java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label54_true-unreach-call.c


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This is Ultimate 0.1.23-df4b876
[2018-11-06 20:19:16,979 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-11-06 20:19:16,982 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-11-06 20:19:16,997 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-06 20:19:17,000 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
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[2018-11-06 20:19:17,013 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
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[2018-11-06 20:19:17,018 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-11-06 20:19:17,018 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-06 20:19:17,027 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-06 20:19:17,031 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
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[2018-11-06 20:19:17,036 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2018-11-06 20:19:17,041 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2018-11-06 20:19:17,053 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-11-06 20:19:17,056 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-11-06 20:19:17,079 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-06 20:19:17,079 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-06 20:19:17,080 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-06 20:19:17,080 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-11-06 20:19:17,081 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-11-06 20:19:17,081 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-11-06 20:19:17,081 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-11-06 20:19:17,081 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-06 20:19:17,082 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-06 20:19:17,083 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-06 20:19:17,083 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-06 20:19:17,083 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-06 20:19:17,083 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-06 20:19:17,083 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-06 20:19:17,084 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-06 20:19:17,084 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-06 20:19:17,084 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-06 20:19:17,084 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-06 20:19:17,084 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-11-06 20:19:17,084 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-06 20:19:17,085 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-06 20:19:17,085 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-11-06 20:19:17,085 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-11-06 20:19:17,130 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-06 20:19:17,146 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-06 20:19:17,150 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-06 20:19:17,153 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-06 20:19:17,154 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-06 20:19:17,155 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label54_true-unreach-call.c
[2018-11-06 20:19:17,228 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfde5d518/d06dfef3fba64ad5bd2456d8356b43d0/FLAG608da7fd8
[2018-11-06 20:19:18,203 INFO  L298              CDTParser]: Found 1 translation units.
[2018-11-06 20:19:18,207 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label54_true-unreach-call.c
[2018-11-06 20:19:18,267 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfde5d518/d06dfef3fba64ad5bd2456d8356b43d0/FLAG608da7fd8
[2018-11-06 20:19:18,288 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dfde5d518/d06dfef3fba64ad5bd2456d8356b43d0
[2018-11-06 20:19:18,299 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-06 20:19:18,301 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-06 20:19:18,302 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-06 20:19:18,302 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-06 20:19:18,306 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-06 20:19:18,307 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:19:18" (1/1) ...
[2018-11-06 20:19:18,310 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ccaad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:18, skipping insertion in model container
[2018-11-06 20:19:18,311 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:19:18" (1/1) ...
[2018-11-06 20:19:18,322 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-06 20:19:18,577 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-11-06 20:19:20,751 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:19:20,757 INFO  L189         MainTranslator]: Completed pre-run
[2018-11-06 20:19:22,030 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:19:22,107 INFO  L193         MainTranslator]: Completed translation
[2018-11-06 20:19:22,108 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22 WrapperNode
[2018-11-06 20:19:22,108 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-06 20:19:22,109 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-11-06 20:19:22,109 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-11-06 20:19:22,110 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-11-06 20:19:22,122 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:22,625 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:22,945 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-11-06 20:19:22,946 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-06 20:19:22,946 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-06 20:19:22,946 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-06 20:19:22,958 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:22,958 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,004 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,006 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,176 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,258 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,308 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
[2018-11-06 20:19:23,357 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-06 20:19:23,358 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-06 20:19:23,358 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-06 20:19:23,358 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-06 20:19:23,359 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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
[2018-11-06 20:19:23,430 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-06 20:19:23,430 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-06 20:19:23,431 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-06 20:19:38,078 INFO  L276             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-06 20:19:38,079 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:19:38 BoogieIcfgContainer
[2018-11-06 20:19:38,079 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-06 20:19:38,080 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-06 20:19:38,080 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-06 20:19:38,083 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-06 20:19:38,084 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:19:18" (1/3) ...
[2018-11-06 20:19:38,085 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e485e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:19:38, skipping insertion in model container
[2018-11-06 20:19:38,085 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:19:22" (2/3) ...
[2018-11-06 20:19:38,085 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e485e9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:19:38, skipping insertion in model container
[2018-11-06 20:19:38,086 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:19:38" (3/3) ...
