./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/sum02-2.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 803cd42f
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/sum02-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) )

 --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m
[2024-11-21 21:15:02,279 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-21 21:15:02,329 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-21 21:15:02,335 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-21 21:15:02,336 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-21 21:15:02,358 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-21 21:15:02,358 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-21 21:15:02,358 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-21 21:15:02,359 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-21 21:15:02,363 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-21 21:15:02,363 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-21 21:15:02,363 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-21 21:15:02,364 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-21 21:15:02,364 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-21 21:15:02,364 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-21 21:15:02,364 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-21 21:15:02,364 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-21 21:15:02,364 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-21 21:15:02,365 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-21 21:15:02,365 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-21 21:15:02,365 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-21 21:15:02,365 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-21 21:15:02,366 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-21 21:15:02,366 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-21 21:15:02,366 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-21 21:15:02,366 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-21 21:15:02,366 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-21 21:15:02,367 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-21 21:15:02,367 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-21 21:15:02,367 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-21 21:15:02,367 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-21 21:15:02,367 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-21 21:15:02,367 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-21 21:15:02,368 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-21 21:15:02,368 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-21 21:15:02,368 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-21 21:15:02,368 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-21 21:15:02,368 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-21 21:15:02,369 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-21 21:15:02,369 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-21 21:15:02,369 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-21 21:15:02,371 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-21 21:15:02,372 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.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) )


Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80bce81184682208d15520c2d0ae5d9c5f1236c4de557bfddd91c6f88a04aad8
[2024-11-21 21:15:02,559 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-21 21:15:02,580 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-21 21:15:02,582 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-21 21:15:02,584 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-21 21:15:02,584 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-21 21:15:02,585 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/sum02-2.c
[2024-11-21 21:15:03,788 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-21 21:15:03,919 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-21 21:15:03,920 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c
[2024-11-21 21:15:03,926 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb95e62a/289d30822d7344dc8a1e3e3797f5f833/FLAGa46491ec7
[2024-11-21 21:15:04,339 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3cb95e62a/289d30822d7344dc8a1e3e3797f5f833
[2024-11-21 21:15:04,342 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-21 21:15:04,343 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-21 21:15:04,343 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-21 21:15:04,343 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-21 21:15:04,347 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-21 21:15:04,348 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,349 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cbda074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04, skipping insertion in model container
[2024-11-21 21:15:04,349 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,362 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-21 21:15:04,500 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c[711,724]
[2024-11-21 21:15:04,520 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-21 21:15:04,526 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-21 21:15:04,535 WARN  L250   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/sum02-2.c[711,724]
[2024-11-21 21:15:04,537 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-21 21:15:04,549 INFO  L204         MainTranslator]: Completed translation
[2024-11-21 21:15:04,549 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04 WrapperNode
[2024-11-21 21:15:04,549 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-21 21:15:04,550 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-21 21:15:04,550 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-21 21:15:04,550 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-21 21:15:04,555 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,559 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,571 INFO  L138                Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 36
[2024-11-21 21:15:04,572 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-21 21:15:04,572 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-21 21:15:04,572 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-21 21:15:04,572 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-21 21:15:04,580 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,580 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,581 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,592 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].
[2024-11-21 21:15:04,592 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,592 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,594 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,596 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,597 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,598 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,598 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-21 21:15:04,599 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-21 21:15:04,599 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-21 21:15:04,599 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-21 21:15:04,600 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (1/1) ...
[2024-11-21 21:15:04,605 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-21 21:15:04,614 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-21 21:15:04,628 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)
[2024-11-21 21:15:04,631 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
[2024-11-21 21:15:04,668 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-21 21:15:04,669 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-21 21:15:04,669 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-21 21:15:04,669 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-21 21:15:04,718 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-21 21:15:04,721 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-21 21:15:04,829 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-21 21:15:04,829 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-21 21:15:04,841 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-21 21:15:04,841 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-21 21:15:04,841 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:15:04 BoogieIcfgContainer
[2024-11-21 21:15:04,841 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-21 21:15:04,844 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-21 21:15:04,844 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-21 21:15:04,847 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-21 21:15:04,847 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:15:04" (1/3) ...
[2024-11-21 21:15:04,848 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8874e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:15:04, skipping insertion in model container
[2024-11-21 21:15:04,848 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:15:04" (2/3) ...
[2024-11-21 21:15:04,849 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e8874e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:15:04, skipping insertion in model container
[2024-11-21 21:15:04,849 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:15:04" (3/3) ...
[2024-11-21 21:15:04,851 INFO  L112   eAbstractionObserver]: Analyzing ICFG sum02-2.c
[2024-11-21 21:15:04,865 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-21 21:15:04,866 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-21 21:15:04,921 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-21 21:15:04,926 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;@18cd5e35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-21 21:15:04,927 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-21 21:15:04,931 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:04,935 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-21 21:15:04,935 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:15:04,935 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:15:04,936 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:15:04,939 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:15:04,940 INFO  L85        PathProgramCache]: Analyzing trace with hash 119658891, now seen corresponding path program 1 times
[2024-11-21 21:15:04,947 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:15:04,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715951441]
[2024-11-21 21:15:04,948 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-21 21:15:04,948 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:15:05,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-21 21:15:05,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:05,073 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-21 21:15:05,073 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715951441]
[2024-11-21 21:15:05,074 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715951441] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-21 21:15:05,074 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-21 21:15:05,074 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-21 21:15:05,075 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486297101]
[2024-11-21 21:15:05,076 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-21 21:15:05,079 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-21 21:15:05,079 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-21 21:15:05,094 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-21 21:15:05,094 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-21 21:15:05,096 INFO  L87              Difference]: Start difference. First operand  has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,105 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-21 21:15:05,106 INFO  L93              Difference]: Finished difference Result 25 states and 30 transitions.
[2024-11-21 21:15:05,107 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-21 21:15:05,108 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-21 21:15:05,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-21 21:15:05,113 INFO  L225             Difference]: With dead ends: 25
[2024-11-21 21:15:05,114 INFO  L226             Difference]: Without dead ends: 10
[2024-11-21 21:15:05,116 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-21 21:15:05,120 INFO  L432           NwaCegarLoop]: 14 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, 14 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
[2024-11-21 21:15:05,121 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-21 21:15:05,135 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2024-11-21 21:15:05,143 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2024-11-21 21:15:05,144 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 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)
[2024-11-21 21:15:05,145 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2024-11-21 21:15:05,146 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8
[2024-11-21 21:15:05,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-21 21:15:05,146 INFO  L471      AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2024-11-21 21:15:05,146 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,146 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2024-11-21 21:15:05,146 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2024-11-21 21:15:05,147 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:15:05,147 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:15:05,147 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-21 21:15:05,147 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:15:05,148 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:15:05,148 INFO  L85        PathProgramCache]: Analyzing trace with hash 176738447, now seen corresponding path program 1 times
[2024-11-21 21:15:05,148 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:15:05,148 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530228639]
[2024-11-21 21:15:05,148 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-21 21:15:05,148 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:15:05,185 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-21 21:15:05,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:05,369 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-21 21:15:05,369 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530228639]
[2024-11-21 21:15:05,369 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530228639] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-21 21:15:05,369 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-21 21:15:05,369 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-11-21 21:15:05,369 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416578920]
[2024-11-21 21:15:05,370 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-21 21:15:05,370 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-21 21:15:05,371 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-21 21:15:05,371 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-21 21:15:05,371 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-21 21:15:05,371 INFO  L87              Difference]: Start difference. First operand 10 states and 10 transitions. Second operand  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-21 21:15:05,391 INFO  L93              Difference]: Finished difference Result 15 states and 15 transitions.
[2024-11-21 21:15:05,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-21 21:15:05,391 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8
[2024-11-21 21:15:05,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-21 21:15:05,392 INFO  L225             Difference]: With dead ends: 15
[2024-11-21 21:15:05,392 INFO  L226             Difference]: Without dead ends: 11
[2024-11-21 21:15:05,395 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-11-21 21:15:05,396 INFO  L432           NwaCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-21 21:15:05,396 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 20 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-21 21:15:05,397 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11 states.
[2024-11-21 21:15:05,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11.
[2024-11-21 21:15:05,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,400 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions.
[2024-11-21 21:15:05,400 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 8
[2024-11-21 21:15:05,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-21 21:15:05,400 INFO  L471      AbstractCegarLoop]: Abstraction has 11 states and 11 transitions.
[2024-11-21 21:15:05,400 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,401 INFO  L276                IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions.
[2024-11-21 21:15:05,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2024-11-21 21:15:05,401 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:15:05,401 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:15:05,401 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-21 21:15:05,401 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:15:05,402 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:15:05,403 INFO  L85        PathProgramCache]: Analyzing trace with hash -1899811727, now seen corresponding path program 1 times
[2024-11-21 21:15:05,403 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:15:05,406 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389916726]
[2024-11-21 21:15:05,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-21 21:15:05,406 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:15:05,444 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-21 21:15:05,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:05,716 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-21 21:15:05,716 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389916726]
[2024-11-21 21:15:05,717 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389916726] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-21 21:15:05,717 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1369378432]
[2024-11-21 21:15:05,717 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-21 21:15:05,717 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:15:05,717 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-21 21:15:05,721 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-21 21:15:05,722 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-21 21:15:05,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-21 21:15:05,771 INFO  L255         TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-21 21:15:05,775 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-21 21:15:05,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:05,830 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-21 21:15:05,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:05,909 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1369378432] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-21 21:15:05,912 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-11-21 21:15:05,912 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 10
[2024-11-21 21:15:05,912 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493178497]
[2024-11-21 21:15:05,912 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-11-21 21:15:05,912 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2024-11-21 21:15:05,912 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-21 21:15:05,913 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2024-11-21 21:15:05,913 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2024-11-21 21:15:05,913 INFO  L87              Difference]: Start difference. First operand 11 states and 11 transitions. Second operand  has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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)
[2024-11-21 21:15:05,946 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-21 21:15:05,946 INFO  L93              Difference]: Finished difference Result 17 states and 17 transitions.
[2024-11-21 21:15:05,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-11-21 21:15:05,947 INFO  L78                 Accepts]: Start accepts. Automaton has  has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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) Word has length 10
[2024-11-21 21:15:05,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-21 21:15:05,948 INFO  L225             Difference]: With dead ends: 17
[2024-11-21 21:15:05,949 INFO  L226             Difference]: Without dead ends: 13
[2024-11-21 21:15:05,949 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90
[2024-11-21 21:15:05,950 INFO  L432           NwaCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-11-21 21:15:05,950 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-21 21:15:05,951 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2024-11-21 21:15:05,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2024-11-21 21:15:05,952 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 13 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:05,952 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions.
[2024-11-21 21:15:05,952 INFO  L78                 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10
[2024-11-21 21:15:05,952 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-21 21:15:05,953 INFO  L471      AbstractCegarLoop]: Abstraction has 13 states and 13 transitions.
[2024-11-21 21:15:05,953 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 10 states have (on average 2.2) internal successors, (22), 10 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)
[2024-11-21 21:15:05,953 INFO  L276                IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions.
[2024-11-21 21:15:05,953 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2024-11-21 21:15:05,953 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:15:05,953 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:15:05,961 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2024-11-21 21:15:06,157 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:15:06,159 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:15:06,160 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:15:06,160 INFO  L85        PathProgramCache]: Analyzing trace with hash -304736301, now seen corresponding path program 2 times
[2024-11-21 21:15:06,160 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:15:06,161 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251457621]
[2024-11-21 21:15:06,161 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-21 21:15:06,161 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:15:06,181 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-21 21:15:06,181 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-21 21:15:06,182 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1909707867]
[2024-11-21 21:15:06,183 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2024-11-21 21:15:06,183 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:15:06,183 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-21 21:15:06,186 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-21 21:15:06,188 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-21 21:15:06,229 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2024-11-21 21:15:06,230 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-21 21:15:06,232 INFO  L255         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 22 conjuncts are in the unsatisfiable core
[2024-11-21 21:15:06,234 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-21 21:15:06,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:06,319 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-21 21:15:07,820 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:07,820 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-21 21:15:07,820 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251457621]
[2024-11-21 21:15:07,821 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-21 21:15:07,821 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909707867]
[2024-11-21 21:15:07,821 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909707867] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-21 21:15:07,821 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-21 21:15:07,821 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10] total 16
[2024-11-21 21:15:07,822 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188142353]
[2024-11-21 21:15:07,822 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-21 21:15:07,822 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 16 states
[2024-11-21 21:15:07,822 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-21 21:15:07,824 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2024-11-21 21:15:07,824 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240
[2024-11-21 21:15:07,824 INFO  L87              Difference]: Start difference. First operand 13 states and 13 transitions. Second operand  has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:10,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-21 21:15:10,061 INFO  L93              Difference]: Finished difference Result 24 states and 26 transitions.
[2024-11-21 21:15:10,062 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2024-11-21 21:15:10,062 INFO  L78                 Accepts]: Start accepts. Automaton has  has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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
[2024-11-21 21:15:10,062 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-21 21:15:10,062 INFO  L225             Difference]: With dead ends: 24
[2024-11-21 21:15:10,063 INFO  L226             Difference]: Without dead ends: 19
[2024-11-21 21:15:10,063 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342
[2024-11-21 21:15:10,064 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-21 21:15:10,064 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 40 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-21 21:15:10,064 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2024-11-21 21:15:10,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2024-11-21 21:15:10,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 19 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:10,068 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions.
[2024-11-21 21:15:10,068 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12
[2024-11-21 21:15:10,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-21 21:15:10,069 INFO  L471      AbstractCegarLoop]: Abstraction has 19 states and 19 transitions.
[2024-11-21 21:15:10,069 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 16 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:10,069 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions.
[2024-11-21 21:15:10,070 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2024-11-21 21:15:10,070 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:15:10,070 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:15:10,080 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-21 21:15:10,274 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3
[2024-11-21 21:15:10,275 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:15:10,275 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:15:10,275 INFO  L85        PathProgramCache]: Analyzing trace with hash 822048505, now seen corresponding path program 3 times
[2024-11-21 21:15:10,275 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:15:10,275 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460880864]
[2024-11-21 21:15:10,275 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-21 21:15:10,276 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:15:10,310 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-21 21:15:10,310 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-21 21:15:10,311 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653683207]
[2024-11-21 21:15:10,311 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2024-11-21 21:15:10,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:15:10,311 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-21 21:15:10,314 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-21 21:15:10,315 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-21 21:15:10,474 INFO  L227   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2024-11-21 21:15:10,474 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-21 21:15:10,475 WARN  L253         TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 37 conjuncts are in the unsatisfiable core
[2024-11-21 21:15:10,477 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-21 21:15:10,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:10,690 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-21 21:15:36,311 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:15:36,311 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-21 21:15:36,311 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460880864]
[2024-11-21 21:15:36,312 WARN  L311   FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT
[2024-11-21 21:15:36,312 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653683207]
[2024-11-21 21:15:36,312 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653683207] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-21 21:15:36,312 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-21 21:15:36,312 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 16] total 28
[2024-11-21 21:15:36,312 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760938750]
[2024-11-21 21:15:36,312 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-21 21:15:36,313 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 28 states
[2024-11-21 21:15:36,313 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-21 21:15:36,321 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2024-11-21 21:15:36,322 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=621, Unknown=1, NotChecked=0, Total=756
[2024-11-21 21:15:36,322 INFO  L87              Difference]: Start difference. First operand 19 states and 19 transitions. Second operand  has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:15:46,112 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers [1]
[2024-11-21 21:16:03,656 WARN  L539   Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=true, quantifiers []
[2024-11-21 21:16:16,503 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-21 21:16:16,503 INFO  L93              Difference]: Finished difference Result 36 states and 41 transitions.
[2024-11-21 21:16:16,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2024-11-21 21:16:16,506 INFO  L78                 Accepts]: Start accepts. Automaton has  has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18
[2024-11-21 21:16:16,506 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-21 21:16:16,506 INFO  L225             Difference]: With dead ends: 36
[2024-11-21 21:16:16,506 INFO  L226             Difference]: Without dead ends: 31
[2024-11-21 21:16:16,507 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 55.7s TimeCoverageRelationStatistics Valid=255, Invalid=1076, Unknown=1, NotChecked=0, Total=1332
[2024-11-21 21:16:16,507 INFO  L432           NwaCegarLoop]: 6 mSDtfsCounter, 0 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time
[2024-11-21 21:16:16,507 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 61 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 197 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time]
[2024-11-21 21:16:16,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2024-11-21 21:16:16,515 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31.
[2024-11-21 21:16:16,515 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 31 states, 30 states have (on average 1.0333333333333334) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:16:16,515 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions.
[2024-11-21 21:16:16,516 INFO  L78                 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 18
[2024-11-21 21:16:16,516 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-21 21:16:16,516 INFO  L471      AbstractCegarLoop]: Abstraction has 31 states and 31 transitions.
[2024-11-21 21:16:16,516 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 28 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 28 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-11-21 21:16:16,516 INFO  L276                IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions.
[2024-11-21 21:16:16,516 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2024-11-21 21:16:16,517 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-21 21:16:16,517 INFO  L215           NwaCegarLoop]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-21 21:16:16,521 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-21 21:16:16,720 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:16:16,721 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-21 21:16:16,721 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-21 21:16:16,721 INFO  L85        PathProgramCache]: Analyzing trace with hash -803719227, now seen corresponding path program 4 times
[2024-11-21 21:16:16,721 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-21 21:16:16,721 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183014536]
[2024-11-21 21:16:16,721 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-21 21:16:16,721 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-21 21:16:16,756 INFO  L227   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-21 21:16:16,756 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unknown
[2024-11-21 21:16:16,757 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1828379003]
[2024-11-21 21:16:16,757 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2024-11-21 21:16:16,757 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-21 21:16:16,757 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-21 21:16:16,759 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-21 21:16:16,760 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-21 21:16:16,956 INFO  L227   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2024-11-21 21:16:16,956 INFO  L228   tOrderPrioritization]: Conjunction of SSA is unsat
[2024-11-21 21:16:16,957 WARN  L253         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 64 conjuncts are in the unsatisfiable core
[2024-11-21 21:16:16,959 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-21 21:16:17,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 0 proven. 121 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-21 21:16:17,383 INFO  L311         TraceCheckSpWp]: Computing backward predicates...