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_label30_false-unreach-call.c


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This is Ultimate 0.1.23-1dbac8b
[2018-10-26 18:31:45,930 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-26 18:31:45,932 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-26 18:31:45,951 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-26 18:31:45,951 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-26 18:31:45,953 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-26 18:31:45,954 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-10-26 18:31:45,956 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-10-26 18:31:45,960 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2018-10-26 18:31:45,962 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-26 18:31:45,962 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-26 18:31:45,963 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-26 18:31:45,964 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-26 18:31:45,965 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-26 18:31:45,966 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-26 18:31:45,967 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-26 18:31:45,968 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-26 18:31:45,971 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-26 18:31:45,972 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-26 18:31:45,973 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-26 18:31:45,975 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-26 18:31:45,978 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-26 18:31:45,978 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-26 18:31:45,979 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-26 18:31:45,982 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-26 18:31:45,982 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-10-26 18:31:45,983 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-10-26 18:31:45,988 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-10-26 18:31:45,988 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-10-26 18:31:45,989 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
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[2018-10-26 18:31:45,990 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-26 18:31:45,992 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-26 18:31:45,992 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 18:31:46,022 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-26 18:31:46,022 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-26 18:31:46,023 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-26 18:31:46,023 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-26 18:31:46,024 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-26 18:31:46,025 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-26 18:31:46,025 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-26 18:31:46,025 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-26 18:31:46,025 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-26 18:31:46,025 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-26 18:31:46,025 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-26 18:31:46,026 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-26 18:31:46,026 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-26 18:31:46,026 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-26 18:31:46,026 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-26 18:31:46,026 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-26 18:31:46,027 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-26 18:31:46,028 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-26 18:31:46,028 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-26 18:31:46,028 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-26 18:31:46,028 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-26 18:31:46,029 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-26 18:31:46,029 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-26 18:31:46,029 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-26 18:31:46,029 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-26 18:31:46,029 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-26 18:31:46,030 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-26 18:31:46,030 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-26 18:31:46,078 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-26 18:31:46,091 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-26 18:31:46,096 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-26 18:31:46,098 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-26 18:31:46,098 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-26 18:31:46,099 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label30_false-unreach-call.c
[2018-10-26 18:31:46,169 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9bcb3e79/f4b85bf361e14ff386d9ed5a10b3be4d/FLAG61d3b45f9
[2018-10-26 18:31:47,147 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-26 18:31:47,148 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label30_false-unreach-call.c
[2018-10-26 18:31:47,193 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9bcb3e79/f4b85bf361e14ff386d9ed5a10b3be4d/FLAG61d3b45f9
[2018-10-26 18:31:47,209 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c9bcb3e79/f4b85bf361e14ff386d9ed5a10b3be4d
[2018-10-26 18:31:47,222 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-26 18:31:47,223 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-26 18:31:47,224 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-26 18:31:47,225 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-26 18:31:47,229 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-26 18:31:47,230 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:31:47" (1/1) ...
[2018-10-26 18:31:47,233 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52648012 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:47, skipping insertion in model container
[2018-10-26 18:31:47,233 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 06:31:47" (1/1) ...
[2018-10-26 18:31:47,243 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-26 18:31:47,513 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-26 18:31:49,562 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 18:31:49,567 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-26 18:31:50,840 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 18:31:50,914 INFO  L193         MainTranslator]: Completed translation
[2018-10-26 18:31:50,915 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50 WrapperNode
[2018-10-26 18:31:50,915 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-26 18:31:50,916 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-26 18:31:50,916 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-26 18:31:50,916 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-26 18:31:50,927 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:51,009 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:51,988 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-26 18:31:51,990 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-26 18:31:51,991 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-26 18:31:51,991 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-26 18:31:52,003 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,003 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,077 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,078 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,251 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,324 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,385 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (1/1) ...
