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_label56_true-unreach-call.c


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This is Ultimate 0.1.23-0fd1304
[2018-10-23 19:16:54,025 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-23 19:16:54,027 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-23 19:16:54,047 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-23 19:16:54,047 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-23 19:16:54,048 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-23 19:16:54,051 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-10-23 19:16:54,062 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-23 19:16:54,063 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-23 19:16:54,064 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-23 19:16:54,074 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-23 19:16:54,075 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-23 19:16:54,080 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-23 19:16:54,082 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-23 19:16:54,086 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-23 19:16:54,087 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-23 19:16:54,092 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-23 19:16:54,094 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-23 19:16:54,094 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-23 19:16:54,097 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-23 19:16:54,098 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-23 19:16:54,099 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-23 19:16:54,104 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-23 19:16:54,109 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-23 19:16:54,109 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
[2018-10-23 19:16:54,139 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-23 19:16:54,139 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-23 19:16:54,140 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-23 19:16:54,140 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-23 19:16:54,141 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-23 19:16:54,141 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-23 19:16:54,141 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-23 19:16:54,142 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-23 19:16:54,142 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-23 19:16:54,142 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-23 19:16:54,142 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-23 19:16:54,142 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-23 19:16:54,142 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-23 19:16:54,144 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-23 19:16:54,144 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-23 19:16:54,144 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-23 19:16:54,144 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-23 19:16:54,144 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-23 19:16:54,145 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-23 19:16:54,145 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 19:16:54,145 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-23 19:16:54,145 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-23 19:16:54,145 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-23 19:16:54,146 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-23 19:16:54,147 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-23 19:16:54,147 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-23 19:16:54,147 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-23 19:16:54,147 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-23 19:16:54,201 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-23 19:16:54,215 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-23 19:16:54,219 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-23 19:16:54,220 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-23 19:16:54,221 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-23 19:16:54,222 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label56_true-unreach-call.c
[2018-10-23 19:16:54,281 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d60ef369/9535a17004744a7d80c6242c6953b167/FLAGf1c3735fe
[2018-10-23 19:16:55,190 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-23 19:16:55,191 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label56_true-unreach-call.c
[2018-10-23 19:16:55,244 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d60ef369/9535a17004744a7d80c6242c6953b167/FLAGf1c3735fe
[2018-10-23 19:16:55,264 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/2d60ef369/9535a17004744a7d80c6242c6953b167
[2018-10-23 19:16:55,277 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-23 19:16:55,279 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-23 19:16:55,280 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-23 19:16:55,281 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-23 19:16:55,285 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-23 19:16:55,286 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:16:55" (1/1) ...
[2018-10-23 19:16:55,289 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42eff4c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:55, skipping insertion in model container
[2018-10-23 19:16:55,289 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:16:55" (1/1) ...
[2018-10-23 19:16:55,300 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-23 19:16:55,557 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-23 19:16:57,672 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:16:57,677 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-23 19:16:58,807 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:16:58,869 INFO  L193         MainTranslator]: Completed translation
[2018-10-23 19:16:58,869 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58 WrapperNode
[2018-10-23 19:16:58,870 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-23 19:16:58,870 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-23 19:16:58,871 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-23 19:16:58,871 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-23 19:16:58,880 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:16:58,972 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:16:59,772 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-23 19:16:59,772 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-23 19:16:59,773 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-23 19:16:59,773 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-23 19:16:59,785 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:16:59,786 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:16:59,858 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:16:59,859 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:17:00,066 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:17:00,134 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:17:00,179 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (1/1) ...
[2018-10-23 19:17:00,222 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-23 19:17:00,222 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-23 19:17:00,222 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-23 19:17:00,223 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-23 19:17:00,224 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (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
[2018-10-23 19:17:00,290 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-23 19:17:00,290 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-23 19:17:00,290 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-23 19:17:15,185 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-23 19:17:15,186 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:17:15 BoogieIcfgContainer
[2018-10-23 19:17:15,186 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-23 19:17:15,187 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-23 19:17:15,187 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-23 19:17:15,190 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-23 19:17:15,190 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:16:55" (1/3) ...
[2018-10-23 19:17:15,191 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567d1ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:17:15, skipping insertion in model container
[2018-10-23 19:17:15,192 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:16:58" (2/3) ...
[2018-10-23 19:17:15,192 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567d1ea0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:17:15, skipping insertion in model container
[2018-10-23 19:17:15,192 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:17:15" (3/3) ...
[2018-10-23 19:17:15,194 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label56_true-unreach-call.c
[2018-10-23 19:17:15,204 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-23 19:17:15,216 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-23 19:17:15,234 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-23 19:17:15,283 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-23 19:17:15,284 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-23 19:17:15,284 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-23 19:17:15,284 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-23 19:17:15,284 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-23 19:17:15,284 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-23 19:17:15,285 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-23 19:17:15,285 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-23 19:17:15,285 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-23 19:17:15,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-23 19:17:15,474 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1675
[2018-10-23 19:17:15,475 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:17:15,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:17:15,480 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:17:15,486 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:17:15,487 INFO  L82        PathProgramCache]: Analyzing trace with hash -1979438854, now seen corresponding path program 1 times
[2018-10-23 19:17:15,490 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:17:15,490 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:17:15,545 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:17:15,545 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:17:15,545 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:17:16,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:17:17,862 WARN  L179               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-10-23 19:17:20,353 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:17:20,356 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:17:20,357 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:17:20,366 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:17:20,378 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:17:20,378 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:17:20,380 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-23 19:17:42,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:17:42,238 INFO  L93              Difference]: Finished difference Result 7907 states and 15105 transitions.
[2018-10-23 19:17:42,239 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:17:42,241 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1674
[2018-10-23 19:17:42,250 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:17:42,313 INFO  L225             Difference]: With dead ends: 7907
[2018-10-23 19:17:42,313 INFO  L226             Difference]: Without dead ends: 5714
[2018-10-23 19:17:42,326 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:17:42,356 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5714 states.
[2018-10-23 19:17:42,716 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5695.
[2018-10-23 19:17:42,718 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5695 states.
[2018-10-23 19:17:42,741 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 9459 transitions.
[2018-10-23 19:17:42,743 INFO  L78                 Accepts]: Start accepts. Automaton has 5695 states and 9459 transitions. Word has length 1674
[2018-10-23 19:17:42,748 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:17:42,749 INFO  L481      AbstractCegarLoop]: Abstraction has 5695 states and 9459 transitions.
[2018-10-23 19:17:42,749 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:17:42,749 INFO  L276                IsEmpty]: Start isEmpty. Operand 5695 states and 9459 transitions.
[2018-10-23 19:17:43,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1694
[2018-10-23 19:17:43,028 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:17:43,030 INFO  L375         BasicCegarLoop]: trace histogram [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, 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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]
[2018-10-23 19:17:43,031 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:17:43,031 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:17:43,032 INFO  L82        PathProgramCache]: Analyzing trace with hash -322947892, now seen corresponding path program 1 times
[2018-10-23 19:17:43,032 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:17:43,032 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:17:43,034 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:17:43,034 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:17:43,034 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:17:43,280 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:17:44,804 WARN  L179               SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-10-23 19:17:45,080 WARN  L179               SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-10-23 19:17:45,444 WARN  L179               SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-10-23 19:17:57,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:17:57,154 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:17:57,155 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2018-10-23 19:17:57,159 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-10-23 19:17:57,159 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-10-23 19:17:57,159 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2018-10-23 19:17:57,160 INFO  L87              Difference]: Start difference. First operand 5695 states and 9459 transitions. Second operand 15 states.
[2018-10-23 19:18:30,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:18:30,971 INFO  L93              Difference]: Finished difference Result 18397 states and 31393 transitions.
[2018-10-23 19:18:30,972 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-10-23 19:18:30,972 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 1693
[2018-10-23 19:18:30,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:18:31,034 INFO  L225             Difference]: With dead ends: 18397
[2018-10-23 19:18:31,035 INFO  L226             Difference]: Without dead ends: 12704
[2018-10-23 19:18:31,045 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=347, Invalid=709, Unknown=0, NotChecked=0, Total=1056
[2018-10-23 19:18:31,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12704 states.
[2018-10-23 19:18:31,237 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12704 to 11747.
[2018-10-23 19:18:31,237 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11747 states.
[2018-10-23 19:18:31,260 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 16187 transitions.
[2018-10-23 19:18:31,260 INFO  L78                 Accepts]: Start accepts. Automaton has 11747 states and 16187 transitions. Word has length 1693
[2018-10-23 19:18:31,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:18:31,263 INFO  L481      AbstractCegarLoop]: Abstraction has 11747 states and 16187 transitions.
[2018-10-23 19:18:31,264 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-10-23 19:18:31,264 INFO  L276                IsEmpty]: Start isEmpty. Operand 11747 states and 16187 transitions.
[2018-10-23 19:18:31,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1821
[2018-10-23 19:18:31,314 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:18:31,315 INFO  L375         BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:18:31,316 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:18:31,316 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:18:31,317 INFO  L82        PathProgramCache]: Analyzing trace with hash 859195732, now seen corresponding path program 1 times
[2018-10-23 19:18:31,317 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:18:31,317 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:18:31,318 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:18:31,318 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:18:31,319 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:18:31,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:18:33,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 231 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2018-10-23 19:18:33,045 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:18:33,045 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:18:33,047 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:18:33,047 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:18:33,047 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:18:33,048 INFO  L87              Difference]: Start difference. First operand 11747 states and 16187 transitions. Second operand 4 states.
[2018-10-23 19:18:47,272 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:18:47,272 INFO  L93              Difference]: Finished difference Result 43946 states and 61314 transitions.
[2018-10-23 19:18:47,273 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:18:47,274 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1820
[2018-10-23 19:18:47,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:18:47,360 INFO  L225             Difference]: With dead ends: 43946
[2018-10-23 19:18:47,361 INFO  L226             Difference]: Without dead ends: 32201
[2018-10-23 19:18:47,385 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:18:47,416 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32201 states.
[2018-10-23 19:18:47,968 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32201 to 32191.
[2018-10-23 19:18:47,968 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32191 states.
[2018-10-23 19:18:48,014 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32191 states to 32191 states and 41081 transitions.
[2018-10-23 19:18:48,014 INFO  L78                 Accepts]: Start accepts. Automaton has 32191 states and 41081 transitions. Word has length 1820
[2018-10-23 19:18:48,015 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:18:48,015 INFO  L481      AbstractCegarLoop]: Abstraction has 32191 states and 41081 transitions.
[2018-10-23 19:18:48,015 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:18:48,015 INFO  L276                IsEmpty]: Start isEmpty. Operand 32191 states and 41081 transitions.
[2018-10-23 19:18:48,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1851
[2018-10-23 19:18:48,107 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:18:48,109 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:18:48,109 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:18:48,109 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:18:48,111 INFO  L82        PathProgramCache]: Analyzing trace with hash 713243680, now seen corresponding path program 1 times
[2018-10-23 19:18:48,111 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:18:48,111 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:18:48,112 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:18:48,112 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:18:48,113 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:18:48,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:18:50,070 INFO  L134       CoverageAnalysis]: Checked inductivity of 239 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-10-23 19:18:50,071 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:18:50,071 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 19:18:50,073 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:18:50,073 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:18:50,073 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:18:50,074 INFO  L87              Difference]: Start difference. First operand 32191 states and 41081 transitions. Second operand 3 states.
[2018-10-23 19:18:59,611 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:18:59,611 INFO  L93              Difference]: Finished difference Result 94964 states and 121445 transitions.
[2018-10-23 19:18:59,614 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:18:59,614 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1850
[2018-10-23 19:18:59,614 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:18:59,723 INFO  L225             Difference]: With dead ends: 94964
[2018-10-23 19:18:59,724 INFO  L226             Difference]: Without dead ends: 62775
[2018-10-23 19:18:59,763 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
[2018-10-23 19:18:59,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62775 states.
[2018-10-23 19:19:00,660 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62773.
[2018-10-23 19:19:00,661 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62773 states.
[2018-10-23 19:19:00,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62773 states to 62773 states and 75549 transitions.
[2018-10-23 19:19:00,747 INFO  L78                 Accepts]: Start accepts. Automaton has 62773 states and 75549 transitions. Word has length 1850
[2018-10-23 19:19:00,748 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:19:00,748 INFO  L481      AbstractCegarLoop]: Abstraction has 62773 states and 75549 transitions.
[2018-10-23 19:19:00,748 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:19:00,748 INFO  L276                IsEmpty]: Start isEmpty. Operand 62773 states and 75549 transitions.
[2018-10-23 19:19:00,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2045
[2018-10-23 19:19:00,859 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:19:00,860 INFO  L375         BasicCegarLoop]: trace histogram [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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:19:00,861 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:19:00,861 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:19:00,862 INFO  L82        PathProgramCache]: Analyzing trace with hash -922937479, now seen corresponding path program 1 times
[2018-10-23 19:19:00,862 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:19:00,862 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:19:00,863 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:00,863 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:19:00,863 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:00,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:19:03,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 581 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2018-10-23 19:19:03,500 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:19:03,500 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:19:03,502 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:19:03,502 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:19:03,502 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:19:03,502 INFO  L87              Difference]: Start difference. First operand 62773 states and 75549 transitions. Second operand 4 states.
[2018-10-23 19:19:17,111 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:19:17,112 INFO  L93              Difference]: Finished difference Result 127248 states and 153967 transitions.
[2018-10-23 19:19:17,112 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:19:17,112 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2044
[2018-10-23 19:19:17,113 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:19:17,228 INFO  L225             Difference]: With dead ends: 127248
[2018-10-23 19:19:17,228 INFO  L226             Difference]: Without dead ends: 53815
[2018-10-23 19:19:17,282 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
[2018-10-23 19:19:17,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53815 states.
[2018-10-23 19:19:17,926 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53815 to 53805.
[2018-10-23 19:19:17,926 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53805 states.
[2018-10-23 19:19:18,003 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53805 states to 53805 states and 58240 transitions.
[2018-10-23 19:19:18,003 INFO  L78                 Accepts]: Start accepts. Automaton has 53805 states and 58240 transitions. Word has length 2044
[2018-10-23 19:19:18,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:19:18,004 INFO  L481      AbstractCegarLoop]: Abstraction has 53805 states and 58240 transitions.
[2018-10-23 19:19:18,004 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:19:18,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 53805 states and 58240 transitions.
[2018-10-23 19:19:18,097 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2118
[2018-10-23 19:19:18,097 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:19:18,099 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:19:18,099 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:19:18,100 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:19:18,100 INFO  L82        PathProgramCache]: Analyzing trace with hash 744210386, now seen corresponding path program 1 times
[2018-10-23 19:19:18,101 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:19:18,101 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:19:18,102 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:18,102 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:19:18,102 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:18,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:19:19,197 WARN  L179               SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-10-23 19:19:19,455 WARN  L179               SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-10-23 19:19:19,869 WARN  L179               SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 24
[2018-10-23 19:19:26,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 623 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2018-10-23 19:19:26,172 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:19:26,172 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2018-10-23 19:19:26,173 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-23 19:19:26,174 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-23 19:19:26,174 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2018-10-23 19:19:26,174 INFO  L87              Difference]: Start difference. First operand 53805 states and 58240 transitions. Second operand 9 states.
[2018-10-23 19:19:42,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:19:42,481 INFO  L93              Difference]: Finished difference Result 110656 states and 119574 transitions.
[2018-10-23 19:19:42,481 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-23 19:19:42,481 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2117
[2018-10-23 19:19:42,482 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:19:42,565 INFO  L225             Difference]: With dead ends: 110656
[2018-10-23 19:19:42,565 INFO  L226             Difference]: Without dead ends: 56853
[2018-10-23 19:19:42,604 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2018-10-23 19:19:42,654 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56853 states.
[2018-10-23 19:19:43,221 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56853 to 56221.
[2018-10-23 19:19:43,221 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56221 states.
[2018-10-23 19:19:43,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56221 states to 56221 states and 60661 transitions.
[2018-10-23 19:19:43,304 INFO  L78                 Accepts]: Start accepts. Automaton has 56221 states and 60661 transitions. Word has length 2117
[2018-10-23 19:19:43,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:19:43,305 INFO  L481      AbstractCegarLoop]: Abstraction has 56221 states and 60661 transitions.
[2018-10-23 19:19:43,306 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-23 19:19:43,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 56221 states and 60661 transitions.
[2018-10-23 19:19:43,401 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2215
[2018-10-23 19:19:43,401 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:19:43,403 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:19:43,404 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:19:43,404 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:19:43,405 INFO  L82        PathProgramCache]: Analyzing trace with hash 1500401105, now seen corresponding path program 1 times
[2018-10-23 19:19:43,405 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:19:43,405 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:19:43,406 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:43,407 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:19:43,407 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:19:43,561 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:19:44,367 WARN  L179               SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 16
[2018-10-23 19:19:44,638 WARN  L179               SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 22
[2018-10-23 19:19:48,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 651 proven. 105 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-10-23 19:19:48,522 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-23 19:19:48,523 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
[2018-10-23 19:19:48,645 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:19:49,291 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:19:49,368 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-23 19:19:51,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-10-23 19:19:51,566 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-23 19:19:51,566 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2018-10-23 19:19:51,575 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-23 19:19:51,576 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-23 19:19:51,576 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2018-10-23 19:19:51,576 INFO  L87              Difference]: Start difference. First operand 56221 states and 60661 transitions. Second operand 9 states.
[2018-10-23 19:20:28,112 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:20:28,113 INFO  L93              Difference]: Finished difference Result 140882 states and 152197 transitions.
[2018-10-23 19:20:28,113 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2018-10-23 19:20:28,113 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2214
[2018-10-23 19:20:28,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:20:28,266 INFO  L225             Difference]: With dead ends: 140882
[2018-10-23 19:20:28,266 INFO  L226             Difference]: Without dead ends: 84663
[2018-10-23 19:20:28,303 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2248 GetRequests, 2227 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506
[2018-10-23 19:20:28,368 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84663 states.
[2018-10-23 19:20:29,431 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84663 to 74913.
[2018-10-23 19:20:29,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 74913 states.
[2018-10-23 19:20:29,536 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74913 states to 74913 states and 79896 transitions.
[2018-10-23 19:20:29,537 INFO  L78                 Accepts]: Start accepts. Automaton has 74913 states and 79896 transitions. Word has length 2214
[2018-10-23 19:20:29,537 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:20:29,537 INFO  L481      AbstractCegarLoop]: Abstraction has 74913 states and 79896 transitions.
[2018-10-23 19:20:29,538 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-23 19:20:29,538 INFO  L276                IsEmpty]: Start isEmpty. Operand 74913 states and 79896 transitions.
[2018-10-23 19:20:29,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2265
[2018-10-23 19:20:29,699 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:20:29,701 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-23 19:20:29,701 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:20:29,701 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:20:29,702 INFO  L82        PathProgramCache]: Analyzing trace with hash 286069166, now seen corresponding path program 1 times
[2018-10-23 19:20:29,702 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:20:29,702 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:20:29,703 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:20:29,703 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:20:29,703 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:20:29,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:20:33,043 INFO  L134       CoverageAnalysis]: Checked inductivity of 1349 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked.
[2018-10-23 19:20:33,043 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:20:33,044 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 19:20:33,046 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:20:33,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:20:33,046 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:20:33,046 INFO  L87              Difference]: Start difference. First operand 74913 states and 79896 transitions. Second operand 3 states.
[2018-10-23 19:20:41,190 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:20:41,190 INFO  L93              Difference]: Finished difference Result 190594 states and 204623 transitions.
[2018-10-23 19:20:41,191 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:20:41,191 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2264
[2018-10-23 19:20:41,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:20:41,347 INFO  L225             Difference]: With dead ends: 190594
[2018-10-23 19:20:41,347 INFO  L226             Difference]: Without dead ends: 115683
[2018-10-23 19:20:41,424 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
[2018-10-23 19:20:41,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 115683 states.
[2018-10-23 19:20:42,481 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 115683 to 115657.
[2018-10-23 19:20:42,482 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 115657 states.
[2018-10-23 19:20:42,588 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 115657 states to 115657 states and 123101 transitions.
[2018-10-23 19:20:42,588 INFO  L78                 Accepts]: Start accepts. Automaton has 115657 states and 123101 transitions. Word has length 2264
[2018-10-23 19:20:42,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:20:42,589 INFO  L481      AbstractCegarLoop]: Abstraction has 115657 states and 123101 transitions.
[2018-10-23 19:20:42,589 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:20:42,589 INFO  L276                IsEmpty]: Start isEmpty. Operand 115657 states and 123101 transitions.
[2018-10-23 19:20:43,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2273
[2018-10-23 19:20:43,011 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:20:43,012 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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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]
[2018-10-23 19:20:43,012 INFO  L424      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:20:43,013 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:20:43,014 INFO  L82        PathProgramCache]: Analyzing trace with hash 1377989795, now seen corresponding path program 1 times
[2018-10-23 19:20:43,014 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:20:43,014 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:20:43,015 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:20:43,015 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:20:43,015 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
Received shutdown request...
[2018-10-23 19:20:43,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unknown
[2018-10-23 19:20:43,194 INFO  L258   seRefinementStrategy]: Advancing trace checker
[2018-10-23 19:20:43,194 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-10-23 19:20:43,210 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:20:43,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:20:43,824 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-23 19:20:43,863 WARN  L187               SmtUtils]: Removed 1 from assertion stack
[2018-10-23 19:20:43,864 INFO  L177         TraceCheckSpWp]: Timeout while computing interpolants
[2018-10-23 19:20:44,065 WARN  L522      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2018-10-23 19:20:44,066 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-23 19:20:44,071 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-23 19:20:44,072 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:20:44 BoogieIcfgContainer
[2018-10-23 19:20:44,072 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-23 19:20:44,073 INFO  L168              Benchmark]: Toolchain (without parser) took 228795.19 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,077 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,078 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3589.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,078 INFO  L168              Benchmark]: Boogie Procedure Inliner took 901.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,079 INFO  L168              Benchmark]: Boogie Preprocessor took 449.58 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,083 INFO  L168              Benchmark]: RCFGBuilder took 14963.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 301.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -216.6 MB). Peak memory consumption was 853.6 MB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,084 INFO  L168              Benchmark]: TraceAbstraction took 208885.70 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -409.9 MB). Peak memory consumption was 916.0 MB. Max. memory is 7.1 GB.
[2018-10-23 19:20:44,096 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3589.55 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 901.73 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 867.7 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 449.58 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 58.2 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14963.66 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 301.5 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -216.6 MB). Peak memory consumption was 853.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 208885.70 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.4 GB in the beginning and 2.8 GB in the end (delta: -409.9 MB). Peak memory consumption was 916.0 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11063]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11063). Cancelled while BasicCegarLoop was analyzing trace of length 2273 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 208.7s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 155.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14568 SDtfs, 49502 SDslu, 7510 SDs, 0 SdLazy, 116976 SolverSat, 18534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 123.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2307 GetRequests, 2235 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 5.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=115657occurred in iteration=8, 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: 6.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 11406 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 11.7s InterpolantComputationTime, 17890 NumberOfCodeBlocks, 17890 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 17881 ConstructedInterpolants, 0 QuantifiedInterpolants, 135636487 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2401 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4670/4775 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown