./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label07.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 3061b6dc
Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/eca-rers2012/Problem03_label07.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 a8eb1c549e735c3cffa39c2cb57907d032185b5da86f8481f430bf75e1d2a903
--- Real Ultimate output ---
This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m
[2024-11-18 09:39:08,443 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-18 09:39:08,506 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-11-18 09:39:08,510 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-18 09:39:08,511 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-18 09:39:08,541 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-18 09:39:08,542 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-18 09:39:08,542 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-18 09:39:08,543 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-18 09:39:08,545 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-18 09:39:08,546 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-18 09:39:08,546 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-18 09:39:08,546 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-18 09:39:08,547 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-18 09:39:08,548 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-18 09:39:08,549 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-18 09:39:08,550 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-18 09:39:08,552 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-18 09:39:08,552 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-11-18 09:39:08,553 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-18 09:39:08,553 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-18 09:39:08,553 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-18 09:39:08,554 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-18 09:39:08,554 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-18 09:39:08,554 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-18 09:39:08,554 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-18 09:39:08,554 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-18 09:39:08,555 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-18 09:39:08,555 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-18 09:39:08,555 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-18 09:39:08,555 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-18 09:39:08,555 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-18 09:39:08,556 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:39:08,556 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-18 09:39:08,556 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-18 09:39:08,556 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-18 09:39:08,557 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-11-18 09:39:08,557 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-11-18 09:39:08,557 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-18 09:39:08,559 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-18 09:39:08,559 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-18 09:39:08,560 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-18 09:39:08,560 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 -> a8eb1c549e735c3cffa39c2cb57907d032185b5da86f8481f430bf75e1d2a903
[2024-11-18 09:39:08,853 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-18 09:39:08,874 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-18 09:39:08,880 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-18 09:39:08,881 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-18 09:39:08,881 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-18 09:39:08,882 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label07.c
[2024-11-18 09:39:10,309 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-18 09:39:10,669 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-18 09:39:10,670 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label07.c
[2024-11-18 09:39:10,699 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c199c379c/c10fb66548714339950b9444233e612b/FLAG9af28b433
[2024-11-18 09:39:10,714 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c199c379c/c10fb66548714339950b9444233e612b
[2024-11-18 09:39:10,716 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-18 09:39:10,717 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-11-18 09:39:10,721 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-18 09:39:10,721 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-18 09:39:10,727 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-18 09:39:10,728 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:39:10" (1/1) ...
[2024-11-18 09:39:10,729 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e0e31c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:10, skipping insertion in model container
[2024-11-18 09:39:10,729 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:39:10" (1/1) ...
[2024-11-18 09:39:10,803 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-18 09:39:11,355 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/eca-rers2012/Problem03_label07.c[57439,57452]
[2024-11-18 09:39:11,444 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:39:11,464 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-18 09:39:11,612 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/eca-rers2012/Problem03_label07.c[57439,57452]
[2024-11-18 09:39:11,626 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-18 09:39:11,646 INFO  L204         MainTranslator]: Completed translation
[2024-11-18 09:39:11,647 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11 WrapperNode
[2024-11-18 09:39:11,647 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-18 09:39:11,648 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-18 09:39:11,648 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-18 09:39:11,648 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-18 09:39:11,655 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,693 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,781 INFO  L138                Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1772
[2024-11-18 09:39:11,781 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-18 09:39:11,782 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-18 09:39:11,782 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-18 09:39:11,782 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-18 09:39:11,792 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,793 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,806 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,845 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].
[2024-11-18 09:39:11,846 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,846 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,899 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,916 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,932 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,940 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,957 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-18 09:39:11,959 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-18 09:39:11,960 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-18 09:39:11,960 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-18 09:39:11,961 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (1/1) ...
[2024-11-18 09:39:11,967 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-18 09:39:11,978 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:11,997 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)
[2024-11-18 09:39:12,003 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
[2024-11-18 09:39:12,051 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-18 09:39:12,052 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-11-18 09:39:12,052 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-18 09:39:12,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-18 09:39:12,136 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-18 09:39:12,138 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-18 09:39:13,960 INFO  L?                        ?]: Removed 147 outVars from TransFormulas that were not future-live.
[2024-11-18 09:39:13,961 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-18 09:39:13,994 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-18 09:39:13,994 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-18 09:39:13,994 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:39:13 BoogieIcfgContainer
[2024-11-18 09:39:13,994 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-18 09:39:13,998 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-18 09:39:13,998 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-18 09:39:14,001 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-18 09:39:14,001 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:39:10" (1/3) ...
[2024-11-18 09:39:14,002 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3656d8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:39:14, skipping insertion in model container
[2024-11-18 09:39:14,002 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:39:11" (2/3) ...
[2024-11-18 09:39:14,003 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3656d8ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:39:14, skipping insertion in model container
[2024-11-18 09:39:14,003 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:39:13" (3/3) ...
[2024-11-18 09:39:14,004 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem03_label07.c
[2024-11-18 09:39:14,020 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-18 09:39:14,020 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-18 09:39:14,130 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-18 09:39:14,138 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;@562c0487, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-18 09:39:14,138 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-18 09:39:14,144 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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)
[2024-11-18 09:39:14,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 173
[2024-11-18 09:39:14,158 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:14,159 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:14,160 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:14,165 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:14,165 INFO  L85        PathProgramCache]: Analyzing trace with hash -58959822, now seen corresponding path program 1 times
[2024-11-18 09:39:14,174 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:14,174 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107576084]
[2024-11-18 09:39:14,174 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:14,175 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:14,488 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:15,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:15,048 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:15,048 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107576084]
[2024-11-18 09:39:15,049 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107576084] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:15,049 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:15,049 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:15,051 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772171550]
[2024-11-18 09:39:15,052 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:15,057 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:15,057 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:15,085 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:15,086 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:15,090 INFO  L87              Difference]: Start difference. First operand  has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 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 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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)
[2024-11-18 09:39:16,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:16,206 INFO  L93              Difference]: Finished difference Result 864 states and 1514 transitions.
[2024-11-18 09:39:16,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:16,209 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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 172
[2024-11-18 09:39:16,210 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:16,227 INFO  L225             Difference]: With dead ends: 864
[2024-11-18 09:39:16,227 INFO  L226             Difference]: Without dead ends: 468
[2024-11-18 09:39:16,234 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:16,237 INFO  L432           NwaCegarLoop]: 130 mSDtfsCounter, 106 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 822 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:16,238 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 167 Invalid, 822 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time]
[2024-11-18 09:39:16,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 468 states.
[2024-11-18 09:39:16,305 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 468 to 454.
[2024-11-18 09:39:16,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 454 states, 453 states have (on average 1.6269315673289184) internal successors, (737), 453 states have internal predecessors, (737), 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)
[2024-11-18 09:39:16,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 737 transitions.
[2024-11-18 09:39:16,311 INFO  L78                 Accepts]: Start accepts. Automaton has 454 states and 737 transitions. Word has length 172
[2024-11-18 09:39:16,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:16,312 INFO  L471      AbstractCegarLoop]: Abstraction has 454 states and 737 transitions.
[2024-11-18 09:39:16,312 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 2 states have internal predecessors, (172), 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)
[2024-11-18 09:39:16,312 INFO  L276                IsEmpty]: Start isEmpty. Operand 454 states and 737 transitions.
[2024-11-18 09:39:16,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 178
[2024-11-18 09:39:16,317 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:16,317 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:16,317 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-11-18 09:39:16,318 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:16,318 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:16,318 INFO  L85        PathProgramCache]: Analyzing trace with hash -612505342, now seen corresponding path program 1 times
[2024-11-18 09:39:16,319 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:16,319 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316220976]
[2024-11-18 09:39:16,319 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:16,319 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:16,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:16,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:16,756 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:16,756 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316220976]
[2024-11-18 09:39:16,756 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316220976] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:16,756 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:16,757 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:16,757 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097360672]
[2024-11-18 09:39:16,757 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:16,759 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:16,759 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:16,760 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:16,760 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:16,761 INFO  L87              Difference]: Start difference. First operand 454 states and 737 transitions. Second operand  has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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)
[2024-11-18 09:39:17,543 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:17,544 INFO  L93              Difference]: Finished difference Result 1330 states and 2169 transitions.
[2024-11-18 09:39:17,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:17,544 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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 177
[2024-11-18 09:39:17,545 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:17,552 INFO  L225             Difference]: With dead ends: 1330
[2024-11-18 09:39:17,552 INFO  L226             Difference]: Without dead ends: 878
[2024-11-18 09:39:17,554 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:17,555 INFO  L432           NwaCegarLoop]: 128 mSDtfsCounter, 251 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:17,555 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 163 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:17,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 878 states.
[2024-11-18 09:39:17,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 874.
[2024-11-18 09:39:17,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 874 states, 873 states have (on average 1.52233676975945) internal successors, (1329), 873 states have internal predecessors, (1329), 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)
[2024-11-18 09:39:17,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1329 transitions.
[2024-11-18 09:39:17,616 INFO  L78                 Accepts]: Start accepts. Automaton has 874 states and 1329 transitions. Word has length 177
[2024-11-18 09:39:17,617 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:17,617 INFO  L471      AbstractCegarLoop]: Abstraction has 874 states and 1329 transitions.
[2024-11-18 09:39:17,617 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 59.0) internal successors, (177), 2 states have internal predecessors, (177), 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)
[2024-11-18 09:39:17,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 874 states and 1329 transitions.
[2024-11-18 09:39:17,624 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 181
[2024-11-18 09:39:17,624 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:17,625 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:17,625 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-11-18 09:39:17,625 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:17,626 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:17,626 INFO  L85        PathProgramCache]: Analyzing trace with hash 1500805969, now seen corresponding path program 1 times
[2024-11-18 09:39:17,626 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:17,627 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534106159]
[2024-11-18 09:39:17,627 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:17,627 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:17,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:17,825 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:17,825 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:17,826 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534106159]
[2024-11-18 09:39:17,826 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534106159] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:17,826 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:17,826 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:17,826 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256562980]
[2024-11-18 09:39:17,826 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:17,827 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:17,827 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:17,828 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:17,828 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:17,832 INFO  L87              Difference]: Start difference. First operand 874 states and 1329 transitions. Second operand  has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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)
[2024-11-18 09:39:18,608 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:18,608 INFO  L93              Difference]: Finished difference Result 2575 states and 3935 transitions.
[2024-11-18 09:39:18,608 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:18,609 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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 180
[2024-11-18 09:39:18,609 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:18,615 INFO  L225             Difference]: With dead ends: 2575
[2024-11-18 09:39:18,615 INFO  L226             Difference]: Without dead ends: 1703
[2024-11-18 09:39:18,616 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:18,618 INFO  L432           NwaCegarLoop]: 76 mSDtfsCounter, 249 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:18,619 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 90 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-18 09:39:18,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1703 states.
[2024-11-18 09:39:18,682 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1687.
[2024-11-18 09:39:18,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1687 states, 1686 states have (on average 1.4994068801897984) internal successors, (2528), 1686 states have internal predecessors, (2528), 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)
[2024-11-18 09:39:18,694 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2528 transitions.
[2024-11-18 09:39:18,695 INFO  L78                 Accepts]: Start accepts. Automaton has 1687 states and 2528 transitions. Word has length 180
[2024-11-18 09:39:18,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:18,695 INFO  L471      AbstractCegarLoop]: Abstraction has 1687 states and 2528 transitions.
[2024-11-18 09:39:18,696 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 60.0) internal successors, (180), 2 states have internal predecessors, (180), 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)
[2024-11-18 09:39:18,697 INFO  L276                IsEmpty]: Start isEmpty. Operand 1687 states and 2528 transitions.
[2024-11-18 09:39:18,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 183
[2024-11-18 09:39:18,705 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:18,705 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:18,705 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-11-18 09:39:18,706 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:18,706 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:18,707 INFO  L85        PathProgramCache]: Analyzing trace with hash -2063767796, now seen corresponding path program 1 times
[2024-11-18 09:39:18,707 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:18,708 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732230546]
[2024-11-18 09:39:18,708 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:18,708 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:18,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:19,023 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:19,026 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:19,026 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732230546]
[2024-11-18 09:39:19,026 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732230546] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:19,026 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:19,026 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:19,026 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129740119]
[2024-11-18 09:39:19,027 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:19,027 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:19,027 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:19,028 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:19,028 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:19,028 INFO  L87              Difference]: Start difference. First operand 1687 states and 2528 transitions. Second operand  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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)
[2024-11-18 09:39:19,864 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:19,865 INFO  L93              Difference]: Finished difference Result 4194 states and 6266 transitions.
[2024-11-18 09:39:19,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:19,866 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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 182
[2024-11-18 09:39:19,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:19,877 INFO  L225             Difference]: With dead ends: 4194
[2024-11-18 09:39:19,877 INFO  L226             Difference]: Without dead ends: 2509
[2024-11-18 09:39:19,881 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:19,882 INFO  L432           NwaCegarLoop]: 96 mSDtfsCounter, 236 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:19,883 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 113 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:19,886 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2509 states.
[2024-11-18 09:39:19,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2509 to 2508.
[2024-11-18 09:39:19,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2508 states, 2507 states have (on average 1.4670921420023932) internal successors, (3678), 2507 states have internal predecessors, (3678), 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)
[2024-11-18 09:39:19,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2508 states to 2508 states and 3678 transitions.
[2024-11-18 09:39:19,937 INFO  L78                 Accepts]: Start accepts. Automaton has 2508 states and 3678 transitions. Word has length 182
[2024-11-18 09:39:19,938 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:19,938 INFO  L471      AbstractCegarLoop]: Abstraction has 2508 states and 3678 transitions.
[2024-11-18 09:39:19,938 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 2 states have internal predecessors, (182), 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)
[2024-11-18 09:39:19,938 INFO  L276                IsEmpty]: Start isEmpty. Operand 2508 states and 3678 transitions.
[2024-11-18 09:39:19,944 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 188
[2024-11-18 09:39:19,944 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:19,945 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:19,945 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-11-18 09:39:19,946 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:19,946 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:19,946 INFO  L85        PathProgramCache]: Analyzing trace with hash 158556796, now seen corresponding path program 1 times
[2024-11-18 09:39:19,946 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:19,947 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009017611]
[2024-11-18 09:39:19,947 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:19,947 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:20,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:20,213 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-18 09:39:20,213 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:20,214 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009017611]
[2024-11-18 09:39:20,215 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009017611] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:20,215 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:20,216 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:20,216 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297970964]
[2024-11-18 09:39:20,216 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:20,217 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:20,218 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:20,218 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:20,218 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:20,219 INFO  L87              Difference]: Start difference. First operand 2508 states and 3678 transitions. Second operand  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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)
[2024-11-18 09:39:21,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:21,079 INFO  L93              Difference]: Finished difference Result 5011 states and 7350 transitions.
[2024-11-18 09:39:21,079 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:21,080 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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 187
[2024-11-18 09:39:21,080 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:21,089 INFO  L225             Difference]: With dead ends: 5011
[2024-11-18 09:39:21,090 INFO  L226             Difference]: Without dead ends: 2505
[2024-11-18 09:39:21,093 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:21,097 INFO  L432           NwaCegarLoop]: 360 mSDtfsCounter, 106 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:21,098 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 386 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:21,102 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2505 states.
[2024-11-18 09:39:21,135 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2096.
[2024-11-18 09:39:21,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2096 states, 2095 states have (on average 1.3761336515513127) internal successors, (2883), 2095 states have internal predecessors, (2883), 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)
[2024-11-18 09:39:21,144 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2883 transitions.
[2024-11-18 09:39:21,144 INFO  L78                 Accepts]: Start accepts. Automaton has 2096 states and 2883 transitions. Word has length 187
[2024-11-18 09:39:21,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:21,146 INFO  L471      AbstractCegarLoop]: Abstraction has 2096 states and 2883 transitions.
[2024-11-18 09:39:21,147 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 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)
[2024-11-18 09:39:21,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 2096 states and 2883 transitions.
[2024-11-18 09:39:21,152 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 190
[2024-11-18 09:39:21,153 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:21,153 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:21,153 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-11-18 09:39:21,153 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:21,154 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:21,154 INFO  L85        PathProgramCache]: Analyzing trace with hash 819933047, now seen corresponding path program 1 times
[2024-11-18 09:39:21,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:21,155 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086015155]
[2024-11-18 09:39:21,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:21,155 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:21,205 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:21,583 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-18 09:39:21,583 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:21,583 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086015155]
[2024-11-18 09:39:21,583 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086015155] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:21,583 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:21,583 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:21,583 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423482443]
[2024-11-18 09:39:21,584 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:21,584 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:21,584 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:21,585 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:21,585 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:21,588 INFO  L87              Difference]: Start difference. First operand 2096 states and 2883 transitions. Second operand  has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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)
[2024-11-18 09:39:22,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:22,401 INFO  L93              Difference]: Finished difference Result 6220 states and 8560 transitions.
[2024-11-18 09:39:22,402 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:22,402 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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 189
[2024-11-18 09:39:22,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:22,416 INFO  L225             Difference]: With dead ends: 6220
[2024-11-18 09:39:22,416 INFO  L226             Difference]: Without dead ends: 4126
[2024-11-18 09:39:22,421 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:22,422 INFO  L432           NwaCegarLoop]: 171 mSDtfsCounter, 205 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:22,422 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 199 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:22,427 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4126 states.
[2024-11-18 09:39:22,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4126 to 4126.
[2024-11-18 09:39:22,485 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 4126 states, 4125 states have (on average 1.2334545454545454) internal successors, (5088), 4125 states have internal predecessors, (5088), 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)
[2024-11-18 09:39:22,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 5088 transitions.
[2024-11-18 09:39:22,493 INFO  L78                 Accepts]: Start accepts. Automaton has 4126 states and 5088 transitions. Word has length 189
[2024-11-18 09:39:22,494 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:22,494 INFO  L471      AbstractCegarLoop]: Abstraction has 4126 states and 5088 transitions.
[2024-11-18 09:39:22,494 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 states have internal predecessors, (184), 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)
[2024-11-18 09:39:22,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 4126 states and 5088 transitions.
[2024-11-18 09:39:22,501 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 194
[2024-11-18 09:39:22,501 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:22,501 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:22,502 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-11-18 09:39:22,502 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:22,502 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:22,502 INFO  L85        PathProgramCache]: Analyzing trace with hash -975872118, now seen corresponding path program 1 times
[2024-11-18 09:39:22,503 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:22,503 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103994225]
[2024-11-18 09:39:22,503 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:22,503 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:22,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:22,783 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-18 09:39:22,784 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:22,784 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103994225]
[2024-11-18 09:39:22,784 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103994225] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:22,784 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:22,784 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:22,784 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807127588]
[2024-11-18 09:39:22,784 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:22,785 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:22,785 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:22,785 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:22,785 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:22,786 INFO  L87              Difference]: Start difference. First operand 4126 states and 5088 transitions. Second operand  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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)
[2024-11-18 09:39:23,638 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:23,638 INFO  L93              Difference]: Finished difference Result 10294 states and 12765 transitions.
[2024-11-18 09:39:23,639 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:23,639 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 193
[2024-11-18 09:39:23,639 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:23,659 INFO  L225             Difference]: With dead ends: 10294
[2024-11-18 09:39:23,659 INFO  L226             Difference]: Without dead ends: 6170
[2024-11-18 09:39:23,665 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:23,666 INFO  L432           NwaCegarLoop]: 337 mSDtfsCounter, 218 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:23,667 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 359 Invalid, 741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:23,673 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6170 states.
[2024-11-18 09:39:23,781 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6170 to 6166.
[2024-11-18 09:39:23,790 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6166 states, 6165 states have (on average 1.2047039740470398) internal successors, (7427), 6165 states have internal predecessors, (7427), 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)
[2024-11-18 09:39:23,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6166 states to 6166 states and 7427 transitions.
[2024-11-18 09:39:23,803 INFO  L78                 Accepts]: Start accepts. Automaton has 6166 states and 7427 transitions. Word has length 193
[2024-11-18 09:39:23,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:23,803 INFO  L471      AbstractCegarLoop]: Abstraction has 6166 states and 7427 transitions.
[2024-11-18 09:39:23,804 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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)
[2024-11-18 09:39:23,804 INFO  L276                IsEmpty]: Start isEmpty. Operand 6166 states and 7427 transitions.
[2024-11-18 09:39:23,813 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 202
[2024-11-18 09:39:23,813 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:23,813 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:23,813 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-11-18 09:39:23,814 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:23,814 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:23,814 INFO  L85        PathProgramCache]: Analyzing trace with hash 1218419532, now seen corresponding path program 1 times
[2024-11-18 09:39:23,815 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:23,815 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392473684]
[2024-11-18 09:39:23,815 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:23,815 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:23,863 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:23,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-11-18 09:39:23,969 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:23,969 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392473684]
[2024-11-18 09:39:23,969 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392473684] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:23,969 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:23,969 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:23,970 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18503055]
[2024-11-18 09:39:23,971 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:23,971 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:23,971 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:23,972 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:23,972 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:23,972 INFO  L87              Difference]: Start difference. First operand 6166 states and 7427 transitions. Second operand  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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)
[2024-11-18 09:39:24,327 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:24,328 INFO  L93              Difference]: Finished difference Result 18464 states and 22238 transitions.
[2024-11-18 09:39:24,328 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:24,328 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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 201
[2024-11-18 09:39:24,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:24,366 INFO  L225             Difference]: With dead ends: 18464
[2024-11-18 09:39:24,366 INFO  L226             Difference]: Without dead ends: 12300
[2024-11-18 09:39:24,376 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:24,377 INFO  L432           NwaCegarLoop]: 289 mSDtfsCounter, 353 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:24,377 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 544 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-18 09:39:24,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12300 states.
[2024-11-18 09:39:24,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12300 to 12298.
[2024-11-18 09:39:24,634 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 12298 states, 12297 states have (on average 1.2033829389281938) internal successors, (14798), 12297 states have internal predecessors, (14798), 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)
[2024-11-18 09:39:24,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12298 states to 12298 states and 14798 transitions.
[2024-11-18 09:39:24,664 INFO  L78                 Accepts]: Start accepts. Automaton has 12298 states and 14798 transitions. Word has length 201
[2024-11-18 09:39:24,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:24,665 INFO  L471      AbstractCegarLoop]: Abstraction has 12298 states and 14798 transitions.
[2024-11-18 09:39:24,665 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 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)
[2024-11-18 09:39:24,666 INFO  L276                IsEmpty]: Start isEmpty. Operand 12298 states and 14798 transitions.
[2024-11-18 09:39:24,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 203
[2024-11-18 09:39:24,683 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:24,683 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:24,684 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-11-18 09:39:24,684 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:24,684 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:24,684 INFO  L85        PathProgramCache]: Analyzing trace with hash 1645874258, now seen corresponding path program 1 times
[2024-11-18 09:39:24,685 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:24,685 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95994922]
[2024-11-18 09:39:24,685 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:24,685 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:24,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:24,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2024-11-18 09:39:24,953 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:24,953 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95994922]
[2024-11-18 09:39:24,953 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95994922] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:24,953 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:24,953 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:24,954 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176405296]
[2024-11-18 09:39:24,954 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:24,954 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:24,954 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:24,955 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:24,955 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:24,955 INFO  L87              Difference]: Start difference. First operand 12298 states and 14798 transitions. Second operand  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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)
[2024-11-18 09:39:25,861 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:25,863 INFO  L93              Difference]: Finished difference Result 31097 states and 38149 transitions.
[2024-11-18 09:39:25,864 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:25,866 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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 202
[2024-11-18 09:39:25,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:25,911 INFO  L225             Difference]: With dead ends: 31097
[2024-11-18 09:39:25,911 INFO  L226             Difference]: Without dead ends: 18801
[2024-11-18 09:39:25,925 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:25,927 INFO  L432           NwaCegarLoop]: 374 mSDtfsCounter, 236 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 526 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:25,928 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 402 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 526 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-18 09:39:25,946 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18801 states.
[2024-11-18 09:39:26,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18801 to 18187.
[2024-11-18 09:39:26,168 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 18187 states, 18186 states have (on average 1.1702408446057406) internal successors, (21282), 18186 states have internal predecessors, (21282), 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)
[2024-11-18 09:39:26,199 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18187 states to 18187 states and 21282 transitions.
[2024-11-18 09:39:26,200 INFO  L78                 Accepts]: Start accepts. Automaton has 18187 states and 21282 transitions. Word has length 202
[2024-11-18 09:39:26,200 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:26,200 INFO  L471      AbstractCegarLoop]: Abstraction has 18187 states and 21282 transitions.
[2024-11-18 09:39:26,201 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 62.666666666666664) internal successors, (188), 3 states have internal predecessors, (188), 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)
[2024-11-18 09:39:26,201 INFO  L276                IsEmpty]: Start isEmpty. Operand 18187 states and 21282 transitions.
[2024-11-18 09:39:26,220 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 213
[2024-11-18 09:39:26,220 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:26,222 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:26,222 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-11-18 09:39:26,222 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:26,226 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:26,226 INFO  L85        PathProgramCache]: Analyzing trace with hash -957763539, now seen corresponding path program 1 times
[2024-11-18 09:39:26,227 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:26,227 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141224297]
[2024-11-18 09:39:26,227 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:26,227 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:26,273 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:26,499 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2024-11-18 09:39:26,499 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:26,499 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141224297]
[2024-11-18 09:39:26,500 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141224297] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:26,500 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:26,500 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2024-11-18 09:39:26,500 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18131499]
[2024-11-18 09:39:26,500 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:26,501 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:26,501 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:26,501 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:26,504 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:26,504 INFO  L87              Difference]: Start difference. First operand 18187 states and 21282 transitions. Second operand  has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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)
[2024-11-18 09:39:27,412 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:27,412 INFO  L93              Difference]: Finished difference Result 46191 states and 53976 transitions.
[2024-11-18 09:39:27,412 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:27,413 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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 212
[2024-11-18 09:39:27,413 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:27,470 INFO  L225             Difference]: With dead ends: 46191
[2024-11-18 09:39:27,470 INFO  L226             Difference]: Without dead ends: 28006
[2024-11-18 09:39:27,497 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:27,498 INFO  L432           NwaCegarLoop]: 208 mSDtfsCounter, 220 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:27,499 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 229 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time]
[2024-11-18 09:39:27,530 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28006 states.
[2024-11-18 09:39:27,872 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28006 to 28000.
[2024-11-18 09:39:27,910 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 28000 states, 27999 states have (on average 1.1655059109253902) internal successors, (32633), 27999 states have internal predecessors, (32633), 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)
[2024-11-18 09:39:27,956 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28000 states to 28000 states and 32633 transitions.
[2024-11-18 09:39:27,957 INFO  L78                 Accepts]: Start accepts. Automaton has 28000 states and 32633 transitions. Word has length 212
[2024-11-18 09:39:27,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:27,957 INFO  L471      AbstractCegarLoop]: Abstraction has 28000 states and 32633 transitions.
[2024-11-18 09:39:27,957 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 67.0) internal successors, (201), 2 states have internal predecessors, (201), 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)
[2024-11-18 09:39:27,958 INFO  L276                IsEmpty]: Start isEmpty. Operand 28000 states and 32633 transitions.
[2024-11-18 09:39:27,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 218
[2024-11-18 09:39:27,989 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:27,989 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:27,990 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-11-18 09:39:27,990 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:27,991 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:27,991 INFO  L85        PathProgramCache]: Analyzing trace with hash -1872331811, now seen corresponding path program 1 times
[2024-11-18 09:39:27,991 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:27,991 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202806843]
[2024-11-18 09:39:27,992 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:27,992 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:28,041 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:28,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 66 backedges. 50 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2024-11-18 09:39:28,413 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:28,413 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202806843]
[2024-11-18 09:39:28,413 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202806843] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:28,413 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157182212]
[2024-11-18 09:39:28,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:28,414 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:28,414 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:28,416 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)
[2024-11-18 09:39:28,418 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-11-18 09:39:28,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:28,619 INFO  L255         TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:28,634 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:28,907 INFO  L134       CoverageAnalysis]: Checked inductivity of 66 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2024-11-18 09:39:28,907 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:28,908 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [157182212] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:28,908 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:28,908 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:28,909 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100249518]
[2024-11-18 09:39:28,909 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:28,909 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:28,910 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:28,911 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:28,911 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:28,911 INFO  L87              Difference]: Start difference. First operand 28000 states and 32633 transitions. Second operand  has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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)
[2024-11-18 09:39:29,872 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:29,872 INFO  L93              Difference]: Finished difference Result 76140 states and 88795 transitions.
[2024-11-18 09:39:29,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:29,873 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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 217
[2024-11-18 09:39:29,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:29,941 INFO  L225             Difference]: With dead ends: 76140
[2024-11-18 09:39:29,941 INFO  L226             Difference]: Without dead ends: 48142
[2024-11-18 09:39:29,981 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:29,982 INFO  L432           NwaCegarLoop]: 170 mSDtfsCounter, 92 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:29,983 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 203 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-11-18 09:39:30,027 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48142 states.
[2024-11-18 09:39:30,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48142 to 46920.
[2024-11-18 09:39:30,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 46920 states, 46919 states have (on average 1.1478292376222852) internal successors, (53855), 46919 states have internal predecessors, (53855), 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)
[2024-11-18 09:39:30,682 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46920 states to 46920 states and 53855 transitions.
[2024-11-18 09:39:30,683 INFO  L78                 Accepts]: Start accepts. Automaton has 46920 states and 53855 transitions. Word has length 217
[2024-11-18 09:39:30,684 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:30,684 INFO  L471      AbstractCegarLoop]: Abstraction has 46920 states and 53855 transitions.
[2024-11-18 09:39:30,684 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 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)
[2024-11-18 09:39:30,685 INFO  L276                IsEmpty]: Start isEmpty. Operand 46920 states and 53855 transitions.
[2024-11-18 09:39:30,719 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 244
[2024-11-18 09:39:30,720 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:30,720 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:30,738 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-11-18 09:39:30,920 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10
[2024-11-18 09:39:30,921 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:30,922 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:30,922 INFO  L85        PathProgramCache]: Analyzing trace with hash 1916304460, now seen corresponding path program 1 times
[2024-11-18 09:39:30,922 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:30,922 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86584324]
[2024-11-18 09:39:30,923 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:30,923 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:30,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:31,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2024-11-18 09:39:31,503 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:31,503 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86584324]
[2024-11-18 09:39:31,504 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86584324] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:31,504 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821747078]
[2024-11-18 09:39:31,505 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:31,505 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:31,505 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:31,507 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)
[2024-11-18 09:39:31,509 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-11-18 09:39:31,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:31,683 INFO  L255         TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:31,692 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:31,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 130 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2024-11-18 09:39:31,744 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:31,744 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [821747078] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:31,744 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:31,745 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:31,745 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791113407]
[2024-11-18 09:39:31,745 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:31,745 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:31,746 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:31,746 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:31,747 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:31,747 INFO  L87              Difference]: Start difference. First operand 46920 states and 53855 transitions. Second operand  has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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)
[2024-11-18 09:39:32,280 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:32,281 INFO  L93              Difference]: Finished difference Result 131310 states and 150721 transitions.
[2024-11-18 09:39:32,281 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:32,281 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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 243
[2024-11-18 09:39:32,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:32,399 INFO  L225             Difference]: With dead ends: 131310
[2024-11-18 09:39:32,400 INFO  L226             Difference]: Without dead ends: 84392
[2024-11-18 09:39:32,452 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:32,453 INFO  L432           NwaCegarLoop]: 579 mSDtfsCounter, 312 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:32,453 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 849 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-11-18 09:39:32,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84392 states.
[2024-11-18 09:39:33,605 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84392 to 83571.
[2024-11-18 09:39:33,872 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 83571 states, 83570 states have (on average 1.134689481871485) internal successors, (94826), 83570 states have internal predecessors, (94826), 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)
[2024-11-18 09:39:34,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 83571 states to 83571 states and 94826 transitions.
[2024-11-18 09:39:34,241 INFO  L78                 Accepts]: Start accepts. Automaton has 83571 states and 94826 transitions. Word has length 243
[2024-11-18 09:39:34,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:34,242 INFO  L471      AbstractCegarLoop]: Abstraction has 83571 states and 94826 transitions.
[2024-11-18 09:39:34,242 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 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)
[2024-11-18 09:39:34,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 83571 states and 94826 transitions.
[2024-11-18 09:39:34,306 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2024-11-18 09:39:34,306 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:34,306 INFO  L215           NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:34,326 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2024-11-18 09:39:34,507 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,SelfDestructingSolverStorable11
[2024-11-18 09:39:34,508 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:34,508 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:34,508 INFO  L85        PathProgramCache]: Analyzing trace with hash -206882489, now seen corresponding path program 1 times
[2024-11-18 09:39:34,508 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:34,509 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378507059]
[2024-11-18 09:39:34,509 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:34,509 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:34,562 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:35,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 236 backedges. 116 proven. 6 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked.
[2024-11-18 09:39:35,115 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:35,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378507059]
[2024-11-18 09:39:35,115 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378507059] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:35,115 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130259135]
[2024-11-18 09:39:35,115 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:35,116 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:35,116 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:35,118 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)
[2024-11-18 09:39:35,121 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-11-18 09:39:35,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:35,347 INFO  L255         TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:35,354 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:35,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 236 backedges. 170 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2024-11-18 09:39:35,408 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:35,409 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130259135] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:35,409 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:35,409 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:35,409 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578704973]
[2024-11-18 09:39:35,409 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:35,410 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:35,410 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:35,411 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:35,411 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:35,411 INFO  L87              Difference]: Start difference. First operand 83571 states and 94826 transitions. Second operand  has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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)
[2024-11-18 09:39:36,726 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:36,726 INFO  L93              Difference]: Finished difference Result 165789 states and 187991 transitions.
[2024-11-18 09:39:36,726 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:36,727 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 272
[2024-11-18 09:39:36,727 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:36,837 INFO  L225             Difference]: With dead ends: 165789
[2024-11-18 09:39:36,837 INFO  L226             Difference]: Without dead ends: 82220
[2024-11-18 09:39:36,900 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:36,900 INFO  L432           NwaCegarLoop]: 364 mSDtfsCounter, 212 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 690 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 386 SdHoareTripleChecker+Invalid, 765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:36,901 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [212 Valid, 386 Invalid, 765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-18 09:39:36,988 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 82220 states.
[2024-11-18 09:39:37,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 82220 to 82150.
[2024-11-18 09:39:37,881 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 82150 states, 82149 states have (on average 1.1274756844270777) internal successors, (92621), 82149 states have internal predecessors, (92621), 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)
[2024-11-18 09:39:38,249 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82150 states to 82150 states and 92621 transitions.
[2024-11-18 09:39:38,251 INFO  L78                 Accepts]: Start accepts. Automaton has 82150 states and 92621 transitions. Word has length 272
[2024-11-18 09:39:38,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:38,251 INFO  L471      AbstractCegarLoop]: Abstraction has 82150 states and 92621 transitions.
[2024-11-18 09:39:38,251 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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)
[2024-11-18 09:39:38,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 82150 states and 92621 transitions.
[2024-11-18 09:39:38,322 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 275
[2024-11-18 09:39:38,323 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:38,323 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:38,342 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-11-18 09:39:38,524 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:38,525 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:38,525 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:38,525 INFO  L85        PathProgramCache]: Analyzing trace with hash 1435386261, now seen corresponding path program 1 times
[2024-11-18 09:39:38,525 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:38,525 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822295359]
[2024-11-18 09:39:38,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:38,526 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:38,602 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:38,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 102 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:38,959 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:38,960 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822295359]
[2024-11-18 09:39:38,960 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822295359] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:38,960 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:38,960 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:38,960 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508786000]
[2024-11-18 09:39:38,960 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:38,961 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:39:38,961 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:38,961 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:39:38,961 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:39:38,962 INFO  L87              Difference]: Start difference. First operand 82150 states and 92621 transitions. Second operand  has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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)
[2024-11-18 09:39:40,725 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:40,725 INFO  L93              Difference]: Finished difference Result 183494 states and 207152 transitions.
[2024-11-18 09:39:40,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:39:40,726 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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 274
[2024-11-18 09:39:40,726 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:40,859 INFO  L225             Difference]: With dead ends: 183494
[2024-11-18 09:39:40,860 INFO  L226             Difference]: Without dead ends: 101346
[2024-11-18 09:39:40,890 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:39:40,891 INFO  L432           NwaCegarLoop]: 134 mSDtfsCounter, 383 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 1429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:40,891 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [383 Valid, 165 Invalid, 1429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time]
[2024-11-18 09:39:40,957 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101346 states.
[2024-11-18 09:39:42,057 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101346 to 93161.
[2024-11-18 09:39:42,121 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 93161 states, 93160 states have (on average 1.1280699871189352) internal successors, (105091), 93160 states have internal predecessors, (105091), 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)
[2024-11-18 09:39:42,258 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 93161 states to 93161 states and 105091 transitions.
[2024-11-18 09:39:42,260 INFO  L78                 Accepts]: Start accepts. Automaton has 93161 states and 105091 transitions. Word has length 274
[2024-11-18 09:39:42,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:42,260 INFO  L471      AbstractCegarLoop]: Abstraction has 93161 states and 105091 transitions.
[2024-11-18 09:39:42,261 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 68.5) internal successors, (274), 3 states have internal predecessors, (274), 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)
[2024-11-18 09:39:42,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 93161 states and 105091 transitions.
[2024-11-18 09:39:42,311 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2024-11-18 09:39:42,311 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:42,312 INFO  L215           NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:42,312 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13
[2024-11-18 09:39:42,312 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:42,313 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:42,313 INFO  L85        PathProgramCache]: Analyzing trace with hash -2061083146, now seen corresponding path program 1 times
[2024-11-18 09:39:42,313 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:42,313 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898987375]
[2024-11-18 09:39:42,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:42,314 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:42,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:43,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 194 backedges. 98 proven. 6 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2024-11-18 09:39:43,099 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:43,099 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898987375]
[2024-11-18 09:39:43,099 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898987375] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:43,099 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63722817]
[2024-11-18 09:39:43,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:43,100 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:43,100 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:43,102 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)
[2024-11-18 09:39:43,103 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-11-18 09:39:43,283 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:43,286 INFO  L255         TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:43,292 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:43,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 194 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked.
[2024-11-18 09:39:43,512 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:43,512 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [63722817] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:43,512 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:43,513 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:43,513 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806872334]
[2024-11-18 09:39:43,513 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:43,514 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:43,514 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:43,514 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:43,514 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:43,515 INFO  L87              Difference]: Start difference. First operand 93161 states and 105091 transitions. Second operand  has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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)
[2024-11-18 09:39:44,852 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:44,853 INFO  L93              Difference]: Finished difference Result 203383 states and 231163 transitions.
[2024-11-18 09:39:44,853 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:44,854 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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 284
[2024-11-18 09:39:44,854 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:45,015 INFO  L225             Difference]: With dead ends: 203383
[2024-11-18 09:39:45,015 INFO  L226             Difference]: Without dead ends: 110224
[2024-11-18 09:39:45,045 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 283 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:45,045 INFO  L432           NwaCegarLoop]: 322 mSDtfsCounter, 98 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:45,046 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 343 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-18 09:39:45,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 110224 states.
[2024-11-18 09:39:46,159 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 110224 to 106964.
[2024-11-18 09:39:46,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 106964 states, 106963 states have (on average 1.136542542748427) internal successors, (121568), 106963 states have internal predecessors, (121568), 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)
[2024-11-18 09:39:46,371 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 106964 states to 106964 states and 121568 transitions.
[2024-11-18 09:39:46,373 INFO  L78                 Accepts]: Start accepts. Automaton has 106964 states and 121568 transitions. Word has length 284
[2024-11-18 09:39:46,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:46,374 INFO  L471      AbstractCegarLoop]: Abstraction has 106964 states and 121568 transitions.
[2024-11-18 09:39:46,374 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 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)
[2024-11-18 09:39:46,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 106964 states and 121568 transitions.
[2024-11-18 09:39:46,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 302
[2024-11-18 09:39:46,869 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:46,869 INFO  L215           NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:46,909 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2024-11-18 09:39:47,070 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14
[2024-11-18 09:39:47,071 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:47,071 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:47,071 INFO  L85        PathProgramCache]: Analyzing trace with hash -342102265, now seen corresponding path program 1 times
[2024-11-18 09:39:47,071 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:47,071 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474479950]
[2024-11-18 09:39:47,072 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:47,072 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:47,160 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:47,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 160 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-11-18 09:39:47,320 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:47,320 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474479950]
[2024-11-18 09:39:47,320 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474479950] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:47,320 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:39:47,320 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:39:47,321 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602115544]
[2024-11-18 09:39:47,321 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:47,321 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:47,322 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:47,322 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:47,323 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:47,323 INFO  L87              Difference]: Start difference. First operand 106964 states and 121568 transitions. Second operand  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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)
[2024-11-18 09:39:48,473 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:48,474 INFO  L93              Difference]: Finished difference Result 207793 states and 235824 transitions.
[2024-11-18 09:39:48,474 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:48,474 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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 301
[2024-11-18 09:39:48,475 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:48,615 INFO  L225             Difference]: With dead ends: 207793
[2024-11-18 09:39:48,615 INFO  L226             Difference]: Without dead ends: 100831
[2024-11-18 09:39:48,691 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:39:48,692 INFO  L432           NwaCegarLoop]: 347 mSDtfsCounter, 253 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:48,692 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 371 Invalid, 670 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-18 09:39:49,233 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 100831 states.
[2024-11-18 09:39:50,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 100831 to 95547.
[2024-11-18 09:39:50,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 95547 states, 95546 states have (on average 1.1103866200573547) internal successors, (106093), 95546 states have internal predecessors, (106093), 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)
[2024-11-18 09:39:50,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 95547 states to 95547 states and 106093 transitions.
[2024-11-18 09:39:50,402 INFO  L78                 Accepts]: Start accepts. Automaton has 95547 states and 106093 transitions. Word has length 301
[2024-11-18 09:39:50,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:50,402 INFO  L471      AbstractCegarLoop]: Abstraction has 95547 states and 106093 transitions.
[2024-11-18 09:39:50,403 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 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)
[2024-11-18 09:39:50,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 95547 states and 106093 transitions.
[2024-11-18 09:39:50,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 311
[2024-11-18 09:39:50,449 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:50,450 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:50,450 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15
[2024-11-18 09:39:50,450 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:50,450 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:50,450 INFO  L85        PathProgramCache]: Analyzing trace with hash -575817645, now seen corresponding path program 1 times
[2024-11-18 09:39:50,451 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:50,451 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846864205]
[2024-11-18 09:39:50,451 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:50,451 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:50,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:50,759 INFO  L134       CoverageAnalysis]: Checked inductivity of 242 backedges. 105 proven. 6 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked.
[2024-11-18 09:39:50,759 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:50,759 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846864205]
[2024-11-18 09:39:50,760 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846864205] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:50,760 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273804223]
[2024-11-18 09:39:50,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:50,760 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:50,760 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:50,763 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-18 09:39:50,764 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2024-11-18 09:39:51,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:51,201 INFO  L255         TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:51,205 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:51,263 INFO  L134       CoverageAnalysis]: Checked inductivity of 242 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2024-11-18 09:39:51,263 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:51,263 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273804223] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:51,263 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:51,264 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:51,264 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877427329]
[2024-11-18 09:39:51,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:51,264 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:51,264 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:51,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:51,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:51,265 INFO  L87              Difference]: Start difference. First operand 95547 states and 106093 transitions. Second operand  has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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)
[2024-11-18 09:39:52,376 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:52,377 INFO  L93              Difference]: Finished difference Result 236683 states and 263355 transitions.
[2024-11-18 09:39:52,377 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:52,377 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 310
[2024-11-18 09:39:52,377 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:52,574 INFO  L225             Difference]: With dead ends: 236683
[2024-11-18 09:39:52,574 INFO  L226             Difference]: Without dead ends: 141138
[2024-11-18 09:39:52,651 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 309 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:52,652 INFO  L432           NwaCegarLoop]: 114 mSDtfsCounter, 245 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:52,652 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 146 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-18 09:39:52,758 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 141138 states.
[2024-11-18 09:39:54,817 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 141138 to 135611.
[2024-11-18 09:39:54,909 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 135611 states, 135610 states have (on average 1.101482191578792) internal successors, (149372), 135610 states have internal predecessors, (149372), 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)
[2024-11-18 09:39:55,064 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 135611 states to 135611 states and 149372 transitions.
[2024-11-18 09:39:55,067 INFO  L78                 Accepts]: Start accepts. Automaton has 135611 states and 149372 transitions. Word has length 310
[2024-11-18 09:39:55,068 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:55,068 INFO  L471      AbstractCegarLoop]: Abstraction has 135611 states and 149372 transitions.
[2024-11-18 09:39:55,068 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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)
[2024-11-18 09:39:55,068 INFO  L276                IsEmpty]: Start isEmpty. Operand 135611 states and 149372 transitions.
[2024-11-18 09:39:55,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 324
[2024-11-18 09:39:55,121 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:55,121 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:55,135 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2024-11-18 09:39:55,321 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16
[2024-11-18 09:39:55,322 INFO  L396      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:39:55,322 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:39:55,322 INFO  L85        PathProgramCache]: Analyzing trace with hash 298805515, now seen corresponding path program 1 times
[2024-11-18 09:39:55,322 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:39:55,323 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423479066]
[2024-11-18 09:39:55,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:55,323 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:39:55,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:56,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 278 backedges. 117 proven. 6 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked.
[2024-11-18 09:39:56,174 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:39:56,174 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423479066]
[2024-11-18 09:39:56,175 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423479066] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:39:56,175 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547284443]
[2024-11-18 09:39:56,175 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:39:56,175 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:39:56,175 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:39:56,177 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-18 09:39:56,178 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2024-11-18 09:39:56,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:39:56,345 INFO  L255         TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 2 conjuncts are in the unsatisfiable core
[2024-11-18 09:39:56,349 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:39:56,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 278 backedges. 216 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked.
[2024-11-18 09:39:56,426 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:39:56,426 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547284443] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:39:56,426 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:39:56,426 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2024-11-18 09:39:56,427 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719416443]
[2024-11-18 09:39:56,427 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:39:56,427 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:39:56,427 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:39:56,428 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:39:56,428 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:56,428 INFO  L87              Difference]: Start difference. First operand 135611 states and 149372 transitions. Second operand  has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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)
[2024-11-18 09:39:57,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:39:57,219 INFO  L93              Difference]: Finished difference Result 275896 states and 303535 transitions.
[2024-11-18 09:39:57,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:39:57,220 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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 323
[2024-11-18 09:39:57,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:39:57,426 INFO  L225             Difference]: With dead ends: 275896
[2024-11-18 09:39:57,426 INFO  L226             Difference]: Without dead ends: 136222
[2024-11-18 09:39:57,518 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:39:57,519 INFO  L432           NwaCegarLoop]: 628 mSDtfsCounter, 247 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 897 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time
[2024-11-18 09:39:57,519 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 897 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]
[2024-11-18 09:39:58,124 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 136222 states.
[2024-11-18 09:39:59,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 136222 to 128699.
[2024-11-18 09:39:59,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 128699 states, 128698 states have (on average 1.083847456836936) internal successors, (139489), 128698 states have internal predecessors, (139489), 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)
[2024-11-18 09:39:59,799 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 128699 states to 128699 states and 139489 transitions.
[2024-11-18 09:39:59,802 INFO  L78                 Accepts]: Start accepts. Automaton has 128699 states and 139489 transitions. Word has length 323
[2024-11-18 09:39:59,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:39:59,803 INFO  L471      AbstractCegarLoop]: Abstraction has 128699 states and 139489 transitions.
[2024-11-18 09:39:59,803 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 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)
[2024-11-18 09:39:59,803 INFO  L276                IsEmpty]: Start isEmpty. Operand 128699 states and 139489 transitions.
[2024-11-18 09:39:59,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 327
[2024-11-18 09:39:59,875 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:39:59,876 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:39:59,889 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2024-11-18 09:40:00,076 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2024-11-18 09:40:00,077 INFO  L396      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:40:00,077 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:40:00,078 INFO  L85        PathProgramCache]: Analyzing trace with hash 1742213714, now seen corresponding path program 1 times
[2024-11-18 09:40:00,078 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:40:00,078 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197455787]
[2024-11-18 09:40:00,078 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:40:00,078 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:40:00,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:40:00,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 187 backedges. 163 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2024-11-18 09:40:00,419 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:40:00,419 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197455787]
[2024-11-18 09:40:00,419 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197455787] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:40:00,419 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:40:00,419 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:40:00,419 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043900088]
[2024-11-18 09:40:00,419 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:40:00,420 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:40:00,420 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:40:00,421 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:40:00,421 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:40:00,421 INFO  L87              Difference]: Start difference. First operand 128699 states and 139489 transitions. Second operand  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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)
[2024-11-18 09:40:01,999 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:40:01,999 INFO  L93              Difference]: Finished difference Result 293781 states and 318253 transitions.
[2024-11-18 09:40:02,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-11-18 09:40:02,000 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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 326
[2024-11-18 09:40:02,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:40:02,214 INFO  L225             Difference]: With dead ends: 293781
[2024-11-18 09:40:02,214 INFO  L226             Difference]: Without dead ends: 165084
[2024-11-18 09:40:02,306 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-11-18 09:40:02,307 INFO  L432           NwaCegarLoop]: 182 mSDtfsCounter, 114 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-18 09:40:02,307 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 215 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-18 09:40:02,432 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 165084 states.
[2024-11-18 09:40:04,543 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 165084 to 155738.
[2024-11-18 09:40:04,643 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 155738 states, 155737 states have (on average 1.0855544925098082) internal successors, (169061), 155737 states have internal predecessors, (169061), 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)
[2024-11-18 09:40:04,820 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 155738 states to 155738 states and 169061 transitions.
[2024-11-18 09:40:04,824 INFO  L78                 Accepts]: Start accepts. Automaton has 155738 states and 169061 transitions. Word has length 326
[2024-11-18 09:40:04,824 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:40:04,824 INFO  L471      AbstractCegarLoop]: Abstraction has 155738 states and 169061 transitions.
[2024-11-18 09:40:04,824 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 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)
[2024-11-18 09:40:04,825 INFO  L276                IsEmpty]: Start isEmpty. Operand 155738 states and 169061 transitions.
[2024-11-18 09:40:04,892 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 359
[2024-11-18 09:40:04,892 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:40:04,892 INFO  L215           NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:40:04,893 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18
[2024-11-18 09:40:04,893 INFO  L396      AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:40:04,893 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:40:04,893 INFO  L85        PathProgramCache]: Analyzing trace with hash -206158405, now seen corresponding path program 1 times
[2024-11-18 09:40:04,893 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:40:04,893 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990574573]
[2024-11-18 09:40:04,894 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:40:04,894 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:40:04,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:40:06,040 INFO  L134       CoverageAnalysis]: Checked inductivity of 251 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked.
[2024-11-18 09:40:06,040 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:40:06,040 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990574573]
[2024-11-18 09:40:06,041 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990574573] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:40:06,041 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-11-18 09:40:06,041 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-11-18 09:40:06,041 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175403869]
[2024-11-18 09:40:06,042 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:40:06,043 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-11-18 09:40:06,043 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:40:06,044 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-11-18 09:40:06,044 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:40:06,045 INFO  L87              Difference]: Start difference. First operand 155738 states and 169061 transitions. Second operand  has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 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)
[2024-11-18 09:40:08,554 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-18 09:40:08,554 INFO  L93              Difference]: Finished difference Result 436679 states and 473397 transitions.
[2024-11-18 09:40:08,555 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-11-18 09:40:08,555 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 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 358
[2024-11-18 09:40:08,555 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-18 09:40:08,960 INFO  L225             Difference]: With dead ends: 436679
[2024-11-18 09:40:08,960 INFO  L226             Difference]: Without dead ends: 280941
[2024-11-18 09:40:09,037 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2024-11-18 09:40:09,038 INFO  L432           NwaCegarLoop]: 94 mSDtfsCounter, 571 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 884 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time
[2024-11-18 09:40:09,038 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 312 Invalid, 977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 884 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time]
[2024-11-18 09:40:09,226 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 280941 states.
[2024-11-18 09:40:12,756 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 280941 to 267893.
[2024-11-18 09:40:12,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 267893 states, 267892 states have (on average 1.0840599943260718) internal successors, (290411), 267892 states have internal predecessors, (290411), 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)
[2024-11-18 09:40:13,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 267893 states to 267893 states and 290411 transitions.
[2024-11-18 09:40:13,456 INFO  L78                 Accepts]: Start accepts. Automaton has 267893 states and 290411 transitions. Word has length 358
[2024-11-18 09:40:13,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-18 09:40:13,457 INFO  L471      AbstractCegarLoop]: Abstraction has 267893 states and 290411 transitions.
[2024-11-18 09:40:13,457 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 75.75) internal successors, (303), 3 states have internal predecessors, (303), 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)
[2024-11-18 09:40:13,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 267893 states and 290411 transitions.
[2024-11-18 09:40:13,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 367
[2024-11-18 09:40:13,599 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-18 09:40:13,599 INFO  L215           NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2024-11-18 09:40:13,599 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19
[2024-11-18 09:40:13,599 INFO  L396      AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-18 09:40:13,600 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-18 09:40:13,600 INFO  L85        PathProgramCache]: Analyzing trace with hash -1962122272, now seen corresponding path program 1 times
[2024-11-18 09:40:13,600 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-11-18 09:40:13,600 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845709137]
[2024-11-18 09:40:13,600 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:40:13,600 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-11-18 09:40:13,656 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:40:14,773 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 109 proven. 6 refuted. 0 times theorem prover too weak. 234 trivial. 0 not checked.
[2024-11-18 09:40:14,773 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-11-18 09:40:14,773 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845709137]
[2024-11-18 09:40:14,773 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845709137] provided 0 perfect and 1 imperfect interpolant sequences
[2024-11-18 09:40:14,773 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678946989]
[2024-11-18 09:40:14,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-18 09:40:14,773 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-11-18 09:40:14,774 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-18 09:40:14,779 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2024-11-18 09:40:14,791 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2024-11-18 09:40:14,980 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-18 09:40:14,982 INFO  L255         TraceCheckSpWp]: Trace formula consists of 680 conjuncts, 3 conjuncts are in the unsatisfiable core
[2024-11-18 09:40:14,985 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-18 09:40:15,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked.
[2024-11-18 09:40:15,104 INFO  L307         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2024-11-18 09:40:15,104 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678946989] provided 1 perfect and 0 imperfect interpolant sequences
[2024-11-18 09:40:15,104 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2024-11-18 09:40:15,105 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2024-11-18 09:40:15,105 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968040396]
[2024-11-18 09:40:15,105 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-11-18 09:40:15,105 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-11-18 09:40:15,105 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-11-18 09:40:15,106 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-11-18 09:40:15,106 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-11-18 09:40:15,106 INFO  L87              Difference]: Start difference. First operand 267893 states and 290411 transitions. Second operand  has 3 states, 3 states have (on average 84.0) internal successors, (252), 2 states have internal predecessors, (252), 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)