[2018-11-06 20:19:38,088 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label54_true-unreach-call.c
[2018-11-06 20:19:38,098 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-06 20:19:38,109 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-06 20:19:38,129 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-06 20:19:38,181 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-11-06 20:19:38,182 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-06 20:19:38,182 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-06 20:19:38,182 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-06 20:19:38,182 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-06 20:19:38,182 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-06 20:19:38,182 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-06 20:19:38,183 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-06 20:19:38,183 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-06 20:19:38,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-11-06 20:19:38,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1678
[2018-11-06 20:19:38,373 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:19:38,376 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]
[2018-11-06 20:19:38,379 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:19:38,385 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:19:38,386 INFO  L82        PathProgramCache]: Analyzing trace with hash 451964914, now seen corresponding path program 1 times
[2018-11-06 20:19:38,388 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:19:38,389 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:19:38,451 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:19:38,451 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:19:38,451 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:19:39,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:19:43,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:19:44,001 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:19:44,002 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:19:44,010 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:19:44,024 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:19:44,025 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:19:44,027 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-11-06 20:20:05,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:20:05,166 INFO  L93              Difference]: Finished difference Result 7907 states and 15105 transitions.
[2018-11-06 20:20:05,167 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:20:05,168 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1677
[2018-11-06 20:20:05,328 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:20:05,400 INFO  L225             Difference]: With dead ends: 7907
[2018-11-06 20:20:05,400 INFO  L226             Difference]: Without dead ends: 5714
[2018-11-06 20:20:05,409 INFO  L604         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
[2018-11-06 20:20:05,433 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5714 states.
[2018-11-06 20:20:05,612 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5695.
[2018-11-06 20:20:05,614 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5695 states.
[2018-11-06 20:20:05,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 9459 transitions.
[2018-11-06 20:20:05,635 INFO  L78                 Accepts]: Start accepts. Automaton has 5695 states and 9459 transitions. Word has length 1677
[2018-11-06 20:20:05,639 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:20:05,639 INFO  L480      AbstractCegarLoop]: Abstraction has 5695 states and 9459 transitions.
[2018-11-06 20:20:05,639 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:20:05,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 5695 states and 9459 transitions.
[2018-11-06 20:20:05,920 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1697
[2018-11-06 20:20:05,920 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:20:05,922 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:20:05,923 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:20:05,923 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:20:05,924 INFO  L82        PathProgramCache]: Analyzing trace with hash -200017184, now seen corresponding path program 1 times
[2018-11-06 20:20:05,924 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:20:05,924 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:20:05,925 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:05,926 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:20:05,926 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:06,221 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:20:08,147 WARN  L179               SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-11-06 20:20:08,407 WARN  L179               SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-11-06 20:20:08,835 WARN  L179               SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2018-11-06 20:20:09,148 WARN  L179               SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:20:09,434 WARN  L179               SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:20:21,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:20:21,605 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:20:21,606 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2018-11-06 20:20:21,610 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-11-06 20:20:21,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-11-06 20:20:21,610 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2018-11-06 20:20:21,611 INFO  L87              Difference]: Start difference. First operand 5695 states and 9459 transitions. Second operand 15 states.
[2018-11-06 20:20:57,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:20:57,027 INFO  L93              Difference]: Finished difference Result 18397 states and 31393 transitions.
[2018-11-06 20:20:57,029 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-11-06 20:20:57,029 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 1696
[2018-11-06 20:20:57,031 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:20:57,093 INFO  L225             Difference]: With dead ends: 18397
[2018-11-06 20:20:57,093 INFO  L226             Difference]: Without dead ends: 12704
[2018-11-06 20:20:57,104 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=347, Invalid=709, Unknown=0, NotChecked=0, Total=1056
[2018-11-06 20:20:57,116 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12704 states.
[2018-11-06 20:20:57,325 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12704 to 11747.
[2018-11-06 20:20:57,325 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11747 states.
[2018-11-06 20:20:57,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 16187 transitions.
[2018-11-06 20:20:57,349 INFO  L78                 Accepts]: Start accepts. Automaton has 11747 states and 16187 transitions. Word has length 1696
[2018-11-06 20:20:57,352 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:20:57,352 INFO  L480      AbstractCegarLoop]: Abstraction has 11747 states and 16187 transitions.
[2018-11-06 20:20:57,352 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-11-06 20:20:57,352 INFO  L276                IsEmpty]: Start isEmpty. Operand 11747 states and 16187 transitions.
[2018-11-06 20:20:57,402 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1824
[2018-11-06 20:20:57,402 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:20:57,404 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:20:57,404 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:20:57,404 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:20:57,405 INFO  L82        PathProgramCache]: Analyzing trace with hash -1691141800, now seen corresponding path program 1 times
[2018-11-06 20:20:57,405 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:20:57,406 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:20:57,407 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:57,407 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:20:57,407 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:20:57,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:20:59,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 231 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2018-11-06 20:20:59,346 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:20:59,346 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:20:59,349 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:20:59,349 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:20:59,349 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:20:59,349 INFO  L87              Difference]: Start difference. First operand 11747 states and 16187 transitions. Second operand 4 states.
[2018-11-06 20:21:13,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:13,652 INFO  L93              Difference]: Finished difference Result 43946 states and 61314 transitions.
[2018-11-06 20:21:13,659 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:21:13,659 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1823
[2018-11-06 20:21:13,659 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:13,767 INFO  L225             Difference]: With dead ends: 43946
[2018-11-06 20:21:13,767 INFO  L226             Difference]: Without dead ends: 32201
[2018-11-06 20:21:13,789 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:13,819 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32201 states.
[2018-11-06 20:21:14,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32201 to 32191.
[2018-11-06 20:21:14,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32191 states.
[2018-11-06 20:21:14,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32191 states to 32191 states and 41081 transitions.
[2018-11-06 20:21:14,434 INFO  L78                 Accepts]: Start accepts. Automaton has 32191 states and 41081 transitions. Word has length 1823
[2018-11-06 20:21:14,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:14,435 INFO  L480      AbstractCegarLoop]: Abstraction has 32191 states and 41081 transitions.
[2018-11-06 20:21:14,435 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:21:14,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 32191 states and 41081 transitions.
[2018-11-06 20:21:14,517 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1854
[2018-11-06 20:21:14,517 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:14,519 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:14,520 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:14,520 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:14,522 INFO  L82        PathProgramCache]: Analyzing trace with hash 1053147916, now seen corresponding path program 1 times
[2018-11-06 20:21:14,522 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:14,522 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:14,523 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:14,523 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:14,524 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:14,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:16,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 239 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:21:16,737 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:16,737 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:21:16,739 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:21:16,739 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:21:16,740 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:21:16,740 INFO  L87              Difference]: Start difference. First operand 32191 states and 41081 transitions. Second operand 3 states.
[2018-11-06 20:21:25,781 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:25,781 INFO  L93              Difference]: Finished difference Result 94964 states and 121445 transitions.
[2018-11-06 20:21:25,783 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:21:25,784 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1853
[2018-11-06 20:21:25,784 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:25,865 INFO  L225             Difference]: With dead ends: 94964
[2018-11-06 20:21:25,865 INFO  L226             Difference]: Without dead ends: 62775
[2018-11-06 20:21:25,902 INFO  L604         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
[2018-11-06 20:21:25,946 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62775 states.
[2018-11-06 20:21:26,806 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62773.
[2018-11-06 20:21:26,806 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62773 states.
[2018-11-06 20:21:26,882 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62773 states to 62773 states and 75549 transitions.
[2018-11-06 20:21:26,882 INFO  L78                 Accepts]: Start accepts. Automaton has 62773 states and 75549 transitions. Word has length 1853
[2018-11-06 20:21:26,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:26,883 INFO  L480      AbstractCegarLoop]: Abstraction has 62773 states and 75549 transitions.
[2018-11-06 20:21:26,883 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-06 20:21:26,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 62773 states and 75549 transitions.
[2018-11-06 20:21:26,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2048
[2018-11-06 20:21:26,980 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:26,982 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:26,982 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:26,982 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:26,983 INFO  L82        PathProgramCache]: Analyzing trace with hash 1164082451, now seen corresponding path program 1 times
[2018-11-06 20:21:26,983 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:26,983 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:26,984 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:26,984 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:26,984 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:27,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:29,460 INFO  L134       CoverageAnalysis]: Checked inductivity of 581 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2018-11-06 20:21:29,461 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:29,461 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:21:29,462 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:21:29,462 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:21:29,463 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:29,463 INFO  L87              Difference]: Start difference. First operand 62773 states and 75549 transitions. Second operand 4 states.
[2018-11-06 20:21:42,881 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:21:42,881 INFO  L93              Difference]: Finished difference Result 127248 states and 153967 transitions.
[2018-11-06 20:21:42,886 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:21:42,886 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2047
[2018-11-06 20:21:42,886 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:21:42,962 INFO  L225             Difference]: With dead ends: 127248
[2018-11-06 20:21:42,962 INFO  L226             Difference]: Without dead ends: 53815
[2018-11-06 20:21:43,011 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:21:43,056 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53815 states.
[2018-11-06 20:21:43,572 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53815 to 53805.
[2018-11-06 20:21:43,573 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 53805 states.
[2018-11-06 20:21:43,645 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 53805 states to 53805 states and 58240 transitions.
[2018-11-06 20:21:43,645 INFO  L78                 Accepts]: Start accepts. Automaton has 53805 states and 58240 transitions. Word has length 2047
[2018-11-06 20:21:43,646 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:21:43,646 INFO  L480      AbstractCegarLoop]: Abstraction has 53805 states and 58240 transitions.
[2018-11-06 20:21:43,646 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:21:43,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 53805 states and 58240 transitions.
[2018-11-06 20:21:43,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2121
[2018-11-06 20:21:43,742 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:21:43,744 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:21:43,745 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:21:43,745 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:21:43,746 INFO  L82        PathProgramCache]: Analyzing trace with hash 164317722, now seen corresponding path program 1 times
[2018-11-06 20:21:43,746 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:21:43,746 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:21:43,747 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:43,747 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:21:43,748 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:21:43,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:21:44,593 WARN  L179               SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-11-06 20:21:51,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 623 backedges. 587 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked.
[2018-11-06 20:21:51,357 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:21:51,357 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2018-11-06 20:21:51,359 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-11-06 20:21:51,359 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-11-06 20:21:51,359 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2018-11-06 20:21:51,360 INFO  L87              Difference]: Start difference. First operand 53805 states and 58240 transitions. Second operand 9 states.
[2018-11-06 20:22:07,116 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:22:07,116 INFO  L93              Difference]: Finished difference Result 110656 states and 119574 transitions.
[2018-11-06 20:22:07,116 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-11-06 20:22:07,116 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2120
[2018-11-06 20:22:07,117 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:22:07,183 INFO  L225             Difference]: With dead ends: 110656
[2018-11-06 20:22:07,183 INFO  L226             Difference]: Without dead ends: 56853
[2018-11-06 20:22:07,218 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132
[2018-11-06 20:22:07,269 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 56853 states.
[2018-11-06 20:22:07,827 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 56853 to 56221.
[2018-11-06 20:22:07,827 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 56221 states.
[2018-11-06 20:22:07,896 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 56221 states to 56221 states and 60661 transitions.
[2018-11-06 20:22:07,896 INFO  L78                 Accepts]: Start accepts. Automaton has 56221 states and 60661 transitions. Word has length 2120
[2018-11-06 20:22:07,897 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:22:07,897 INFO  L480      AbstractCegarLoop]: Abstraction has 56221 states and 60661 transitions.
[2018-11-06 20:22:07,897 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-11-06 20:22:07,897 INFO  L276                IsEmpty]: Start isEmpty. Operand 56221 states and 60661 transitions.
[2018-11-06 20:22:07,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2218
[2018-11-06 20:22:07,984 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:22:07,986 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:22:07,987 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:22:07,987 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:22:07,987 INFO  L82        PathProgramCache]: Analyzing trace with hash 738559931, now seen corresponding path program 1 times
[2018-11-06 20:22:07,988 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:22:07,988 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:22:07,990 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:07,990 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:22:07,990 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:08,137 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:22:08,702 WARN  L179               SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 16
[2018-11-06 20:22:12,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 651 proven. 105 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:22:12,332 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-11-06 20:22:12,333 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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
[2018-11-06 20:22:12,458 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:22:13,002 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:22:13,071 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-11-06 20:22:15,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 867 backedges. 756 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked.
[2018-11-06 20:22:15,812 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-11-06 20:22:15,812 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9
[2018-11-06 20:22:15,824 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-11-06 20:22:15,824 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-11-06 20:22:15,824 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2018-11-06 20:22:15,825 INFO  L87              Difference]: Start difference. First operand 56221 states and 60661 transitions. Second operand 9 states.
[2018-11-06 20:22:52,485 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:22:52,486 INFO  L93              Difference]: Finished difference Result 140882 states and 152197 transitions.
[2018-11-06 20:22:52,486 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2018-11-06 20:22:52,486 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 2217
[2018-11-06 20:22:52,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:22:52,647 INFO  L225             Difference]: With dead ends: 140882
[2018-11-06 20:22:52,647 INFO  L226             Difference]: Without dead ends: 84663
[2018-11-06 20:22:52,690 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2251 GetRequests, 2230 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=155, Invalid=351, Unknown=0, NotChecked=0, Total=506
[2018-11-06 20:22:52,766 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 84663 states.
[2018-11-06 20:22:53,910 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 84663 to 74913.
[2018-11-06 20:22:53,911 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 74913 states.
[2018-11-06 20:22:54,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 74913 states to 74913 states and 79896 transitions.
[2018-11-06 20:22:54,007 INFO  L78                 Accepts]: Start accepts. Automaton has 74913 states and 79896 transitions. Word has length 2217
[2018-11-06 20:22:54,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:22:54,008 INFO  L480      AbstractCegarLoop]: Abstraction has 74913 states and 79896 transitions.
[2018-11-06 20:22:54,008 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-11-06 20:22:54,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 74913 states and 79896 transitions.
[2018-11-06 20:22:54,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2268
[2018-11-06 20:22:54,210 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:22:54,211 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2018-11-06 20:22:54,212 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:22:54,212 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:22:54,213 INFO  L82        PathProgramCache]: Analyzing trace with hash 1085299390, now seen corresponding path program 1 times
[2018-11-06 20:22:54,213 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:22:54,213 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:22:54,215 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:54,215 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:22:54,215 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:22:54,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:22:58,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 1349 backedges. 816 proven. 0 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked.
[2018-11-06 20:22:58,170 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:22:58,170 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:22:58,172 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:22:58,172 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:22:58,172 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:22:58,173 INFO  L87              Difference]: Start difference. First operand 74913 states and 79896 transitions. Second operand 3 states.
Received shutdown request...
[2018-11-06 20:23:03,738 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:23:03,738 WARN  L549      AbstractCegarLoop]: Verification canceled
[2018-11-06 20:23:03,744 WARN  L205   ceAbstractionStarter]: Timeout
[2018-11-06 20:23:03,745 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:23:03 BoogieIcfgContainer
[2018-11-06 20:23:03,745 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-06 20:23:03,746 INFO  L168              Benchmark]: Toolchain (without parser) took 225446.08 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,747 INFO  L168              Benchmark]: CDTParser took 0.23 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.
[2018-11-06 20:23:03,748 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 3806.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,749 INFO  L168              Benchmark]: Boogie Procedure Inliner took 836.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,750 INFO  L168              Benchmark]: Boogie Preprocessor took 411.78 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,751 INFO  L168              Benchmark]: RCFGBuilder took 14721.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 314.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -230.0 MB). Peak memory consumption was 826.6 MB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,752 INFO  L168              Benchmark]: TraceAbstraction took 205665.19 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -157.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB.
[2018-11-06 20:23:03,758 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 3806.68 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 836.20 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 858.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 411.78 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: 63.3 MB). Peak memory consumption was 63.3 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14721.24 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 314.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -230.0 MB). Peak memory consumption was 826.6 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 205665.19 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: -157.4 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11072]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11072). Cancelled while BasicCegarLoop was constructing difference of abstraction (74913states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (98688 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 205.5s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 152.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 14108 SDtfs, 49198 SDslu, 7471 SDs, 0 SdLazy, 116084 SolverSat, 17961 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 120.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2310 GetRequests, 2238 SyntacticMatches, 2 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 5.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74913occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 4.7s AutomataMinimizationTime, 7 MinimizatonAttempts, 11380 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 12.1s InterpolantComputationTime, 17917 NumberOfCodeBlocks, 17917 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 17908 ConstructedInterpolants, 0 QuantifiedInterpolants, 135918756 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2404 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 4670/4775 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown