/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/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c


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


This is Ultimate 0.2.5-dev-356b6ba-m
[2024-10-31 19:33:25,425 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-31 19:33:25,499 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf
[2024-10-31 19:33:25,511 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-31 19:33:25,512 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-31 19:33:25,538 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-31 19:33:25,539 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-31 19:33:25,539 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-31 19:33:25,540 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-31 19:33:25,540 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-31 19:33:25,540 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-31 19:33:25,541 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-31 19:33:25,542 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-31 19:33:25,545 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-31 19:33:25,545 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-31 19:33:25,545 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-31 19:33:25,545 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-31 19:33:25,546 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-31 19:33:25,546 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-31 19:33:25,546 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-31 19:33:25,546 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-31 19:33:25,548 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-31 19:33:25,548 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-31 19:33:25,548 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-10-31 19:33:25,548 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-10-31 19:33:25,548 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-31 19:33:25,549 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-10-31 19:33:25,549 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-31 19:33:25,549 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-31 19:33:25,549 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-31 19:33:25,550 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-31 19:33:25,550 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-31 19:33:25,550 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-31 19:33:25,550 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-31 19:33:25,550 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 19:33:25,551 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-31 19:33:25,551 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-31 19:33:25,551 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-31 19:33:25,551 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-10-31 19:33:25,551 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:25,551 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-31 19:33:25,552 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-31 19:33:25,552 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-31 19:33:25,552 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-31 19:33:25,552 INFO  L153        SettingsManager]:  * Logic for external solver=AUFBV
[2024-10-31 19:33:25,552 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:25,811 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-31 19:33:25,832 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-31 19:33:25,835 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-31 19:33:25,836 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-31 19:33:25,837 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-31 19:33:25,838 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-10-31 19:33:27,168 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-31 19:33:27,371 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-31 19:33:27,371 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c
[2024-10-31 19:33:27,376 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cedbf634e/842614b01c544996806c93e4b24e5152/FLAGc9cd2eb85
[2024-10-31 19:33:27,386 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cedbf634e/842614b01c544996806c93e4b24e5152
[2024-10-31 19:33:27,388 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-31 19:33:27,389 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-10-31 19:33:27,390 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-31 19:33:27,390 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-31 19:33:27,394 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-31 19:33:27,395 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,396 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ee74ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27, skipping insertion in model container
[2024-10-31 19:33:27,396 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,407 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-31 19:33:27,548 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-10-31 19:33:27,566 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 19:33:27,574 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-31 19:33:27,584 WARN  L251   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector-loops/verisec_sendmail_tTflag_arr_one_loop.c[387,400]
[2024-10-31 19:33:27,589 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-31 19:33:27,605 INFO  L204         MainTranslator]: Completed translation
[2024-10-31 19:33:27,605 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27 WrapperNode
[2024-10-31 19:33:27,605 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-31 19:33:27,606 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-31 19:33:27,606 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-31 19:33:27,606 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-31 19:33:27,610 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,617 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,632 INFO  L138                Inliner]: procedures = 14, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 57
[2024-10-31 19:33:27,632 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-31 19:33:27,633 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-31 19:33:27,633 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-31 19:33:27,633 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-31 19:33:27,641 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,641 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,644 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,656 INFO  L175           MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2].
[2024-10-31 19:33:27,656 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,657 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,661 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,665 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,667 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,670 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,672 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-31 19:33:27,672 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-31 19:33:27,672 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-31 19:33:27,672 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-31 19:33:27,673 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (1/1) ...
[2024-10-31 19:33:27,678 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-31 19:33:27,687 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-31 19:33:27,703 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)
[2024-10-31 19:33:27,717 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
[2024-10-31 19:33:27,740 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-31 19:33:27,740 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#0
[2024-10-31 19:33:27,740 INFO  L130     BoogieDeclarations]: Found specification of procedure read~intINTTYPE1#1
[2024-10-31 19:33:27,740 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-10-31 19:33:27,741 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#1
[2024-10-31 19:33:27,741 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2024-10-31 19:33:27,742 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-31 19:33:27,742 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-31 19:33:27,742 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#0
[2024-10-31 19:33:27,742 INFO  L130     BoogieDeclarations]: Found specification of procedure write~intINTTYPE1#1
[2024-10-31 19:33:27,742 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2024-10-31 19:33:27,807 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-31 19:33:27,811 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-31 19:33:27,941 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-10-31 19:33:27,941 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-31 19:33:27,952 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-31 19:33:27,952 INFO  L316             CfgBuilder]: Removed 2 assume(true) statements.
[2024-10-31 19:33:27,953 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:33:27 BoogieIcfgContainer
[2024-10-31 19:33:27,953 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-31 19:33:27,956 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-31 19:33:27,956 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-31 19:33:27,959 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-31 19:33:27,960 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 07:33:27" (1/3) ...
[2024-10-31 19:33:27,960 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599e634e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:33:27, skipping insertion in model container
[2024-10-31 19:33:27,961 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 07:33:27" (2/3) ...
[2024-10-31 19:33:27,961 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599e634e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 07:33:27, skipping insertion in model container
[2024-10-31 19:33:27,962 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 07:33:27" (3/3) ...
[2024-10-31 19:33:27,964 INFO  L112   eAbstractionObserver]: Analyzing ICFG verisec_sendmail_tTflag_arr_one_loop.c
[2024-10-31 19:33:27,976 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-31 19:33:27,976 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-31 19:33:28,013 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-31 19:33:28,018 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;@5da6fc28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-31 19:33:28,018 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-31 19:33:28,021 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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)
[2024-10-31 19:33:28,024 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-10-31 19:33:28,025 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:28,025 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:28,025 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:28,029 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:28,029 INFO  L85        PathProgramCache]: Analyzing trace with hash 212076531, now seen corresponding path program 1 times
[2024-10-31 19:33:28,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:28,035 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [945953229]
[2024-10-31 19:33:28,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:28,037 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:28,037 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:28,056 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)
[2024-10-31 19:33:28,063 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process
[2024-10-31 19:33:28,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:28,139 INFO  L255         TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:28,142 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:33:28,175 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:28,176 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:33:28,187 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:28,188 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:33:28,188 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [945953229]
[2024-10-31 19:33:28,189 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [945953229] provided 2 perfect and 0 imperfect interpolant sequences
[2024-10-31 19:33:28,189 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-10-31 19:33:28,189 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4
[2024-10-31 19:33:28,190 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270716751]
[2024-10-31 19:33:28,191 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-10-31 19:33:28,194 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-31 19:33:28,195 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:33:28,213 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-31 19:33:28,214 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-31 19:33:28,217 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.5) internal successors, (18), 13 states have internal predecessors, (18), 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 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-10-31 19:33:28,264 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:33:28,265 INFO  L93              Difference]: Finished difference Result 31 states and 45 transitions.
[2024-10-31 19:33:28,266 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-31 19:33:28,267 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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
[2024-10-31 19:33:28,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:33:28,273 INFO  L225             Difference]: With dead ends: 31
[2024-10-31 19:33:28,273 INFO  L226             Difference]: Without dead ends: 17
[2024-10-31 19:33:28,275 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-10-31 19:33:28,278 INFO  L432           NwaCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-31 19:33:28,279 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-31 19:33:28,290 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2024-10-31 19:33:28,297 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 13.
[2024-10-31 19:33:28,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 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)
[2024-10-31 19:33:28,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2024-10-31 19:33:28,299 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8
[2024-10-31 19:33:28,300 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:33:28,300 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2024-10-31 19:33:28,300 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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)
[2024-10-31 19:33:28,300 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2024-10-31 19:33:28,300 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-10-31 19:33:28,301 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:28,301 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:28,304 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0
[2024-10-31 19:33:28,503 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
[2024-10-31 19:33:28,504 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:28,504 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:28,504 INFO  L85        PathProgramCache]: Analyzing trace with hash 780776823, now seen corresponding path program 1 times
[2024-10-31 19:33:28,504 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:28,505 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [48229050]
[2024-10-31 19:33:28,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:28,505 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:28,505 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:28,507 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)
[2024-10-31 19:33:28,508 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process
[2024-10-31 19:33:28,575 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:28,576 INFO  L255         TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:28,578 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:33:28,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:28,647 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:33:28,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:28,692 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:33:28,692 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [48229050]
[2024-10-31 19:33:28,692 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [48229050] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:33:28,693 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:33:28,693 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2024-10-31 19:33:28,693 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183954768]
[2024-10-31 19:33:28,693 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:33:28,694 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-10-31 19:33:28,694 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:33:28,695 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-10-31 19:33:28,695 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-10-31 19:33:28,695 INFO  L87              Difference]: Start difference. First operand 13 states and 14 transitions. Second operand  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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)
[2024-10-31 19:33:28,801 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:33:28,801 INFO  L93              Difference]: Finished difference Result 31 states and 38 transitions.
[2024-10-31 19:33:28,802 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2024-10-31 19:33:28,802 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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 12
[2024-10-31 19:33:28,803 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:33:28,804 INFO  L225             Difference]: With dead ends: 31
[2024-10-31 19:33:28,804 INFO  L226             Difference]: Without dead ends: 25
[2024-10-31 19:33:28,804 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90
[2024-10-31 19:33:28,805 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 9 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-31 19:33:28,806 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 22 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-31 19:33:28,809 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2024-10-31 19:33:28,812 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 21.
[2024-10-31 19:33:28,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 21 states, 20 states have (on average 1.1) internal successors, (22), 20 states have internal predecessors, (22), 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)
[2024-10-31 19:33:28,813 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2024-10-31 19:33:28,813 INFO  L78                 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 12
[2024-10-31 19:33:28,813 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:33:28,814 INFO  L471      AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2024-10-31 19:33:28,814 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 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)
[2024-10-31 19:33:28,814 INFO  L276                IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2024-10-31 19:33:28,814 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2024-10-31 19:33:28,814 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:28,815 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:28,821 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0
[2024-10-31 19:33:29,015 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
[2024-10-31 19:33:29,016 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:29,016 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:29,016 INFO  L85        PathProgramCache]: Analyzing trace with hash -2109281665, now seen corresponding path program 2 times
[2024-10-31 19:33:29,016 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:29,017 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427175034]
[2024-10-31 19:33:29,017 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:29,017 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:29,017 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:29,020 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)
[2024-10-31 19:33:29,022 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process
[2024-10-31 19:33:29,095 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:29,097 INFO  L255         TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 8 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:29,099 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:33:29,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:29,181 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:33:29,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-31 19:33:29,338 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:33:29,338 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1427175034]
[2024-10-31 19:33:29,338 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1427175034] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:33:29,338 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:33:29,338 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2024-10-31 19:33:29,338 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99766717]
[2024-10-31 19:33:29,338 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:33:29,339 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-10-31 19:33:29,339 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:33:29,339 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-10-31 19:33:29,340 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240
[2024-10-31 19:33:29,340 INFO  L87              Difference]: Start difference. First operand 21 states and 22 transitions. Second operand  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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)
[2024-10-31 19:33:29,522 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:33:29,522 INFO  L93              Difference]: Finished difference Result 41 states and 49 transitions.
[2024-10-31 19:33:29,522 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-10-31 19:33:29,523 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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 20
[2024-10-31 19:33:29,523 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:33:29,523 INFO  L225             Difference]: With dead ends: 41
[2024-10-31 19:33:29,523 INFO  L226             Difference]: Without dead ends: 35
[2024-10-31 19:33:29,524 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2024-10-31 19:33:29,524 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-31 19:33:29,525 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 44 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-31 19:33:29,525 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2024-10-31 19:33:29,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2024-10-31 19:33:29,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 30 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)
[2024-10-31 19:33:29,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2024-10-31 19:33:29,529 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20
[2024-10-31 19:33:29,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:33:29,529 INFO  L471      AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2024-10-31 19:33:29,530 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 2.125) internal successors, (34), 16 states have internal predecessors, (34), 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)
[2024-10-31 19:33:29,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2024-10-31 19:33:29,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-10-31 19:33:29,530 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:29,530 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:29,533 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-10-31 19:33:29,731 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
[2024-10-31 19:33:29,731 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:29,732 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:29,732 INFO  L85        PathProgramCache]: Analyzing trace with hash 2041591177, now seen corresponding path program 3 times
[2024-10-31 19:33:29,732 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:29,732 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031840885]
[2024-10-31 19:33:29,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:29,732 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:29,733 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:29,735 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)
[2024-10-31 19:33:29,758 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process
[2024-10-31 19:33:29,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:29,894 INFO  L255         TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:29,896 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:33:29,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-10-31 19:33:29,921 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:33:29,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-10-31 19:33:29,949 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:33:29,949 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031840885]
[2024-10-31 19:33:29,949 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1031840885] provided 2 perfect and 0 imperfect interpolant sequences
[2024-10-31 19:33:29,950 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-10-31 19:33:29,950 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6
[2024-10-31 19:33:29,950 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662236411]
[2024-10-31 19:33:29,950 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-10-31 19:33:29,950 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2024-10-31 19:33:29,950 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:33:29,951 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2024-10-31 19:33:29,951 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-31 19:33:29,951 INFO  L87              Difference]: Start difference. First operand 31 states and 32 transitions. Second operand  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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)
[2024-10-31 19:33:30,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:33:30,002 INFO  L93              Difference]: Finished difference Result 38 states and 40 transitions.
[2024-10-31 19:33:30,003 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-31 19:33:30,003 INFO  L78                 Accepts]: Start accepts. Automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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 30
[2024-10-31 19:33:30,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:33:30,004 INFO  L225             Difference]: With dead ends: 38
[2024-10-31 19:33:30,004 INFO  L226             Difference]: Without dead ends: 33
[2024-10-31 19:33:30,004 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-31 19:33:30,005 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 2 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-31 19:33:30,005 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-31 19:33:30,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2024-10-31 19:33:30,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2024-10-31 19:33:30,012 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 33 states, 32 states have (on average 1.0625) internal successors, (34), 32 states have internal predecessors, (34), 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)
[2024-10-31 19:33:30,013 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2024-10-31 19:33:30,013 INFO  L78                 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30
[2024-10-31 19:33:30,013 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:33:30,013 INFO  L471      AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2024-10-31 19:33:30,013 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 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)
[2024-10-31 19:33:30,014 INFO  L276                IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2024-10-31 19:33:30,014 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2024-10-31 19:33:30,014 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:30,014 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:30,020 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0
[2024-10-31 19:33:30,215 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
[2024-10-31 19:33:30,215 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:30,216 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:30,216 INFO  L85        PathProgramCache]: Analyzing trace with hash -777640855, now seen corresponding path program 1 times
[2024-10-31 19:33:30,217 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:30,217 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [913206906]
[2024-10-31 19:33:30,217 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:30,217 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:30,217 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:30,222 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)
[2024-10-31 19:33:30,226 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process
[2024-10-31 19:33:30,336 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:30,338 INFO  L255         TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:30,341 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:33:30,536 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-10-31 19:33:30,537 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-31 19:33:30,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 124 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-10-31 19:33:30,755 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-10-31 19:33:30,755 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [913206906]
[2024-10-31 19:33:30,755 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [913206906] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-31 19:33:30,755 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-10-31 19:33:30,755 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2024-10-31 19:33:30,755 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149257504]
[2024-10-31 19:33:30,755 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-10-31 19:33:30,756 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-10-31 19:33:30,756 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-10-31 19:33:30,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-10-31 19:33:30,756 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90
[2024-10-31 19:33:30,757 INFO  L87              Difference]: Start difference. First operand 33 states and 34 transitions. Second operand  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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)
[2024-10-31 19:33:31,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-31 19:33:31,215 INFO  L93              Difference]: Finished difference Result 44 states and 48 transitions.
[2024-10-31 19:33:31,215 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2024-10-31 19:33:31,215 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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 32
[2024-10-31 19:33:31,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-31 19:33:31,216 INFO  L225             Difference]: With dead ends: 44
[2024-10-31 19:33:31,216 INFO  L226             Difference]: Without dead ends: 37
[2024-10-31 19:33:31,216 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132
[2024-10-31 19:33:31,217 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 14 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-10-31 19:33:31,217 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 29 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-10-31 19:33:31,218 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2024-10-31 19:33:31,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2024-10-31 19:33:31,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 37 states, 36 states have (on average 1.0555555555555556) internal successors, (38), 36 states have internal predecessors, (38), 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)
[2024-10-31 19:33:31,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2024-10-31 19:33:31,234 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 32
[2024-10-31 19:33:31,234 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-31 19:33:31,234 INFO  L471      AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2024-10-31 19:33:31,235 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 1.8) internal successors, (18), 10 states have internal predecessors, (18), 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)
[2024-10-31 19:33:31,235 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2024-10-31 19:33:31,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-10-31 19:33:31,237 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-31 19:33:31,237 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 6, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-10-31 19:33:31,244 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0
[2024-10-31 19:33:31,439 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
[2024-10-31 19:33:31,440 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-31 19:33:31,440 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-31 19:33:31,440 INFO  L85        PathProgramCache]: Analyzing trace with hash 2139052585, now seen corresponding path program 2 times
[2024-10-31 19:33:31,440 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-10-31 19:33:31,440 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [144255589]
[2024-10-31 19:33:31,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-31 19:33:31,441 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-10-31 19:33:31,441 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-10-31 19:33:31,442 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)
[2024-10-31 19:33:31,443 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process
[2024-10-31 19:33:31,609 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-31 19:33:31,611 INFO  L255         TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 28 conjuncts are in the unsatisfiable core
[2024-10-31 19:33:31,614 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-31 19:34:16,380 INFO  L134       CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 20 refuted. 1 times theorem prover too weak. 121 trivial. 0 not checked.
[2024-10-31 19:34:16,380 INFO  L311         TraceCheckSpWp]: Computing backward predicates...