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_label17_true-unreach-call.c


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This is Ultimate 0.1.23-0fd1304
[2018-10-23 19:10:58,060 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-23 19:10:58,063 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-23 19:10:58,075 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-23 19:10:58,076 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-23 19:10:58,077 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-23 19:10:58,078 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-10-23 19:10:58,083 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-23 19:10:58,084 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-23 19:10:58,084 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-23 19:10:58,085 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-23 19:10:58,087 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-23 19:10:58,087 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-23 19:10:58,088 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-23 19:10:58,090 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-23 19:10:58,093 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-23 19:10:58,095 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-23 19:10:58,096 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-23 19:10:58,097 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-23 19:10:58,100 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-23 19:10:58,100 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-23 19:10:58,106 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-23 19:10:58,110 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-23 19:10:58,111 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-23 19:10:58,118 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-23 19:10:58,121 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-23 19:10:58,121 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-10-23 19:10:58,153 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-23 19:10:58,153 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-23 19:10:58,154 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-23 19:10:58,154 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-23 19:10:58,155 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-23 19:10:58,155 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-23 19:10:58,155 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-23 19:10:58,156 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-23 19:10:58,156 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-23 19:10:58,156 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-23 19:10:58,156 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-23 19:10:58,156 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-23 19:10:58,157 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-23 19:10:58,157 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-23 19:10:58,157 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-23 19:10:58,157 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-23 19:10:58,157 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-23 19:10:58,157 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-23 19:10:58,159 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-23 19:10:58,159 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 19:10:58,160 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-23 19:10:58,160 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-23 19:10:58,160 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-23 19:10:58,160 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-23 19:10:58,160 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-23 19:10:58,161 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-23 19:10:58,161 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-23 19:10:58,161 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-23 19:10:58,219 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-23 19:10:58,234 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-23 19:10:58,240 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-23 19:10:58,242 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-23 19:10:58,242 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-23 19:10:58,243 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label17_true-unreach-call.c
[2018-10-23 19:10:58,321 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6bbb56989/263cf70da60a4220bb1a7c786562752e/FLAG71461b522
[2018-10-23 19:10:59,267 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-23 19:10:59,268 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label17_true-unreach-call.c
[2018-10-23 19:10:59,321 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6bbb56989/263cf70da60a4220bb1a7c786562752e/FLAG71461b522
[2018-10-23 19:10:59,338 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6bbb56989/263cf70da60a4220bb1a7c786562752e
[2018-10-23 19:10:59,352 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-23 19:10:59,354 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-23 19:10:59,355 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-23 19:10:59,355 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-23 19:10:59,360 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-23 19:10:59,362 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:10:59" (1/1) ...
[2018-10-23 19:10:59,366 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@122e7e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:10:59, skipping insertion in model container
[2018-10-23 19:10:59,366 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:10:59" (1/1) ...
[2018-10-23 19:10:59,378 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-23 19:10:59,706 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-23 19:11:02,035 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:11:02,041 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-23 19:11:03,308 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:11:03,383 INFO  L193         MainTranslator]: Completed translation
[2018-10-23 19:11:03,384 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03 WrapperNode
[2018-10-23 19:11:03,384 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-23 19:11:03,385 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-23 19:11:03,385 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-23 19:11:03,385 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-23 19:11:03,397 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:03,514 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,352 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-23 19:11:04,353 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-23 19:11:04,353 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-23 19:11:04,353 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-23 19:11:04,365 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,366 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,433 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,434 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,674 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,760 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,849 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
[2018-10-23 19:11:04,942 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-23 19:11:04,943 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-23 19:11:04,943 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-23 19:11:04,943 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-23 19:11:04,944 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 19:11:05,012 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-23 19:11:05,013 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-23 19:11:05,013 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-23 19:11:20,125 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-23 19:11:20,126 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:11:20 BoogieIcfgContainer
[2018-10-23 19:11:20,126 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-23 19:11:20,127 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-23 19:11:20,127 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-23 19:11:20,135 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-23 19:11:20,136 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:10:59" (1/3) ...
[2018-10-23 19:11:20,136 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcd226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:11:20, skipping insertion in model container
[2018-10-23 19:11:20,137 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:11:03" (2/3) ...
[2018-10-23 19:11:20,137 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37fcd226 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:11:20, skipping insertion in model container
[2018-10-23 19:11:20,139 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:11:20" (3/3) ...
[2018-10-23 19:11:20,141 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label17_true-unreach-call.c
[2018-10-23 19:11:20,150 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-23 19:11:20,163 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-23 19:11:20,183 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-23 19:11:20,232 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-23 19:11:20,232 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-23 19:11:20,233 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-23 19:11:20,233 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-23 19:11:20,233 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-23 19:11:20,233 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-23 19:11:20,233 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-23 19:11:20,233 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-23 19:11:20,234 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-23 19:11:20,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-23 19:11:20,421 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1673
[2018-10-23 19:11:20,421 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:11:20,424 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]
[2018-10-23 19:11:20,427 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:11:20,433 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:11:20,435 INFO  L82        PathProgramCache]: Analyzing trace with hash 1910786802, now seen corresponding path program 1 times
[2018-10-23 19:11:20,437 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:11:20,438 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:11:20,495 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:11:20,495 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:11:20,495 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:11:21,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:11:23,209 WARN  L179               SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-10-23 19:11:26,274 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:11:26,276 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:11:26,276 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:11:26,285 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:11:26,299 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:11:26,300 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:11:26,302 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-23 19:11:48,206 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:11:48,207 INFO  L93              Difference]: Finished difference Result 7913 states and 15111 transitions.
[2018-10-23 19:11:48,208 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:11:48,210 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1672
[2018-10-23 19:11:48,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:11:48,287 INFO  L225             Difference]: With dead ends: 7913
[2018-10-23 19:11:48,289 INFO  L226             Difference]: Without dead ends: 5720
[2018-10-23 19:11:48,301 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:11:48,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5720 states.
[2018-10-23 19:11:48,511 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5720 to 5702.
[2018-10-23 19:11:48,513 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5702 states.
[2018-10-23 19:11:48,535 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5702 states to 5702 states and 9419 transitions.
[2018-10-23 19:11:48,538 INFO  L78                 Accepts]: Start accepts. Automaton has 5702 states and 9419 transitions. Word has length 1672
[2018-10-23 19:11:48,543 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:11:48,543 INFO  L481      AbstractCegarLoop]: Abstraction has 5702 states and 9419 transitions.
[2018-10-23 19:11:48,544 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:11:48,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 5702 states and 9419 transitions.
[2018-10-23 19:11:49,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1691
[2018-10-23 19:11:49,009 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:11:49,010 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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, 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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]
[2018-10-23 19:11:49,011 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:11:49,012 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:11:49,012 INFO  L82        PathProgramCache]: Analyzing trace with hash -1730756128, now seen corresponding path program 1 times
[2018-10-23 19:11:49,013 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:11:49,013 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:11:49,014 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:11:49,014 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:11:49,014 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:11:49,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:11:50,541 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2018-10-23 19:11:50,542 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:11:50,542 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 19:11:50,547 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:11:50,547 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:11:50,547 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:11:50,548 INFO  L87              Difference]: Start difference. First operand 5702 states and 9419 transitions. Second operand 3 states.
[2018-10-23 19:12:02,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:12:02,205 INFO  L93              Difference]: Finished difference Result 16633 states and 27667 transitions.
[2018-10-23 19:12:02,205 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:12:02,205 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1690
[2018-10-23 19:12:02,206 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:12:02,258 INFO  L225             Difference]: With dead ends: 16633
[2018-10-23 19:12:02,258 INFO  L226             Difference]: Without dead ends: 10933
[2018-10-23 19:12:02,267 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:12:02,277 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10933 states.
[2018-10-23 19:12:02,426 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10933 to 10846.
[2018-10-23 19:12:02,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10846 states.
[2018-10-23 19:12:02,447 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10846 states to 10846 states and 16663 transitions.
[2018-10-23 19:12:02,448 INFO  L78                 Accepts]: Start accepts. Automaton has 10846 states and 16663 transitions. Word has length 1690
[2018-10-23 19:12:02,448 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:12:02,448 INFO  L481      AbstractCegarLoop]: Abstraction has 10846 states and 16663 transitions.
[2018-10-23 19:12:02,449 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:12:02,449 INFO  L276                IsEmpty]: Start isEmpty. Operand 10846 states and 16663 transitions.
[2018-10-23 19:12:02,496 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1703
[2018-10-23 19:12:02,496 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:12:02,498 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:12:02,498 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:12:02,499 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:12:02,500 INFO  L82        PathProgramCache]: Analyzing trace with hash -840294583, now seen corresponding path program 1 times
[2018-10-23 19:12:02,500 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:12:02,500 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:12:02,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:02,501 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:12:02,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:02,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:12:03,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2018-10-23 19:12:03,953 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:12:03,953 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:12:03,954 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-23 19:12:03,955 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-23 19:12:03,955 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2018-10-23 19:12:03,955 INFO  L87              Difference]: Start difference. First operand 10846 states and 16663 transitions. Second operand 5 states.
[2018-10-23 19:12:20,444 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:12:20,445 INFO  L93              Difference]: Finished difference Result 42088 states and 64956 transitions.
[2018-10-23 19:12:20,445 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:12:20,446 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1702
[2018-10-23 19:12:20,446 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:12:20,540 INFO  L225             Difference]: With dead ends: 42088
[2018-10-23 19:12:20,541 INFO  L226             Difference]: Without dead ends: 31244
[2018-10-23 19:12:20,563 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2018-10-23 19:12:20,594 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31244 states.
[2018-10-23 19:12:21,005 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31244 to 31242.
[2018-10-23 19:12:21,006 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 31242 states.
[2018-10-23 19:12:21,062 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 31242 states to 31242 states and 43692 transitions.
[2018-10-23 19:12:21,063 INFO  L78                 Accepts]: Start accepts. Automaton has 31242 states and 43692 transitions. Word has length 1702
[2018-10-23 19:12:21,064 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:12:21,064 INFO  L481      AbstractCegarLoop]: Abstraction has 31242 states and 43692 transitions.
[2018-10-23 19:12:21,064 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-23 19:12:21,064 INFO  L276                IsEmpty]: Start isEmpty. Operand 31242 states and 43692 transitions.
[2018-10-23 19:12:21,160 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1711
[2018-10-23 19:12:21,161 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:12:21,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:12:21,163 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:12:21,163 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:12:21,164 INFO  L82        PathProgramCache]: Analyzing trace with hash 2075772337, now seen corresponding path program 1 times
[2018-10-23 19:12:21,164 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:12:21,164 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:12:21,165 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:21,165 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:12:21,165 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:21,276 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:12:22,804 INFO  L134       CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:12:22,805 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:12:22,805 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 19:12:22,807 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:12:22,807 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:12:22,808 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:12:22,808 INFO  L87              Difference]: Start difference. First operand 31242 states and 43692 transitions. Second operand 3 states.
[2018-10-23 19:12:30,638 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:12:30,639 INFO  L93              Difference]: Finished difference Result 72672 states and 100207 transitions.
[2018-10-23 19:12:30,639 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:12:30,639 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1710
[2018-10-23 19:12:30,640 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:12:30,715 INFO  L225             Difference]: With dead ends: 72672
[2018-10-23 19:12:30,715 INFO  L226             Difference]: Without dead ends: 41432
[2018-10-23 19:12:30,755 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:12:30,790 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41432 states.
[2018-10-23 19:12:31,226 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41432 to 41432.
[2018-10-23 19:12:31,226 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41432 states.
[2018-10-23 19:12:31,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41432 states to 41432 states and 51846 transitions.
[2018-10-23 19:12:31,279 INFO  L78                 Accepts]: Start accepts. Automaton has 41432 states and 51846 transitions. Word has length 1710
[2018-10-23 19:12:31,280 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:12:31,280 INFO  L481      AbstractCegarLoop]: Abstraction has 41432 states and 51846 transitions.
[2018-10-23 19:12:31,280 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:12:31,280 INFO  L276                IsEmpty]: Start isEmpty. Operand 41432 states and 51846 transitions.
[2018-10-23 19:12:31,361 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1852
[2018-10-23 19:12:31,361 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:12:31,363 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:12:31,363 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:12:31,363 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:12:31,364 INFO  L82        PathProgramCache]: Analyzing trace with hash 715714649, now seen corresponding path program 1 times
[2018-10-23 19:12:31,364 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:12:31,364 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:12:31,365 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:31,365 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:12:31,366 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:31,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:12:34,097 INFO  L134       CoverageAnalysis]: Checked inductivity of 267 backedges. 214 proven. 5 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked.
