/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-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-04 22:55:05,631 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-04 22:55:05,715 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Bitvector.epf
[2024-11-04 22:55:05,722 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-04 22:55:05,722 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-04 22:55:05,756 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-04 22:55:05,757 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-04 22:55:05,757 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-04 22:55:05,758 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-04 22:55:05,759 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-04 22:55:05,759 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-04 22:55:05,759 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-04 22:55:05,760 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-04 22:55:05,760 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-04 22:55:05,761 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-04 22:55:05,761 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-04 22:55:05,761 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-04 22:55:05,762 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-04 22:55:05,762 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-04 22:55:05,766 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-04 22:55:05,766 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-04 22:55:05,769 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-04 22:55:05,769 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-04 22:55:05,770 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-04 22:55:05,770 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-04 22:55:05,770 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-04 22:55:05,770 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-04 22:55:05,771 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-04 22:55:05,771 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-04 22:55:05,771 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-04 22:55:05,771 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-04 22:55:05,772 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 22:55:05,772 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-04 22:55:05,772 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-04 22:55:05,773 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-04 22:55:05,773 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-04 22:55:05,773 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt 
[2024-11-04 22:55:05,774 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-04 22:55:05,774 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-04 22:55:05,774 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-04 22:55:05,774 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-04 22:55:05,775 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-04 22:55:05,976 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-04 22:55:06,001 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-04 22:55:06,003 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-04 22:55:06,004 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-04 22:55:06,005 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-04 22:55:06,006 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c
[2024-11-04 22:55:07,451 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-04 22:55:07,627 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-04 22:55:07,628 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c
[2024-11-04 22:55:07,635 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a254c8177/348d9c2bde9d4ef89b111c34e0d87cff/FLAGfaa7f17fb
[2024-11-04 22:55:08,017 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a254c8177/348d9c2bde9d4ef89b111c34e0d87cff
[2024-11-04 22:55:08,019 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-04 22:55:08,021 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-04 22:55:08,022 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-04 22:55:08,023 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-04 22:55:08,028 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-04 22:55:08,029 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,030 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76323867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08, skipping insertion in model container
[2024-11-04 22:55:08,030 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,054 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-04 22:55:08,212 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1260,1273]
[2024-11-04 22:55:08,249 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 22:55:08,259 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-04 22:55:08,269 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardware-verification-bv/btor2c-lazyMod.vis_arrays_vsa16a_p3.c[1260,1273]
[2024-11-04 22:55:08,302 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-04 22:55:08,316 INFO  L204         MainTranslator]: Completed translation
[2024-11-04 22:55:08,316 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08 WrapperNode
[2024-11-04 22:55:08,317 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-04 22:55:08,318 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-04 22:55:08,318 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-04 22:55:08,318 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-04 22:55:08,325 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,333 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,353 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 133
[2024-11-04 22:55:08,354 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-04 22:55:08,354 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-04 22:55:08,355 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-04 22:55:08,355 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-04 22:55:08,364 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,364 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,370 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,386 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].
[2024-11-04 22:55:08,386 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,386 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,395 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,398 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,400 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,401 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,403 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-04 22:55:08,404 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-04 22:55:08,404 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-04 22:55:08,404 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-04 22:55:08,406 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (1/1) ...
[2024-11-04 22:55:08,413 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-04 22:55:08,426 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-04 22:55:08,445 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)
[2024-11-04 22:55:08,448 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
[2024-11-04 22:55:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-04 22:55:08,482 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-04 22:55:08,485 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-04 22:55:08,485 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-04 22:55:08,571 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-04 22:55:08,573 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-04 22:55:08,758 INFO  L?                        ?]: Removed 31 outVars from TransFormulas that were not future-live.
[2024-11-04 22:55:08,758 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-04 22:55:08,771 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-04 22:55:08,773 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-04 22:55:08,773 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:55:08 BoogieIcfgContainer
[2024-11-04 22:55:08,773 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-04 22:55:08,776 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-04 22:55:08,776 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-04 22:55:08,780 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-04 22:55:08,781 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.11 10:55:08" (1/3) ...
[2024-11-04 22:55:08,781 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e52e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:55:08, skipping insertion in model container
[2024-11-04 22:55:08,782 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.11 10:55:08" (2/3) ...
[2024-11-04 22:55:08,782 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e52e3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.11 10:55:08, skipping insertion in model container
[2024-11-04 22:55:08,782 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.11 10:55:08" (3/3) ...
[2024-11-04 22:55:08,784 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.vis_arrays_vsa16a_p3.c
[2024-11-04 22:55:08,799 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-04 22:55:08,800 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-04 22:55:08,846 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-04 22:55:08,851 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;@728395e0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-04 22:55:08,851 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-04 22:55:08,854 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:08,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2024-11-04 22:55:08,859 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 22:55:08,860 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2024-11-04 22:55:08,860 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 22:55:08,864 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 22:55:08,864 INFO  L85        PathProgramCache]: Analyzing trace with hash 28694789, now seen corresponding path program 1 times
[2024-11-04 22:55:08,871 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 22:55:08,871 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [674702946]
[2024-11-04 22:55:08,871 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 22:55:08,873 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-04 22:55:08,873 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-04 22:55:08,874 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)
[2024-11-04 22:55:08,876 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-11-04 22:55:09,013 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 22:55:09,016 INFO  L255         TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 18 conjuncts are in the unsatisfiable core
[2024-11-04 22:55:09,024 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 22:55:09,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:09,257 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 22:55:09,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:09,321 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 22:55:09,322 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [674702946]
[2024-11-04 22:55:09,322 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [674702946] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-04 22:55:09,322 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-04 22:55:09,322 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-11-04 22:55:09,324 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554631038]
[2024-11-04 22:55:09,324 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-04 22:55:09,328 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-11-04 22:55:09,328 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 22:55:09,346 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-11-04 22:55:09,346 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-11-04 22:55:09,348 INFO  L87              Difference]: Start difference. First operand  has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:09,396 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 22:55:09,396 INFO  L93              Difference]: Finished difference Result 18 states and 23 transitions.
[2024-11-04 22:55:09,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-04 22:55:09,399 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5
[2024-11-04 22:55:09,400 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 22:55:09,406 INFO  L225             Difference]: With dead ends: 18
[2024-11-04 22:55:09,406 INFO  L226             Difference]: Without dead ends: 10
[2024-11-04 22:55:09,409 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-11-04 22:55:09,412 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 4 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-04 22:55:09,414 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 14 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-04 22:55:09,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-04 22:55:09,439 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9.
[2024-11-04 22:55:09,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:09,440 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions.
[2024-11-04 22:55:09,442 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5
[2024-11-04 22:55:09,442 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 22:55:09,442 INFO  L471      AbstractCegarLoop]: Abstraction has 9 states and 9 transitions.
[2024-11-04 22:55:09,442 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:09,442 INFO  L276                IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions.
[2024-11-04 22:55:09,443 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-04 22:55:09,443 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 22:55:09,443 INFO  L215           NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2024-11-04 22:55:09,446 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0
[2024-11-04 22:55:09,644 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
[2024-11-04 22:55:09,645 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 22:55:09,645 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 22:55:09,646 INFO  L85        PathProgramCache]: Analyzing trace with hash 152739811, now seen corresponding path program 1 times
[2024-11-04 22:55:09,646 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 22:55:09,646 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277194662]
[2024-11-04 22:55:09,646 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 22:55:09,646 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-04 22:55:09,647 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-04 22:55:09,650 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)
[2024-11-04 22:55:09,651 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-11-04 22:55:09,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 22:55:09,773 INFO  L255         TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 21 conjuncts are in the unsatisfiable core
[2024-11-04 22:55:09,780 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 22:55:09,945 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:09,946 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 22:55:10,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:10,209 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 22:55:10,209 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277194662]
[2024-11-04 22:55:10,209 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1277194662] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 22:55:10,209 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 22:55:10,210 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-11-04 22:55:10,210 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055697957]
[2024-11-04 22:55:10,210 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 22:55:10,212 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-04 22:55:10,212 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 22:55:10,213 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-04 22:55:10,213 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2024-11-04 22:55:10,213 INFO  L87              Difference]: Start difference. First operand 9 states and 9 transitions. Second operand  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:10,409 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 22:55:10,410 INFO  L93              Difference]: Finished difference Result 18 states and 19 transitions.
[2024-11-04 22:55:10,410 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-11-04 22:55:10,411 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-04 22:55:10,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 22:55:10,411 INFO  L225             Difference]: With dead ends: 18
[2024-11-04 22:55:10,412 INFO  L226             Difference]: Without dead ends: 16
[2024-11-04 22:55:10,412 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132
[2024-11-04 22:55:10,413 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 6 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-04 22:55:10,414 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 14 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-04 22:55:10,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2024-11-04 22:55:10,420 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15.
[2024-11-04 22:55:10,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 15 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:10,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions.
[2024-11-04 22:55:10,422 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8
[2024-11-04 22:55:10,422 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 22:55:10,422 INFO  L471      AbstractCegarLoop]: Abstraction has 15 states and 15 transitions.
[2024-11-04 22:55:10,422 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 1.75) internal successors, (14), 8 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:10,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions.
[2024-11-04 22:55:10,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2024-11-04 22:55:10,423 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 22:55:10,423 INFO  L215           NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1]
[2024-11-04 22:55:10,427 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-04 22:55:10,626 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
[2024-11-04 22:55:10,626 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 22:55:10,627 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 22:55:10,627 INFO  L85        PathProgramCache]: Analyzing trace with hash 1333570723, now seen corresponding path program 2 times
[2024-11-04 22:55:10,627 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 22:55:10,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144391057]
[2024-11-04 22:55:10,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 22:55:10,628 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-04 22:55:10,628 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-04 22:55:10,631 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)
[2024-11-04 22:55:10,634 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-11-04 22:55:10,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 22:55:10,800 INFO  L255         TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 24 conjuncts are in the unsatisfiable core
[2024-11-04 22:55:10,805 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 22:55:11,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:11,104 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 22:55:12,083 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:12,084 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 22:55:12,084 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144391057]
[2024-11-04 22:55:12,084 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1144391057] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 22:55:12,084 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 22:55:12,084 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2024-11-04 22:55:12,084 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595080211]
[2024-11-04 22:55:12,085 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 22:55:12,085 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 12 states
[2024-11-04 22:55:12,085 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 22:55:12,086 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2024-11-04 22:55:12,086 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2024-11-04 22:55:12,086 INFO  L87              Difference]: Start difference. First operand 15 states and 15 transitions. Second operand  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:13,051 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 22:55:13,052 INFO  L93              Difference]: Finished difference Result 32 states and 34 transitions.
[2024-11-04 22:55:13,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2024-11-04 22:55:13,052 INFO  L78                 Accepts]: Start accepts. Automaton has  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14
[2024-11-04 22:55:13,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 22:55:13,053 INFO  L225             Difference]: With dead ends: 32
[2024-11-04 22:55:13,053 INFO  L226             Difference]: Without dead ends: 30
[2024-11-04 22:55:13,054 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420
[2024-11-04 22:55:13,054 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 12 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-11-04 22:55:13,055 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 28 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-11-04 22:55:13,056 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2024-11-04 22:55:13,064 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27.
[2024-11-04 22:55:13,064 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:13,065 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2024-11-04 22:55:13,065 INFO  L78                 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 14
[2024-11-04 22:55:13,065 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 22:55:13,065 INFO  L471      AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2024-11-04 22:55:13,065 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 12 states, 12 states have (on average 2.1666666666666665) internal successors, (26), 12 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:13,065 INFO  L276                IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2024-11-04 22:55:13,066 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2024-11-04 22:55:13,066 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 22:55:13,066 INFO  L215           NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1]
[2024-11-04 22:55:13,070 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-04 22:55:13,269 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
[2024-11-04 22:55:13,270 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 22:55:13,271 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 22:55:13,271 INFO  L85        PathProgramCache]: Analyzing trace with hash -37306491, now seen corresponding path program 3 times
[2024-11-04 22:55:13,271 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 22:55:13,271 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238840905]
[2024-11-04 22:55:13,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 22:55:13,272 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-04 22:55:13,272 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-04 22:55:13,274 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)
[2024-11-04 22:55:13,275 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-11-04 22:55:13,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 22:55:13,474 INFO  L255         TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-04 22:55:13,481 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 22:55:14,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:14,000 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-04 22:55:17,935 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-04 22:55:17,935 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-04 22:55:17,937 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238840905]
[2024-11-04 22:55:17,937 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [238840905] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-04 22:55:17,937 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-04 22:55:17,937 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2024-11-04 22:55:17,937 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435565482]
[2024-11-04 22:55:17,938 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-04 22:55:17,938 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-04 22:55:17,940 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-04 22:55:17,941 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-04 22:55:17,941 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182
[2024-11-04 22:55:17,941 INFO  L87              Difference]: Start difference. First operand 27 states and 28 transitions. Second operand  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:55:24,124 WARN  L851   $PredicateComparison]: unable to prove that (let ((.cse9 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_6~0#1|))) (let ((.cse3 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_1~0#1|)) (.cse6 ((_ zero_extend 24) |c_ULTIMATE.start_main_~mask_SORT_12~0#1|)) (.cse8 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_14~0#1|)) (.cse34 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_7~0#1|))))))) (.cse13 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_51~0#1|)) (.cse33 ((_ zero_extend 24) |c_ULTIMATE.start_main_~state_8~0#1|)) (.cse11 ((_ zero_extend 24) |c_ULTIMATE.start_main_~var_49~0#1|))) (let ((.cse30 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse33 .cse11))))))))) (.cse14 (= .cse34 .cse13)) (.cse1 (let ((.cse35 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse34 (_ bv2 32)))))))) (.cse36 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse34)) .cse6))) .cse8))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse35))))))))))))) .cse36) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse35))))))))))))) (not .cse36)))))) (let ((.cse15 (or (not .cse14) .cse1)) (.cse10 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse34 .cse11))))))))) (.cse19 (= .cse30 .cse13)) (.cse21 (= .cse33 .cse13))) (let ((.cse0 (not .cse21)) (.cse22 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse33 (_ bv2 32)))))))) (.cse23 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse33)) .cse6))) .cse8)) (.cse18 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse30 .cse11))))))))) (.cse20 (not .cse19)) (.cse2 (and .cse15 (or .cse14 (let ((.cse31 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse10 (_ bv2 32)))))))) (.cse32 (= .cse8 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse10)))))))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse31 (_ bv0 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))) .cse3)))) .cse32) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse31 (_ bv1 32)))))))))))))) (not .cse32)))))))) (and (or .cse0 .cse1) (or .cse2 .cse0) (or (and (or (let ((.cse12 (= .cse10 .cse13))) (and (or (let ((.cse7 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse10 .cse11)))))))))) (let ((.cse4 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse7 (_ bv2 32)))))))) (.cse5 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse7))))) .cse8))) (and (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse4))))))))))))) (not .cse5)) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse4))))))))))))) .cse5)))) .cse12) (or (not .cse12) .cse1))) .cse14) .cse15) .cse0) (or (and (or (let ((.cse16 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse18))))) .cse8)) (.cse17 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse18 (_ bv2 32))))))))) (and (or .cse16 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse17))))))))) .cse3))))) (or (not .cse16) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse17)))))))))))))))) .cse19) (or .cse20 .cse1)) .cse21) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 (_ bv1 32))))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))))) (_ bv0 8))) (not .cse23)) (or (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor .cse22 (_ bv0 32)))))))))))))) .cse23) (or .cse21 (and (or .cse19 (let ((.cse27 (= .cse18 .cse13))) (and (or (let ((.cse26 ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse9 ((_ zero_extend 24) ((_ extract 7 0) ((_ zero_extend 24) ((_ extract 7 0) (bvadd .cse18 .cse11)))))))))) (let ((.cse24 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand .cse6 ((_ zero_extend 24) ((_ extract 7 0) .cse26))))) .cse8)) (.cse25 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse26 (_ bv2 32))))))))) (and (or .cse24 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse25)))))))))))))) (or (not .cse24) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse25))))))))))) (_ bv0 8))))))) .cse27) (or (not .cse27) .cse1)))) (or .cse20 .cse2))) (or .cse21 (let ((.cse28 (= ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) .cse30)) .cse6))) .cse8)) (.cse29 ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvashr .cse30 (_ bv2 32))))))))) (and (or .cse28 (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= (_ bv0 8) ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|) ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv0 32) .cse29)))))))))))))) (or (not .cse28) (forall ((|v_ULTIMATE.start_main_~var_21_arg_0~0#1_28| (_ BitVec 8))) (= ((_ extract 7 0) (bvand .cse3 ((_ zero_extend 24) ((_ extract 7 0) (bvand ((_ zero_extend 24) ((_ extract 7 0) (bvnot ((_ zero_extend 24) ((_ extract 7 0) (bvor (_ bv1 32) .cse29)))))) ((_ zero_extend 24) |v_ULTIMATE.start_main_~var_21_arg_0~0#1_28|)))))) (_ bv0 8))))))))))))) is different from false
[2024-11-04 22:55:30,022 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-04 22:55:34,424 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.40s for a HTC check with result INVALID. Formula has sorts [Bool, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [1]
[2024-11-04 22:56:04,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-04 22:56:04,852 INFO  L93              Difference]: Finished difference Result 36 states and 38 transitions.
[2024-11-04 22:56:04,853 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2024-11-04 22:56:04,853 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17
[2024-11-04 22:56:04,853 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-04 22:56:04,854 INFO  L225             Difference]: With dead ends: 36
[2024-11-04 22:56:04,854 INFO  L226             Difference]: Without dead ends: 34
[2024-11-04 22:56:04,855 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 38.3s TimeCoverageRelationStatistics Valid=204, Invalid=498, Unknown=4, NotChecked=50, Total=756
[2024-11-04 22:56:04,856 INFO  L432           NwaCegarLoop]: 4 mSDtfsCounter, 10 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 9 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time
[2024-11-04 22:56:04,856 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 25 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 105 Invalid, 1 Unknown, 9 Unchecked, 9.7s Time]
[2024-11-04 22:56:04,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2024-11-04 22:56:04,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33.
[2024-11-04 22:56:04,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:56:04,867 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions.
[2024-11-04 22:56:04,867 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 17
[2024-11-04 22:56:04,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-04 22:56:04,867 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 33 transitions.
[2024-11-04 22:56:04,868 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 2.2857142857142856) internal successors, (32), 14 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-04 22:56:04,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions.
[2024-11-04 22:56:04,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-11-04 22:56:04,869 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-04 22:56:04,869 INFO  L215           NwaCegarLoop]: trace histogram [10, 9, 9, 1, 1, 1, 1]
[2024-11-04 22:56:04,876 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-11-04 22:56:05,069 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
[2024-11-04 22:56:05,070 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-04 22:56:05,070 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-04 22:56:05,070 INFO  L85        PathProgramCache]: Analyzing trace with hash 1946645219, now seen corresponding path program 4 times
[2024-11-04 22:56:05,070 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-04 22:56:05,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189191211]
[2024-11-04 22:56:05,071 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-04 22:56:05,071 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-04 22:56:05,071 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-04 22:56:05,072 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)
[2024-11-04 22:56:05,073 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-11-04 22:56:05,320 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-04 22:56:05,326 INFO  L255         TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 38 conjuncts are in the unsatisfiable core
[2024-11-04 22:56:05,332 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-04 22:56:25,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-04 22:56:25,563 INFO  L311         TraceCheckSpWp]: Computing backward predicates...