./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit


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


Checking for ERROR reachability
Using default analysis
Version 4a390ef5
Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-4a390ef-m
[2024-10-24 01:46:46,421 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-24 01:46:46,499 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2024-10-24 01:46:46,505 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-24 01:46:46,507 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-24 01:46:46,540 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-24 01:46:46,541 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-24 01:46:46,541 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-24 01:46:46,542 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-24 01:46:46,543 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-24 01:46:46,545 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-24 01:46:46,545 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-24 01:46:46,546 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-24 01:46:46,546 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-24 01:46:46,547 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-24 01:46:46,547 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-24 01:46:46,548 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-24 01:46:46,550 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-10-24 01:46:46,550 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-24 01:46:46,550 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-10-24 01:46:46,550 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-24 01:46:46,555 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-24 01:46:46,556 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-24 01:46:46,556 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-24 01:46:46,556 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-24 01:46:46,556 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-10-24 01:46:46,556 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-24 01:46:46,557 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-24 01:46:46,557 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-24 01:46:46,557 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-24 01:46:46,557 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-24 01:46:46,558 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-24 01:46:46,558 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 01:46:46,558 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-24 01:46:46,558 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-24 01:46:46,558 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-24 01:46:46,559 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-24 01:46:46,559 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-24 01:46:46,559 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-24 01:46:46,560 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-24 01:46:46,561 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-24 01:46:46,561 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-24 01:46:46,562 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 -> 17c1b3adab900925d0968acf284c9fae9bc7d0ec39197e53dc7bd6b93c5a8558
[2024-10-24 01:46:46,831 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-24 01:46:46,858 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-24 01:46:46,862 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-24 01:46:46,863 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-24 01:46:46,864 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-24 01:46:46,866 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c
[2024-10-24 01:46:48,348 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-24 01:46:48,564 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-24 01:46:48,564 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c
[2024-10-24 01:46:48,578 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04ac677e/0ee260784aab457dbc6f5118bf46a420/FLAG99e3c234e
[2024-10-24 01:46:48,590 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f04ac677e/0ee260784aab457dbc6f5118bf46a420
[2024-10-24 01:46:48,593 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-24 01:46:48,594 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-24 01:46:48,596 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-24 01:46:48,596 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-24 01:46:48,603 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-24 01:46:48,603 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:48" (1/1) ...
[2024-10-24 01:46:48,604 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e54db50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:48, skipping insertion in model container
[2024-10-24 01:46:48,605 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:46:48" (1/1) ...
[2024-10-24 01:46:48,642 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-24 01:46:48,944 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118]
[2024-10-24 01:46:48,975 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 01:46:48,997 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-24 01:46:49,037 WARN  L248   ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4105,4118]
[2024-10-24 01:46:49,055 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 01:46:49,083 INFO  L204         MainTranslator]: Completed translation
[2024-10-24 01:46:49,084 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49 WrapperNode
[2024-10-24 01:46:49,084 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-24 01:46:49,085 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-24 01:46:49,086 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-24 01:46:49,086 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-24 01:46:49,095 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,106 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,137 INFO  L138                Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 290
[2024-10-24 01:46:49,138 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-24 01:46:49,139 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-24 01:46:49,139 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-24 01:46:49,139 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-24 01:46:49,151 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,151 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,158 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,187 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].
[2024-10-24 01:46:49,187 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,188 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,193 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,196 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,198 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,200 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,205 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-24 01:46:49,206 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-24 01:46:49,206 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-24 01:46:49,206 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-24 01:46:49,207 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (1/1) ...
[2024-10-24 01:46:49,213 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 01:46:49,227 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 01:46:49,246 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null)
[2024-10-24 01:46:49,254 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process
[2024-10-24 01:46:49,301 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-24 01:46:49,301 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-24 01:46:49,302 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-24 01:46:49,303 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-24 01:46:49,433 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-24 01:46:49,435 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-24 01:46:49,827 INFO  L?                        ?]: Removed 29 outVars from TransFormulas that were not future-live.
[2024-10-24 01:46:49,828 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-24 01:46:49,873 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-24 01:46:49,874 INFO  L314             CfgBuilder]: Removed 0 assume(true) statements.
[2024-10-24 01:46:49,874 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:49 BoogieIcfgContainer
[2024-10-24 01:46:49,874 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-24 01:46:49,877 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-24 01:46:49,877 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-24 01:46:49,881 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-24 01:46:49,881 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:46:48" (1/3) ...
[2024-10-24 01:46:49,883 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d17f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:49, skipping insertion in model container
[2024-10-24 01:46:49,883 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:46:49" (2/3) ...
[2024-10-24 01:46:49,884 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a2d17f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:46:49, skipping insertion in model container
[2024-10-24 01:46:49,884 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:46:49" (3/3) ...
[2024-10-24 01:46:49,885 INFO  L112   eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c
[2024-10-24 01:46:49,904 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-24 01:46:49,905 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-24 01:46:49,962 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-24 01:46:49,969 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;@c5e7e24, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-24 01:46:49,970 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-24 01:46:49,974 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:49,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2024-10-24 01:46:49,981 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:49,982 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]
[2024-10-24 01:46:49,982 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:49,987 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:49,988 INFO  L85        PathProgramCache]: Analyzing trace with hash 358399884, now seen corresponding path program 1 times
[2024-10-24 01:46:49,997 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:49,997 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203763718]
[2024-10-24 01:46:49,998 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:49,998 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:50,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:50,372 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:50,373 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:50,373 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203763718]
[2024-10-24 01:46:50,374 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203763718] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:50,374 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:50,374 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:46:50,377 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646209646]
[2024-10-24 01:46:50,377 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:50,382 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:46:50,382 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:50,402 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:46:50,402 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:46:50,404 INFO  L87              Difference]: Start difference. First operand  has 62 states, 60 states have (on average 1.7166666666666666) internal successors, (103), 61 states have internal predecessors, (103), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,489 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:50,491 INFO  L93              Difference]: Finished difference Result 142 states and 226 transitions.
[2024-10-24 01:46:50,493 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:46:50,495 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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 36
[2024-10-24 01:46:50,495 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:50,503 INFO  L225             Difference]: With dead ends: 142
[2024-10-24 01:46:50,504 INFO  L226             Difference]: Without dead ends: 94
[2024-10-24 01:46:50,507 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
[2024-10-24 01:46:50,510 INFO  L432           NwaCegarLoop]: 130 mSDtfsCounter, 60 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:50,511 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 203 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-24 01:46:50,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2024-10-24 01:46:50,571 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92.
[2024-10-24 01:46:50,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 92 states, 91 states have (on average 1.4835164835164836) internal successors, (135), 91 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 135 transitions.
[2024-10-24 01:46:50,579 INFO  L78                 Accepts]: Start accepts. Automaton has 92 states and 135 transitions. Word has length 36
[2024-10-24 01:46:50,579 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:50,579 INFO  L471      AbstractCegarLoop]: Abstraction has 92 states and 135 transitions.
[2024-10-24 01:46:50,580 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 92 states and 135 transitions.
[2024-10-24 01:46:50,581 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2024-10-24 01:46:50,581 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:50,581 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]
[2024-10-24 01:46:50,581 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-24 01:46:50,582 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:50,583 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:50,584 INFO  L85        PathProgramCache]: Analyzing trace with hash 1160274850, now seen corresponding path program 1 times
[2024-10-24 01:46:50,584 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:50,584 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336910574]
[2024-10-24 01:46:50,585 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:50,585 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:50,632 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:50,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:50,752 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:50,753 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336910574]
[2024-10-24 01:46:50,753 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336910574] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:50,753 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:50,753 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:46:50,754 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134673794]
[2024-10-24 01:46:50,754 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:50,755 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:46:50,756 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:50,756 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:46:50,757 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:46:50,757 INFO  L87              Difference]: Start difference. First operand 92 states and 135 transitions. Second operand  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,784 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:50,785 INFO  L93              Difference]: Finished difference Result 224 states and 343 transitions.
[2024-10-24 01:46:50,785 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:46:50,785 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 37
[2024-10-24 01:46:50,786 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:50,787 INFO  L225             Difference]: With dead ends: 224
[2024-10-24 01:46:50,788 INFO  L226             Difference]: Without dead ends: 150
[2024-10-24 01:46:50,788 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
[2024-10-24 01:46:50,790 INFO  L432           NwaCegarLoop]: 105 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:50,790 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:50,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2024-10-24 01:46:50,810 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 148.
[2024-10-24 01:46:50,814 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 148 states, 147 states have (on average 1.5170068027210883) internal successors, (223), 147 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 223 transitions.
[2024-10-24 01:46:50,817 INFO  L78                 Accepts]: Start accepts. Automaton has 148 states and 223 transitions. Word has length 37
[2024-10-24 01:46:50,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:50,818 INFO  L471      AbstractCegarLoop]: Abstraction has 148 states and 223 transitions.
[2024-10-24 01:46:50,818 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:50,819 INFO  L276                IsEmpty]: Start isEmpty. Operand 148 states and 223 transitions.
[2024-10-24 01:46:50,819 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2024-10-24 01:46:50,820 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:50,820 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]
[2024-10-24 01:46:50,820 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-24 01:46:50,820 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:50,821 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:50,821 INFO  L85        PathProgramCache]: Analyzing trace with hash 1494588776, now seen corresponding path program 1 times
[2024-10-24 01:46:50,821 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:50,822 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375312785]
[2024-10-24 01:46:50,822 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:50,822 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:50,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:51,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:51,067 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:51,067 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375312785]
[2024-10-24 01:46:51,068 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375312785] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:51,068 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:51,068 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:51,069 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920919333]
[2024-10-24 01:46:51,069 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:51,070 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:51,070 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:51,071 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:51,071 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:51,073 INFO  L87              Difference]: Start difference. First operand 148 states and 223 transitions. Second operand  has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,262 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:51,262 INFO  L93              Difference]: Finished difference Result 928 states and 1453 transitions.
[2024-10-24 01:46:51,263 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2024-10-24 01:46:51,263 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38
[2024-10-24 01:46:51,263 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:51,272 INFO  L225             Difference]: With dead ends: 928
[2024-10-24 01:46:51,272 INFO  L226             Difference]: Without dead ends: 798
[2024-10-24 01:46:51,273 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2024-10-24 01:46:51,277 INFO  L432           NwaCegarLoop]: 79 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:51,278 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 573 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time]
[2024-10-24 01:46:51,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 798 states.
[2024-10-24 01:46:51,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 276.
[2024-10-24 01:46:51,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 276 states, 275 states have (on average 1.5236363636363637) internal successors, (419), 275 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 419 transitions.
[2024-10-24 01:46:51,310 INFO  L78                 Accepts]: Start accepts. Automaton has 276 states and 419 transitions. Word has length 38
[2024-10-24 01:46:51,311 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:51,311 INFO  L471      AbstractCegarLoop]: Abstraction has 276 states and 419 transitions.
[2024-10-24 01:46:51,311 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 276 states and 419 transitions.
[2024-10-24 01:46:51,312 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2024-10-24 01:46:51,313 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:51,313 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]
[2024-10-24 01:46:51,313 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-24 01:46:51,313 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:51,314 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:51,314 INFO  L85        PathProgramCache]: Analyzing trace with hash 858913764, now seen corresponding path program 1 times
[2024-10-24 01:46:51,314 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:51,314 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842450462]
[2024-10-24 01:46:51,314 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:51,315 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:51,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:51,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:51,391 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:51,392 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842450462]
[2024-10-24 01:46:51,392 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842450462] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:51,392 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:51,392 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:46:51,392 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905514310]
[2024-10-24 01:46:51,393 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:51,393 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:46:51,393 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:51,394 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:46:51,394 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:46:51,394 INFO  L87              Difference]: Start difference. First operand 276 states and 419 transitions. Second operand  has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,418 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:51,418 INFO  L93              Difference]: Finished difference Result 748 states and 1145 transitions.
[2024-10-24 01:46:51,419 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:46:51,419 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 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 40
[2024-10-24 01:46:51,419 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:51,421 INFO  L225             Difference]: With dead ends: 748
[2024-10-24 01:46:51,422 INFO  L226             Difference]: Without dead ends: 490
[2024-10-24 01:46:51,423 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
[2024-10-24 01:46:51,424 INFO  L432           NwaCegarLoop]: 80 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:51,424 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 139 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:51,425 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 490 states.
[2024-10-24 01:46:51,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 480.
[2024-10-24 01:46:51,441 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 480 states, 479 states have (on average 1.4926931106471817) internal successors, (715), 479 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,443 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions.
[2024-10-24 01:46:51,443 INFO  L78                 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 40
[2024-10-24 01:46:51,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:51,444 INFO  L471      AbstractCegarLoop]: Abstraction has 480 states and 715 transitions.
[2024-10-24 01:46:51,444 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,444 INFO  L276                IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions.
[2024-10-24 01:46:51,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2024-10-24 01:46:51,445 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:51,445 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]
[2024-10-24 01:46:51,445 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-10-24 01:46:51,446 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:51,446 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:51,446 INFO  L85        PathProgramCache]: Analyzing trace with hash 879916419, now seen corresponding path program 1 times
[2024-10-24 01:46:51,446 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:51,447 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379975523]
[2024-10-24 01:46:51,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:51,447 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:51,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:51,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:51,743 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:51,743 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379975523]
[2024-10-24 01:46:51,743 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379975523] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:51,743 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:51,743 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:51,743 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371314790]
[2024-10-24 01:46:51,744 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:51,744 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:51,744 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:51,744 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:51,745 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:51,745 INFO  L87              Difference]: Start difference. First operand 480 states and 715 transitions. Second operand  has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,821 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:51,821 INFO  L93              Difference]: Finished difference Result 944 states and 1413 transitions.
[2024-10-24 01:46:51,823 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:51,823 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 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 40
[2024-10-24 01:46:51,825 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:51,827 INFO  L225             Difference]: With dead ends: 944
[2024-10-24 01:46:51,827 INFO  L226             Difference]: Without dead ends: 482
[2024-10-24 01:46:51,830 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2024-10-24 01:46:51,832 INFO  L432           NwaCegarLoop]: 78 mSDtfsCounter, 130 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:51,832 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 202 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:51,833 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 482 states.
[2024-10-24 01:46:51,850 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 480.
[2024-10-24 01:46:51,855 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 480 states, 479 states have (on average 1.475991649269311) internal successors, (707), 479 states have internal predecessors, (707), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,857 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 707 transitions.
[2024-10-24 01:46:51,861 INFO  L78                 Accepts]: Start accepts. Automaton has 480 states and 707 transitions. Word has length 40
[2024-10-24 01:46:51,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:51,862 INFO  L471      AbstractCegarLoop]: Abstraction has 480 states and 707 transitions.
[2024-10-24 01:46:51,862 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:51,862 INFO  L276                IsEmpty]: Start isEmpty. Operand 480 states and 707 transitions.
[2024-10-24 01:46:51,866 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-10-24 01:46:51,866 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:51,866 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]
[2024-10-24 01:46:51,867 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-10-24 01:46:51,867 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:51,867 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:51,867 INFO  L85        PathProgramCache]: Analyzing trace with hash 1505695790, now seen corresponding path program 1 times
[2024-10-24 01:46:51,868 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:51,868 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247750820]
[2024-10-24 01:46:51,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:51,868 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:51,900 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:51,987 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:51,987 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:51,987 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247750820]
[2024-10-24 01:46:51,988 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247750820] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:51,988 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:51,988 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 01:46:51,988 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290055683]
[2024-10-24 01:46:51,988 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:51,989 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:51,989 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:51,990 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:51,990 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:51,990 INFO  L87              Difference]: Start difference. First operand 480 states and 707 transitions. Second operand  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,056 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:52,057 INFO  L93              Difference]: Finished difference Result 942 states and 1396 transitions.
[2024-10-24 01:46:52,058 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:52,058 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 41
[2024-10-24 01:46:52,058 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:52,060 INFO  L225             Difference]: With dead ends: 942
[2024-10-24 01:46:52,060 INFO  L226             Difference]: Without dead ends: 480
[2024-10-24 01:46:52,061 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-10-24 01:46:52,064 INFO  L432           NwaCegarLoop]: 50 mSDtfsCounter, 222 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:52,068 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 54 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:52,070 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 480 states.
[2024-10-24 01:46:52,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480.
[2024-10-24 01:46:52,082 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 480 states, 479 states have (on average 1.44258872651357) internal successors, (691), 479 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,083 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 691 transitions.
[2024-10-24 01:46:52,085 INFO  L78                 Accepts]: Start accepts. Automaton has 480 states and 691 transitions. Word has length 41
[2024-10-24 01:46:52,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:52,086 INFO  L471      AbstractCegarLoop]: Abstraction has 480 states and 691 transitions.
[2024-10-24 01:46:52,086 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,086 INFO  L276                IsEmpty]: Start isEmpty. Operand 480 states and 691 transitions.
[2024-10-24 01:46:52,087 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-10-24 01:46:52,087 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:52,087 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]
[2024-10-24 01:46:52,087 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2024-10-24 01:46:52,087 INFO  L396      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:52,088 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:52,088 INFO  L85        PathProgramCache]: Analyzing trace with hash 1633781097, now seen corresponding path program 1 times
[2024-10-24 01:46:52,088 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:52,088 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849937939]
[2024-10-24 01:46:52,088 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:52,088 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:52,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:52,196 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:52,198 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:52,198 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849937939]
[2024-10-24 01:46:52,199 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849937939] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:52,199 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:52,199 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 01:46:52,199 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435221100]
[2024-10-24 01:46:52,199 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:52,200 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:52,201 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:52,202 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:52,202 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:52,202 INFO  L87              Difference]: Start difference. First operand 480 states and 691 transitions. Second operand  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:52,270 INFO  L93              Difference]: Finished difference Result 942 states and 1364 transitions.
[2024-10-24 01:46:52,271 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:52,271 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 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 41
[2024-10-24 01:46:52,271 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:52,273 INFO  L225             Difference]: With dead ends: 942
[2024-10-24 01:46:52,273 INFO  L226             Difference]: Without dead ends: 480
[2024-10-24 01:46:52,275 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2024-10-24 01:46:52,277 INFO  L432           NwaCegarLoop]: 50 mSDtfsCounter, 206 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:52,278 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 62 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:52,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 480 states.
[2024-10-24 01:46:52,286 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 480 to 480.
[2024-10-24 01:46:52,287 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 480 states, 479 states have (on average 1.4258872651356993) internal successors, (683), 479 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,289 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 683 transitions.
[2024-10-24 01:46:52,289 INFO  L78                 Accepts]: Start accepts. Automaton has 480 states and 683 transitions. Word has length 41
[2024-10-24 01:46:52,289 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:52,290 INFO  L471      AbstractCegarLoop]: Abstraction has 480 states and 683 transitions.
[2024-10-24 01:46:52,290 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 4 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,290 INFO  L276                IsEmpty]: Start isEmpty. Operand 480 states and 683 transitions.
[2024-10-24 01:46:52,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-10-24 01:46:52,291 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:52,291 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]
[2024-10-24 01:46:52,291 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2024-10-24 01:46:52,292 INFO  L396      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:52,292 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:52,292 INFO  L85        PathProgramCache]: Analyzing trace with hash -1795653810, now seen corresponding path program 1 times
[2024-10-24 01:46:52,292 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:52,292 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58803377]
[2024-10-24 01:46:52,293 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:52,293 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:52,326 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:52,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:52,532 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:52,532 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58803377]
[2024-10-24 01:46:52,532 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58803377] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:52,533 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:52,533 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:52,533 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784260869]
[2024-10-24 01:46:52,533 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:52,533 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:52,533 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:52,534 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:52,534 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:52,534 INFO  L87              Difference]: Start difference. First operand 480 states and 683 transitions. Second operand  has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:52,561 INFO  L93              Difference]: Finished difference Result 498 states and 708 transitions.
[2024-10-24 01:46:52,561 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:52,561 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41
[2024-10-24 01:46:52,561 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:52,563 INFO  L225             Difference]: With dead ends: 498
[2024-10-24 01:46:52,563 INFO  L226             Difference]: Without dead ends: 496
[2024-10-24 01:46:52,563 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:52,564 INFO  L432           NwaCegarLoop]: 78 mSDtfsCounter, 0 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:52,564 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 304 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:52,565 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 496 states.
[2024-10-24 01:46:52,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 496.
[2024-10-24 01:46:52,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 496 states, 495 states have (on average 1.404040404040404) internal successors, (695), 495 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 496 states to 496 states and 695 transitions.
[2024-10-24 01:46:52,577 INFO  L78                 Accepts]: Start accepts. Automaton has 496 states and 695 transitions. Word has length 41
[2024-10-24 01:46:52,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:52,577 INFO  L471      AbstractCegarLoop]: Abstraction has 496 states and 695 transitions.
[2024-10-24 01:46:52,578 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 496 states and 695 transitions.
[2024-10-24 01:46:52,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2024-10-24 01:46:52,578 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:52,579 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]
[2024-10-24 01:46:52,579 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2024-10-24 01:46:52,579 INFO  L396      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:52,582 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:52,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -1846258053, now seen corresponding path program 1 times
[2024-10-24 01:46:52,583 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:52,583 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818896448]
[2024-10-24 01:46:52,583 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:52,583 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:52,601 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:52,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:52,637 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:52,637 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818896448]
[2024-10-24 01:46:52,637 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818896448] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:52,637 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:52,637 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:46:52,637 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980493748]
[2024-10-24 01:46:52,637 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:52,637 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:46:52,637 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:52,638 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:46:52,638 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:46:52,638 INFO  L87              Difference]: Start difference. First operand 496 states and 695 transitions. Second operand  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,654 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:52,655 INFO  L93              Difference]: Finished difference Result 967 states and 1381 transitions.
[2024-10-24 01:46:52,658 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:46:52,658 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41
[2024-10-24 01:46:52,658 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:52,661 INFO  L225             Difference]: With dead ends: 967
[2024-10-24 01:46:52,661 INFO  L226             Difference]: Without dead ends: 692
[2024-10-24 01:46:52,662 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
[2024-10-24 01:46:52,663 INFO  L432           NwaCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:52,664 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 182 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:52,665 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 692 states.
[2024-10-24 01:46:52,672 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 690.
[2024-10-24 01:46:52,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 690 states, 689 states have (on average 1.4063860667634251) internal successors, (969), 689 states have internal predecessors, (969), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 969 transitions.
[2024-10-24 01:46:52,676 INFO  L78                 Accepts]: Start accepts. Automaton has 690 states and 969 transitions. Word has length 41
[2024-10-24 01:46:52,676 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:52,676 INFO  L471      AbstractCegarLoop]: Abstraction has 690 states and 969 transitions.
[2024-10-24 01:46:52,676 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,676 INFO  L276                IsEmpty]: Start isEmpty. Operand 690 states and 969 transitions.
[2024-10-24 01:46:52,677 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-10-24 01:46:52,678 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:52,678 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:46:52,678 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2024-10-24 01:46:52,678 INFO  L396      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:52,679 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:52,679 INFO  L85        PathProgramCache]: Analyzing trace with hash 1413176550, now seen corresponding path program 1 times
[2024-10-24 01:46:52,679 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:52,679 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742214765]
[2024-10-24 01:46:52,679 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:52,679 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:52,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:52,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2024-10-24 01:46:52,811 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:52,811 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742214765]
[2024-10-24 01:46:52,811 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742214765] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:52,811 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:52,811 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:52,811 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103644740]
[2024-10-24 01:46:52,811 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:52,812 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:52,812 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:52,812 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:52,812 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:52,812 INFO  L87              Difference]: Start difference. First operand 690 states and 969 transitions. Second operand  has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:52,889 INFO  L93              Difference]: Finished difference Result 2834 states and 3999 transitions.
