./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c --full-output --architecture 64bit


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


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/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash c88fa6f8c6fb4d25eacade9ad32b3ed1a2c4aca541eca7e1f9fe329a378f85ab
--- Real Ultimate output ---
This is Ultimate 0.2.5-dev-4a390ef-m
[2024-10-24 03:52:10,689 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-10-24 03:52:10,763 INFO  L114        SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf
[2024-10-24 03:52:10,769 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-10-24 03:52:10,771 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-10-24 03:52:10,796 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-10-24 03:52:10,797 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-10-24 03:52:10,797 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-10-24 03:52:10,798 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-10-24 03:52:10,801 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-10-24 03:52:10,801 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-10-24 03:52:10,802 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-10-24 03:52:10,802 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-10-24 03:52:10,802 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-10-24 03:52:10,803 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-10-24 03:52:10,803 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-10-24 03:52:10,803 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-10-24 03:52:10,803 INFO  L153        SettingsManager]:  * Overapproximate operations on floating types=true
[2024-10-24 03:52:10,803 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-10-24 03:52:10,804 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-10-24 03:52:10,804 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-10-24 03:52:10,806 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-10-24 03:52:10,806 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-10-24 03:52:10,806 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-10-24 03:52:10,806 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-10-24 03:52:10,807 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-10-24 03:52:10,807 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-10-24 03:52:10,808 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-10-24 03:52:10,808 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-10-24 03:52:10,808 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 03:52:10,809 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-10-24 03:52:10,809 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-10-24 03:52:10,809 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-10-24 03:52:10,810 INFO  L153        SettingsManager]:  * Trace refinement strategy=CAMEL
[2024-10-24 03:52:10,810 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2024-10-24 03:52:10,810 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-10-24 03:52:10,810 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-10-24 03:52:10,811 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-10-24 03:52:10,811 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-10-24 03:52:10,811 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 -> 64bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c88fa6f8c6fb4d25eacade9ad32b3ed1a2c4aca541eca7e1f9fe329a378f85ab
[2024-10-24 03:52:11,098 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-10-24 03:52:11,120 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-10-24 03:52:11,122 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-10-24 03:52:11,123 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-10-24 03:52:11,124 INFO  L274        PluginConnector]: CDTParser initialized
[2024-10-24 03:52:11,125 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c
[2024-10-24 03:52:12,524 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-10-24 03:52:12,943 INFO  L384              CDTParser]: Found 1 translation units.
[2024-10-24 03:52:12,943 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c
[2024-10-24 03:52:12,978 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2337ce2cf/92f21e9e427642f1aa97d8a9447c4df5/FLAG71443b7f2
[2024-10-24 03:52:12,994 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2337ce2cf/92f21e9e427642f1aa97d8a9447c4df5
[2024-10-24 03:52:12,998 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-10-24 03:52:13,000 INFO  L133        ToolchainWalker]: Walking toolchain with 6 elements.
[2024-10-24 03:52:13,002 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-10-24 03:52:13,002 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-10-24 03:52:13,008 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-10-24 03:52:13,008 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:52:12" (1/1) ...
[2024-10-24 03:52:13,009 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b1f794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:13, skipping insertion in model container
[2024-10-24 03:52:13,011 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:52:12" (1/1) ...
[2024-10-24 03:52:13,120 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-10-24 03:52:13,386 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/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c[1177,1190]
[2024-10-24 03:52:14,048 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 03:52:14,058 INFO  L200         MainTranslator]: Completed pre-run
[2024-10-24 03:52:14,069 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/hardware-verification-bv/btor2c-lazyMod.cambridge.2.prop1-back-serstep.c[1177,1190]
[2024-10-24 03:52:14,406 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-10-24 03:52:14,422 INFO  L204         MainTranslator]: Completed translation
[2024-10-24 03:52:14,422 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14 WrapperNode
[2024-10-24 03:52:14,422 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-10-24 03:52:14,424 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-10-24 03:52:14,424 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-10-24 03:52:14,424 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-10-24 03:52:14,431 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:14,569 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:16,692 INFO  L138                Inliner]: procedures = 17, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 17768
[2024-10-24 03:52:16,696 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-10-24 03:52:16,698 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-10-24 03:52:16,698 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-10-24 03:52:16,698 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-10-24 03:52:16,710 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:16,711 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:17,365 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:17,858 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 03:52:17,862 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:17,863 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:18,528 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:18,617 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:18,718 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:18,793 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:19,123 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-10-24 03:52:19,125 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-10-24 03:52:19,126 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-10-24 03:52:19,126 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-10-24 03:52:19,127 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (1/1) ...
[2024-10-24 03:52:19,132 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-10-24 03:52:19,141 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-10-24 03:52:19,157 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 03:52:19,291 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 03:52:19,343 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-10-24 03:52:19,343 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int#0
[2024-10-24 03:52:19,344 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-10-24 03:52:19,344 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-10-24 03:52:20,184 INFO  L238             CfgBuilder]: Building ICFG
[2024-10-24 03:52:20,189 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-10-24 03:52:46,648 INFO  L?                        ?]: Removed 9677 outVars from TransFormulas that were not future-live.
[2024-10-24 03:52:46,648 INFO  L287             CfgBuilder]: Performing block encoding
[2024-10-24 03:52:46,931 INFO  L309             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-10-24 03:52:46,931 INFO  L314             CfgBuilder]: Removed 1 assume(true) statements.
[2024-10-24 03:52:46,931 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:52:46 BoogieIcfgContainer
[2024-10-24 03:52:46,933 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-10-24 03:52:46,936 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-10-24 03:52:46,937 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-10-24 03:52:46,940 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-10-24 03:52:46,940 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:52:12" (1/3) ...
[2024-10-24 03:52:46,941 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542361fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:52:46, skipping insertion in model container
[2024-10-24 03:52:46,942 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:52:14" (2/3) ...
[2024-10-24 03:52:46,943 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@542361fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:52:46, skipping insertion in model container
[2024-10-24 03:52:46,943 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:52:46" (3/3) ...
[2024-10-24 03:52:46,944 INFO  L112   eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.cambridge.2.prop1-back-serstep.c
[2024-10-24 03:52:46,962 INFO  L209   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-10-24 03:52:46,962 INFO  L149   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-10-24 03:52:47,159 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-10-24 03:52:47,165 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;@229f3afd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-10-24 03:52:47,166 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-10-24 03:52:47,188 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 6123 states, 6121 states have (on average 1.5062898219245222) internal successors, (9220), 6122 states have internal predecessors, (9220), 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 03:52:47,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 383
[2024-10-24 03:52:47,224 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:52:47,226 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:47,226 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:52:47,233 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:52:47,234 INFO  L85        PathProgramCache]: Analyzing trace with hash 102023663, now seen corresponding path program 1 times
[2024-10-24 03:52:47,243 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:52:47,244 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068355908]
[2024-10-24 03:52:47,244 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:52:47,245 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:52:47,966 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 03:52:49,793 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 03:52:49,794 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 03:52:49,794 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068355908]
[2024-10-24 03:52:49,795 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068355908] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 03:52:49,795 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 03:52:49,795 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 03:52:49,797 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13957131]
[2024-10-24 03:52:49,798 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 03:52:49,804 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 03:52:49,805 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 03:52:49,832 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 03:52:49,833 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 03:52:49,852 INFO  L87              Difference]: Start difference. First operand  has 6123 states, 6121 states have (on average 1.5062898219245222) internal successors, (9220), 6122 states have internal predecessors, (9220), 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 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 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 03:52:55,885 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 03:52:55,886 INFO  L93              Difference]: Finished difference Result 17937 states and 27016 transitions.
[2024-10-24 03:52:55,888 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 03:52:55,889 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 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 382
[2024-10-24 03:52:55,891 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 03:52:55,962 INFO  L225             Difference]: With dead ends: 17937
[2024-10-24 03:52:55,963 INFO  L226             Difference]: Without dead ends: 11979
[2024-10-24 03:52:55,985 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-24 03:52:55,989 INFO  L432           NwaCegarLoop]: 7371 mSDtfsCounter, 8810 mSDsluCounter, 21989 mSDsCounter, 0 mSdLazyCounter, 7265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8810 SdHoareTripleChecker+Valid, 29360 SdHoareTripleChecker+Invalid, 7266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time
[2024-10-24 03:52:55,991 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8810 Valid, 29360 Invalid, 7266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 7265 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time]
[2024-10-24 03:52:56,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11979 states.
[2024-10-24 03:52:56,215 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11979 to 6473.
[2024-10-24 03:52:56,231 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6473 states, 6472 states have (on average 1.5054079110012362) internal successors, (9743), 6472 states have internal predecessors, (9743), 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 03:52:56,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6473 states to 6473 states and 9743 transitions.
[2024-10-24 03:52:56,253 INFO  L78                 Accepts]: Start accepts. Automaton has 6473 states and 9743 transitions. Word has length 382
[2024-10-24 03:52:56,255 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 03:52:56,255 INFO  L471      AbstractCegarLoop]: Abstraction has 6473 states and 9743 transitions.
[2024-10-24 03:52:56,256 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 76.4) internal successors, (382), 4 states have internal predecessors, (382), 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 03:52:56,256 INFO  L276                IsEmpty]: Start isEmpty. Operand 6473 states and 9743 transitions.
[2024-10-24 03:52:56,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 385
[2024-10-24 03:52:56,263 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:52:56,264 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:56,264 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2024-10-24 03:52:56,264 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:52:56,265 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:52:56,265 INFO  L85        PathProgramCache]: Analyzing trace with hash -391321076, now seen corresponding path program 1 times
[2024-10-24 03:52:56,265 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:52:56,266 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700253271]
[2024-10-24 03:52:56,266 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:52:56,266 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:52:56,456 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 03:52:57,389 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 03:52:57,389 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 03:52:57,389 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700253271]
[2024-10-24 03:52:57,390 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700253271] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 03:52:57,390 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 03:52:57,390 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 03:52:57,390 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90106075]
[2024-10-24 03:52:57,390 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 03:52:57,394 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 03:52:57,394 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 03:52:57,395 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 03:52:57,395 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-24 03:52:57,396 INFO  L87              Difference]: Start difference. First operand 6473 states and 9743 transitions. Second operand  has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 03:52:57,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 03:52:57,537 INFO  L93              Difference]: Finished difference Result 6477 states and 9747 transitions.
[2024-10-24 03:52:57,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-24 03:52:57,538 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 384
[2024-10-24 03:52:57,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 03:52:57,561 INFO  L225             Difference]: With dead ends: 6477
[2024-10-24 03:52:57,562 INFO  L226             Difference]: Without dead ends: 6475
[2024-10-24 03:52:57,565 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-24 03:52:57,566 INFO  L432           NwaCegarLoop]: 9215 mSDtfsCounter, 0 mSDsluCounter, 18425 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27640 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 03:52:57,567 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 03:52:57,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6475 states.
[2024-10-24 03:52:57,674 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6475 to 6475.
[2024-10-24 03:52:57,692 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6475 states, 6474 states have (on average 1.5052517763361137) internal successors, (9745), 6474 states have internal predecessors, (9745), 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 03:52:57,714 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6475 states to 6475 states and 9745 transitions.
[2024-10-24 03:52:57,714 INFO  L78                 Accepts]: Start accepts. Automaton has 6475 states and 9745 transitions. Word has length 384
[2024-10-24 03:52:57,715 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 03:52:57,716 INFO  L471      AbstractCegarLoop]: Abstraction has 6475 states and 9745 transitions.
[2024-10-24 03:52:57,717 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 96.0) internal successors, (384), 4 states have internal predecessors, (384), 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 03:52:57,717 INFO  L276                IsEmpty]: Start isEmpty. Operand 6475 states and 9745 transitions.
[2024-10-24 03:52:57,722 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 386
[2024-10-24 03:52:57,723 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:52:57,724 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:57,724 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2024-10-24 03:52:57,724 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:52:57,725 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:52:57,726 INFO  L85        PathProgramCache]: Analyzing trace with hash 755646142, now seen corresponding path program 1 times
[2024-10-24 03:52:57,726 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:52:57,730 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060559109]
[2024-10-24 03:52:57,730 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:52:57,730 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:52:57,880 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 03:52:58,429 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 03:52:58,429 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 03:52:58,429 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060559109]
[2024-10-24 03:52:58,430 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060559109] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 03:52:58,430 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 03:52:58,430 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 03:52:58,430 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839878195]
[2024-10-24 03:52:58,430 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 03:52:58,431 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2024-10-24 03:52:58,431 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 03:52:58,432 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2024-10-24 03:52:58,432 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-24 03:52:58,434 INFO  L87              Difference]: Start difference. First operand 6475 states and 9745 transitions. Second operand  has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 03:52:58,606 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 03:52:58,606 INFO  L93              Difference]: Finished difference Result 12436 states and 18721 transitions.
[2024-10-24 03:52:58,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2024-10-24 03:52:58,607 INFO  L78                 Accepts]: Start accepts. Automaton has  has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 385
[2024-10-24 03:52:58,608 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 03:52:58,637 INFO  L225             Difference]: With dead ends: 12436
[2024-10-24 03:52:58,637 INFO  L226             Difference]: Without dead ends: 6477
[2024-10-24 03:52:58,647 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2024-10-24 03:52:58,649 INFO  L432           NwaCegarLoop]: 9215 mSDtfsCounter, 0 mSDsluCounter, 18422 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27637 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 03:52:58,650 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 03:52:58,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6477 states.
[2024-10-24 03:52:58,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6477 to 6477.
[2024-10-24 03:52:58,762 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6477 states, 6476 states have (on average 1.5050957381099443) internal successors, (9747), 6476 states have internal predecessors, (9747), 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 03:52:58,778 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6477 states to 6477 states and 9747 transitions.
[2024-10-24 03:52:58,779 INFO  L78                 Accepts]: Start accepts. Automaton has 6477 states and 9747 transitions. Word has length 385
[2024-10-24 03:52:58,779 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 03:52:58,780 INFO  L471      AbstractCegarLoop]: Abstraction has 6477 states and 9747 transitions.
[2024-10-24 03:52:58,780 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 96.25) internal successors, (385), 4 states have internal predecessors, (385), 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 03:52:58,780 INFO  L276                IsEmpty]: Start isEmpty. Operand 6477 states and 9747 transitions.
[2024-10-24 03:52:58,785 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 387
[2024-10-24 03:52:58,785 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:52:58,785 INFO  L215           NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:52:58,786 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2024-10-24 03:52:58,786 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:52:58,786 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:52:58,787 INFO  L85        PathProgramCache]: Analyzing trace with hash 852230437, now seen corresponding path program 1 times
[2024-10-24 03:52:58,787 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:52:58,787 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217311162]
[2024-10-24 03:52:58,787 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:52:58,787 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:52:58,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 03:52:59,587 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 03:52:59,587 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 03:52:59,588 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217311162]
[2024-10-24 03:52:59,588 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217311162] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 03:52:59,588 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 03:52:59,588 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2024-10-24 03:52:59,588 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229233939]
[2024-10-24 03:52:59,588 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 03:52:59,589 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2024-10-24 03:52:59,589 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 03:52:59,590 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2024-10-24 03:52:59,590 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2024-10-24 03:52:59,591 INFO  L87              Difference]: Start difference. First operand 6477 states and 9747 transitions. Second operand  has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 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 03:52:59,884 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 03:52:59,884 INFO  L93              Difference]: Finished difference Result 18034 states and 27151 transitions.
[2024-10-24 03:52:59,885 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2024-10-24 03:52:59,885 INFO  L78                 Accepts]: Start accepts. Automaton has  has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 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 386
[2024-10-24 03:52:59,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 03:52:59,927 INFO  L225             Difference]: With dead ends: 18034
[2024-10-24 03:52:59,927 INFO  L226             Difference]: Without dead ends: 12073
[2024-10-24 03:52:59,938 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2024-10-24 03:52:59,942 INFO  L432           NwaCegarLoop]: 9213 mSDtfsCounter, 8822 mSDsluCounter, 27389 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8822 SdHoareTripleChecker+Valid, 36602 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 03:52:59,943 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [8822 Valid, 36602 Invalid, 23 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 03:52:59,960 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12073 states.
[2024-10-24 03:53:00,102 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12073 to 6712.
[2024-10-24 03:53:00,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6712 states, 6711 states have (on average 1.5046937863209655) internal successors, (10098), 6711 states have internal predecessors, (10098), 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 03:53:00,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6712 states to 6712 states and 10098 transitions.
[2024-10-24 03:53:00,133 INFO  L78                 Accepts]: Start accepts. Automaton has 6712 states and 10098 transitions. Word has length 386
[2024-10-24 03:53:00,134 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 03:53:00,134 INFO  L471      AbstractCegarLoop]: Abstraction has 6712 states and 10098 transitions.
[2024-10-24 03:53:00,135 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 77.2) internal successors, (386), 4 states have internal predecessors, (386), 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 03:53:00,136 INFO  L276                IsEmpty]: Start isEmpty. Operand 6712 states and 10098 transitions.
[2024-10-24 03:53:00,424 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3232
[2024-10-24 03:53:00,424 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:53:00,427 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:53:00,427 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2024-10-24 03:53:00,428 INFO  L396      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:53:00,428 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:53:00,430 INFO  L85        PathProgramCache]: Analyzing trace with hash 1442784478, now seen corresponding path program 1 times
[2024-10-24 03:53:00,430 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:53:00,430 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737653463]
[2024-10-24 03:53:00,431 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:53:00,431 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:53:07,589 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-10-24 03:53:13,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 298 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2024-10-24 03:53:13,761 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2024-10-24 03:53:13,761 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737653463]
[2024-10-24 03:53:13,761 INFO  L158   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737653463] provided 1 perfect and 0 imperfect interpolant sequences
[2024-10-24 03:53:13,762 INFO  L185   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2024-10-24 03:53:13,762 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2024-10-24 03:53:13,762 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222357526]
[2024-10-24 03:53:13,762 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2024-10-24 03:53:13,766 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2024-10-24 03:53:13,766 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2024-10-24 03:53:13,770 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2024-10-24 03:53:13,770 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2024-10-24 03:53:13,771 INFO  L87              Difference]: Start difference. First operand 6712 states and 10098 transitions. Second operand  has 3 states, 3 states have (on average 1077.0) internal successors, (3231), 3 states have internal predecessors, (3231), 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 03:53:13,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-10-24 03:53:13,873 INFO  L93              Difference]: Finished difference Result 12674 states and 19075 transitions.
[2024-10-24 03:53:13,874 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2024-10-24 03:53:13,876 INFO  L78                 Accepts]: Start accepts. Automaton has  has 3 states, 3 states have (on average 1077.0) internal successors, (3231), 3 states have internal predecessors, (3231), 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 3231
[2024-10-24 03:53:13,879 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-10-24 03:53:13,891 INFO  L225             Difference]: With dead ends: 12674
[2024-10-24 03:53:13,892 INFO  L226             Difference]: Without dead ends: 6713
[2024-10-24 03:53:13,901 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 03:53:13,903 INFO  L432           NwaCegarLoop]: 9216 mSDtfsCounter, 0 mSDsluCounter, 9211 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18427 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time
[2024-10-24 03:53:13,904 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18427 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-10-24 03:53:13,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6713 states.
[2024-10-24 03:53:14,011 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 6713.
[2024-10-24 03:53:14,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 6713 states, 6712 states have (on average 1.5046185935637664) internal successors, (10099), 6712 states have internal predecessors, (10099), 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 03:53:14,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 10099 transitions.
[2024-10-24 03:53:14,035 INFO  L78                 Accepts]: Start accepts. Automaton has 6713 states and 10099 transitions. Word has length 3231
[2024-10-24 03:53:14,038 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-10-24 03:53:14,038 INFO  L471      AbstractCegarLoop]: Abstraction has 6713 states and 10099 transitions.
[2024-10-24 03:53:14,040 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 1077.0) internal successors, (3231), 3 states have internal predecessors, (3231), 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 03:53:14,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 6713 states and 10099 transitions.
[2024-10-24 03:53:14,353 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 3232
[2024-10-24 03:53:14,353 INFO  L207           NwaCegarLoop]: Found error trace
[2024-10-24 03:53:14,355 INFO  L215           NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2024-10-24 03:53:14,356 WARN  L453      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2024-10-24 03:53:14,356 INFO  L396      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-10-24 03:53:14,356 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-10-24 03:53:14,358 INFO  L85        PathProgramCache]: Analyzing trace with hash 1664393615, now seen corresponding path program 1 times
[2024-10-24 03:53:14,358 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2024-10-24 03:53:14,358 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396446318]
[2024-10-24 03:53:14,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-10-24 03:53:14,359 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2024-10-24 03:53:17,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat