/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:48:59,622 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:48:59,692 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-11-03 01:48:59,699 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:48:59,701 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:48:59,731 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:48:59,732 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:48:59,734 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:48:59,734 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:48:59,735 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:48:59,735 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:48:59,736 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:48:59,737 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:48:59,738 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:48:59,738 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:48:59,739 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:48:59,739 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:48:59,742 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:48:59,742 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:48:59,742 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:48:59,742 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:48:59,743 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:48:59,743 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:48:59,743 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:48:59,744 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:48:59,744 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:48:59,744 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:48:59,744 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:48:59,745 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:48:59,745 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:48:59,745 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:48:59,745 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:48:59,746 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:48:59,746 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:48:59,750 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:48:59,751 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:48:59,751 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:48:59,751 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:48:59,751 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:48:59,752 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:48:59,752 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:48:59,754 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:48:59,754 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:48:59,754 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:48:59,754 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:48:59,962 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:48:59,992 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:48:59,995 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:48:59,996 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:48:59,996 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:48:59,997 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i
[2024-11-03 01:49:01,418 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:49:01,683 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:49:01,686 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount500_file-98.i
[2024-11-03 01:49:01,703 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f815c47/d875f4b424464b2280378ef72bf2cb31/FLAGfcb6f2bb5
[2024-11-03 01:49:01,718 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5f815c47/d875f4b424464b2280378ef72bf2cb31
[2024-11-03 01:49:01,721 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:49:01,722 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:49:01,723 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:49:01,723 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:49:01,729 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:49:01,730 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:01" (1/1) ...
[2024-11-03 01:49:01,731 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b161a66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:01, skipping insertion in model container
[2024-11-03 01:49:01,731 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:49:01" (1/1) ...
[2024-11-03 01:49:01,783 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:49:01,959 WARN  L250   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_operatoramount_amount500_file-98.i[916,929]
[2024-11-03 01:49:02,211 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:49:02,241 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:49:02,255 WARN  L250   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_operatoramount_amount500_file-98.i[916,929]
[2024-11-03 01:49:02,367 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:49:02,393 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:49:02,397 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02 WrapperNode
[2024-11-03 01:49:02,397 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:49:02,398 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:49:02,398 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:49:02,398 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:49:02,403 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,433 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,513 INFO  L138                Inliner]: procedures = 27, calls = 71, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 532
[2024-11-03 01:49:02,514 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:49:02,514 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:49:02,515 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:49:02,515 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:49:02,525 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,525 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,534 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,579 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].
[2024-11-03 01:49:02,579 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,580 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,622 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,628 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,636 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,641 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,655 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:49:02,660 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:49:02,660 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:49:02,660 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:49:02,661 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (1/1) ...
[2024-11-03 01:49:02,667 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:49:02,678 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:49:02,695 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)
[2024-11-03 01:49:02,704 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
[2024-11-03 01:49:02,723 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:49:02,723 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:49:02,724 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:49:02,724 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:49:02,724 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:49:02,724 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:49:02,837 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:49:02,839 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:49:29,690 INFO  L?                        ?]: Removed 81 outVars from TransFormulas that were not future-live.
[2024-11-03 01:49:29,690 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:49:29,713 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:49:29,714 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:49:29,715 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:29 BoogieIcfgContainer
[2024-11-03 01:49:29,716 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:49:29,719 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:49:29,719 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:49:29,722 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:49:29,723 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:49:01" (1/3) ...
[2024-11-03 01:49:29,724 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142d2b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:29, skipping insertion in model container
[2024-11-03 01:49:29,724 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:49:02" (2/3) ...
[2024-11-03 01:49:29,724 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142d2b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:49:29, skipping insertion in model container
[2024-11-03 01:49:29,724 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:49:29" (3/3) ...
[2024-11-03 01:49:29,725 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-98.i
[2024-11-03 01:49:29,743 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:49:29,744 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:49:29,825 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:49:29,832 INFO  L333      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, 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;@505fb63b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:49:29,832 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:49:29,841 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 215 states, 154 states have (on average 1.5584415584415585) internal successors, (240), 155 states have internal predecessors, (240), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2024-11-03 01:49:29,871 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2024-11-03 01:49:29,871 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:49:29,875 INFO  L215           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:49:29,876 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:49:29,881 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:49:29,882 INFO  L85        PathProgramCache]: Analyzing trace with hash 226480514, now seen corresponding path program 1 times
[2024-11-03 01:49:29,892 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:49:29,893 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495926824]
[2024-11-03 01:49:29,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:49:29,896 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:49:29,896 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:49:29,899 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:49:29,901 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-03 01:49:31,462 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:49:31,563 INFO  L255         TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:49:31,578 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:49:31,676 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:31,677 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:49:36,810 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:36,817 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:49:36,817 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495926824]
[2024-11-03 01:49:36,818 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [495926824] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:49:36,818 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:49:36,818 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:49:36,821 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448835898]
[2024-11-03 01:49:36,821 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:49:36,827 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:49:36,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:49:36,846 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:49:36,847 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:49:36,849 INFO  L87              Difference]: Start difference. First operand  has 215 states, 154 states have (on average 1.5584415584415585) internal successors, (240), 155 states have internal predecessors, (240), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:49:36,897 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:49:36,897 INFO  L93              Difference]: Finished difference Result 423 states and 764 transitions.
[2024-11-03 01:49:36,898 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:49:36,900 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 399
[2024-11-03 01:49:36,900 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:49:36,909 INFO  L225             Difference]: With dead ends: 423
[2024-11-03 01:49:36,909 INFO  L226             Difference]: Without dead ends: 211
[2024-11-03 01:49:36,916 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 796 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:49:36,922 INFO  L432           NwaCegarLoop]: 348 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-03 01:49:36,923 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:49:36,941 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 211 states.
[2024-11-03 01:49:37,022 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211.
[2024-11-03 01:49:37,026 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 211 states, 151 states have (on average 1.5364238410596027) internal successors, (232), 151 states have internal predecessors, (232), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2024-11-03 01:49:37,032 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 348 transitions.
[2024-11-03 01:49:37,035 INFO  L78                 Accepts]: Start accepts. Automaton has 211 states and 348 transitions. Word has length 399
[2024-11-03 01:49:37,036 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:49:37,036 INFO  L471      AbstractCegarLoop]: Abstraction has 211 states and 348 transitions.
[2024-11-03 01:49:37,036 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 56.0) internal successors, (112), 2 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:49:37,036 INFO  L276                IsEmpty]: Start isEmpty. Operand 211 states and 348 transitions.
[2024-11-03 01:49:37,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2024-11-03 01:49:37,051 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:49:37,052 INFO  L215           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:49:37,068 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-03 01:49:37,252 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:49:37,253 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:49:37,254 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:49:37,254 INFO  L85        PathProgramCache]: Analyzing trace with hash -1557984188, now seen corresponding path program 1 times
[2024-11-03 01:49:37,254 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:49:37,255 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941103678]
[2024-11-03 01:49:37,255 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:49:37,255 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:49:37,255 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:49:37,258 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:49:37,259 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-03 01:49:38,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:49:38,811 INFO  L255         TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:49:38,819 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:49:39,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:39,417 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:49:44,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:44,927 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:49:44,927 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941103678]
[2024-11-03 01:49:44,928 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1941103678] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:49:44,928 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:49:44,928 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:49:44,928 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394990136]
[2024-11-03 01:49:44,928 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:49:44,931 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:49:44,931 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:49:44,932 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:49:44,932 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:49:44,932 INFO  L87              Difference]: Start difference. First operand 211 states and 348 transitions. Second operand  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:49:49,860 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.62s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:49:49,883 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:49:49,883 INFO  L93              Difference]: Finished difference Result 545 states and 896 transitions.
[2024-11-03 01:49:50,094 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:49:50,095 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 399
[2024-11-03 01:49:50,096 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:49:50,100 INFO  L225             Difference]: With dead ends: 545
[2024-11-03 01:49:50,100 INFO  L226             Difference]: Without dead ends: 337
[2024-11-03 01:49:50,102 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:49:50,103 INFO  L432           NwaCegarLoop]: 545 mSDtfsCounter, 333 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 749 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time
[2024-11-03 01:49:50,104 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [333 Valid, 749 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time]
[2024-11-03 01:49:50,105 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 337 states.
[2024-11-03 01:49:50,133 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 211.
[2024-11-03 01:49:50,134 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 211 states, 151 states have (on average 1.5231788079470199) internal successors, (230), 151 states have internal predecessors, (230), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2024-11-03 01:49:50,136 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 346 transitions.
[2024-11-03 01:49:50,137 INFO  L78                 Accepts]: Start accepts. Automaton has 211 states and 346 transitions. Word has length 399
[2024-11-03 01:49:50,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:49:50,139 INFO  L471      AbstractCegarLoop]: Abstraction has 211 states and 346 transitions.
[2024-11-03 01:49:50,140 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:49:50,140 INFO  L276                IsEmpty]: Start isEmpty. Operand 211 states and 346 transitions.
[2024-11-03 01:49:50,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2024-11-03 01:49:50,145 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:49:50,146 INFO  L215           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:49:50,159 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Forceful destruction successful, exit code 0
[2024-11-03 01:49:50,346 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:49:50,347 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:49:50,348 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:49:50,348 INFO  L85        PathProgramCache]: Analyzing trace with hash -1134337466, now seen corresponding path program 1 times
[2024-11-03 01:49:50,348 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:49:50,348 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118879865]
[2024-11-03 01:49:50,348 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:49:50,349 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:49:50,349 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:49:50,352 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:49:50,353 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-03 01:49:51,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:49:51,705 INFO  L255         TraceCheckSpWp]: Trace formula consists of 703 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:49:51,712 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:49:52,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:52,239 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:49:58,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:49:58,713 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:49:58,714 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [118879865]
[2024-11-03 01:49:58,714 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [118879865] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:49:58,714 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:49:58,714 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:49:58,714 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140639203]
[2024-11-03 01:49:58,714 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:49:58,716 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:49:58,717 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:49:58,717 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:49:58,718 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:49:58,718 INFO  L87              Difference]: Start difference. First operand 211 states and 346 transitions. Second operand  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:50:01,432 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:50:06,230 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:50:10,239 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:50:10,572 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:50:10,573 INFO  L93              Difference]: Finished difference Result 608 states and 996 transitions.
[2024-11-03 01:50:10,573 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:50:10,573 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 399
[2024-11-03 01:50:10,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:50:10,578 INFO  L225             Difference]: With dead ends: 608
[2024-11-03 01:50:10,578 INFO  L226             Difference]: Without dead ends: 400
[2024-11-03 01:50:10,579 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:50:10,580 INFO  L432           NwaCegarLoop]: 632 mSDtfsCounter, 311 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 9 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time
[2024-11-03 01:50:10,581 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 944 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 16 Invalid, 2 Unknown, 0 Unchecked, 11.8s Time]
[2024-11-03 01:50:10,582 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 400 states.
[2024-11-03 01:50:10,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 228.
[2024-11-03 01:50:10,608 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 228 states, 168 states have (on average 1.5) internal successors, (252), 168 states have internal predecessors, (252), 58 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58)
[2024-11-03 01:50:10,613 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 368 transitions.
[2024-11-03 01:50:10,613 INFO  L78                 Accepts]: Start accepts. Automaton has 228 states and 368 transitions. Word has length 399
[2024-11-03 01:50:10,615 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:50:10,615 INFO  L471      AbstractCegarLoop]: Abstraction has 228 states and 368 transitions.
[2024-11-03 01:50:10,616 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:50:10,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 228 states and 368 transitions.
[2024-11-03 01:50:10,621 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2024-11-03 01:50:10,622 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:50:10,622 INFO  L215           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:50:10,635 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 01:50:10,822 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:50:10,823 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:50:10,824 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:50:10,824 INFO  L85        PathProgramCache]: Analyzing trace with hash 1667377544, now seen corresponding path program 1 times
[2024-11-03 01:50:10,824 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:50:10,824 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590651920]
[2024-11-03 01:50:10,824 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:50:10,824 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:50:10,825 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:50:10,826 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:50:10,827 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-03 01:50:11,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:50:12,075 INFO  L255         TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-03 01:50:12,081 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:50:12,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:50:12,564 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:50:19,125 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:50:19,126 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:50:19,126 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590651920]
[2024-11-03 01:50:19,126 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [590651920] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:50:19,126 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:50:19,127 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3
[2024-11-03 01:50:19,127 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990785708]
[2024-11-03 01:50:19,127 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:50:19,128 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-03 01:50:19,128 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:50:19,129 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-03 01:50:19,129 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:50:19,129 INFO  L87              Difference]: Start difference. First operand 228 states and 368 transitions. Second operand  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:50:25,747 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.61s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:50:29,758 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []
[2024-11-03 01:50:31,334 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:50:31,334 INFO  L93              Difference]: Finished difference Result 676 states and 1094 transitions.
[2024-11-03 01:50:31,349 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-03 01:50:31,350 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58) Word has length 399
[2024-11-03 01:50:31,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:50:31,353 INFO  L225             Difference]: With dead ends: 676
[2024-11-03 01:50:31,354 INFO  L226             Difference]: Without dead ends: 451
[2024-11-03 01:50:31,355 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 796 GetRequests, 795 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-03 01:50:31,359 INFO  L432           NwaCegarLoop]: 661 mSDtfsCounter, 327 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:50:31,359 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [327 Valid, 985 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 2 Unknown, 0 Unchecked, 12.2s Time]
[2024-11-03 01:50:31,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 451 states.
[2024-11-03 01:50:31,400 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 447.
[2024-11-03 01:50:31,401 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 447 states, 328 states have (on average 1.4908536585365855) internal successors, (489), 328 states have internal predecessors, (489), 116 states have call successors, (116), 2 states have call predecessors, (116), 2 states have return successors, (116), 116 states have call predecessors, (116), 116 states have call successors, (116)
[2024-11-03 01:50:31,404 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 721 transitions.
[2024-11-03 01:50:31,405 INFO  L78                 Accepts]: Start accepts. Automaton has 447 states and 721 transitions. Word has length 399
[2024-11-03 01:50:31,407 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:50:31,407 INFO  L471      AbstractCegarLoop]: Abstraction has 447 states and 721 transitions.
[2024-11-03 01:50:31,407 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 3 states have internal predecessors, (112), 1 states have call successors, (58), 1 states have call predecessors, (58), 1 states have return successors, (58), 1 states have call predecessors, (58), 1 states have call successors, (58)
[2024-11-03 01:50:31,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 447 states and 721 transitions.
[2024-11-03 01:50:31,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 400
[2024-11-03 01:50:31,410 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:50:31,414 INFO  L215           NwaCegarLoop]: trace histogram [58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:50:31,427 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-11-03 01:50:31,615 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:50:31,615 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:50:31,616 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:50:31,616 INFO  L85        PathProgramCache]: Analyzing trace with hash -942038712, now seen corresponding path program 1 times
[2024-11-03 01:50:31,616 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:50:31,616 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142245209]
[2024-11-03 01:50:31,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:50:31,616 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:50:31,616 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:50:31,617 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:50:31,618 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-03 01:50:32,840 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:50:32,933 INFO  L255         TraceCheckSpWp]: Trace formula consists of 702 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:50:32,940 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:50:36,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 6612 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6612 trivial. 0 not checked.
[2024-11-03 01:50:36,594 INFO  L311         TraceCheckSpWp]: Computing backward predicates...