[2018-10-26 18:31:52,432 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-26 18:31:52,432 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-26 18:31:52,433 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-26 18:31:52,433 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-26 18:31:52,434 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (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 18:31:52,498 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-26 18:31:52,498 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-26 18:31:52,498 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-26 18:32:06,962 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-26 18:32:06,962 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:32:06 BoogieIcfgContainer
[2018-10-26 18:32:06,963 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-26 18:32:06,964 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-26 18:32:06,964 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-26 18:32:06,979 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-26 18:32:06,980 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 06:31:47" (1/3) ...
[2018-10-26 18:32:06,982 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327dc2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:32:06, skipping insertion in model container
[2018-10-26 18:32:06,983 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 06:31:50" (2/3) ...
[2018-10-26 18:32:06,983 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327dc2ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 06:32:06, skipping insertion in model container
[2018-10-26 18:32:06,986 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 06:32:06" (3/3) ...
[2018-10-26 18:32:06,991 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label30_false-unreach-call.c
[2018-10-26 18:32:07,003 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-26 18:32:07,016 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-26 18:32:07,035 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-26 18:32:07,097 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-26 18:32:07,097 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-26 18:32:07,098 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-26 18:32:07,098 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-26 18:32:07,098 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-26 18:32:07,098 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-26 18:32:07,098 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-26 18:32:07,098 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-26 18:32:07,098 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-26 18:32:07,159 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-26 18:32:07,296 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1656
[2018-10-26 18:32:07,297 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:32:07,299 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]
[2018-10-26 18:32:07,303 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:32:07,309 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:32:07,310 INFO  L82        PathProgramCache]: Analyzing trace with hash 663367322, now seen corresponding path program 1 times
[2018-10-26 18:32:07,313 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:32:07,313 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:32:07,365 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:07,365 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:32:07,365 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:07,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:32:10,161 WARN  L179               SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-10-26 18:32:12,732 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 18:32:12,734 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:32:12,735 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 18:32:12,743 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 18:32:12,757 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 18:32:12,758 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 18:32:12,760 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-26 18:32:33,488 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:32:33,489 INFO  L93              Difference]: Finished difference Result 7917 states and 15105 transitions.
[2018-10-26 18:32:33,489 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 18:32:33,491 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1655
[2018-10-26 18:32:33,501 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:32:33,564 INFO  L225             Difference]: With dead ends: 7917
[2018-10-26 18:32:33,565 INFO  L226             Difference]: Without dead ends: 5724
[2018-10-26 18:32:33,577 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 18:32:33,609 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5724 states.
[2018-10-26 18:32:33,816 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5724 to 5714.
[2018-10-26 18:32:33,818 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5714 states.
[2018-10-26 18:32:33,842 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5714 states to 5714 states and 9355 transitions.
[2018-10-26 18:32:33,844 INFO  L78                 Accepts]: Start accepts. Automaton has 5714 states and 9355 transitions. Word has length 1655
[2018-10-26 18:32:33,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:32:33,849 INFO  L481      AbstractCegarLoop]: Abstraction has 5714 states and 9355 transitions.
[2018-10-26 18:32:33,849 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 18:32:33,849 INFO  L276                IsEmpty]: Start isEmpty. Operand 5714 states and 9355 transitions.
[2018-10-26 18:32:34,140 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1674
[2018-10-26 18:32:34,141 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:32:34,144 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]
[2018-10-26 18:32:34,145 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:32:34,145 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:32:34,146 INFO  L82        PathProgramCache]: Analyzing trace with hash 1600898390, now seen corresponding path program 1 times
[2018-10-26 18:32:34,146 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:32:34,146 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:32:34,148 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:34,149 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:32:34,149 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:34,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:32:35,899 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 18:32:35,900 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:32:35,900 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 18:32:35,904 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 18:32:35,905 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 18:32:35,905 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 18:32:35,905 INFO  L87              Difference]: Start difference. First operand 5714 states and 9355 transitions. Second operand 3 states.
[2018-10-26 18:32:48,874 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:32:48,874 INFO  L93              Difference]: Finished difference Result 16645 states and 27454 transitions.
