/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_amount25_file-33.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 01:27:14,505 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 01:27:14,582 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 01:27:14,589 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 01:27:14,590 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 01:27:14,617 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 01:27:14,617 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 01:27:14,618 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 01:27:14,618 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 01:27:14,619 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 01:27:14,619 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 01:27:14,619 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 01:27:14,620 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 01:27:14,620 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 01:27:14,620 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 01:27:14,621 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 01:27:14,621 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 01:27:14,621 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 01:27:14,622 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 01:27:14,622 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 01:27:14,622 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 01:27:14,623 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 01:27:14,623 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 01:27:14,623 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 01:27:14,623 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 01:27:14,624 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 01:27:14,624 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 01:27:14,624 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 01:27:14,624 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 01:27:14,625 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 01:27:14,625 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 01:27:14,625 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 01:27:14,625 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 01:27:14,626 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 01:27:14,626 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:27:14,629 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 01:27:14,629 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 01:27:14,630 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 01:27:14,630 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 01:27:14,630 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:14,630 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 01:27:14,631 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 01:27:14,631 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 01:27:14,631 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 01:27:14,631 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:14,845 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 01:27:14,868 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 01:27:14,871 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 01:27:14,872 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 01:27:14,872 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 01:27:14,873 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-33.i
[2024-11-03 01:27:16,284 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 01:27:16,452 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 01:27:16,452 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-33.i
[2024-11-03 01:27:16,460 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff383e4/809dd1781d5946b8aa87bce617f5df00/FLAGd4c56062c
[2024-11-03 01:27:16,472 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13ff383e4/809dd1781d5946b8aa87bce617f5df00
[2024-11-03 01:27:16,474 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 01:27:16,475 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 01:27:16,476 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 01:27:16,476 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 01:27:16,480 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 01:27:16,481 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,482 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fef60bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16, skipping insertion in model container
[2024-11-03 01:27:16,482 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,503 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 01:27:16,649 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_amount25_file-33.i[915,928]
[2024-11-03 01:27:16,692 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:27:16,706 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 01:27:16,715 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_amount25_file-33.i[915,928]
[2024-11-03 01:27:16,732 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 01:27:16,751 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 01:27:16,752 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16 WrapperNode
[2024-11-03 01:27:16,752 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 01:27:16,753 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 01:27:16,753 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 01:27:16,753 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 01:27:16,759 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,770 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,789 INFO  L138                Inliner]: procedures = 27, calls = 21, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 89
[2024-11-03 01:27:16,790 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 01:27:16,791 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 01:27:16,791 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 01:27:16,791 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 01:27:16,804 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,804 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,807 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,819 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 01:27:16,820 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,820 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,828 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,831 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,833 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,834 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,837 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 01:27:16,838 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 01:27:16,838 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 01:27:16,838 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 01:27:16,838 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (1/1) ...
[2024-11-03 01:27:16,845 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 01:27:16,855 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 01:27:16,871 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 01:27:16,874 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 01:27:16,899 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 01:27:16,900 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 01:27:16,900 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 01:27:16,900 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 01:27:16,900 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 01:27:16,900 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 01:27:16,984 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 01:27:16,987 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 01:27:17,283 INFO  L?                        ?]: Removed 16 outVars from TransFormulas that were not future-live.
[2024-11-03 01:27:17,283 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 01:27:17,304 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 01:27:17,304 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 01:27:17,305 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:17 BoogieIcfgContainer
[2024-11-03 01:27:17,305 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 01:27:17,309 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 01:27:17,309 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 01:27:17,312 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 01:27:17,312 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:27:16" (1/3) ...
[2024-11-03 01:27:17,312 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c1ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:17, skipping insertion in model container
[2024-11-03 01:27:17,313 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:27:16" (2/3) ...
[2024-11-03 01:27:17,313 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70c1ec61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:27:17, skipping insertion in model container
[2024-11-03 01:27:17,313 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:27:17" (3/3) ...
[2024-11-03 01:27:17,314 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-33.i
[2024-11-03 01:27:17,335 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 01:27:17,335 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 01:27:17,387 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 01:27:17,396 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;@6c4f5cf9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 01:27:17,397 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 01:27:17,401 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-03 01:27:17,410 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-11-03 01:27:17,410 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:17,411 INFO  L215           NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:17,411 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:17,416 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:17,417 INFO  L85        PathProgramCache]: Analyzing trace with hash -1891658366, now seen corresponding path program 1 times
[2024-11-03 01:27:17,425 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:17,426 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328925789]
[2024-11-03 01:27:17,426 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:17,428 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:17,431 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:17,434 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 01:27:17,436 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 01:27:17,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:17,631 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:17,637 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:17,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2024-11-03 01:27:17,674 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:17,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2024-11-03 01:27:17,748 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:17,748 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328925789]
[2024-11-03 01:27:17,749 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1328925789] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:27:17,749 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:27:17,750 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 01:27:17,751 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168557991]
[2024-11-03 01:27:17,752 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:27:17,755 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 01:27:17,755 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:17,776 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 01:27:17,777 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 01:27:17,778 INFO  L87              Difference]: Start difference. First operand  has 40 states, 29 states have (on average 1.3793103448275863) internal successors, (40), 30 states have internal predecessors, (40), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8)
[2024-11-03 01:27:17,795 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:17,795 INFO  L93              Difference]: Finished difference Result 73 states and 114 transitions.
[2024-11-03 01:27:17,796 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 01:27:17,797 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 60
[2024-11-03 01:27:17,798 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:17,804 INFO  L225             Difference]: With dead ends: 73
[2024-11-03 01:27:17,804 INFO  L226             Difference]: Without dead ends: 36
[2024-11-03 01:27:17,808 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 118 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 01:27:17,811 INFO  L432           NwaCegarLoop]: 48 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, 48 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 01:27:17,811 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 01:27:17,827 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2024-11-03 01:27:17,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2024-11-03 01:27:17,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 36 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 26 states have internal predecessors, (32), 8 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8)
[2024-11-03 01:27:17,843 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 48 transitions.
[2024-11-03 01:27:17,844 INFO  L78                 Accepts]: Start accepts. Automaton has 36 states and 48 transitions. Word has length 60
[2024-11-03 01:27:17,845 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:17,845 INFO  L471      AbstractCegarLoop]: Abstraction has 36 states and 48 transitions.
[2024-11-03 01:27:17,845 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 1 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8)
[2024-11-03 01:27:17,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 36 states and 48 transitions.
[2024-11-03 01:27:17,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-11-03 01:27:17,847 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:17,847 INFO  L215           NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:17,850 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 01:27:18,047 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 01:27:18,048 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:18,049 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:18,049 INFO  L85        PathProgramCache]: Analyzing trace with hash -458830138, now seen corresponding path program 1 times
[2024-11-03 01:27:18,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:18,049 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711527001]
[2024-11-03 01:27:18,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:18,050 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:18,050 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:18,052 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 01:27:18,053 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 01:27:18,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:18,302 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:18,305 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:18,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:18,478 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:18,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:18,611 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:18,611 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711527001]
[2024-11-03 01:27:18,611 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [711527001] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:27:18,611 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:27:18,612 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8
[2024-11-03 01:27:18,612 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161941642]
[2024-11-03 01:27:18,612 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:27:18,615 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:27:18,615 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:18,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:27:18,617 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:27:18,617 INFO  L87              Difference]: Start difference. First operand 36 states and 48 transitions. Second operand  has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:18,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:18,862 INFO  L93              Difference]: Finished difference Result 112 states and 149 transitions.
[2024-11-03 01:27:18,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-03 01:27:18,865 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 60
[2024-11-03 01:27:18,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:18,867 INFO  L225             Difference]: With dead ends: 112
[2024-11-03 01:27:18,867 INFO  L226             Difference]: Without dead ends: 79
[2024-11-03 01:27:18,868 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:27:18,870 INFO  L432           NwaCegarLoop]: 44 mSDtfsCounter, 116 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:27:18,871 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 214 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:27:18,873 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2024-11-03 01:27:18,893 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67.
[2024-11-03 01:27:18,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 67 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 48 states have internal predecessors, (59), 16 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16)
[2024-11-03 01:27:18,895 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions.
[2024-11-03 01:27:18,895 INFO  L78                 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 60
[2024-11-03 01:27:18,896 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:18,896 INFO  L471      AbstractCegarLoop]: Abstraction has 67 states and 91 transitions.
[2024-11-03 01:27:18,896 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:18,896 INFO  L276                IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions.
[2024-11-03 01:27:18,897 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-11-03 01:27:18,898 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:18,898 INFO  L215           NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:18,903 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-11-03 01:27:19,098 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 01:27:19,099 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:19,100 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:19,100 INFO  L85        PathProgramCache]: Analyzing trace with hash -851857148, now seen corresponding path program 1 times
[2024-11-03 01:27:19,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:19,100 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015683552]
[2024-11-03 01:27:19,100 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:19,100 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:19,101 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:19,102 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 01:27:19,103 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 01:27:19,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:19,309 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:19,312 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:19,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:19,458 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:19,726 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:19,726 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:19,727 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015683552]
[2024-11-03 01:27:19,727 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1015683552] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:27:19,727 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:27:19,727 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 10
[2024-11-03 01:27:19,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293981414]
[2024-11-03 01:27:19,727 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:27:19,728 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-03 01:27:19,730 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:19,732 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-03 01:27:19,733 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90
[2024-11-03 01:27:19,733 INFO  L87              Difference]: Start difference. First operand 67 states and 91 transitions. Second operand  has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:20,149 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:20,149 INFO  L93              Difference]: Finished difference Result 211 states and 287 transitions.
[2024-11-03 01:27:20,149 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-11-03 01:27:20,150 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 60
[2024-11-03 01:27:20,150 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:20,152 INFO  L225             Difference]: With dead ends: 211
[2024-11-03 01:27:20,152 INFO  L226             Difference]: Without dead ends: 147
[2024-11-03 01:27:20,153 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182
[2024-11-03 01:27:20,154 INFO  L432           NwaCegarLoop]: 67 mSDtfsCounter, 125 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-03 01:27:20,155 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 274 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-03 01:27:20,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 147 states.
[2024-11-03 01:27:20,176 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 97.
[2024-11-03 01:27:20,177 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 97 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 69 states have internal predecessors, (83), 24 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-03 01:27:20,178 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 131 transitions.
[2024-11-03 01:27:20,179 INFO  L78                 Accepts]: Start accepts. Automaton has 97 states and 131 transitions. Word has length 60
[2024-11-03 01:27:20,179 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:20,179 INFO  L471      AbstractCegarLoop]: Abstraction has 97 states and 131 transitions.
[2024-11-03 01:27:20,179 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 4.2) internal successors, (42), 10 states have internal predecessors, (42), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:20,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 97 states and 131 transitions.
[2024-11-03 01:27:20,181 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-11-03 01:27:20,181 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:20,181 INFO  L215           NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:20,188 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0
[2024-11-03 01:27:20,381 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 01:27:20,382 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:20,383 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:20,383 INFO  L85        PathProgramCache]: Analyzing trace with hash -850010106, now seen corresponding path program 1 times
[2024-11-03 01:27:20,383 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:20,383 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [16366277]
[2024-11-03 01:27:20,383 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:20,384 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:20,384 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:20,386 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 01:27:20,388 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 01:27:20,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:20,678 INFO  L255         TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:20,681 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:20,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 43 proven. 3 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-03 01:27:20,732 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:20,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked.
[2024-11-03 01:27:20,864 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:20,864 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [16366277]
[2024-11-03 01:27:20,865 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [16366277] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 01:27:20,865 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 01:27:20,865 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-03 01:27:20,865 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179039365]
[2024-11-03 01:27:20,865 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 01:27:20,866 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 01:27:20,866 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:20,867 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 01:27:20,867 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-03 01:27:20,867 INFO  L87              Difference]: Start difference. First operand 97 states and 131 transitions. Second operand  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2024-11-03 01:27:21,154 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:21,155 INFO  L93              Difference]: Finished difference Result 182 states and 237 transitions.
[2024-11-03 01:27:21,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-11-03 01:27:21,158 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 60
[2024-11-03 01:27:21,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:21,162 INFO  L225             Difference]: With dead ends: 182
[2024-11-03 01:27:21,162 INFO  L226             Difference]: Without dead ends: 115
[2024-11-03 01:27:21,163 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182
[2024-11-03 01:27:21,164 INFO  L432           NwaCegarLoop]: 32 mSDtfsCounter, 84 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-03 01:27:21,164 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 79 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-03 01:27:21,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2024-11-03 01:27:21,195 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 109.
[2024-11-03 01:27:21,196 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 109 states, 78 states have (on average 1.141025641025641) internal successors, (89), 78 states have internal predecessors, (89), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-03 01:27:21,197 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 137 transitions.
[2024-11-03 01:27:21,198 INFO  L78                 Accepts]: Start accepts. Automaton has 109 states and 137 transitions. Word has length 60
[2024-11-03 01:27:21,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:21,198 INFO  L471      AbstractCegarLoop]: Abstraction has 109 states and 137 transitions.
[2024-11-03 01:27:21,198 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10)
[2024-11-03 01:27:21,199 INFO  L276                IsEmpty]: Start isEmpty. Operand 109 states and 137 transitions.
[2024-11-03 01:27:21,200 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-11-03 01:27:21,200 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:21,200 INFO  L215           NwaCegarLoop]: trace histogram [8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:27:21,208 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 01:27:21,406 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 01:27:21,407 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:21,407 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:21,408 INFO  L85        PathProgramCache]: Analyzing trace with hash 239176062, now seen corresponding path program 1 times
[2024-11-03 01:27:21,408 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:21,408 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [761954056]
[2024-11-03 01:27:21,408 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:21,408 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:21,408 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:21,409 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 01:27:21,411 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 01:27:21,641 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:21,646 INFO  L255         TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 16 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:21,650 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 01:27:29,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:29,511 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 01:27:34,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked.
[2024-11-03 01:27:34,563 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 01:27:34,563 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [761954056]
[2024-11-03 01:27:34,564 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [761954056] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 01:27:34,564 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 01:27:34,564 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 11] imperfect sequences [] total 20
[2024-11-03 01:27:34,564 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293476109]
[2024-11-03 01:27:34,564 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 01:27:34,565 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2024-11-03 01:27:34,565 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 01:27:34,565 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2024-11-03 01:27:34,566 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380
[2024-11-03 01:27:34,566 INFO  L87              Difference]: Start difference. First operand 109 states and 137 transitions. Second operand  has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:36,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 01:27:36,072 INFO  L93              Difference]: Finished difference Result 129 states and 159 transitions.
[2024-11-03 01:27:36,073 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2024-11-03 01:27:36,073 INFO  L78                 Accepts]: Start accepts. Automaton has  has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 61
[2024-11-03 01:27:36,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 01:27:36,075 INFO  L225             Difference]: With dead ends: 129
[2024-11-03 01:27:36,075 INFO  L226             Difference]: Without dead ends: 127
[2024-11-03 01:27:36,076 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=289, Invalid=901, Unknown=0, NotChecked=0, Total=1190
[2024-11-03 01:27:36,078 INFO  L432           NwaCegarLoop]: 32 mSDtfsCounter, 75 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-03 01:27:36,079 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 333 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-03 01:27:36,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2024-11-03 01:27:36,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 115.
[2024-11-03 01:27:36,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 115 states, 84 states have (on average 1.130952380952381) internal successors, (95), 84 states have internal predecessors, (95), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24)
[2024-11-03 01:27:36,104 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 143 transitions.
[2024-11-03 01:27:36,104 INFO  L78                 Accepts]: Start accepts. Automaton has 115 states and 143 transitions. Word has length 61
[2024-11-03 01:27:36,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 01:27:36,105 INFO  L471      AbstractCegarLoop]: Abstraction has 115 states and 143 transitions.
[2024-11-03 01:27:36,105 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 2.35) internal successors, (47), 20 states have internal predecessors, (47), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16)
[2024-11-03 01:27:36,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 115 states and 143 transitions.
[2024-11-03 01:27:36,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-03 01:27:36,107 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 01:27:36,108 INFO  L215           NwaCegarLoop]: trace histogram [16, 16, 16, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-03 01:27:36,114 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2024-11-03 01:27:36,309 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:36,309 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 01:27:36,310 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 01:27:36,310 INFO  L85        PathProgramCache]: Analyzing trace with hash -1133709702, now seen corresponding path program 1 times
[2024-11-03 01:27:36,310 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 01:27:36,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442806892]
[2024-11-03 01:27:36,311 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 01:27:36,311 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 01:27:36,311 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 01:27:36,312 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null)
[2024-11-03 01:27:36,313 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-11-03 01:27:36,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 01:27:36,713 INFO  L255         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-11-03 01:27:36,719 INFO  L278         TraceCheckSpWp]: Computing forward predicates...