/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-pe-ci_file-34.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 07:13:43,569 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 07:13:43,622 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 07:13:43,626 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 07:13:43,626 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 07:13:43,645 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 07:13:43,645 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 07:13:43,645 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 07:13:43,646 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 07:13:43,646 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 07:13:43,647 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 07:13:43,647 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 07:13:43,647 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 07:13:43,648 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 07:13:43,648 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 07:13:43,649 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 07:13:43,649 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 07:13:43,649 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 07:13:43,649 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 07:13:43,650 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 07:13:43,650 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 07:13:43,651 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 07:13:43,651 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 07:13:43,651 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 07:13:43,651 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 07:13:43,652 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 07:13:43,652 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 07:13:43,652 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 07:13:43,653 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 07:13:43,653 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 07:13:43,653 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 07:13:43,654 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 07:13:43,654 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 07:13:43,654 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 07:13:43,655 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:13:43,655 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 07:13:43,655 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 07:13:43,656 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 07:13:43,656 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 07:13:43,656 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 07:13:43,657 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 07:13:43,664 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 07:13:43,665 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 07:13:43,665 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 07:13:43,665 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 07:13:43,665 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 07:13:43,665 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 07:13:43,884 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 07:13:43,909 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 07:13:43,911 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 07:13:43,912 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 07:13:43,912 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 07:13:43,914 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i
[2023-12-23 07:13:45,121 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 07:13:45,346 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 07:13:45,347 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i
[2023-12-23 07:13:45,356 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5398474e/6fb024b9c75d4751a0db44d570e5429a/FLAG218ce96f2
[2023-12-23 07:13:45,369 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5398474e/6fb024b9c75d4751a0db44d570e5429a
[2023-12-23 07:13:45,372 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 07:13:45,373 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 07:13:45,375 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 07:13:45,375 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 07:13:45,379 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 07:13:45,380 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,381 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28901a5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45, skipping insertion in model container
[2023-12-23 07:13:45,381 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,422 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 07:13:45,565 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-pe-ci_file-34.i[919,932]
[2023-12-23 07:13:45,631 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:13:45,647 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 07:13:45,657 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-pe-ci_file-34.i[919,932]
[2023-12-23 07:13:45,692 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 07:13:45,710 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 07:13:45,710 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45 WrapperNode
[2023-12-23 07:13:45,710 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 07:13:45,711 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 07:13:45,711 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 07:13:45,711 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 07:13:45,718 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,729 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,762 INFO  L138                Inliner]: procedures = 27, calls = 33, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 177
[2023-12-23 07:13:45,763 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 07:13:45,763 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 07:13:45,765 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 07:13:45,765 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 07:13:45,774 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,775 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,780 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,796 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 07:13:45,799 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,800 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,810 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,814 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,832 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,835 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,838 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 07:13:45,839 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 07:13:45,839 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 07:13:45,840 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 07:13:45,840 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (1/1) ...
[2023-12-23 07:13:45,856 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 07:13:45,867 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 07:13:45,882 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 07:13:45,906 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 07:13:45,914 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 07:13:45,914 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 07:13:45,915 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 07:13:45,916 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 07:13:45,916 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 07:13:45,917 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 07:13:45,994 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 07:13:45,996 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 07:13:46,720 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 07:13:46,775 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 07:13:46,776 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 07:13:46,776 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:13:46 BoogieIcfgContainer
[2023-12-23 07:13:46,776 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 07:13:46,778 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 07:13:46,779 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 07:13:46,786 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 07:13:46,787 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 07:13:45" (1/3) ...
[2023-12-23 07:13:46,788 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453c6eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:13:46, skipping insertion in model container
[2023-12-23 07:13:46,788 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 07:13:45" (2/3) ...
[2023-12-23 07:13:46,789 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453c6eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 07:13:46, skipping insertion in model container
[2023-12-23 07:13:46,789 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 07:13:46" (3/3) ...
[2023-12-23 07:13:46,790 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-pe-ci_file-34.i
[2023-12-23 07:13:46,807 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 07:13:46,808 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 07:13:46,846 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 07:13:46,852 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;@5baceb12, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 07:13:46,853 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 07:13:46,856 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-23 07:13:46,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-23 07:13:46,868 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:46,869 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:46,869 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:46,873 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:46,874 INFO  L85        PathProgramCache]: Analyzing trace with hash 590184304, now seen corresponding path program 1 times
[2023-12-23 07:13:46,888 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:46,889 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406186861]
[2023-12-23 07:13:46,889 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:46,889 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 07:13:46,890 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:46,894 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 07:13:46,900 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 07:13:47,251 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:47,271 INFO  L262         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 07:13:47,280 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:47,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 278 proven. 0 refuted. 0 times theorem prover too weak. 482 trivial. 0 not checked.
[2023-12-23 07:13:47,341 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:13:47,342 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:13:47,342 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406186861]
[2023-12-23 07:13:47,343 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406186861] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:13:47,343 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:13:47,343 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 07:13:47,345 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627098284]
[2023-12-23 07:13:47,345 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:13:47,351 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 07:13:47,352 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:13:47,384 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 07:13:47,385 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 07:13:47,387 INFO  L87              Difference]: Start difference. First operand  has 68 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 46 states have internal predecessors, (70), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-23 07:13:47,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:13:47,488 INFO  L93              Difference]: Finished difference Result 133 states and 238 transitions.
[2023-12-23 07:13:47,497 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 07:13:47,499 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 133
[2023-12-23 07:13:47,500 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:13:47,507 INFO  L225             Difference]: With dead ends: 133
[2023-12-23 07:13:47,507 INFO  L226             Difference]: Without dead ends: 66
[2023-12-23 07:13:47,513 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 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 07:13:47,518 INFO  L413           NwaCegarLoop]: 102 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 07:13:47,521 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 07:13:47,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2023-12-23 07:13:47,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2023-12-23 07:13:47,558 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 66 states, 44 states have (on average 1.4772727272727273) internal successors, (65), 44 states have internal predecessors, (65), 20 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20)
[2023-12-23 07:13:47,560 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 105 transitions.
[2023-12-23 07:13:47,562 INFO  L78                 Accepts]: Start accepts. Automaton has 66 states and 105 transitions. Word has length 133
[2023-12-23 07:13:47,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:13:47,562 INFO  L495      AbstractCegarLoop]: Abstraction has 66 states and 105 transitions.
[2023-12-23 07:13:47,563 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20)
[2023-12-23 07:13:47,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 66 states and 105 transitions.
[2023-12-23 07:13:47,566 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2023-12-23 07:13:47,566 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:47,566 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:47,588 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-12-23 07:13:47,787 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 07:13:47,788 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:47,788 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:47,789 INFO  L85        PathProgramCache]: Analyzing trace with hash -2122515028, now seen corresponding path program 1 times
[2023-12-23 07:13:47,790 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:47,790 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031925328]
[2023-12-23 07:13:47,790 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:47,790 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 07:13:47,791 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:47,792 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 07:13:47,794 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 07:13:48,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:48,063 INFO  L262         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 07:13:48,068 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:48,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 07:13:48,353 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:13:48,353 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:13:48,355 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031925328]
[2023-12-23 07:13:48,355 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031925328] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:13:48,355 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:13:48,355 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-12-23 07:13:48,356 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55105221]
[2023-12-23 07:13:48,356 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:13:48,357 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 07:13:48,358 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:13:48,359 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 07:13:48,359 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2023-12-23 07:13:48,360 INFO  L87              Difference]: Start difference. First operand 66 states and 105 transitions. Second operand  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:48,656 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:13:48,656 INFO  L93              Difference]: Finished difference Result 224 states and 359 transitions.
[2023-12-23 07:13:48,664 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 07:13:48,665 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 133
[2023-12-23 07:13:48,666 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:13:48,667 INFO  L225             Difference]: With dead ends: 224
[2023-12-23 07:13:48,667 INFO  L226             Difference]: Without dead ends: 159
[2023-12-23 07:13:48,668 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2023-12-23 07:13:48,669 INFO  L413           NwaCegarLoop]: 141 mSDtfsCounter, 106 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2023-12-23 07:13:48,670 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 339 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2023-12-23 07:13:48,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 159 states.
[2023-12-23 07:13:48,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 131.
[2023-12-23 07:13:48,711 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 131 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 88 states have internal predecessors, (129), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40)
[2023-12-23 07:13:48,713 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 209 transitions.
[2023-12-23 07:13:48,714 INFO  L78                 Accepts]: Start accepts. Automaton has 131 states and 209 transitions. Word has length 133
[2023-12-23 07:13:48,714 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:13:48,714 INFO  L495      AbstractCegarLoop]: Abstraction has 131 states and 209 transitions.
[2023-12-23 07:13:48,715 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:48,715 INFO  L276                IsEmpty]: Start isEmpty. Operand 131 states and 209 transitions.
[2023-12-23 07:13:48,717 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2023-12-23 07:13:48,717 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:48,717 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:48,730 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 07:13:48,929 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 07:13:48,930 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:48,930 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:48,930 INFO  L85        PathProgramCache]: Analyzing trace with hash 1840467239, now seen corresponding path program 1 times
[2023-12-23 07:13:48,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:48,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1947262397]
[2023-12-23 07:13:48,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:48,931 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 07:13:48,932 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:48,933 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 07:13:48,935 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 07:13:49,178 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:49,197 INFO  L262         TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 07:13:49,202 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:49,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 07:13:49,822 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:13:49,822 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:13:49,823 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1947262397]
[2023-12-23 07:13:49,823 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1947262397] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:13:49,823 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:13:49,823 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-23 07:13:49,823 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691721335]
[2023-12-23 07:13:49,824 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:13:49,824 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 07:13:49,824 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:13:49,825 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 07:13:49,825 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2023-12-23 07:13:49,825 INFO  L87              Difference]: Start difference. First operand 131 states and 209 transitions. Second operand  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:50,623 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:13:50,623 INFO  L93              Difference]: Finished difference Result 437 states and 695 transitions.
[2023-12-23 07:13:50,624 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2023-12-23 07:13:50,624 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 134
[2023-12-23 07:13:50,625 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:13:50,627 INFO  L225             Difference]: With dead ends: 437
[2023-12-23 07:13:50,627 INFO  L226             Difference]: Without dead ends: 307
[2023-12-23 07:13:50,629 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56
[2023-12-23 07:13:50,629 INFO  L413           NwaCegarLoop]: 179 mSDtfsCounter, 123 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2023-12-23 07:13:50,630 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 533 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2023-12-23 07:13:50,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 307 states.
[2023-12-23 07:13:50,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 255.
[2023-12-23 07:13:50,660 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 255 states, 170 states have (on average 1.4470588235294117) internal successors, (246), 170 states have internal predecessors, (246), 80 states have call successors, (80), 4 states have call predecessors, (80), 4 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80)
[2023-12-23 07:13:50,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 406 transitions.
[2023-12-23 07:13:50,663 INFO  L78                 Accepts]: Start accepts. Automaton has 255 states and 406 transitions. Word has length 134
[2023-12-23 07:13:50,663 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:13:50,664 INFO  L495      AbstractCegarLoop]: Abstraction has 255 states and 406 transitions.
[2023-12-23 07:13:50,664 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 5 states have internal predecessors, (37), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:50,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 255 states and 406 transitions.
[2023-12-23 07:13:50,666 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-23 07:13:50,666 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:50,667 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:50,683 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 07:13:50,878 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:13:50,878 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:50,879 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:50,879 INFO  L85        PathProgramCache]: Analyzing trace with hash -123835675, now seen corresponding path program 1 times
[2023-12-23 07:13:50,879 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:50,880 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1696032449]
[2023-12-23 07:13:50,880 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:50,880 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 07:13:50,880 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:50,881 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-12-23 07:13:50,891 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-12-23 07:13:51,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:51,127 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-23 07:13:51,131 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:51,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 07:13:51,590 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:13:51,591 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:13:51,591 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1696032449]
[2023-12-23 07:13:51,592 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1696032449] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:13:51,592 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 07:13:51,593 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2023-12-23 07:13:51,593 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982601083]
[2023-12-23 07:13:51,593 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:13:51,594 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 07:13:51,595 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:13:51,596 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 07:13:51,596 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2023-12-23 07:13:51,597 INFO  L87              Difference]: Start difference. First operand 255 states and 406 transitions. Second operand  has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:52,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:13:52,287 INFO  L93              Difference]: Finished difference Result 855 states and 1369 transitions.
[2023-12-23 07:13:52,288 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2023-12-23 07:13:52,289 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135
[2023-12-23 07:13:52,289 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:13:52,296 INFO  L225             Difference]: With dead ends: 855
[2023-12-23 07:13:52,298 INFO  L226             Difference]: Without dead ends: 725
[2023-12-23 07:13:52,302 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110
[2023-12-23 07:13:52,303 INFO  L413           NwaCegarLoop]: 151 mSDtfsCounter, 308 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 308 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2023-12-23 07:13:52,303 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [308 Valid, 567 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2023-12-23 07:13:52,306 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 725 states.
[2023-12-23 07:13:52,400 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 551.
[2023-12-23 07:13:52,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 551 states, 361 states have (on average 1.4293628808864265) internal successors, (516), 361 states have internal predecessors, (516), 180 states have call successors, (180), 9 states have call predecessors, (180), 9 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180)
[2023-12-23 07:13:52,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 876 transitions.
[2023-12-23 07:13:52,407 INFO  L78                 Accepts]: Start accepts. Automaton has 551 states and 876 transitions. Word has length 135
[2023-12-23 07:13:52,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:13:52,409 INFO  L495      AbstractCegarLoop]: Abstraction has 551 states and 876 transitions.
[2023-12-23 07:13:52,409 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 5 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:52,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 551 states and 876 transitions.
[2023-12-23 07:13:52,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-23 07:13:52,412 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:52,413 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:52,427 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-12-23 07:13:52,627 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-12-23 07:13:52,627 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:52,628 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:52,628 INFO  L85        PathProgramCache]: Analyzing trace with hash 216784052, now seen corresponding path program 1 times
[2023-12-23 07:13:52,629 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:52,629 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [518999373]
[2023-12-23 07:13:52,629 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:52,629 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 07:13:52,629 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:52,630 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 07:13:52,642 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 07:13:52,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:52,883 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 7 conjunts are in the unsatisfiable core
[2023-12-23 07:13:52,887 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:53,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 387 proven. 33 refuted. 0 times theorem prover too weak. 340 trivial. 0 not checked.
[2023-12-23 07:13:53,254 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 07:13:53,418 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 07:13:53,418 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [518999373]
[2023-12-23 07:13:53,418 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [518999373] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 07:13:53,418 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [736100419]
[2023-12-23 07:13:53,419 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:53,419 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 07:13:53,419 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 07:13:53,454 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 07:13:53,469 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 07:13:54,104 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:54,111 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core
[2023-12-23 07:13:54,114 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 07:13:54,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 760 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked.
[2023-12-23 07:13:54,983 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 07:13:54,983 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [736100419] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 07:13:54,983 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 07:13:54,983 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12
[2023-12-23 07:13:54,984 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664097880]
[2023-12-23 07:13:54,984 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 07:13:54,984 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-12-23 07:13:54,984 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 07:13:54,985 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-12-23 07:13:54,985 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2023-12-23 07:13:54,985 INFO  L87              Difference]: Start difference. First operand 551 states and 876 transitions. Second operand  has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:56,508 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 07:13:56,509 INFO  L93              Difference]: Finished difference Result 1259 states and 2004 transitions.
[2023-12-23 07:13:56,516 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2023-12-23 07:13:56,517 INFO  L78                 Accepts]: Start accepts. Automaton has  has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20) Word has length 135
[2023-12-23 07:13:56,518 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 07:13:56,522 INFO  L225             Difference]: With dead ends: 1259
[2023-12-23 07:13:56,524 INFO  L226             Difference]: Without dead ends: 753
[2023-12-23 07:13:56,526 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=359, Unknown=0, NotChecked=0, Total=462
[2023-12-23 07:13:56,527 INFO  L413           NwaCegarLoop]: 94 mSDtfsCounter, 272 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time
[2023-12-23 07:13:56,527 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 397 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time]
[2023-12-23 07:13:56,529 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 753 states.
[2023-12-23 07:13:56,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 619.
[2023-12-23 07:13:56,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 619 states, 413 states have (on average 1.4334140435835352) internal successors, (592), 415 states have internal predecessors, (592), 194 states have call successors, (194), 11 states have call predecessors, (194), 11 states have return successors, (194), 192 states have call predecessors, (194), 194 states have call successors, (194)
[2023-12-23 07:13:56,600 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 619 states to 619 states and 980 transitions.
[2023-12-23 07:13:56,601 INFO  L78                 Accepts]: Start accepts. Automaton has 619 states and 980 transitions. Word has length 135
[2023-12-23 07:13:56,601 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 07:13:56,601 INFO  L495      AbstractCegarLoop]: Abstraction has 619 states and 980 transitions.
[2023-12-23 07:13:56,602 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (20), 1 states have call predecessors, (20), 1 states have return successors, (20), 1 states have call predecessors, (20), 1 states have call successors, (20)
[2023-12-23 07:13:56,602 INFO  L276                IsEmpty]: Start isEmpty. Operand 619 states and 980 transitions.
[2023-12-23 07:13:56,603 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2023-12-23 07:13:56,603 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 07:13:56,603 INFO  L195           NwaCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:56,614 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 07:13:56,828 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-12-23 07:13:57,024 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 07:13:57,025 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 07:13:57,025 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 07:13:57,025 INFO  L85        PathProgramCache]: Analyzing trace with hash 1026130678, now seen corresponding path program 1 times
[2023-12-23 07:13:57,026 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 07:13:57,026 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1921511087]
[2023-12-23 07:13:57,026 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 07:13:57,026 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 07:13:57,027 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 07:13:57,028 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 07:13:57,030 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 07:13:57,323 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 07:13:57,338 INFO  L262         TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 32 conjunts are in the unsatisfiable core
[2023-12-23 07:13:57,344 INFO  L285         TraceCheckSpWp]: Computing forward predicates...