[2018-10-26 18:32:48,874 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 18:32:48,875 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1673
[2018-10-26 18:32:48,875 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:32:48,929 INFO  L225             Difference]: With dead ends: 16645
[2018-10-26 18:32:48,929 INFO  L226             Difference]: Without dead ends: 10933
[2018-10-26 18:32:48,937 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 18:32:48,947 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10933 states.
[2018-10-26 18:32:49,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 10848.
[2018-10-26 18:32:49,120 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10848 states.
[2018-10-26 18:32:49,143 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10848 states to 10848 states and 16481 transitions.
[2018-10-26 18:32:49,144 INFO  L78                 Accepts]: Start accepts. Automaton has 10848 states and 16481 transitions. Word has length 1673
[2018-10-26 18:32:49,144 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:32:49,144 INFO  L481      AbstractCegarLoop]: Abstraction has 10848 states and 16481 transitions.
[2018-10-26 18:32:49,144 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 18:32:49,145 INFO  L276                IsEmpty]: Start isEmpty. Operand 10848 states and 16481 transitions.
[2018-10-26 18:32:49,197 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2018-10-26 18:32:49,197 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:32:49,199 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]
[2018-10-26 18:32:49,199 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:32:49,199 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:32:49,200 INFO  L82        PathProgramCache]: Analyzing trace with hash 1098594659, now seen corresponding path program 1 times
[2018-10-26 18:32:49,201 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:32:49,201 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:32:49,202 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:49,203 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:32:49,203 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:32:49,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:32:50,954 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 18:32:50,955 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:32:50,955 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 18:32:50,957 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 18:32:50,958 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 18:32:50,958 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 18:32:50,958 INFO  L87              Difference]: Start difference. First operand 10848 states and 16481 transitions. Second operand 4 states.
[2018-10-26 18:33:06,137 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:33:06,138 INFO  L93              Difference]: Finished difference Result 42129 states and 64305 transitions.
[2018-10-26 18:33:06,138 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 18:33:06,138 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692
[2018-10-26 18:33:06,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:33:06,223 INFO  L225             Difference]: With dead ends: 42129
[2018-10-26 18:33:06,224 INFO  L226             Difference]: Without dead ends: 31283
[2018-10-26 18:33:06,241 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 18:33:06,266 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31283 states.
[2018-10-26 18:33:06,742 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31283 to 31248.
[2018-10-26 18:33:06,742 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31248 states.
[2018-10-26 18:33:06,791 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31248 states to 31248 states and 43049 transitions.
[2018-10-26 18:33:06,791 INFO  L78                 Accepts]: Start accepts. Automaton has 31248 states and 43049 transitions. Word has length 1692
[2018-10-26 18:33:06,792 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:33:06,792 INFO  L481      AbstractCegarLoop]: Abstraction has 31248 states and 43049 transitions.
[2018-10-26 18:33:06,792 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 18:33:06,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 31248 states and 43049 transitions.
[2018-10-26 18:33:06,883 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1694
[2018-10-26 18:33:06,884 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:33:06,886 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 18:33:06,887 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:33:06,887 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:33:06,887 INFO  L82        PathProgramCache]: Analyzing trace with hash -1124875781, now seen corresponding path program 1 times
[2018-10-26 18:33:06,888 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:33:06,891 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:33:06,892 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:06,892 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:33:06,892 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:07,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:33:08,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 18:33:08,426 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:33:08,426 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 18:33:08,428 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 18:33:08,428 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 18:33:08,428 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 18:33:08,429 INFO  L87              Difference]: Start difference. First operand 31248 states and 43049 transitions. Second operand 3 states.
[2018-10-26 18:33:17,850 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:33:17,851 INFO  L93              Difference]: Finished difference Result 91371 states and 125623 transitions.
[2018-10-26 18:33:17,851 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 18:33:17,851 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1693
[2018-10-26 18:33:17,851 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:33:17,983 INFO  L225             Difference]: With dead ends: 91371
[2018-10-26 18:33:17,983 INFO  L226             Difference]: Without dead ends: 60125
[2018-10-26 18:33:18,032 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 18:33:18,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 60125 states.
[2018-10-26 18:33:18,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 60125 to 60125.
[2018-10-26 18:33:18,828 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60125 states.
[2018-10-26 18:33:18,936 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60125 states to 60125 states and 79363 transitions.
[2018-10-26 18:33:18,936 INFO  L78                 Accepts]: Start accepts. Automaton has 60125 states and 79363 transitions. Word has length 1693
[2018-10-26 18:33:18,937 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:33:18,937 INFO  L481      AbstractCegarLoop]: Abstraction has 60125 states and 79363 transitions.
[2018-10-26 18:33:18,937 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 18:33:18,937 INFO  L276                IsEmpty]: Start isEmpty. Operand 60125 states and 79363 transitions.
[2018-10-26 18:33:19,067 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1722
[2018-10-26 18:33:19,067 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:33:19,069 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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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]
[2018-10-26 18:33:19,069 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:33:19,069 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:33:19,070 INFO  L82        PathProgramCache]: Analyzing trace with hash -1273525089, now seen corresponding path program 1 times
[2018-10-26 18:33:19,070 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:33:19,071 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:33:19,073 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:19,074 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:33:19,074 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:19,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:33:21,220 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 74 proven. 5 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2018-10-26 18:33:21,221 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-26 18:33:21,221 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 18:33:21,232 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:33:21,667 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:33:21,729 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-26 18:33:23,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 104 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2018-10-26 18:33:23,732 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-26 18:33:23,732 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5
[2018-10-26 18:33:23,737 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-26 18:33:23,737 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-26 18:33:23,737 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2018-10-26 18:33:23,738 INFO  L87              Difference]: Start difference. First operand 60125 states and 79363 transitions. Second operand 5 states.
[2018-10-26 18:33:53,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:33:53,181 INFO  L93              Difference]: Finished difference Result 288574 states and 376064 transitions.
[2018-10-26 18:33:53,181 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-26 18:33:53,181 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1721
[2018-10-26 18:33:53,181 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:33:53,571 INFO  L225             Difference]: With dead ends: 288574
[2018-10-26 18:33:53,571 INFO  L226             Difference]: Without dead ends: 228451
[2018-10-26 18:33:53,649 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 1729 GetRequests, 1722 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2018-10-26 18:33:53,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 228451 states.
[2018-10-26 18:33:56,017 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 228451 to 228402.
[2018-10-26 18:33:56,018 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 228402 states.
[2018-10-26 18:33:56,326 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 228402 states to 228402 states and 260008 transitions.
[2018-10-26 18:33:56,327 INFO  L78                 Accepts]: Start accepts. Automaton has 228402 states and 260008 transitions. Word has length 1721
[2018-10-26 18:33:56,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:33:56,328 INFO  L481      AbstractCegarLoop]: Abstraction has 228402 states and 260008 transitions.
[2018-10-26 18:33:56,328 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-26 18:33:56,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 228402 states and 260008 transitions.
[2018-10-26 18:33:56,631 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1812
[2018-10-26 18:33:56,632 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:33:56,633 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-26 18:33:56,633 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:33:56,634 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:33:56,634 INFO  L82        PathProgramCache]: Analyzing trace with hash -2075048859, now seen corresponding path program 1 times
[2018-10-26 18:33:56,634 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:33:56,635 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:33:56,636 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:56,637 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:33:56,637 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:33:56,744 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:33:58,048 WARN  L179               SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7
[2018-10-26 18:33:58,295 WARN  L179               SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 7
[2018-10-26 18:34:00,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 221 backedges. 114 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked.
[2018-10-26 18:34:00,321 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:34:00,321 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-10-26 18:34:00,322 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-26 18:34:00,322 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-26 18:34:00,322 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-10-26 18:34:00,323 INFO  L87              Difference]: Start difference. First operand 228402 states and 260008 transitions. Second operand 5 states.
[2018-10-26 18:34:17,337 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:34:17,338 INFO  L93              Difference]: Finished difference Result 530101 states and 606377 transitions.
[2018-10-26 18:34:17,338 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 18:34:17,338 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1811
[2018-10-26 18:34:17,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:34:17,692 INFO  L225             Difference]: With dead ends: 530101
[2018-10-26 18:34:17,693 INFO  L226             Difference]: Without dead ends: 301701
[2018-10-26 18:34:17,856 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2018-10-26 18:34:18,142 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 301701 states.
[2018-10-26 18:34:20,923 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 301701 to 301459.
[2018-10-26 18:34:20,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 301459 states.
[2018-10-26 18:34:21,194 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 301459 states to 301459 states and 336291 transitions.
[2018-10-26 18:34:21,195 INFO  L78                 Accepts]: Start accepts. Automaton has 301459 states and 336291 transitions. Word has length 1811
[2018-10-26 18:34:21,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:34:21,195 INFO  L481      AbstractCegarLoop]: Abstraction has 301459 states and 336291 transitions.
[2018-10-26 18:34:21,196 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-26 18:34:21,196 INFO  L276                IsEmpty]: Start isEmpty. Operand 301459 states and 336291 transitions.
[2018-10-26 18:34:21,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1844
[2018-10-26 18:34:21,344 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:34:21,345 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, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 18:34:21,345 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:34:21,345 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:34:21,346 INFO  L82        PathProgramCache]: Analyzing trace with hash -1459728606, now seen corresponding path program 1 times
[2018-10-26 18:34:21,346 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:34:21,346 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:34:21,347 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:34:21,348 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:34:21,348 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:34:21,460 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:34:26,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 267 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked.
[2018-10-26 18:34:26,047 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:34:26,048 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-26 18:34:26,049 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-26 18:34:26,050 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-26 18:34:26,050 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-26 18:34:26,050 INFO  L87              Difference]: Start difference. First operand 301459 states and 336291 transitions. Second operand 3 states.
[2018-10-26 18:34:36,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:34:36,016 INFO  L93              Difference]: Finished difference Result 597716 states and 665990 transitions.
[2018-10-26 18:34:36,016 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 18:34:36,016 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1843
[2018-10-26 18:34:36,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:34:36,358 INFO  L225             Difference]: With dead ends: 597716
[2018-10-26 18:34:36,359 INFO  L226             Difference]: Without dead ends: 289426
[2018-10-26 18:34:36,474 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 18:34:36,664 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 289426 states.
[2018-10-26 18:34:46,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 289426 to 286026.
[2018-10-26 18:34:46,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 286026 states.
[2018-10-26 18:34:46,964 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 286026 states to 286026 states and 306659 transitions.
[2018-10-26 18:34:46,964 INFO  L78                 Accepts]: Start accepts. Automaton has 286026 states and 306659 transitions. Word has length 1843
[2018-10-26 18:34:46,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:34:46,965 INFO  L481      AbstractCegarLoop]: Abstraction has 286026 states and 306659 transitions.
[2018-10-26 18:34:46,965 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-26 18:34:46,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 286026 states and 306659 transitions.
[2018-10-26 18:34:47,126 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2042
[2018-10-26 18:34:47,127 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:34:47,128 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, 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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]
[2018-10-26 18:34:47,128 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:34:47,128 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:34:47,129 INFO  L82        PathProgramCache]: Analyzing trace with hash 482363475, now seen corresponding path program 1 times
[2018-10-26 18:34:47,129 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:34:47,129 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:34:47,130 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:34:47,130 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:34:47,130 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:34:47,240 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 18:34:48,074 WARN  L179               SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11
[2018-10-26 18:34:50,559 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 18:34:50,559 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:34:50,559 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-26 18:34:50,561 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 18:34:50,561 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 18:34:50,561 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 18:34:50,561 INFO  L87              Difference]: Start difference. First operand 286026 states and 306659 transitions. Second operand 4 states.
[2018-10-26 18:35:07,317 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 18:35:07,317 INFO  L93              Difference]: Finished difference Result 743763 states and 798871 transitions.
[2018-10-26 18:35:07,317 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 18:35:07,317 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2041
[2018-10-26 18:35:07,318 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 18:35:07,875 INFO  L225             Difference]: With dead ends: 743763
[2018-10-26 18:35:07,876 INFO  L226             Difference]: Without dead ends: 454331
[2018-10-26 18:35:07,984 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 18:35:08,277 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 454331 states.
[2018-10-26 18:35:12,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 454331 to 452522.
[2018-10-26 18:35:12,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 452522 states.
[2018-10-26 18:35:13,275 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 452522 states to 452522 states and 477091 transitions.
[2018-10-26 18:35:13,276 INFO  L78                 Accepts]: Start accepts. Automaton has 452522 states and 477091 transitions. Word has length 2041
[2018-10-26 18:35:13,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 18:35:13,276 INFO  L481      AbstractCegarLoop]: Abstraction has 452522 states and 477091 transitions.
[2018-10-26 18:35:13,276 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 18:35:13,276 INFO  L276                IsEmpty]: Start isEmpty. Operand 452522 states and 477091 transitions.
[2018-10-26 18:35:14,968 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2220
[2018-10-26 18:35:14,968 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 18:35:14,970 INFO  L375         BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-26 18:35:14,970 INFO  L424      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 18:35:14,970 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 18:35:14,971 INFO  L82        PathProgramCache]: Analyzing trace with hash 530043481, now seen corresponding path program 1 times
[2018-10-26 18:35:14,971 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 18:35:14,971 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 18:35:14,972 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:35:14,972 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 18:35:14,972 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 18:35:15,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
Received shutdown request...
[2018-10-26 18:35:18,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 1325 backedges. 995 proven. 0 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked.
[2018-10-26 18:35:18,597 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 18:35:18,597 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-26 18:35:18,598 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 18:35:18,598 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 18:35:18,598 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 18:35:18,599 INFO  L87              Difference]: Start difference. First operand 452522 states and 477091 transitions. Second operand 4 states.
[2018-10-26 18:35:18,599 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-10-26 18:35:18,600 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-26 18:35:18,604 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-26 18:35:18,604 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 06:35:18 BoogieIcfgContainer
[2018-10-26 18:35:18,605 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-26 18:35:18,605 INFO  L168              Benchmark]: Toolchain (without parser) took 211383.22 ms. Allocated memory was 1.5 GB in the beginning and 5.0 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.2 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,609 INFO  L168              Benchmark]: CDTParser took 0.24 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.
[2018-10-26 18:35:18,610 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3690.93 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: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,610 INFO  L168              Benchmark]: Boogie Procedure Inliner took 1074.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,611 INFO  L168              Benchmark]: Boogie Preprocessor took 441.64 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: 68.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,612 INFO  L168              Benchmark]: RCFGBuilder took 14530.33 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 255.9 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -294.6 MB). Peak memory consumption was 922.5 MB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,613 INFO  L168              Benchmark]: TraceAbstraction took 191641.02 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.5 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB.
[2018-10-26 18:35:18,619 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3690.93 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: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 1074.21 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 886.0 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 441.64 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: 68.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14530.33 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 255.9 MB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -294.6 MB). Peak memory consumption was 922.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 191641.02 ms. Allocated memory was 2.7 GB in the beginning and 5.0 GB in the end (delta: 2.3 GB). Free memory was 2.5 GB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11006]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11006). Cancelled while BasicCegarLoop was constructing difference of abstraction (452522states) 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, 191.5s OverallTime, 9 OverallIterations, 7 TraceHistogramMax, 134.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 15453 SDtfs, 35825 SDslu, 3314 SDs, 0 SdLazy, 68859 SolverSat, 24234 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 100.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1760 GetRequests, 1734 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=452522occurred 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: 23.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 5630 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.3s InterpolantComputationTime, 18069 NumberOfCodeBlocks, 18069 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 18059 ConstructedInterpolants, 0 QuantifiedInterpolants, 41967342 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1902 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 2854/2859 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown