c30af2/fa31805f9c5e4e9ab22a903573951a17
[2023-12-22 21:40:06,507 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-22 21:40:06,508 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-22 21:40:06,509 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-22 21:40:06,509 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-22 21:40:06,515 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-22 21:40:06,515 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,516 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d733fc3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06, skipping insertion in model container
[2023-12-22 21:40:06,517 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,541 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-22 21:40:06,641 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_codestructure_steplocals_file-1.i[916,929]
[2023-12-22 21:40:06,693 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 21:40:06,710 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-22 21:40:06,719 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_codestructure_steplocals_file-1.i[916,929]
[2023-12-22 21:40:06,762 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-22 21:40:06,779 INFO  L206         MainTranslator]: Completed translation
[2023-12-22 21:40:06,780 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06 WrapperNode
[2023-12-22 21:40:06,780 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-22 21:40:06,788 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-22 21:40:06,788 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-22 21:40:06,788 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-22 21:40:06,793 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,808 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,841 INFO  L138                Inliner]: procedures = 27, calls = 48, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 183
[2023-12-22 21:40:06,841 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-22 21:40:06,841 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-22 21:40:06,842 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-22 21:40:06,842 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-22 21:40:06,849 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,849 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,852 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,861 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].
[2023-12-22 21:40:06,861 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,861 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,868 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,870 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,872 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,873 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,875 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-22 21:40:06,876 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-22 21:40:06,876 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-22 21:40:06,876 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-22 21:40:06,877 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (1/1) ...
[2023-12-22 21:40:06,885 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-22 21:40:06,896 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-22 21:40:06,906 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)
[2023-12-22 21:40:06,914 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
[2023-12-22 21:40:06,930 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-22 21:40:06,931 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-22 21:40:06,931 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-22 21:40:06,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-22 21:40:06,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-22 21:40:06,932 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-22 21:40:06,993 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-22 21:40:06,995 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-22 21:40:07,345 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-22 21:40:07,398 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-22 21:40:07,398 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-22 21:40:07,398 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:40:07 BoogieIcfgContainer
[2023-12-22 21:40:07,399 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-22 21:40:07,400 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-22 21:40:07,400 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-22 21:40:07,402 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-22 21:40:07,402 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 09:40:06" (1/3) ...
[2023-12-22 21:40:07,403 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f67effa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:40:07, skipping insertion in model container
[2023-12-22 21:40:07,403 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 09:40:06" (2/3) ...
[2023-12-22 21:40:07,403 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f67effa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 09:40:07, skipping insertion in model container
[2023-12-22 21:40:07,403 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 09:40:07" (3/3) ...
[2023-12-22 21:40:07,404 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_codestructure_steplocals_file-1.i
[2023-12-22 21:40:07,415 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-22 21:40:07,416 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-22 21:40:07,460 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-22 21:40:07,467 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;@4500e615, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-22 21:40:07,467 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-22 21:40:07,472 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 81 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35)
[2023-12-22 21:40:07,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 210
[2023-12-22 21:40:07,493 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 21:40:07,494 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 21:40:07,495 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 21:40:07,502 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 21:40:07,503 INFO  L85        PathProgramCache]: Analyzing trace with hash -756433311, now seen corresponding path program 1 times
[2023-12-22 21:40:07,513 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 21:40:07,513 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1893296177]
[2023-12-22 21:40:07,513 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 21:40:07,513 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
[2023-12-22 21:40:07,514 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 21:40:07,516 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)
[2023-12-22 21:40:07,517 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
[2023-12-22 21:40:07,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 21:40:07,765 INFO  L262         TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-12-22 21:40:07,774 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 21:40:07,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked.
[2023-12-22 21:40:07,825 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 21:40:07,825 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 21:40:07,825 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1893296177]
[2023-12-22 21:40:07,826 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1893296177] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 21:40:07,826 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 21:40:07,826 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-22 21:40:07,827 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386430750]
[2023-12-22 21:40:07,828 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 21:40:07,831 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-22 21:40:07,831 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 21:40:07,862 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-22 21:40:07,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 21:40:07,864 INFO  L87              Difference]: Start difference. First operand  has 81 states, 43 states have (on average 1.3488372093023255) internal successors, (58), 44 states have internal predecessors, (58), 35 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-22 21:40:08,012 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 21:40:08,012 INFO  L93              Difference]: Finished difference Result 195 states and 358 transitions.
[2023-12-22 21:40:08,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-22 21:40:08,014 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 209
[2023-12-22 21:40:08,015 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 21:40:08,020 INFO  L225             Difference]: With dead ends: 195
[2023-12-22 21:40:08,020 INFO  L226             Difference]: Without dead ends: 115
[2023-12-22 21:40:08,023 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-22 21:40:08,025 INFO  L413           NwaCegarLoop]: 119 mSDtfsCounter, 50 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-22 21:40:08,026 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 228 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-22 21:40:08,037 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2023-12-22 21:40:08,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 112.
[2023-12-22 21:40:08,061 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 112 states, 60 states have (on average 1.2166666666666666) internal successors, (73), 61 states have internal predecessors, (73), 49 states have call successors, (49), 2 states have call predecessors, (49), 2 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49)
[2023-12-22 21:40:08,062 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 171 transitions.
[2023-12-22 21:40:08,063 INFO  L78                 Accepts]: Start accepts. Automaton has 112 states and 171 transitions. Word has length 209
[2023-12-22 21:40:08,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 21:40:08,064 INFO  L495      AbstractCegarLoop]: Abstraction has 112 states and 171 transitions.
[2023-12-22 21:40:08,064 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-22 21:40:08,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 112 states and 171 transitions.
[2023-12-22 21:40:08,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-22 21:40:08,068 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 21:40:08,068 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 21:40:08,077 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-22 21:40:08,275 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
[2023-12-22 21:40:08,275 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 21:40:08,276 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 21:40:08,276 INFO  L85        PathProgramCache]: Analyzing trace with hash -1990050884, now seen corresponding path program 1 times
[2023-12-22 21:40:08,277 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 21:40:08,277 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67047650]
[2023-12-22 21:40:08,277 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 21:40:08,278 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
[2023-12-22 21:40:08,278 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 21:40:08,279 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)
[2023-12-22 21:40:08,280 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
[2023-12-22 21:40:08,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 21:40:08,501 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-22 21:40:08,507 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 21:40:08,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 1572 proven. 96 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked.
[2023-12-22 21:40:08,902 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-22 21:40:09,063 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 21:40:09,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67047650]
[2023-12-22 21:40:09,063 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [67047650] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-22 21:40:09,063 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [917460060]
[2023-12-22 21:40:09,064 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 21:40:09,064 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-22 21:40:09,064 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-22 21:40:09,105 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2023-12-22 21:40:09,109 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2023-12-22 21:40:09,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 21:40:09,636 INFO  L262         TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 9 conjunts are in the unsatisfiable core
[2023-12-22 21:40:09,640 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 21:40:09,900 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 1572 proven. 96 refuted. 0 times theorem prover too weak. 712 trivial. 0 not checked.
[2023-12-22 21:40:09,900 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-22 21:40:09,976 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [917460060] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-22 21:40:09,976 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-22 21:40:09,976 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2023-12-22 21:40:09,977 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673502581]
[2023-12-22 21:40:09,977 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-22 21:40:09,977 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 9 states
[2023-12-22 21:40:09,978 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 21:40:09,978 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2023-12-22 21:40:09,978 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132
[2023-12-22 21:40:09,979 INFO  L87              Difference]: Start difference. First operand 112 states and 171 transitions. Second operand  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)
[2023-12-22 21:40:10,676 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 21:40:10,676 INFO  L93              Difference]: Finished difference Result 247 states and 361 transitions.
[2023-12-22 21:40:10,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2023-12-22 21:40:10,691 INFO  L78                 Accepts]: Start accepts. Automaton has  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35) Word has length 210
[2023-12-22 21:40:10,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 21:40:10,694 INFO  L225             Difference]: With dead ends: 247
[2023-12-22 21:40:10,694 INFO  L226             Difference]: Without dead ends: 136
[2023-12-22 21:40:10,696 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306
[2023-12-22 21:40:10,696 INFO  L413           NwaCegarLoop]: 77 mSDtfsCounter, 49 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-22 21:40:10,697 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 304 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-22 21:40:10,697 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2023-12-22 21:40:10,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128.
[2023-12-22 21:40:10,717 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 128 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 73 states have internal predecessors, (84), 49 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49)
[2023-12-22 21:40:10,718 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 182 transitions.
[2023-12-22 21:40:10,718 INFO  L78                 Accepts]: Start accepts. Automaton has 128 states and 182 transitions. Word has length 210
[2023-12-22 21:40:10,718 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 21:40:10,719 INFO  L495      AbstractCegarLoop]: Abstraction has 128 states and 182 transitions.
[2023-12-22 21:40:10,719 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 9 states have internal predecessors, (50), 3 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (35), 3 states have call predecessors, (35), 3 states have call successors, (35)
[2023-12-22 21:40:10,719 INFO  L276                IsEmpty]: Start isEmpty. Operand 128 states and 182 transitions.
[2023-12-22 21:40:10,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-22 21:40:10,723 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 21:40:10,723 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 21:40:10,733 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2023-12-22 21:40:10,940 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 (3)] Ended with exit code 0
[2023-12-22 21:40:11,131 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,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
[2023-12-22 21:40:11,132 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 21:40:11,132 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 21:40:11,132 INFO  L85        PathProgramCache]: Analyzing trace with hash 106418674, now seen corresponding path program 1 times
[2023-12-22 21:40:11,133 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 21:40:11,133 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1881449331]
[2023-12-22 21:40:11,133 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 21:40:11,133 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
[2023-12-22 21:40:11,133 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 21:40:11,140 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)
[2023-12-22 21:40:11,142 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
[2023-12-22 21:40:11,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 21:40:11,337 INFO  L262         TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-22 21:40:11,340 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-22 21:40:11,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 2380 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2380 trivial. 0 not checked.
[2023-12-22 21:40:11,357 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-22 21:40:11,357 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-22 21:40:11,357 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1881449331]
[2023-12-22 21:40:11,358 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1881449331] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-22 21:40:11,358 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-22 21:40:11,358 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2023-12-22 21:40:11,358 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135355518]
[2023-12-22 21:40:11,358 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-22 21:40:11,358 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-22 21:40:11,359 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-22 21:40:11,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-22 21:40:11,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-22 21:40:11,359 INFO  L87              Difference]: Start difference. First operand 128 states and 182 transitions. Second operand  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-22 21:40:11,482 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-22 21:40:11,482 INFO  L93              Difference]: Finished difference Result 271 states and 383 transitions.
[2023-12-22 21:40:11,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-22 21:40:11,484 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35) Word has length 210
[2023-12-22 21:40:11,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-22 21:40:11,486 INFO  L225             Difference]: With dead ends: 271
[2023-12-22 21:40:11,486 INFO  L226             Difference]: Without dead ends: 144
[2023-12-22 21:40:11,487 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-22 21:40:11,489 INFO  L413           NwaCegarLoop]: 123 mSDtfsCounter, 25 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-22 21:40:11,489 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 337 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-22 21:40:11,490 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2023-12-22 21:40:11,499 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 130.
[2023-12-22 21:40:11,499 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 130 states, 74 states have (on average 1.162162162162162) internal successors, (86), 75 states have internal predecessors, (86), 49 states have call successors, (49), 6 states have call predecessors, (49), 6 states have return successors, (49), 48 states have call predecessors, (49), 49 states have call successors, (49)
[2023-12-22 21:40:11,500 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 184 transitions.
[2023-12-22 21:40:11,500 INFO  L78                 Accepts]: Start accepts. Automaton has 130 states and 184 transitions. Word has length 210
[2023-12-22 21:40:11,501 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-22 21:40:11,501 INFO  L495      AbstractCegarLoop]: Abstraction has 130 states and 184 transitions.
[2023-12-22 21:40:11,501 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 1 states have call successors, (35), 1 states have call predecessors, (35), 1 states have return successors, (35), 1 states have call predecessors, (35), 1 states have call successors, (35)
[2023-12-22 21:40:11,501 INFO  L276                IsEmpty]: Start isEmpty. Operand 130 states and 184 transitions.
[2023-12-22 21:40:11,503 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 211
[2023-12-22 21:40:11,503 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-22 21:40:11,503 INFO  L195           NwaCegarLoop]: trace histogram [35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-12-22 21:40:11,510 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-22 21:40:11,710 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
[2023-12-22 21:40:11,711 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-22 21:40:11,711 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-22 21:40:11,711 INFO  L85        PathProgramCache]: Analyzing trace with hash 49160372, now seen corresponding path program 1 times
[2023-12-22 21:40:11,712 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-22 21:40:11,712 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [220149779]
[2023-12-22 21:40:11,712 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-22 21:40:11,712 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
[2023-12-22 21:40:11,712 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-22 21:40:11,713 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)
[2023-12-22 21:40:11,715 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
[2023-12-22 21:40:11,960 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-22 21:40:11,970 INFO  L262         TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 25 conjunts are in the unsatisfiable core
[2023-12-22 21:40:11,975 INFO  L285         TraceCheckSpWp]: Computing forward predicates...