[2024-10-24 01:46:52,889 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:52,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 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 60
[2024-10-24 01:46:52,889 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:52,898 INFO  L225             Difference]: With dead ends: 2834
[2024-10-24 01:46:52,898 INFO  L226             Difference]: Without dead ends: 2164
[2024-10-24 01:46:52,900 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-10-24 01:46:52,901 INFO  L432           NwaCegarLoop]: 134 mSDtfsCounter, 225 mSDsluCounter, 198 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:52,902 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 332 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:52,904 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2164 states.
[2024-10-24 01:46:52,925 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 1358.
[2024-10-24 01:46:52,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 1358 states, 1357 states have (on average 1.4038319823139278) internal successors, (1905), 1357 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,931 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1358 states to 1358 states and 1905 transitions.
[2024-10-24 01:46:52,931 INFO  L78                 Accepts]: Start accepts. Automaton has 1358 states and 1905 transitions. Word has length 60
[2024-10-24 01:46:52,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:52,932 INFO  L471      AbstractCegarLoop]: Abstraction has 1358 states and 1905 transitions.
[2024-10-24 01:46:52,932 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:52,932 INFO  L276                IsEmpty]: Start isEmpty. Operand 1358 states and 1905 transitions.
[2024-10-24 01:46:52,933 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2024-10-24 01:46:52,933 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:52,933 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:46:52,933 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2024-10-24 01:46:52,933 INFO  L396      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:52,934 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:52,934 INFO  L85        PathProgramCache]: Analyzing trace with hash -1727844640, now seen corresponding path program 1 times
[2024-10-24 01:46:52,934 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:52,934 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811462707]
[2024-10-24 01:46:52,934 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:52,934 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:52,957 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:53,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2024-10-24 01:46:53,045 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:53,045 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811462707]
[2024-10-24 01:46:53,045 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811462707] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:53,045 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:53,045 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:53,046 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579611323]
[2024-10-24 01:46:53,046 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:53,046 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:53,046 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:53,047 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:53,047 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:53,047 INFO  L87              Difference]: Start difference. First operand 1358 states and 1905 transitions. Second operand  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,124 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:53,124 INFO  L93              Difference]: Finished difference Result 3502 states and 4935 transitions.
[2024-10-24 01:46:53,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:53,125 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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 60
[2024-10-24 01:46:53,125 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:53,135 INFO  L225             Difference]: With dead ends: 3502
[2024-10-24 01:46:53,135 INFO  L226             Difference]: Without dead ends: 2832
[2024-10-24 01:46:53,137 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-10-24 01:46:53,138 INFO  L432           NwaCegarLoop]: 137 mSDtfsCounter, 215 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:53,138 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 377 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:53,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2832 states.
[2024-10-24 01:46:53,175 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2832 to 2362.
[2024-10-24 01:46:53,178 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2362 states, 2361 states have (on average 1.3972892842016096) internal successors, (3299), 2361 states have internal predecessors, (3299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,185 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3299 transitions.
[2024-10-24 01:46:53,185 INFO  L78                 Accepts]: Start accepts. Automaton has 2362 states and 3299 transitions. Word has length 60
[2024-10-24 01:46:53,185 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:53,185 INFO  L471      AbstractCegarLoop]: Abstraction has 2362 states and 3299 transitions.
[2024-10-24 01:46:53,186 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,186 INFO  L276                IsEmpty]: Start isEmpty. Operand 2362 states and 3299 transitions.
[2024-10-24 01:46:53,186 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2024-10-24 01:46:53,187 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:53,187 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:46:53,187 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2024-10-24 01:46:53,187 INFO  L396      AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:53,187 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:53,187 INFO  L85        PathProgramCache]: Analyzing trace with hash -996358177, now seen corresponding path program 1 times
[2024-10-24 01:46:53,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:53,188 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188931165]
[2024-10-24 01:46:53,188 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:53,188 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:53,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:53,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-24 01:46:53,303 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:53,303 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188931165]
[2024-10-24 01:46:53,303 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188931165] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:53,303 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:53,303 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2024-10-24 01:46:53,303 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478611361]
[2024-10-24 01:46:53,304 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:53,304 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 01:46:53,304 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:53,304 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 01:46:53,304 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2024-10-24 01:46:53,304 INFO  L87              Difference]: Start difference. First operand 2362 states and 3299 transitions. Second operand  has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,375 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:53,375 INFO  L93              Difference]: Finished difference Result 3762 states and 5319 transitions.
[2024-10-24 01:46:53,376 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 01:46:53,376 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 61
[2024-10-24 01:46:53,376 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:53,387 INFO  L225             Difference]: With dead ends: 3762
[2024-10-24 01:46:53,388 INFO  L226             Difference]: Without dead ends: 3296
[2024-10-24 01:46:53,390 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2024-10-24 01:46:53,391 INFO  L432           NwaCegarLoop]: 136 mSDtfsCounter, 211 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:53,391 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 341 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:53,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3296 states.
[2024-10-24 01:46:53,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3296 to 2826.
[2024-10-24 01:46:53,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2826 states, 2825 states have (on average 1.4028318584070796) internal successors, (3963), 2825 states have internal predecessors, (3963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 3963 transitions.
[2024-10-24 01:46:53,455 INFO  L78                 Accepts]: Start accepts. Automaton has 2826 states and 3963 transitions. Word has length 61
[2024-10-24 01:46:53,455 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:53,455 INFO  L471      AbstractCegarLoop]: Abstraction has 2826 states and 3963 transitions.
[2024-10-24 01:46:53,456 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 2826 states and 3963 transitions.
[2024-10-24 01:46:53,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2024-10-24 01:46:53,457 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:53,457 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:46:53,457 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11
[2024-10-24 01:46:53,458 INFO  L396      AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:53,458 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:53,458 INFO  L85        PathProgramCache]: Analyzing trace with hash -47821439, now seen corresponding path program 1 times
[2024-10-24 01:46:53,458 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:53,458 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119438525]
[2024-10-24 01:46:53,459 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:53,459 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:53,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:53,555 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:53,556 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:53,556 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119438525]
[2024-10-24 01:46:53,556 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119438525] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:46:53,556 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:46:53,556 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:46:53,557 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865136090]
[2024-10-24 01:46:53,557 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:46:53,557 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:46:53,557 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:53,558 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:46:53,558 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:46:53,558 INFO  L87              Difference]: Start difference. First operand 2826 states and 3963 transitions. Second operand  has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,587 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:53,588 INFO  L93              Difference]: Finished difference Result 4944 states and 6984 transitions.
[2024-10-24 01:46:53,588 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:46:53,588 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 62
[2024-10-24 01:46:53,589 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:53,595 INFO  L225             Difference]: With dead ends: 4944
[2024-10-24 01:46:53,596 INFO  L226             Difference]: Without dead ends: 2138
[2024-10-24 01:46:53,599 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
[2024-10-24 01:46:53,600 INFO  L432           NwaCegarLoop]: 105 mSDtfsCounter, 39 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:53,600 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 172 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:46:53,603 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2138 states.
[2024-10-24 01:46:53,634 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2138 to 2136.
[2024-10-24 01:46:53,638 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 2136 states, 2135 states have (on average 1.4065573770491804) internal successors, (3003), 2135 states have internal predecessors, (3003), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,644 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3003 transitions.
[2024-10-24 01:46:53,645 INFO  L78                 Accepts]: Start accepts. Automaton has 2136 states and 3003 transitions. Word has length 62
[2024-10-24 01:46:53,645 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:53,645 INFO  L471      AbstractCegarLoop]: Abstraction has 2136 states and 3003 transitions.
[2024-10-24 01:46:53,646 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:53,646 INFO  L276                IsEmpty]: Start isEmpty. Operand 2136 states and 3003 transitions.
[2024-10-24 01:46:53,646 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2024-10-24 01:46:53,647 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:53,647 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]
[2024-10-24 01:46:53,647 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12
[2024-10-24 01:46:53,647 INFO  L396      AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:53,648 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:53,648 INFO  L85        PathProgramCache]: Analyzing trace with hash -1761938601, now seen corresponding path program 1 times
[2024-10-24 01:46:53,648 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:53,648 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696748667]
[2024-10-24 01:46:53,648 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:53,648 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:53,677 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:53,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:53,966 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:53,966 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696748667]
[2024-10-24 01:46:53,966 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696748667] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 01:46:53,966 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975071937]
[2024-10-24 01:46:53,966 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:53,967 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 01:46:53,967 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 01:46:53,969 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)
[2024-10-24 01:46:53,970 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2024-10-24 01:46:54,091 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:54,095 INFO  L255         TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 11 conjuncts are in the unsatisfiable core
[2024-10-24 01:46:54,103 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 01:46:54,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-24 01:46:54,345 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-24 01:46:54,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2024-10-24 01:46:54,572 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [975071937] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-24 01:46:54,572 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-24 01:46:54,572 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 14
[2024-10-24 01:46:54,573 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314672568]
[2024-10-24 01:46:54,573 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-24 01:46:54,573 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-10-24 01:46:54,573 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:46:54,574 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-10-24 01:46:54,574 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182
[2024-10-24 01:46:54,575 INFO  L87              Difference]: Start difference. First operand 2136 states and 3003 transitions. Second operand  has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:56,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:46:56,201 INFO  L93              Difference]: Finished difference Result 13883 states and 19234 transitions.
[2024-10-24 01:46:56,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. 
[2024-10-24 01:46:56,202 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 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 62
[2024-10-24 01:46:56,202 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:46:56,236 INFO  L225             Difference]: With dead ends: 13883
[2024-10-24 01:46:56,236 INFO  L226             Difference]: Without dead ends: 11781
[2024-10-24 01:46:56,241 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=455, Invalid=1995, Unknown=0, NotChecked=0, Total=2450
[2024-10-24 01:46:56,242 INFO  L432           NwaCegarLoop]: 77 mSDtfsCounter, 1053 mSDsluCounter, 633 mSDsCounter, 0 mSdLazyCounter, 899 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 710 SdHoareTripleChecker+Invalid, 932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 899 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time
[2024-10-24 01:46:56,242 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [1053 Valid, 710 Invalid, 932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 899 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time]
[2024-10-24 01:46:56,251 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11781 states.
[2024-10-24 01:46:56,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11781 to 9821.
[2024-10-24 01:46:56,397 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 9821 states, 9820 states have (on average 1.3268839103869654) internal successors, (13030), 9820 states have internal predecessors, (13030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:56,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 9821 states to 9821 states and 13030 transitions.
[2024-10-24 01:46:56,419 INFO  L78                 Accepts]: Start accepts. Automaton has 9821 states and 13030 transitions. Word has length 62
[2024-10-24 01:46:56,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:46:56,420 INFO  L471      AbstractCegarLoop]: Abstraction has 9821 states and 13030 transitions.
[2024-10-24 01:46:56,420 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 12.357142857142858) internal successors, (173), 14 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:46:56,420 INFO  L276                IsEmpty]: Start isEmpty. Operand 9821 states and 13030 transitions.
[2024-10-24 01:46:56,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2024-10-24 01:46:56,421 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:46:56,421 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:46:56,439 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0
[2024-10-24 01:46:56,622 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,SelfDestructingSolverStorable13
[2024-10-24 01:46:56,623 INFO  L396      AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:46:56,623 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:46:56,623 INFO  L85        PathProgramCache]: Analyzing trace with hash 1584133295, now seen corresponding path program 1 times
[2024-10-24 01:46:56,624 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:46:56,624 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69984682]
[2024-10-24 01:46:56,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:56,624 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:46:56,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:56,883 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:56,883 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:46:56,883 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69984682]
[2024-10-24 01:46:56,884 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69984682] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 01:46:56,884 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682383417]
[2024-10-24 01:46:56,884 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:46:56,884 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 01:46:56,884 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 01:46:56,886 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)
[2024-10-24 01:46:56,887 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2024-10-24 01:46:57,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:46:57,009 INFO  L255         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 32 conjuncts are in the unsatisfiable core
[2024-10-24 01:46:57,011 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 01:46:58,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:46:58,768 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-24 01:47:00,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:00,031 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682383417] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-24 01:47:00,031 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-24 01:47:00,031 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 15] total 36
[2024-10-24 01:47:00,031 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186924628]
[2024-10-24 01:47:00,031 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-24 01:47:00,032 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 36 states
[2024-10-24 01:47:00,032 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:47:00,032 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2024-10-24 01:47:00,033 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260
[2024-10-24 01:47:00,033 INFO  L87              Difference]: Start difference. First operand 9821 states and 13030 transitions. Second operand  has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:44,630 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:47:44,630 INFO  L93              Difference]: Finished difference Result 141620 states and 185793 transitions.
[2024-10-24 01:47:44,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 622 states. 
[2024-10-24 01:47:44,631 INFO  L78                 Accepts]: Start accepts. Automaton has  has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 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 63
[2024-10-24 01:47:44,631 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:47:44,922 INFO  L225             Difference]: With dead ends: 141620
[2024-10-24 01:47:44,922 INFO  L226             Difference]: Without dead ends: 132632
[2024-10-24 01:47:45,016 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 751 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 653 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214556 ImplicationChecksByTransitivity, 41.7s TimeCoverageRelationStatistics Valid=49628, Invalid=378742, Unknown=0, NotChecked=0, Total=428370
[2024-10-24 01:47:45,017 INFO  L432           NwaCegarLoop]: 76 mSDtfsCounter, 18006 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 3614 mSolverCounterSat, 508 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18006 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 4122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 508 IncrementalHoareTripleChecker+Valid, 3614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time
[2024-10-24 01:47:45,017 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [18006 Valid, 1912 Invalid, 4122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [508 Valid, 3614 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time]
[2024-10-24 01:47:45,095 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 132632 states.
[2024-10-24 01:47:46,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 132632 to 71979.
[2024-10-24 01:47:46,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71979 states, 71978 states have (on average 1.3274611686904332) internal successors, (95548), 71978 states have internal predecessors, (95548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:46,977 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71979 states to 71979 states and 95548 transitions.
[2024-10-24 01:47:46,978 INFO  L78                 Accepts]: Start accepts. Automaton has 71979 states and 95548 transitions. Word has length 63
[2024-10-24 01:47:46,978 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:47:46,978 INFO  L471      AbstractCegarLoop]: Abstraction has 71979 states and 95548 transitions.
[2024-10-24 01:47:46,979 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 36 states, 36 states have (on average 4.75) internal successors, (171), 36 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:46,979 INFO  L276                IsEmpty]: Start isEmpty. Operand 71979 states and 95548 transitions.
[2024-10-24 01:47:46,981 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-10-24 01:47:46,981 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:47:46,982 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:47:47,000 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2024-10-24 01:47:47,182 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,SelfDestructingSolverStorable14
[2024-10-24 01:47:47,183 INFO  L396      AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:47:47,183 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:47:47,184 INFO  L85        PathProgramCache]: Analyzing trace with hash 1258595794, now seen corresponding path program 1 times
[2024-10-24 01:47:47,184 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:47:47,184 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599495035]
[2024-10-24 01:47:47,184 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:47,184 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:47:47,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:47,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:47,523 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:47:47,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599495035]
[2024-10-24 01:47:47,523 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599495035] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 01:47:47,523 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244111735]
[2024-10-24 01:47:47,523 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:47,524 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 01:47:47,524 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 01:47:47,526 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)
[2024-10-24 01:47:47,527 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2024-10-24 01:47:47,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:47,632 INFO  L255         TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-10-24 01:47:47,635 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 01:47:48,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:48,009 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-24 01:47:48,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:48,813 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [244111735] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-24 01:47:48,813 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-24 01:47:48,813 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18
[2024-10-24 01:47:48,813 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902945220]
[2024-10-24 01:47:48,813 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-24 01:47:48,814 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2024-10-24 01:47:48,814 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:47:48,814 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2024-10-24 01:47:48,814 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342
[2024-10-24 01:47:48,814 INFO  L87              Difference]: Start difference. First operand 71979 states and 95548 transitions. Second operand  has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:49,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:47:49,675 INFO  L93              Difference]: Finished difference Result 160327 states and 213751 transitions.
[2024-10-24 01:47:49,676 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2024-10-24 01:47:49,676 INFO  L78                 Accepts]: Start accepts. Automaton has  has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 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 64
[2024-10-24 01:47:49,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:47:49,919 INFO  L225             Difference]: With dead ends: 160327
[2024-10-24 01:47:49,919 INFO  L226             Difference]: Without dead ends: 97387
[2024-10-24 01:47:50,160 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=328, Invalid=1078, Unknown=0, NotChecked=0, Total=1406
[2024-10-24 01:47:50,164 INFO  L432           NwaCegarLoop]: 59 mSDtfsCounter, 887 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time
[2024-10-24 01:47:50,165 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 545 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time]
[2024-10-24 01:47:50,222 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 97387 states.
[2024-10-24 01:47:51,168 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 97387 to 79342.
[2024-10-24 01:47:51,243 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 79342 states, 79341 states have (on average 1.3245988833011937) internal successors, (105095), 79341 states have internal predecessors, (105095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:51,446 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 79342 states to 79342 states and 105095 transitions.
[2024-10-24 01:47:51,446 INFO  L78                 Accepts]: Start accepts. Automaton has 79342 states and 105095 transitions. Word has length 64
[2024-10-24 01:47:51,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:47:51,446 INFO  L471      AbstractCegarLoop]: Abstraction has 79342 states and 105095 transitions.
[2024-10-24 01:47:51,447 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 7.7368421052631575) internal successors, (147), 18 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:51,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 79342 states and 105095 transitions.
[2024-10-24 01:47:51,449 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2024-10-24 01:47:51,449 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:47:51,449 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:47:51,466 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2024-10-24 01:47:51,650 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 01:47:51,650 INFO  L396      AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:47:51,650 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:47:51,651 INFO  L85        PathProgramCache]: Analyzing trace with hash -245514269, now seen corresponding path program 1 times
[2024-10-24 01:47:51,651 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:47:51,651 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332791368]
[2024-10-24 01:47:51,651 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:51,651 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:47:51,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:51,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2024-10-24 01:47:51,699 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:47:51,699 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332791368]
[2024-10-24 01:47:51,700 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332791368] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:47:51,700 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:47:51,700 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:47:51,700 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875710536]
[2024-10-24 01:47:51,700 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:47:51,701 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:47:51,701 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:47:51,701 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:47:51,701 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:47:51,702 INFO  L87              Difference]: Start difference. First operand 79342 states and 105095 transitions. Second operand  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:52,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:47:52,258 INFO  L93              Difference]: Finished difference Result 141555 states and 187847 transitions.
[2024-10-24 01:47:52,259 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:47:52,259 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 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 64
[2024-10-24 01:47:52,259 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:47:52,345 INFO  L225             Difference]: With dead ends: 141555
[2024-10-24 01:47:52,345 INFO  L226             Difference]: Without dead ends: 62411
[2024-10-24 01:47:52,404 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
[2024-10-24 01:47:52,405 INFO  L432           NwaCegarLoop]: 73 mSDtfsCounter, 52 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:47:52,405 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 97 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:47:52,446 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62411 states.
[2024-10-24 01:47:53,355 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62411 to 62411.
[2024-10-24 01:47:53,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 62411 states, 62410 states have (on average 1.308684505688191) internal successors, (81675), 62410 states have internal predecessors, (81675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:53,625 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62411 states to 62411 states and 81675 transitions.
[2024-10-24 01:47:53,625 INFO  L78                 Accepts]: Start accepts. Automaton has 62411 states and 81675 transitions. Word has length 64
[2024-10-24 01:47:53,626 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:47:53,626 INFO  L471      AbstractCegarLoop]: Abstraction has 62411 states and 81675 transitions.
[2024-10-24 01:47:53,626 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:53,626 INFO  L276                IsEmpty]: Start isEmpty. Operand 62411 states and 81675 transitions.
[2024-10-24 01:47:53,627 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2024-10-24 01:47:53,627 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:47:53,627 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:47:53,628 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16
[2024-10-24 01:47:53,628 INFO  L396      AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:47:53,628 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:47:53,628 INFO  L85        PathProgramCache]: Analyzing trace with hash -748914802, now seen corresponding path program 1 times
[2024-10-24 01:47:53,628 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:47:53,628 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156964254]
[2024-10-24 01:47:53,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:53,629 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:47:53,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:53,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:53,715 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:47:53,715 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156964254]
[2024-10-24 01:47:53,715 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156964254] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 01:47:53,715 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 01:47:53,715 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 01:47:53,715 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694256647]
[2024-10-24 01:47:53,715 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 01:47:53,716 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 01:47:53,716 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:47:53,716 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 01:47:53,717 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 01:47:53,717 INFO  L87              Difference]: Start difference. First operand 62411 states and 81675 transitions. Second operand  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:53,993 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 01:47:53,993 INFO  L93              Difference]: Finished difference Result 94330 states and 123121 transitions.
[2024-10-24 01:47:53,993 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 01:47:53,994 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 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 65
[2024-10-24 01:47:53,994 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 01:47:54,037 INFO  L225             Difference]: With dead ends: 94330
[2024-10-24 01:47:54,038 INFO  L226             Difference]: Without dead ends: 35162
[2024-10-24 01:47:54,075 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
[2024-10-24 01:47:54,076 INFO  L432           NwaCegarLoop]: 93 mSDtfsCounter, 27 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 01:47:54,076 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 150 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 01:47:54,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35162 states.
[2024-10-24 01:47:54,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35162 to 35160.
[2024-10-24 01:47:54,755 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 35160 states, 35159 states have (on average 1.2797576722887454) internal successors, (44995), 35159 states have internal predecessors, (44995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:54,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 35160 states to 35160 states and 44995 transitions.
[2024-10-24 01:47:54,863 INFO  L78                 Accepts]: Start accepts. Automaton has 35160 states and 44995 transitions. Word has length 65
[2024-10-24 01:47:54,864 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 01:47:54,864 INFO  L471      AbstractCegarLoop]: Abstraction has 35160 states and 44995 transitions.
[2024-10-24 01:47:54,864 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2024-10-24 01:47:54,864 INFO  L276                IsEmpty]: Start isEmpty. Operand 35160 states and 44995 transitions.
[2024-10-24 01:47:54,865 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2024-10-24 01:47:54,869 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 01:47:54,869 INFO  L215           NwaCegarLoop]: trace histogram [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]
[2024-10-24 01:47:54,869 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17
[2024-10-24 01:47:54,870 INFO  L396      AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 01:47:54,870 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 01:47:54,870 INFO  L85        PathProgramCache]: Analyzing trace with hash -1458928242, now seen corresponding path program 1 times
[2024-10-24 01:47:54,870 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 01:47:54,870 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662361460]
[2024-10-24 01:47:54,870 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:54,870 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 01:47:54,912 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:55,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:55,978 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 01:47:55,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662361460]
[2024-10-24 01:47:55,978 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662361460] provided 0 perfect and 1 imperfect interpolant sequences
[2024-10-24 01:47:55,978 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362705867]
[2024-10-24 01:47:55,979 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 01:47:55,979 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2024-10-24 01:47:55,979 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 01:47:55,981 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)
[2024-10-24 01:47:55,982 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2024-10-24 01:47:56,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 01:47:56,084 INFO  L255         TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-10-24 01:47:56,087 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-10-24 01:47:59,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:47:59,158 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-10-24 01:48:00,940 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 01:48:00,940 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362705867] provided 0 perfect and 2 imperfect interpolant sequences
[2024-10-24 01:48:00,940 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2024-10-24 01:48:00,940 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20, 20] total 59
[2024-10-24 01:48:00,940 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798966578]
[2024-10-24 01:48:00,941 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2024-10-24 01:48:00,941 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 59 states
[2024-10-24 01:48:00,941 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 01:48:00,942 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants.
[2024-10-24 01:48:00,942 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=294, Invalid=3128, Unknown=0, NotChecked=0, Total=3422
[2024-10-24 01:48:00,943 INFO  L87              Difference]: Start difference. First operand 35160 states and 44995 transitions. Second operand  has 59 states, 59 states have (on average 2.9491525423728815) internal successors, (174), 59 states have internal predecessors, (174), 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)