java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label14_true-unreach-call.c


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This is Ultimate 0.1.23-d380424
[2018-10-24 15:14:24,033 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-24 15:14:24,035 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-24 15:14:24,049 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-24 15:14:24,049 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-24 15:14:24,051 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-24 15:14:24,052 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-10-24 15:14:24,065 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-24 15:14:24,068 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-24 15:14:24,069 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-24 15:14:24,073 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-24 15:14:24,074 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-24 15:14:24,079 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-24 15:14:24,086 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-24 15:14:24,088 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-24 15:14:24,091 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-24 15:14:24,092 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-24 15:14:24,098 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-24 15:14:24,099 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-24 15:14:24,100 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-24 15:14:24,101 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-24 15:14:24,102 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-24 15:14:24,107 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-24 15:14:24,109 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-24 15:14:24,110 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-10-24 15:14:24,135 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-24 15:14:24,136 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-24 15:14:24,137 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-24 15:14:24,137 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-24 15:14:24,138 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-24 15:14:24,138 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-24 15:14:24,138 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-24 15:14:24,139 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-24 15:14:24,139 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-24 15:14:24,139 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-24 15:14:24,139 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-24 15:14:24,139 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-24 15:14:24,140 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-24 15:14:24,140 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-24 15:14:24,140 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-24 15:14:24,140 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-24 15:14:24,141 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-24 15:14:24,141 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-24 15:14:24,141 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-24 15:14:24,141 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-24 15:14:24,141 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-24 15:14:24,142 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-24 15:14:24,142 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-24 15:14:24,142 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-24 15:14:24,142 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-24 15:14:24,143 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-24 15:14:24,143 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-24 15:14:24,143 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-24 15:14:24,213 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-24 15:14:24,233 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-24 15:14:24,239 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-24 15:14:24,241 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-24 15:14:24,241 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-24 15:14:24,242 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label14_true-unreach-call.c
[2018-10-24 15:14:24,311 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46d3515/fd096610cb3c49ef9351ff1f1c6b9e5a/FLAGc59df0898
[2018-10-24 15:14:25,349 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-24 15:14:25,350 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label14_true-unreach-call.c
[2018-10-24 15:14:25,401 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46d3515/fd096610cb3c49ef9351ff1f1c6b9e5a/FLAGc59df0898
[2018-10-24 15:14:25,416 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46d3515/fd096610cb3c49ef9351ff1f1c6b9e5a
[2018-10-24 15:14:25,427 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-24 15:14:25,428 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-24 15:14:25,429 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-24 15:14:25,430 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-24 15:14:25,434 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-24 15:14:25,435 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:14:25" (1/1) ...
[2018-10-24 15:14:25,438 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b2e66ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:25, skipping insertion in model container
[2018-10-24 15:14:25,438 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 03:14:25" (1/1) ...
[2018-10-24 15:14:25,448 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-24 15:14:25,758 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-24 15:14:28,026 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-24 15:14:28,030 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-24 15:14:29,062 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-24 15:14:29,135 INFO  L193         MainTranslator]: Completed translation
[2018-10-24 15:14:29,136 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29 WrapperNode
[2018-10-24 15:14:29,136 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-24 15:14:29,137 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-24 15:14:29,138 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-24 15:14:29,138 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-24 15:14:29,147 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:29,230 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:29,984 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-24 15:14:29,985 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-24 15:14:29,985 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-24 15:14:29,985 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-24 15:14:29,995 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:29,996 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,037 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,038 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,189 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,251 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,307 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
[2018-10-24 15:14:30,354 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-24 15:14:30,355 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-24 15:14:30,355 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-24 15:14:30,355 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-24 15:14:30,356 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-24 15:14:30,426 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-24 15:14:30,426 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-24 15:14:30,426 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-24 15:14:44,568 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-24 15:14:44,569 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:14:44 BoogieIcfgContainer
[2018-10-24 15:14:44,569 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-24 15:14:44,570 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-24 15:14:44,570 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-24 15:14:44,573 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-24 15:14:44,574 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 03:14:25" (1/3) ...
[2018-10-24 15:14:44,575 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f776cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:14:44, skipping insertion in model container
[2018-10-24 15:14:44,575 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 03:14:29" (2/3) ...
[2018-10-24 15:14:44,575 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f776cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 03:14:44, skipping insertion in model container
[2018-10-24 15:14:44,576 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 03:14:44" (3/3) ...
[2018-10-24 15:14:44,578 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label14_true-unreach-call.c
[2018-10-24 15:14:44,588 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-24 15:14:44,600 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-24 15:14:44,619 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-24 15:14:44,669 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-24 15:14:44,670 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-24 15:14:44,670 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-24 15:14:44,670 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-24 15:14:44,670 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-24 15:14:44,670 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-24 15:14:44,670 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-24 15:14:44,670 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-24 15:14:44,670 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-24 15:14:44,729 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-24 15:14:44,860 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1659
[2018-10-24 15:14:44,860 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:14:44,863 INFO  L375         BasicCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-24 15:14:44,866 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:14:44,872 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:14:44,873 INFO  L82        PathProgramCache]: Analyzing trace with hash 1245100218, now seen corresponding path program 1 times
[2018-10-24 15:14:44,875 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:14:44,876 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:14:44,936 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:14:44,936 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:14:44,936 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:14:45,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:14:50,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 15:14:50,420 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:14:50,420 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-24 15:14:50,430 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:14:50,442 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:14:50,443 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:14:50,445 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-24 15:15:10,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:15:10,533 INFO  L93              Difference]: Finished difference Result 7916 states and 15104 transitions.
[2018-10-24 15:15:10,533 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:15:10,535 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1658
[2018-10-24 15:15:10,544 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:15:10,602 INFO  L225             Difference]: With dead ends: 7916
[2018-10-24 15:15:10,602 INFO  L226             Difference]: Without dead ends: 5723
[2018-10-24 15:15:10,613 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:15:10,639 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5723 states.
[2018-10-24 15:15:10,831 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5714.
[2018-10-24 15:15:10,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5714 states.
[2018-10-24 15:15:10,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 9338 transitions.
[2018-10-24 15:15:10,853 INFO  L78                 Accepts]: Start accepts. Automaton has 5714 states and 9338 transitions. Word has length 1658
[2018-10-24 15:15:10,859 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:15:10,859 INFO  L481      AbstractCegarLoop]: Abstraction has 5714 states and 9338 transitions.
[2018-10-24 15:15:10,859 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-24 15:15:10,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 5714 states and 9338 transitions.
[2018-10-24 15:15:11,130 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1665
[2018-10-24 15:15:11,131 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:15:11,133 INFO  L375         BasicCegarLoop]: trace histogram [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, 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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]
[2018-10-24 15:15:11,133 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:15:11,133 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:15:11,134 INFO  L82        PathProgramCache]: Analyzing trace with hash 1199619255, now seen corresponding path program 1 times
[2018-10-24 15:15:11,134 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:15:11,134 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:15:11,136 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:11,136 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:15:11,136 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:11,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:15:12,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 15:15:12,478 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:15:12,478 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-24 15:15:12,482 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-24 15:15:12,483 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-24 15:15:12,483 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 15:15:12,483 INFO  L87              Difference]: Start difference. First operand 5714 states and 9338 transitions. Second operand 3 states.
[2018-10-24 15:15:23,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:15:23,868 INFO  L93              Difference]: Finished difference Result 16647 states and 27404 transitions.
[2018-10-24 15:15:23,869 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-24 15:15:23,869 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1664
[2018-10-24 15:15:23,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:15:23,924 INFO  L225             Difference]: With dead ends: 16647
[2018-10-24 15:15:23,925 INFO  L226             Difference]: Without dead ends: 10935
[2018-10-24 15:15:23,935 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 15:15:23,945 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10935 states.
[2018-10-24 15:15:24,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10935 to 10849.
[2018-10-24 15:15:24,109 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10849 states.
[2018-10-24 15:15:24,134 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10849 states to 10849 states and 16465 transitions.
[2018-10-24 15:15:24,134 INFO  L78                 Accepts]: Start accepts. Automaton has 10849 states and 16465 transitions. Word has length 1664
[2018-10-24 15:15:24,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:15:24,135 INFO  L481      AbstractCegarLoop]: Abstraction has 10849 states and 16465 transitions.
[2018-10-24 15:15:24,135 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-24 15:15:24,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 10849 states and 16465 transitions.
[2018-10-24 15:15:24,180 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1667
[2018-10-24 15:15:24,180 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:15:24,182 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:15:24,182 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:15:24,182 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:15:24,183 INFO  L82        PathProgramCache]: Analyzing trace with hash -1759493230, now seen corresponding path program 1 times
[2018-10-24 15:15:24,183 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:15:24,184 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:15:24,185 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:24,185 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:15:24,185 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:24,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:15:27,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 15:15:27,416 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:15:27,416 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-24 15:15:27,418 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:15:27,418 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:15:27,418 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:15:27,419 INFO  L87              Difference]: Start difference. First operand 10849 states and 16465 transitions. Second operand 4 states.
[2018-10-24 15:15:42,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:15:42,856 INFO  L93              Difference]: Finished difference Result 42136 states and 64239 transitions.
[2018-10-24 15:15:42,857 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:15:42,857 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1666
[2018-10-24 15:15:42,861 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:15:42,978 INFO  L225             Difference]: With dead ends: 42136
[2018-10-24 15:15:42,979 INFO  L226             Difference]: Without dead ends: 31289
[2018-10-24 15:15:43,009 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:15:43,046 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31289 states.
[2018-10-24 15:15:43,519 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31289 to 31254.
[2018-10-24 15:15:43,519 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31254 states.
[2018-10-24 15:15:43,564 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31254 states to 31254 states and 42877 transitions.
[2018-10-24 15:15:43,564 INFO  L78                 Accepts]: Start accepts. Automaton has 31254 states and 42877 transitions. Word has length 1666
[2018-10-24 15:15:43,567 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:15:43,567 INFO  L481      AbstractCegarLoop]: Abstraction has 31254 states and 42877 transitions.
[2018-10-24 15:15:43,567 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-24 15:15:43,567 INFO  L276                IsEmpty]: Start isEmpty. Operand 31254 states and 42877 transitions.
[2018-10-24 15:15:43,644 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1699
[2018-10-24 15:15:43,644 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:15:43,645 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-24 15:15:43,646 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:15:43,646 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:15:43,647 INFO  L82        PathProgramCache]: Analyzing trace with hash -1968019157, now seen corresponding path program 1 times
[2018-10-24 15:15:43,647 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:15:43,647 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:15:43,648 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:43,648 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:15:43,649 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:15:43,895 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:15:44,203 WARN  L179               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-10-24 15:15:45,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 63 backedges. 45 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2018-10-24 15:15:45,591 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-24 15:15:45,591 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-24 15:15:45,603 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:15:46,063 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:15:46,144 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-24 15:15:47,930 INFO  L134       CoverageAnalysis]: Checked inductivity of 63 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked.
[2018-10-24 15:15:47,954 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-24 15:15:47,955 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2018-10-24 15:15:47,958 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-24 15:15:47,959 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-24 15:15:47,959 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2018-10-24 15:15:47,959 INFO  L87              Difference]: Start difference. First operand 31254 states and 42877 transitions. Second operand 5 states.
[2018-10-24 15:16:08,174 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:16:08,175 INFO  L93              Difference]: Finished difference Result 152535 states and 209723 transitions.
[2018-10-24 15:16:08,182 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-24 15:16:08,182 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1698
[2018-10-24 15:16:08,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:16:08,446 INFO  L225             Difference]: With dead ends: 152535
[2018-10-24 15:16:08,446 INFO  L226             Difference]: Without dead ends: 121283
[2018-10-24 15:16:08,491 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 1703 GetRequests, 1697 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2018-10-24 15:16:08,590 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 121283 states.
[2018-10-24 15:16:09,957 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 121283 to 121281.
[2018-10-24 15:16:09,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121281 states.
[2018-10-24 15:16:10,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121281 states to 121281 states and 142113 transitions.
[2018-10-24 15:16:10,154 INFO  L78                 Accepts]: Start accepts. Automaton has 121281 states and 142113 transitions. Word has length 1698
[2018-10-24 15:16:10,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:16:10,155 INFO  L481      AbstractCegarLoop]: Abstraction has 121281 states and 142113 transitions.
[2018-10-24 15:16:10,155 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-24 15:16:10,155 INFO  L276                IsEmpty]: Start isEmpty. Operand 121281 states and 142113 transitions.
[2018-10-24 15:16:10,335 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1839
[2018-10-24 15:16:10,335 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:16:10,337 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:16:10,337 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:16:10,337 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:16:10,338 INFO  L82        PathProgramCache]: Analyzing trace with hash 966904644, now seen corresponding path program 1 times
[2018-10-24 15:16:10,338 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:16:10,338 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:16:10,340 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:10,341 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:16:10,341 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:10,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:16:13,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 286 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2018-10-24 15:16:13,174 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:16:13,175 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-24 15:16:13,176 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:16:13,176 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:16:13,176 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:16:13,177 INFO  L87              Difference]: Start difference. First operand 121281 states and 142113 transitions. Second operand 4 states.
[2018-10-24 15:16:28,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:16:28,310 INFO  L93              Difference]: Finished difference Result 244264 states and 286625 transitions.
[2018-10-24 15:16:28,310 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:16:28,311 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1838
[2018-10-24 15:16:28,311 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:16:28,531 INFO  L225             Difference]: With dead ends: 244264
[2018-10-24 15:16:28,531 INFO  L226             Difference]: Without dead ends: 122985
[2018-10-24 15:16:28,623 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:16:28,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 122985 states.
[2018-10-24 15:16:30,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 122985 to 121274.
[2018-10-24 15:16:30,025 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 121274 states.
[2018-10-24 15:16:30,196 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 121274 states to 121274 states and 135429 transitions.
[2018-10-24 15:16:30,197 INFO  L78                 Accepts]: Start accepts. Automaton has 121274 states and 135429 transitions. Word has length 1838
[2018-10-24 15:16:30,198 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:16:30,198 INFO  L481      AbstractCegarLoop]: Abstraction has 121274 states and 135429 transitions.
[2018-10-24 15:16:30,198 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-24 15:16:30,198 INFO  L276                IsEmpty]: Start isEmpty. Operand 121274 states and 135429 transitions.
[2018-10-24 15:16:30,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1856
[2018-10-24 15:16:30,422 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:16:30,424 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:16:30,424 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:16:30,425 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:16:30,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 283653429, now seen corresponding path program 1 times
[2018-10-24 15:16:30,425 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:16:30,426 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:16:30,427 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:30,427 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:16:30,427 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:30,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:16:33,240 INFO  L134       CoverageAnalysis]: Checked inductivity of 285 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked.
[2018-10-24 15:16:33,241 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:16:33,241 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-24 15:16:33,242 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-24 15:16:33,243 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-24 15:16:33,243 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 15:16:33,243 INFO  L87              Difference]: Start difference. First operand 121274 states and 135429 transitions. Second operand 3 states.
[2018-10-24 15:16:44,079 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:16:44,079 INFO  L93              Difference]: Finished difference Result 347877 states and 388197 transitions.
[2018-10-24 15:16:44,085 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-24 15:16:44,085 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1855
[2018-10-24 15:16:44,085 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:16:44,362 INFO  L225             Difference]: With dead ends: 347877
[2018-10-24 15:16:44,362 INFO  L226             Difference]: Without dead ends: 212907
[2018-10-24 15:16:44,435 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 15:16:44,616 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 212907 states.
[2018-10-24 15:16:46,131 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 212907 to 207807.
[2018-10-24 15:16:46,131 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 207807 states.
[2018-10-24 15:16:46,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 207807 states to 207807 states and 217664 transitions.
[2018-10-24 15:16:46,344 INFO  L78                 Accepts]: Start accepts. Automaton has 207807 states and 217664 transitions. Word has length 1855
[2018-10-24 15:16:46,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:16:46,344 INFO  L481      AbstractCegarLoop]: Abstraction has 207807 states and 217664 transitions.
[2018-10-24 15:16:46,344 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-24 15:16:46,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 207807 states and 217664 transitions.
[2018-10-24 15:16:46,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1893
[2018-10-24 15:16:46,478 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:16:46,479 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:16:46,480 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:16:46,480 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:16:46,480 INFO  L82        PathProgramCache]: Analyzing trace with hash -1835921666, now seen corresponding path program 1 times
[2018-10-24 15:16:46,480 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:16:46,480 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:16:46,481 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:46,482 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:16:46,482 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:16:46,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:16:48,931 INFO  L134       CoverageAnalysis]: Checked inductivity of 395 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked.
[2018-10-24 15:16:48,931 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:16:48,932 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-24 15:16:48,933 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:16:48,934 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:16:48,934 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:16:48,934 INFO  L87              Difference]: Start difference. First operand 207807 states and 217664 transitions. Second operand 4 states.
[2018-10-24 15:17:01,475 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:17:01,476 INFO  L93              Difference]: Finished difference Result 539668 states and 566082 transitions.
[2018-10-24 15:17:01,483 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:17:01,483 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1892
[2018-10-24 15:17:01,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:17:01,968 INFO  L225             Difference]: With dead ends: 539668
[2018-10-24 15:17:01,969 INFO  L226             Difference]: Without dead ends: 331862
[2018-10-24 15:17:02,135 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:17:02,456 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 331862 states.
[2018-10-24 15:17:05,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 331862 to 326734.
[2018-10-24 15:17:05,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 326734 states.
[2018-10-24 15:17:05,843 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 326734 states to 326734 states and 339123 transitions.
[2018-10-24 15:17:05,843 INFO  L78                 Accepts]: Start accepts. Automaton has 326734 states and 339123 transitions. Word has length 1892
[2018-10-24 15:17:05,844 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:17:05,844 INFO  L481      AbstractCegarLoop]: Abstraction has 326734 states and 339123 transitions.
[2018-10-24 15:17:05,844 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-24 15:17:05,844 INFO  L276                IsEmpty]: Start isEmpty. Operand 326734 states and 339123 transitions.
[2018-10-24 15:17:06,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2011
[2018-10-24 15:17:06,031 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:17:06,032 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:17:06,032 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:17:06,033 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:17:06,033 INFO  L82        PathProgramCache]: Analyzing trace with hash 1516310479, now seen corresponding path program 1 times
[2018-10-24 15:17:06,033 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:17:06,033 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:17:06,034 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:06,034 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:17:06,035 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:07,648 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:17:14,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 580 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked.
[2018-10-24 15:17:14,556 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:17:14,556 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-24 15:17:14,557 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-24 15:17:14,558 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-24 15:17:14,558 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 15:17:14,558 INFO  L87              Difference]: Start difference. First operand 326734 states and 339123 transitions. Second operand 3 states.
[2018-10-24 15:17:22,838 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:17:22,838 INFO  L93              Difference]: Finished difference Result 653465 states and 678243 transitions.
[2018-10-24 15:17:22,838 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-24 15:17:22,838 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2010
[2018-10-24 15:17:22,839 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:17:23,211 INFO  L225             Difference]: With dead ends: 653465
[2018-10-24 15:17:23,211 INFO  L226             Difference]: Without dead ends: 326733
[2018-10-24 15:17:23,374 INFO  L605         BasicCegarLoop]: 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
[2018-10-24 15:17:23,645 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 326733 states.
[2018-10-24 15:17:26,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 326733 to 325033.
[2018-10-24 15:17:26,627 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 325033 states.
[2018-10-24 15:17:28,385 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 325033 states to 325033 states and 334916 transitions.
[2018-10-24 15:17:28,385 INFO  L78                 Accepts]: Start accepts. Automaton has 325033 states and 334916 transitions. Word has length 2010
[2018-10-24 15:17:28,385 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:17:28,386 INFO  L481      AbstractCegarLoop]: Abstraction has 325033 states and 334916 transitions.
[2018-10-24 15:17:28,386 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-24 15:17:28,386 INFO  L276                IsEmpty]: Start isEmpty. Operand 325033 states and 334916 transitions.
[2018-10-24 15:17:28,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2132
[2018-10-24 15:17:28,562 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:17:28,564 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 15:17:28,564 INFO  L424      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:17:28,564 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:17:28,565 INFO  L82        PathProgramCache]: Analyzing trace with hash -1334101301, now seen corresponding path program 1 times
[2018-10-24 15:17:28,565 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:17:28,565 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:17:28,566 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:28,566 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:17:28,566 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:28,690 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:17:31,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 812 backedges. 525 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked.
[2018-10-24 15:17:31,504 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:17:31,504 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-24 15:17:31,505 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:17:31,506 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:17:31,506 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:17:31,506 INFO  L87              Difference]: Start difference. First operand 325033 states and 334916 transitions. Second operand 4 states.
[2018-10-24 15:17:44,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 15:17:44,238 INFO  L93              Difference]: Finished difference Result 653479 states and 673303 transitions.
[2018-10-24 15:17:44,238 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:17:44,238 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2131
[2018-10-24 15:17:44,239 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 15:17:44,622 INFO  L225             Difference]: With dead ends: 653479
[2018-10-24 15:17:44,623 INFO  L226             Difference]: Without dead ends: 321613
[2018-10-24 15:17:44,779 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:17:45,040 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 321613 states.
[2018-10-24 15:17:48,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 321613 to 319895.
[2018-10-24 15:17:48,036 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 319895 states.
[2018-10-24 15:17:49,837 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 319895 states to 319895 states and 326555 transitions.
[2018-10-24 15:17:49,838 INFO  L78                 Accepts]: Start accepts. Automaton has 319895 states and 326555 transitions. Word has length 2131
[2018-10-24 15:17:49,838 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 15:17:49,838 INFO  L481      AbstractCegarLoop]: Abstraction has 319895 states and 326555 transitions.
[2018-10-24 15:17:49,838 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-24 15:17:49,838 INFO  L276                IsEmpty]: Start isEmpty. Operand 319895 states and 326555 transitions.
[2018-10-24 15:17:49,967 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2158
[2018-10-24 15:17:49,968 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 15:17:49,969 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2018-10-24 15:17:49,969 INFO  L424      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 15:17:49,969 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 15:17:49,970 INFO  L82        PathProgramCache]: Analyzing trace with hash -1242085809, now seen corresponding path program 1 times
[2018-10-24 15:17:49,970 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-24 15:17:49,970 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-24 15:17:49,971 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:49,971 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 15:17:49,971 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 15:17:50,091 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 15:17:57,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 948 backedges. 789 proven. 0 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked.
[2018-10-24 15:17:57,045 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 15:17:57,046 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-24 15:17:57,047 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-24 15:17:57,047 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-24 15:17:57,047 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-24 15:17:57,047 INFO  L87              Difference]: Start difference. First operand 319895 states and 326555 transitions. Second operand 4 states.
Received shutdown request...
[2018-10-24 15:18:00,404 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-24 15:18:00,404 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-24 15:18:00,411 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-24 15:18:00,411 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 03:18:00 BoogieIcfgContainer
[2018-10-24 15:18:00,411 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-24 15:18:00,412 INFO  L168              Benchmark]: Toolchain (without parser) took 214984.86 ms. Allocated memory was 1.5 GB in the beginning and 5.4 GB in the end (delta: 3.9 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,414 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,414 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3707.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 981.1 MB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,415 INFO  L168              Benchmark]: Boogie Procedure Inliner took 846.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 808.5 MB). Free memory was 981.1 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,416 INFO  L168              Benchmark]: Boogie Preprocessor took 369.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,417 INFO  L168              Benchmark]: RCFGBuilder took 14214.53 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 305.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -237.2 MB). Peak memory consumption was 843.5 MB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,418 INFO  L168              Benchmark]: TraceAbstraction took 195841.47 ms. Allocated memory was 2.6 GB in the beginning and 5.4 GB in the end (delta: 2.8 GB). Free memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB.
[2018-10-24 15:18:00,423 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3707.72 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 981.1 MB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 846.91 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 808.5 MB). Free memory was 981.1 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 369.66 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.2 MB). Peak memory consumption was 57.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14214.53 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 305.7 MB). Free memory was 2.1 GB in the beginning and 2.3 GB in the end (delta: -237.2 MB). Peak memory consumption was 843.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 195841.47 ms. Allocated memory was 2.6 GB in the beginning and 5.4 GB in the end (delta: 2.8 GB). Free memory was 2.3 GB in the beginning and 3.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11015]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11015). Cancelled while BasicCegarLoop was constructing difference of abstraction (319895states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (17780 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 195.7s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 133.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15154 SDtfs, 44437 SDslu, 2988 SDs, 0 SdLazy, 70475 SolverSat, 26204 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1737 GetRequests, 1712 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=326734occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 19.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 15489 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 2.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 7.5s InterpolantComputationTime, 20267 NumberOfCodeBlocks, 20267 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 20256 ConstructedInterpolants, 0 QuantifiedInterpolants, 55865025 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1881 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 3439/3444 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown