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_label46_true-unreach-call.c


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This is Ultimate 0.1.23-1dbac8b
[2018-10-26 20:23:10,863 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-26 20:23:10,865 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-26 20:23:10,877 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-26 20:23:10,877 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-26 20:23:10,878 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-26 20:23:10,879 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-10-26 20:23:10,886 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-26 20:23:10,887 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-26 20:23:10,888 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-26 20:23:10,888 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-26 20:23:10,889 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-26 20:23:10,891 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-26 20:23:10,896 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-26 20:23:10,898 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-26 20:23:10,899 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-26 20:23:10,900 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-26 20:23:10,902 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-26 20:23:10,903 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-26 20:23:10,904 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-26 20:23:10,905 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-26 20:23:10,906 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-26 20:23:10,909 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-26 20:23:10,911 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-26 20:23:10,911 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
[2018-10-26 20:23:10,925 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-26 20:23:10,926 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-26 20:23:10,926 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-26 20:23:10,927 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-26 20:23:10,927 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-26 20:23:10,927 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-26 20:23:10,928 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-26 20:23:10,928 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-26 20:23:10,928 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-26 20:23:10,928 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-26 20:23:10,928 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-26 20:23:10,929 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-26 20:23:10,929 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-26 20:23:10,929 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-26 20:23:10,929 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-26 20:23:10,929 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-26 20:23:10,930 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-26 20:23:10,930 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-26 20:23:10,930 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-26 20:23:10,930 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-26 20:23:10,931 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-26 20:23:10,931 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-26 20:23:10,931 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-26 20:23:10,931 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-26 20:23:10,931 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-26 20:23:10,931 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-26 20:23:10,932 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-26 20:23:10,932 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-26 20:23:10,979 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-26 20:23:10,991 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-26 20:23:10,995 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-26 20:23:10,997 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-26 20:23:10,997 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-26 20:23:10,998 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label46_true-unreach-call.c
[2018-10-26 20:23:11,060 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bed1315/4c898e3a07a545d798806b0c7c2d3da7/FLAGd2021b825
[2018-10-26 20:23:12,051 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-26 20:23:12,052 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label46_true-unreach-call.c
[2018-10-26 20:23:12,100 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bed1315/4c898e3a07a545d798806b0c7c2d3da7/FLAGd2021b825
[2018-10-26 20:23:12,121 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/68bed1315/4c898e3a07a545d798806b0c7c2d3da7
[2018-10-26 20:23:12,134 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-26 20:23:12,136 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-26 20:23:12,140 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-26 20:23:12,141 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-26 20:23:12,145 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-26 20:23:12,146 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:23:12" (1/1) ...
[2018-10-26 20:23:12,149 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f32220e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:12, skipping insertion in model container
[2018-10-26 20:23:12,150 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 08:23:12" (1/1) ...
[2018-10-26 20:23:12,162 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-26 20:23:12,472 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-26 20:23:14,616 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 20:23:14,621 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-26 20:23:15,874 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 20:23:15,954 INFO  L193         MainTranslator]: Completed translation
[2018-10-26 20:23:15,955 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15 WrapperNode
[2018-10-26 20:23:15,955 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-26 20:23:15,957 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-26 20:23:15,957 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-26 20:23:15,957 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-26 20:23:15,968 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:16,061 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:16,868 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-26 20:23:16,869 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-26 20:23:16,869 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-26 20:23:16,869 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-26 20:23:16,880 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:16,881 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:16,921 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:16,922 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:17,095 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:17,162 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:17,215 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (1/1) ...
[2018-10-26 20:23:17,273 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-26 20:23:17,274 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-26 20:23:17,274 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-26 20:23:17,274 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-26 20:23:17,275 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (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
[2018-10-26 20:23:17,343 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-26 20:23:17,343 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-26 20:23:17,343 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-26 20:23:33,349 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-26 20:23:33,349 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:23:33 BoogieIcfgContainer
[2018-10-26 20:23:33,350 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-26 20:23:33,351 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-26 20:23:33,351 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-26 20:23:33,354 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-26 20:23:33,355 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 08:23:12" (1/3) ...
[2018-10-26 20:23:33,355 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0292a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:23:33, skipping insertion in model container
[2018-10-26 20:23:33,356 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 08:23:15" (2/3) ...
[2018-10-26 20:23:33,356 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a0292a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 08:23:33, skipping insertion in model container
[2018-10-26 20:23:33,359 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 08:23:33" (3/3) ...
[2018-10-26 20:23:33,361 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label46_true-unreach-call.c
[2018-10-26 20:23:33,371 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-26 20:23:33,383 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-26 20:23:33,402 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-26 20:23:33,469 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-26 20:23:33,470 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-26 20:23:33,470 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-26 20:23:33,470 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-26 20:23:33,470 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-26 20:23:33,471 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-26 20:23:33,471 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-26 20:23:33,471 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-26 20:23:33,471 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-26 20:23:33,526 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-26 20:23:33,667 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1692
[2018-10-26 20:23:33,667 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:23:33,671 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 20:23:33,673 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:23:33,680 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:23:33,681 INFO  L82        PathProgramCache]: Analyzing trace with hash 1966720298, now seen corresponding path program 1 times
[2018-10-26 20:23:33,683 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:23:33,684 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:23:33,744 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:23:33,744 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:23:33,744 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:23:34,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:23:36,430 WARN  L179               SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-10-26 20:23:38,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 20:23:38,873 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:23:38,874 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 20:23:38,882 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 20:23:38,894 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 20:23:38,895 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:23:38,898 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-26 20:23:58,348 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:23:58,348 INFO  L93              Difference]: Finished difference Result 7917 states and 15105 transitions.
[2018-10-26 20:23:58,349 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 20:23:58,351 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1691
[2018-10-26 20:23:58,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:23:58,450 INFO  L225             Difference]: With dead ends: 7917
[2018-10-26 20:23:58,451 INFO  L226             Difference]: Without dead ends: 5724
[2018-10-26 20:23:58,475 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
[2018-10-26 20:23:58,510 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5724 states.
[2018-10-26 20:23:58,708 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5714.
[2018-10-26 20:23:58,710 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5714 states.
[2018-10-26 20:23:58,733 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 9355 transitions.
[2018-10-26 20:23:58,736 INFO  L78                 Accepts]: Start accepts. Automaton has 5714 states and 9355 transitions. Word has length 1691
[2018-10-26 20:23:58,741 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:23:58,741 INFO  L481      AbstractCegarLoop]: Abstraction has 5714 states and 9355 transitions.
[2018-10-26 20:23:58,741 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 20:23:58,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 5714 states and 9355 transitions.
[2018-10-26 20:23:59,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1710
[2018-10-26 20:23:59,047 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:23:59,050 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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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]
[2018-10-26 20:23:59,050 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:23:59,051 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:23:59,052 INFO  L82        PathProgramCache]: Analyzing trace with hash -708334106, now seen corresponding path program 1 times
[2018-10-26 20:23:59,052 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:23:59,052 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:23:59,053 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:23:59,054 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:23:59,054 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:23:59,242 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:24:00,975 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-10-26 20:24:00,976 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:24:00,976 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 20:24:00,982 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 20:24:00,983 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 20:24:00,983 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 20:24:00,983 INFO  L87              Difference]: Start difference. First operand 5714 states and 9355 transitions. Second operand 3 states.
[2018-10-26 20:24:12,877 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:24:12,877 INFO  L93              Difference]: Finished difference Result 16645 states and 27454 transitions.
[2018-10-26 20:24:12,878 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 20:24:12,878 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1709
[2018-10-26 20:24:12,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:24:12,941 INFO  L225             Difference]: With dead ends: 16645
[2018-10-26 20:24:12,941 INFO  L226             Difference]: Without dead ends: 10933
[2018-10-26 20:24:12,951 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
[2018-10-26 20:24:12,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10933 states.
[2018-10-26 20:24:13,182 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 10848.
[2018-10-26 20:24:13,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10848 states.
[2018-10-26 20:24:13,207 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10848 states to 10848 states and 16481 transitions.
[2018-10-26 20:24:13,208 INFO  L78                 Accepts]: Start accepts. Automaton has 10848 states and 16481 transitions. Word has length 1709
[2018-10-26 20:24:13,208 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:24:13,209 INFO  L481      AbstractCegarLoop]: Abstraction has 10848 states and 16481 transitions.
[2018-10-26 20:24:13,209 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 20:24:13,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 10848 states and 16481 transitions.
[2018-10-26 20:24:13,268 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1729
[2018-10-26 20:24:13,268 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:24:13,269 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 20:24:13,270 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:24:13,270 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:24:13,271 INFO  L82        PathProgramCache]: Analyzing trace with hash 666034035, now seen corresponding path program 1 times
[2018-10-26 20:24:13,271 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:24:13,272 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:24:13,273 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:13,273 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:24:13,273 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:13,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:24:15,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 20:24:15,128 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:24:15,128 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 20:24:15,130 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 20:24:15,130 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 20:24:15,131 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:24:15,131 INFO  L87              Difference]: Start difference. First operand 10848 states and 16481 transitions. Second operand 4 states.
[2018-10-26 20:24:31,529 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:24:31,530 INFO  L93              Difference]: Finished difference Result 42129 states and 64305 transitions.
[2018-10-26 20:24:31,530 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 20:24:31,530 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1728
[2018-10-26 20:24:31,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:24:31,641 INFO  L225             Difference]: With dead ends: 42129
[2018-10-26 20:24:31,642 INFO  L226             Difference]: Without dead ends: 31283
[2018-10-26 20:24:31,664 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:24:31,699 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31283 states.
[2018-10-26 20:24:32,173 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31283 to 31248.
[2018-10-26 20:24:32,173 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31248 states.
[2018-10-26 20:24:32,225 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31248 states to 31248 states and 43049 transitions.
[2018-10-26 20:24:32,226 INFO  L78                 Accepts]: Start accepts. Automaton has 31248 states and 43049 transitions. Word has length 1728
[2018-10-26 20:24:32,226 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:24:32,227 INFO  L481      AbstractCegarLoop]: Abstraction has 31248 states and 43049 transitions.
[2018-10-26 20:24:32,227 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 20:24:32,227 INFO  L276                IsEmpty]: Start isEmpty. Operand 31248 states and 43049 transitions.
[2018-10-26 20:24:32,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1777
[2018-10-26 20:24:32,321 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:24:32,323 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, 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, 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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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 20:24:32,323 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:24:32,323 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:24:32,324 INFO  L82        PathProgramCache]: Analyzing trace with hash -1151075381, now seen corresponding path program 1 times
[2018-10-26 20:24:32,324 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:24:32,324 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:24:32,326 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:32,326 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:24:32,326 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:32,445 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:24:34,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 121 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked.
[2018-10-26 20:24:34,047 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:24:34,048 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 20:24:34,050 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 20:24:34,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 20:24:34,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 20:24:34,050 INFO  L87              Difference]: Start difference. First operand 31248 states and 43049 transitions. Second operand 3 states.
[2018-10-26 20:24:43,014 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:24:43,014 INFO  L93              Difference]: Finished difference Result 91371 states and 125623 transitions.
[2018-10-26 20:24:43,015 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 20:24:43,015 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1776
[2018-10-26 20:24:43,015 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:24:43,134 INFO  L225             Difference]: With dead ends: 91371
[2018-10-26 20:24:43,134 INFO  L226             Difference]: Without dead ends: 60125
[2018-10-26 20:24:43,179 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
[2018-10-26 20:24:43,235 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60125 states.
[2018-10-26 20:24:43,973 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60125 to 60125.
[2018-10-26 20:24:43,973 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60125 states.
[2018-10-26 20:24:44,068 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60125 states to 60125 states and 79363 transitions.
[2018-10-26 20:24:44,069 INFO  L78                 Accepts]: Start accepts. Automaton has 60125 states and 79363 transitions. Word has length 1776
[2018-10-26 20:24:44,069 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:24:44,069 INFO  L481      AbstractCegarLoop]: Abstraction has 60125 states and 79363 transitions.
[2018-10-26 20:24:44,069 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 20:24:44,070 INFO  L276                IsEmpty]: Start isEmpty. Operand 60125 states and 79363 transitions.
[2018-10-26 20:24:44,174 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1878
[2018-10-26 20:24:44,174 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:24:44,175 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-26 20:24:44,176 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:24:44,176 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:24:44,177 INFO  L82        PathProgramCache]: Analyzing trace with hash 293522613, now seen corresponding path program 1 times
[2018-10-26 20:24:44,177 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:24:44,177 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:24:44,178 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:44,178 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:24:44,179 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:24:44,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:24:46,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 287 backedges. 125 proven. 5 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked.
[2018-10-26 20:24:46,897 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-26 20:24:46,897 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
[2018-10-26 20:24:46,906 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:24:47,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:24:47,483 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-26 20:24:48,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 287 backedges. 143 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked.
[2018-10-26 20:24:48,931 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-26 20:24:48,932 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2018-10-26 20:24:48,937 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-26 20:24:48,938 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-26 20:24:48,938 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2018-10-26 20:24:48,939 INFO  L87              Difference]: Start difference. First operand 60125 states and 79363 transitions. Second operand 5 states.
[2018-10-26 20:25:16,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:25:16,476 INFO  L93              Difference]: Finished difference Result 288574 states and 376064 transitions.
[2018-10-26 20:25:16,476 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-26 20:25:16,476 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1877
[2018-10-26 20:25:16,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:25:16,896 INFO  L225             Difference]: With dead ends: 288574
[2018-10-26 20:25:16,896 INFO  L226             Difference]: Without dead ends: 228451
[2018-10-26 20:25:17,009 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 1885 GetRequests, 1878 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2018-10-26 20:25:17,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 228451 states.
[2018-10-26 20:25:19,739 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 228451 to 228402.
[2018-10-26 20:25:19,739 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 228402 states.
[2018-10-26 20:25:20,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 228402 states to 228402 states and 260008 transitions.
[2018-10-26 20:25:20,061 INFO  L78                 Accepts]: Start accepts. Automaton has 228402 states and 260008 transitions. Word has length 1877
[2018-10-26 20:25:20,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:25:20,062 INFO  L481      AbstractCegarLoop]: Abstraction has 228402 states and 260008 transitions.
[2018-10-26 20:25:20,062 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-26 20:25:20,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 228402 states and 260008 transitions.
[2018-10-26 20:25:20,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1990
[2018-10-26 20:25:20,496 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:25:20,498 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-26 20:25:20,498 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:25:20,498 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:25:20,499 INFO  L82        PathProgramCache]: Analyzing trace with hash 202683292, now seen corresponding path program 1 times
[2018-10-26 20:25:20,499 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:25:20,500 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:25:20,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:25:20,501 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:25:20,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:25:20,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:25:24,394 INFO  L134       CoverageAnalysis]: Checked inductivity of 442 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked.
[2018-10-26 20:25:24,395 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:25:24,395 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-26 20:25:24,397 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 20:25:24,398 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 20:25:24,398 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:25:24,398 INFO  L87              Difference]: Start difference. First operand 228402 states and 260008 transitions. Second operand 4 states.
[2018-10-26 20:25:41,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:25:41,406 INFO  L93              Difference]: Finished difference Result 545215 states and 617567 transitions.
[2018-10-26 20:25:41,407 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 20:25:41,407 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1989
[2018-10-26 20:25:41,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:25:41,826 INFO  L225             Difference]: With dead ends: 545215
[2018-10-26 20:25:41,826 INFO  L226             Difference]: Without dead ends: 316815
[2018-10-26 20:25:41,960 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:25:42,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 316815 states.
[2018-10-26 20:25:45,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 316815 to 316756.
[2018-10-26 20:25:45,922 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 316756 states.
[2018-10-26 20:25:46,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 316756 states to 316756 states and 352444 transitions.
[2018-10-26 20:25:46,268 INFO  L78                 Accepts]: Start accepts. Automaton has 316756 states and 352444 transitions. Word has length 1989
[2018-10-26 20:25:46,269 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:25:46,269 INFO  L481      AbstractCegarLoop]: Abstraction has 316756 states and 352444 transitions.
[2018-10-26 20:25:46,269 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 20:25:46,269 INFO  L276                IsEmpty]: Start isEmpty. Operand 316756 states and 352444 transitions.
[2018-10-26 20:25:46,505 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2048
[2018-10-26 20:25:46,505 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:25:46,507 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, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 20:25:46,507 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:25:46,507 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:25:46,508 INFO  L82        PathProgramCache]: Analyzing trace with hash 1743479554, now seen corresponding path program 1 times
[2018-10-26 20:25:46,508 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:25:46,508 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:25:46,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:25:46,509 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:25:46,510 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:25:46,626 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:25:55,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 620 backedges. 374 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked.
[2018-10-26 20:25:55,246 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:25:55,246 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 20:25:55,248 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 20:25:55,248 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 20:25:55,248 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 20:25:55,249 INFO  L87              Difference]: Start difference. First operand 316756 states and 352444 transitions. Second operand 3 states.
[2018-10-26 20:26:05,316 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:26:05,316 INFO  L93              Difference]: Finished difference Result 624913 states and 694844 transitions.
[2018-10-26 20:26:05,326 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 20:26:05,326 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2047
[2018-10-26 20:26:05,327 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:26:05,750 INFO  L225             Difference]: With dead ends: 624913
[2018-10-26 20:26:05,750 INFO  L226             Difference]: Without dead ends: 303053
[2018-10-26 20:26:05,897 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
[2018-10-26 20:26:06,134 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 303053 states.
[2018-10-26 20:26:08,919 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 303053 to 301352.
[2018-10-26 20:26:08,919 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 301352 states.
[2018-10-26 20:26:09,190 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 301352 states to 301352 states and 322864 transitions.
[2018-10-26 20:26:09,190 INFO  L78                 Accepts]: Start accepts. Automaton has 301352 states and 322864 transitions. Word has length 2047
[2018-10-26 20:26:09,191 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:26:09,191 INFO  L481      AbstractCegarLoop]: Abstraction has 301352 states and 322864 transitions.
[2018-10-26 20:26:09,191 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 20:26:09,191 INFO  L276                IsEmpty]: Start isEmpty. Operand 301352 states and 322864 transitions.
[2018-10-26 20:26:09,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2078
[2018-10-26 20:26:09,345 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:26:09,346 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-26 20:26:09,346 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:26:09,346 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:26:09,347 INFO  L82        PathProgramCache]: Analyzing trace with hash 526333539, now seen corresponding path program 1 times
[2018-10-26 20:26:09,347 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:26:09,347 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:26:09,348 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:26:09,349 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:26:09,349 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:26:09,476 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 20:26:10,040 WARN  L179               SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11
[2018-10-26 20:26:12,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 743 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked.
[2018-10-26 20:26:12,872 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:26:12,872 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-26 20:26:12,873 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 20:26:12,873 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 20:26:12,874 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:26:12,874 INFO  L87              Difference]: Start difference. First operand 301352 states and 322864 transitions. Second operand 4 states.
[2018-10-26 20:26:29,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 20:26:29,395 INFO  L93              Difference]: Finished difference Result 750634 states and 808769 transitions.
[2018-10-26 20:26:29,395 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 20:26:29,395 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2077
[2018-10-26 20:26:29,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 20:26:29,944 INFO  L225             Difference]: With dead ends: 750634
[2018-10-26 20:26:29,944 INFO  L226             Difference]: Without dead ends: 449284
[2018-10-26 20:26:30,077 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:26:30,407 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 449284 states.
[2018-10-26 20:26:34,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 449284 to 447472.
[2018-10-26 20:26:34,572 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 447472 states.
[2018-10-26 20:26:35,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 447472 states to 447472 states and 474301 transitions.
[2018-10-26 20:26:35,005 INFO  L78                 Accepts]: Start accepts. Automaton has 447472 states and 474301 transitions. Word has length 2077
[2018-10-26 20:26:35,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 20:26:35,006 INFO  L481      AbstractCegarLoop]: Abstraction has 447472 states and 474301 transitions.
[2018-10-26 20:26:35,006 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 20:26:35,006 INFO  L276                IsEmpty]: Start isEmpty. Operand 447472 states and 474301 transitions.
[2018-10-26 20:26:36,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2285
[2018-10-26 20:26:36,752 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 20:26:36,754 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-26 20:26:36,754 INFO  L424      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 20:26:36,754 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 20:26:36,755 INFO  L82        PathProgramCache]: Analyzing trace with hash 954966533, now seen corresponding path program 1 times
[2018-10-26 20:26:36,755 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 20:26:36,755 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 20:26:36,756 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:26:36,756 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 20:26:36,756 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 20:26:36,910 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
Received shutdown request...
[2018-10-26 20:26:44,877 INFO  L134       CoverageAnalysis]: Checked inductivity of 1248 backedges. 900 proven. 0 refuted. 0 times theorem prover too weak. 348 trivial. 0 not checked.
[2018-10-26 20:26:44,878 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 20:26:44,878 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-26 20:26:44,879 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 20:26:44,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 20:26:44,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 20:26:44,880 INFO  L87              Difference]: Start difference. First operand 447472 states and 474301 transitions. Second operand 4 states.
[2018-10-26 20:26:44,881 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-10-26 20:26:44,881 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-26 20:26:44,886 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-26 20:26:44,886 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 08:26:44 BoogieIcfgContainer
[2018-10-26 20:26:44,886 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-26 20:26:44,887 INFO  L168              Benchmark]: Toolchain (without parser) took 212752.68 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 4.1 GB in the end (delta: -2.7 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,888 INFO  L168              Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,889 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3815.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.5 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,890 INFO  L168              Benchmark]: Boogie Procedure Inliner took 911.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 827.3 MB). Free memory was 978.5 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,891 INFO  L168              Benchmark]: Boogie Preprocessor took 405.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,892 INFO  L168              Benchmark]: RCFGBuilder took 16075.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 267.9 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -284.3 MB). Peak memory consumption was 911.4 MB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,893 INFO  L168              Benchmark]: TraceAbstraction took 191535.66 ms. Allocated memory was 2.6 GB in the beginning and 5.5 GB in the end (delta: 2.9 GB). Free memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB.
[2018-10-26 20:26:44,898 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3815.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 978.5 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 911.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 827.3 MB). Free memory was 978.5 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 405.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 53.5 MB). Peak memory consumption was 53.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 16075.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 267.9 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -284.3 MB). Peak memory consumption was 911.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 191535.66 ms. Allocated memory was 2.6 GB in the beginning and 5.5 GB in the end (delta: 2.9 GB). Free memory was 2.4 GB in the beginning and 4.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11114]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11114). Cancelled while BasicCegarLoop was constructing difference of abstraction (447472states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 191.4s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 130.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15607 SDtfs, 37482 SDslu, 3047 SDs, 0 SdLazy, 67737 SolverSat, 24483 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1911 GetRequests, 1890 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=447472occurred 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: 17.5s AutomataMinimizationTime, 8 MinimizatonAttempts, 3751 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 19055 NumberOfCodeBlocks, 19055 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 19045 ConstructedInterpolants, 0 QuantifiedInterpolants, 45769898 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2090 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3801/3806 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown