/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i


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


This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m
[2023-12-23 16:51:54,971 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2023-12-23 16:51:55,059 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 16:51:55,064 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2023-12-23 16:51:55,064 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2023-12-23 16:51:55,094 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2023-12-23 16:51:55,094 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-12-23 16:51:55,094 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-12-23 16:51:55,095 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2023-12-23 16:51:55,099 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2023-12-23 16:51:55,099 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-12-23 16:51:55,099 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-12-23 16:51:55,100 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-12-23 16:51:55,101 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2023-12-23 16:51:55,101 INFO  L153        SettingsManager]:  * Use SBE=true
[2023-12-23 16:51:55,102 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-12-23 16:51:55,102 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2023-12-23 16:51:55,102 INFO  L153        SettingsManager]:  * sizeof long=4
[2023-12-23 16:51:55,102 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2023-12-23 16:51:55,103 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2023-12-23 16:51:55,104 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2023-12-23 16:51:55,104 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-12-23 16:51:55,104 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2023-12-23 16:51:55,104 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2023-12-23 16:51:55,105 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2023-12-23 16:51:55,105 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2023-12-23 16:51:55,105 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2023-12-23 16:51:55,105 INFO  L153        SettingsManager]:  * sizeof long double=12
[2023-12-23 16:51:55,105 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2023-12-23 16:51:55,106 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2023-12-23 16:51:55,107 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-12-23 16:51:55,107 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2023-12-23 16:51:55,107 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2023-12-23 16:51:55,107 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2023-12-23 16:51:55,107 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 16:51:55,107 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-12-23 16:51:55,107 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2023-12-23 16:51:55,108 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2023-12-23 16:51:55,109 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2023-12-23 16:51:55,109 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2023-12-23 16:51:55,109 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2023-12-23 16:51:55,342 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2023-12-23 16:51:55,366 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-12-23 16:51:55,368 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-12-23 16:51:55,370 INFO  L270        PluginConnector]: Initializing CDTParser...
[2023-12-23 16:51:55,370 INFO  L274        PluginConnector]: CDTParser initialized
[2023-12-23 16:51:55,372 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i
[2023-12-23 16:51:56,456 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2023-12-23 16:51:56,709 INFO  L384              CDTParser]: Found 1 translation units.
[2023-12-23 16:51:56,709 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i
[2023-12-23 16:51:56,720 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ce14523/8779fd7011b84cb990bd02b9feb7a1af/FLAG74c14f527
[2023-12-23 16:51:56,735 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2ce14523/8779fd7011b84cb990bd02b9feb7a1af
[2023-12-23 16:51:56,738 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-12-23 16:51:56,739 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2023-12-23 16:51:56,741 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-12-23 16:51:56,741 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-12-23 16:51:56,746 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2023-12-23 16:51:56,746 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:51:56" (1/1) ...
[2023-12-23 16:51:56,747 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25dd566b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:56, skipping insertion in model container
[2023-12-23 16:51:56,747 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 04:51:56" (1/1) ...
[2023-12-23 16:51:56,787 INFO  L177         MainTranslator]: Built tables and reachable declarations
[2023-12-23 16:51:56,933 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i[919,932]
[2023-12-23 16:51:57,004 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 16:51:57,019 INFO  L202         MainTranslator]: Completed pre-run
[2023-12-23 16:51:57,029 WARN  L239   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i[919,932]
[2023-12-23 16:51:57,075 INFO  L209          PostProcessor]: Analyzing one entry point: main
[2023-12-23 16:51:57,092 INFO  L206         MainTranslator]: Completed translation
[2023-12-23 16:51:57,092 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57 WrapperNode
[2023-12-23 16:51:57,092 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-12-23 16:51:57,093 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-12-23 16:51:57,094 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-12-23 16:51:57,094 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2023-12-23 16:51:57,099 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,112 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,140 INFO  L138                Inliner]: procedures = 27, calls = 61, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 251
[2023-12-23 16:51:57,141 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-12-23 16:51:57,141 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-12-23 16:51:57,142 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2023-12-23 16:51:57,142 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2023-12-23 16:51:57,151 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,151 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,156 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,169 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 16:51:57,169 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,170 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,180 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,183 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,203 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,206 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,210 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-12-23 16:51:57,211 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-12-23 16:51:57,211 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2023-12-23 16:51:57,211 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2023-12-23 16:51:57,212 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (1/1) ...
[2023-12-23 16:51:57,217 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2023-12-23 16:51:57,226 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-12-23 16:51:57,245 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 16:51:57,258 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 16:51:57,277 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-12-23 16:51:57,277 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2023-12-23 16:51:57,277 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2023-12-23 16:51:57,279 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2023-12-23 16:51:57,279 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-12-23 16:51:57,280 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-12-23 16:51:57,398 INFO  L241             CfgBuilder]: Building ICFG
[2023-12-23 16:51:57,403 INFO  L267             CfgBuilder]: Building CFG for each procedure with an implementation
[2023-12-23 16:51:58,577 INFO  L282             CfgBuilder]: Performing block encoding
[2023-12-23 16:51:58,629 INFO  L304             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-12-23 16:51:58,629 INFO  L309             CfgBuilder]: Removed 1 assume(true) statements.
[2023-12-23 16:51:58,629 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:51:58 BoogieIcfgContainer
[2023-12-23 16:51:58,629 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-12-23 16:51:58,631 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-12-23 16:51:58,631 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2023-12-23 16:51:58,634 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2023-12-23 16:51:58,634 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 04:51:56" (1/3) ...
[2023-12-23 16:51:58,635 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3899518b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:51:58, skipping insertion in model container
[2023-12-23 16:51:58,635 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 04:51:57" (2/3) ...
[2023-12-23 16:51:58,635 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3899518b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 04:51:58, skipping insertion in model container
[2023-12-23 16:51:58,635 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 04:51:58" (3/3) ...
[2023-12-23 16:51:58,636 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodestructure_filler-ps-co_file-81.i
[2023-12-23 16:51:58,654 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-12-23 16:51:58,654 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2023-12-23 16:51:58,715 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-12-23 16:51:58,723 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;@1439a718, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2023-12-23 16:51:58,723 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2023-12-23 16:51:58,729 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 109 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 16:51:58,760 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 287
[2023-12-23 16:51:58,761 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:51:58,762 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:58,763 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:51:58,769 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:51:58,769 INFO  L85        PathProgramCache]: Analyzing trace with hash -476771090, now seen corresponding path program 1 times
[2023-12-23 16:51:58,786 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:51:58,787 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [929679342]
[2023-12-23 16:51:58,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:51:58,789 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 16:51:58,790 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:51:58,791 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 16:51:58,793 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 16:51:59,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:51:59,194 INFO  L262         TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-12-23 16:51:59,206 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:51:59,266 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked.
[2023-12-23 16:51:59,266 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 16:51:59,267 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 16:51:59,267 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [929679342]
[2023-12-23 16:51:59,267 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [929679342] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 16:51:59,267 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 16:51:59,267 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 16:51:59,272 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29124384]
[2023-12-23 16:51:59,273 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 16:51:59,277 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-12-23 16:51:59,277 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 16:51:59,304 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-12-23 16:51:59,305 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-12-23 16:51:59,307 INFO  L87              Difference]: Start difference. First operand  has 109 states, 58 states have (on average 1.4137931034482758) internal successors, (82), 59 states have internal predecessors, (82), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand  has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:51:59,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 16:51:59,402 INFO  L93              Difference]: Finished difference Result 215 states and 402 transitions.
[2023-12-23 16:51:59,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2023-12-23 16:51:59,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48) Word has length 286
[2023-12-23 16:51:59,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 16:51:59,418 INFO  L225             Difference]: With dead ends: 215
[2023-12-23 16:51:59,418 INFO  L226             Difference]: Without dead ends: 107
[2023-12-23 16:51:59,428 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 285 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 16:51:59,431 INFO  L413           NwaCegarLoop]: 170 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2023-12-23 16:51:59,432 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 170 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2023-12-23 16:51:59,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2023-12-23 16:51:59,472 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107.
[2023-12-23 16:51:59,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 107 states, 57 states have (on average 1.3508771929824561) internal successors, (77), 57 states have internal predecessors, (77), 48 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48)
[2023-12-23 16:51:59,475 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 173 transitions.
[2023-12-23 16:51:59,476 INFO  L78                 Accepts]: Start accepts. Automaton has 107 states and 173 transitions. Word has length 286
[2023-12-23 16:51:59,476 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 16:51:59,477 INFO  L495      AbstractCegarLoop]: Abstraction has 107 states and 173 transitions.
[2023-12-23 16:51:59,477 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 1 states have call successors, (48), 1 states have call predecessors, (48), 2 states have return successors, (48), 2 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:51:59,477 INFO  L276                IsEmpty]: Start isEmpty. Operand 107 states and 173 transitions.
[2023-12-23 16:51:59,482 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 287
[2023-12-23 16:51:59,482 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:51:59,482 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:51:59,499 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 16:51:59,694 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 16:51:59,695 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:51:59,696 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:51:59,696 INFO  L85        PathProgramCache]: Analyzing trace with hash 1065777126, now seen corresponding path program 1 times
[2023-12-23 16:51:59,697 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:51:59,698 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533652909]
[2023-12-23 16:51:59,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:51:59,698 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 16:51:59,698 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:51:59,700 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 16:51:59,701 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 16:51:59,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:51:59,990 INFO  L262         TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-12-23 16:52:00,000 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:52:01,344 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked.
[2023-12-23 16:52:01,344 INFO  L323         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-12-23 16:52:01,345 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 16:52:01,345 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533652909]
[2023-12-23 16:52:01,345 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533652909] provided 1 perfect and 0 imperfect interpolant sequences
[2023-12-23 16:52:01,345 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-12-23 16:52:01,345 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-12-23 16:52:01,346 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290024747]
[2023-12-23 16:52:01,346 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 16:52:01,347 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-12-23 16:52:01,347 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 16:52:01,348 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-12-23 16:52:01,349 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 16:52:01,349 INFO  L87              Difference]: Start difference. First operand 107 states and 173 transitions. Second operand  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:52:01,466 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 16:52:01,466 INFO  L93              Difference]: Finished difference Result 307 states and 500 transitions.
[2023-12-23 16:52:01,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2023-12-23 16:52:01,467 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 286
[2023-12-23 16:52:01,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 16:52:01,471 INFO  L225             Difference]: With dead ends: 307
[2023-12-23 16:52:01,471 INFO  L226             Difference]: Without dead ends: 201
[2023-12-23 16:52:01,472 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-12-23 16:52:01,473 INFO  L413           NwaCegarLoop]: 165 mSDtfsCounter, 23 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 16:52:01,474 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 326 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 16:52:01,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 201 states.
[2023-12-23 16:52:01,505 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 191.
[2023-12-23 16:52:01,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 191 states, 92 states have (on average 1.2608695652173914) internal successors, (116), 92 states have internal predecessors, (116), 96 states have call successors, (96), 2 states have call predecessors, (96), 2 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96)
[2023-12-23 16:52:01,508 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 308 transitions.
[2023-12-23 16:52:01,508 INFO  L78                 Accepts]: Start accepts. Automaton has 191 states and 308 transitions. Word has length 286
[2023-12-23 16:52:01,509 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 16:52:01,510 INFO  L495      AbstractCegarLoop]: Abstraction has 191 states and 308 transitions.
[2023-12-23 16:52:01,511 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 2 states have internal predecessors, (49), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:52:01,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 191 states and 308 transitions.
[2023-12-23 16:52:01,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2023-12-23 16:52:01,517 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:52:01,517 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:01,530 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 16:52:01,729 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 16:52:01,730 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:52:01,731 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:52:01,731 INFO  L85        PathProgramCache]: Analyzing trace with hash -1991074596, now seen corresponding path program 1 times
[2023-12-23 16:52:01,732 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:52:01,732 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1890143842]
[2023-12-23 16:52:01,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:52:01,732 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 16:52:01,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:52:01,734 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 16:52:01,739 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 16:52:02,144 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:52:02,164 INFO  L262         TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-12-23 16:52:02,173 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:52:03,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 47 proven. 141 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked.
[2023-12-23 16:52:03,367 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 16:52:03,870 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 4371 trivial. 0 not checked.
[2023-12-23 16:52:03,871 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 16:52:03,871 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1890143842]
[2023-12-23 16:52:03,871 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1890143842] provided 0 perfect and 2 imperfect interpolant sequences
[2023-12-23 16:52:03,871 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 16:52:03,871 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 14
[2023-12-23 16:52:03,872 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571112895]
[2023-12-23 16:52:03,872 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 16:52:03,873 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2023-12-23 16:52:03,873 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 16:52:03,874 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2023-12-23 16:52:03,875 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182
[2023-12-23 16:52:03,875 INFO  L87              Difference]: Start difference. First operand 191 states and 308 transitions. Second operand  has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96)
[2023-12-23 16:52:06,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 16:52:06,884 INFO  L93              Difference]: Finished difference Result 438 states and 696 transitions.
[2023-12-23 16:52:06,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. 
[2023-12-23 16:52:06,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96) Word has length 287
[2023-12-23 16:52:06,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 16:52:06,889 INFO  L225             Difference]: With dead ends: 438
[2023-12-23 16:52:06,889 INFO  L226             Difference]: Without dead ends: 332
[2023-12-23 16:52:06,890 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 590 GetRequests, 562 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=241, Invalid=629, Unknown=0, NotChecked=0, Total=870
[2023-12-23 16:52:06,891 INFO  L413           NwaCegarLoop]: 247 mSDtfsCounter, 462 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 1327 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 937 SdHoareTripleChecker+Invalid, 1581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 1327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time
[2023-12-23 16:52:06,892 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [463 Valid, 937 Invalid, 1581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 1327 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time]
[2023-12-23 16:52:06,893 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 332 states.
[2023-12-23 16:52:06,946 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 199.
[2023-12-23 16:52:06,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 199 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 98 states have internal predecessors, (121), 96 states have call successors, (96), 4 states have call predecessors, (96), 4 states have return successors, (96), 96 states have call predecessors, (96), 96 states have call successors, (96)
[2023-12-23 16:52:06,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions.
[2023-12-23 16:52:06,949 INFO  L78                 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 287
[2023-12-23 16:52:06,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 16:52:06,950 INFO  L495      AbstractCegarLoop]: Abstraction has 199 states and 313 transitions.
[2023-12-23 16:52:06,950 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 4 states have call successors, (96), 3 states have call predecessors, (96), 4 states have return successors, (96), 2 states have call predecessors, (96), 4 states have call successors, (96)
[2023-12-23 16:52:06,950 INFO  L276                IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions.
[2023-12-23 16:52:06,953 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2023-12-23 16:52:06,953 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:52:06,953 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:06,972 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 16:52:07,172 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 16:52:07,173 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:52:07,173 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:52:07,173 INFO  L85        PathProgramCache]: Analyzing trace with hash 1910865690, now seen corresponding path program 1 times
[2023-12-23 16:52:07,174 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:52:07,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1427576016]
[2023-12-23 16:52:07,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:52:07,175 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 16:52:07,175 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:52:07,176 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 16:52:07,208 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 16:52:07,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:52:07,491 INFO  L262         TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 16:52:07,499 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:52:07,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 897 proven. 126 refuted. 0 times theorem prover too weak. 3489 trivial. 0 not checked.
[2023-12-23 16:52:07,846 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 16:52:08,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4512 trivial. 0 not checked.
[2023-12-23 16:52:08,013 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 16:52:08,013 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1427576016]
[2023-12-23 16:52:08,013 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1427576016] provided 1 perfect and 1 imperfect interpolant sequences
[2023-12-23 16:52:08,013 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-12-23 16:52:08,013 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9
[2023-12-23 16:52:08,014 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710225671]
[2023-12-23 16:52:08,014 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-12-23 16:52:08,014 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-12-23 16:52:08,014 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 16:52:08,015 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-12-23 16:52:08,015 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 16:52:08,016 INFO  L87              Difference]: Start difference. First operand 199 states and 313 transitions. Second operand  has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:52:08,182 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 16:52:08,182 INFO  L93              Difference]: Finished difference Result 337 states and 522 transitions.
[2023-12-23 16:52:08,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2023-12-23 16:52:08,183 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48) Word has length 287
[2023-12-23 16:52:08,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 16:52:08,186 INFO  L225             Difference]: With dead ends: 337
[2023-12-23 16:52:08,187 INFO  L226             Difference]: Without dead ends: 227
[2023-12-23 16:52:08,190 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 572 GetRequests, 565 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72
[2023-12-23 16:52:08,192 INFO  L413           NwaCegarLoop]: 176 mSDtfsCounter, 58 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2023-12-23 16:52:08,193 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 334 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2023-12-23 16:52:08,195 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 227 states.
[2023-12-23 16:52:08,235 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 224.
[2023-12-23 16:52:08,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 224 states, 117 states have (on average 1.2307692307692308) internal successors, (144), 118 states have internal predecessors, (144), 100 states have call successors, (100), 6 states have call predecessors, (100), 6 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100)
[2023-12-23 16:52:08,238 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 344 transitions.
[2023-12-23 16:52:08,238 INFO  L78                 Accepts]: Start accepts. Automaton has 224 states and 344 transitions. Word has length 287
[2023-12-23 16:52:08,238 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 16:52:08,239 INFO  L495      AbstractCegarLoop]: Abstraction has 224 states and 344 transitions.
[2023-12-23 16:52:08,239 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 1 states have call successors, (48), 1 states have call predecessors, (48), 1 states have return successors, (48), 1 states have call predecessors, (48), 1 states have call successors, (48)
[2023-12-23 16:52:08,239 INFO  L276                IsEmpty]: Start isEmpty. Operand 224 states and 344 transitions.
[2023-12-23 16:52:08,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 288
[2023-12-23 16:52:08,242 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:52:08,242 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:08,259 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 16:52:08,459 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 16:52:08,460 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:52:08,460 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:52:08,460 INFO  L85        PathProgramCache]: Analyzing trace with hash 1853607388, now seen corresponding path program 1 times
[2023-12-23 16:52:08,461 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:52:08,461 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1032939925]
[2023-12-23 16:52:08,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:52:08,462 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 16:52:08,462 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:52:08,463 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 16:52:08,466 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 16:52:08,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:52:08,787 INFO  L262         TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-12-23 16:52:08,793 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:52:09,159 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked.
[2023-12-23 16:52:09,159 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 16:52:09,278 INFO  L136   FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-12-23 16:52:09,278 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1032939925]
[2023-12-23 16:52:09,280 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleMathsat [1032939925] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 16:52:09,280 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [19439847]
[2023-12-23 16:52:09,280 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:52:09,280 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2023-12-23 16:52:09,281 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2023-12-23 16:52:09,320 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 16:52:09,329 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 16:52:10,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:52:10,078 INFO  L262         TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 6 conjunts are in the unsatisfiable core
[2023-12-23 16:52:10,084 INFO  L285         TraceCheckSpWp]: Computing forward predicates...
[2023-12-23 16:52:10,387 INFO  L134       CoverageAnalysis]: Checked inductivity of 4512 backedges. 1311 proven. 117 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked.
[2023-12-23 16:52:10,387 INFO  L327         TraceCheckSpWp]: Computing backward predicates...
[2023-12-23 16:52:10,479 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleCvc4 [19439847] provided 0 perfect and 1 imperfect interpolant sequences
[2023-12-23 16:52:10,480 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-12-23 16:52:10,480 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2023-12-23 16:52:10,480 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119859142]
[2023-12-23 16:52:10,480 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-12-23 16:52:10,481 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-12-23 16:52:10,481 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-12-23 16:52:10,482 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-12-23 16:52:10,482 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2023-12-23 16:52:10,482 INFO  L87              Difference]: Start difference. First operand 224 states and 344 transitions. Second operand  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48)
[2023-12-23 16:52:11,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2023-12-23 16:52:11,474 INFO  L93              Difference]: Finished difference Result 394 states and 595 transitions.
[2023-12-23 16:52:11,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2023-12-23 16:52:11,474 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 287
[2023-12-23 16:52:11,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2023-12-23 16:52:11,480 INFO  L225             Difference]: With dead ends: 394
[2023-12-23 16:52:11,480 INFO  L226             Difference]: Without dead ends: 259
[2023-12-23 16:52:11,481 INFO  L412           NwaCegarLoop]: 0 DeclaredPredicates, 627 GetRequests, 611 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306
[2023-12-23 16:52:11,482 INFO  L413           NwaCegarLoop]: 223 mSDtfsCounter, 124 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2023-12-23 16:52:11,482 INFO  L414           NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 579 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 564 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2023-12-23 16:52:11,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 259 states.
[2023-12-23 16:52:11,512 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 232.
[2023-12-23 16:52:11,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 232 states, 123 states have (on average 1.2032520325203253) internal successors, (148), 124 states have internal predecessors, (148), 100 states have call successors, (100), 8 states have call predecessors, (100), 8 states have return successors, (100), 99 states have call predecessors, (100), 100 states have call successors, (100)
[2023-12-23 16:52:11,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 348 transitions.
[2023-12-23 16:52:11,515 INFO  L78                 Accepts]: Start accepts. Automaton has 232 states and 348 transitions. Word has length 287
[2023-12-23 16:52:11,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2023-12-23 16:52:11,516 INFO  L495      AbstractCegarLoop]: Abstraction has 232 states and 348 transitions.
[2023-12-23 16:52:11,516 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 2 states have call successors, (48), 2 states have call predecessors, (48), 3 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48)
[2023-12-23 16:52:11,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 232 states and 348 transitions.
[2023-12-23 16:52:11,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 289
[2023-12-23 16:52:11,519 INFO  L187           NwaCegarLoop]: Found error trace
[2023-12-23 16:52:11,520 INFO  L195           NwaCegarLoop]: trace histogram [48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:52:11,531 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 16:52:11,739 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0
[2023-12-23 16:52:11,929 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 16:52:11,929 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2023-12-23 16:52:11,930 INFO  L160       PredicateUnifier]: Initialized classic predicate unifier
[2023-12-23 16:52:11,930 INFO  L85        PathProgramCache]: Analyzing trace with hash 1625433236, now seen corresponding path program 1 times
[2023-12-23 16:52:11,931 INFO  L118   FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-12-23 16:52:11,931 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1263982061]
[2023-12-23 16:52:11,931 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-12-23 16:52:11,931 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 16:52:11,931 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-12-23 16:52:11,932 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 16:52:11,933 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 16:52:12,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-12-23 16:52:12,565 INFO  L262         TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 34 conjunts are in the unsatisfiable core
[2023-12-23 16:52:12,573 INFO  L285         TraceCheckSpWp]: Computing forward predicates...