[2018-10-23 19:12:34,097 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-23 19:12:34,098 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-23 19:12:34,108 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:12:34,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:12:34,648 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-23 19:12:36,296 INFO  L134       CoverageAnalysis]: Checked inductivity of 267 backedges. 214 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked.
[2018-10-23 19:12:36,318 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-23 19:12:36,319 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 4
[2018-10-23 19:12:36,324 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:12:36,324 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:12:36,325 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:12:36,325 INFO  L87              Difference]: Start difference. First operand 41432 states and 51846 transitions. Second operand 4 states.
[2018-10-23 19:12:51,375 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:12:51,375 INFO  L93              Difference]: Finished difference Result 161152 states and 200526 transitions.
[2018-10-23 19:12:51,376 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:12:51,376 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1851
[2018-10-23 19:12:51,377 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:12:51,682 INFO  L225             Difference]: With dead ends: 161152
[2018-10-23 19:12:51,683 INFO  L226             Difference]: Without dead ends: 119722
[2018-10-23 19:12:51,743 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 1855 GetRequests, 1852 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:12:51,861 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 119722 states.
[2018-10-23 19:12:53,008 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 119722 to 82206.
[2018-10-23 19:12:53,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 82206 states.
[2018-10-23 19:12:53,133 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 82206 states to 82206 states and 98719 transitions.
[2018-10-23 19:12:53,134 INFO  L78                 Accepts]: Start accepts. Automaton has 82206 states and 98719 transitions. Word has length 1851
[2018-10-23 19:12:53,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:12:53,135 INFO  L481      AbstractCegarLoop]: Abstraction has 82206 states and 98719 transitions.
[2018-10-23 19:12:53,135 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:12:53,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 82206 states and 98719 transitions.
[2018-10-23 19:12:53,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1856
[2018-10-23 19:12:53,351 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:12:53,352 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:12:53,353 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:12:53,353 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:12:53,354 INFO  L82        PathProgramCache]: Analyzing trace with hash 42481891, now seen corresponding path program 1 times
[2018-10-23 19:12:53,354 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:12:53,354 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:12:53,355 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:53,355 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:12:53,355 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:12:53,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:12:56,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 271 backedges. 253 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2018-10-23 19:12:56,634 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:12:56,634 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:12:56,636 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:12:56,636 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:12:56,637 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:12:56,637 INFO  L87              Difference]: Start difference. First operand 82206 states and 98719 transitions. Second operand 4 states.
[2018-10-23 19:13:11,735 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:13:11,735 INFO  L93              Difference]: Finished difference Result 310528 states and 372193 transitions.
[2018-10-23 19:13:11,737 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:13:11,737 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1855
[2018-10-23 19:13:11,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:13:12,090 INFO  L225             Difference]: With dead ends: 310528
[2018-10-23 19:13:12,090 INFO  L226             Difference]: Without dead ends: 228324
[2018-10-23 19:13:12,166 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:13:12,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 228324 states.
[2018-10-23 19:13:14,333 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 228324 to 228314.
[2018-10-23 19:13:14,333 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 228314 states.
[2018-10-23 19:13:14,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 228314 states to 228314 states and 259640 transitions.
[2018-10-23 19:13:14,658 INFO  L78                 Accepts]: Start accepts. Automaton has 228314 states and 259640 transitions. Word has length 1855
[2018-10-23 19:13:14,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:13:14,659 INFO  L481      AbstractCegarLoop]: Abstraction has 228314 states and 259640 transitions.
[2018-10-23 19:13:14,659 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:13:14,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 228314 states and 259640 transitions.
[2018-10-23 19:13:14,895 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2109
[2018-10-23 19:13:14,896 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:13:14,897 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-10-23 19:13:14,898 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:13:14,898 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:13:14,899 INFO  L82        PathProgramCache]: Analyzing trace with hash -581470448, now seen corresponding path program 1 times
[2018-10-23 19:13:14,899 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:13:14,899 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:13:14,900 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:14,900 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:13:14,900 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:15,034 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:13:18,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 723 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked.
[2018-10-23 19:13:18,480 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:13:18,481 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:13:18,482 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:13:18,483 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:13:18,483 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:13:18,483 INFO  L87              Difference]: Start difference. First operand 228314 states and 259640 transitions. Second operand 4 states.
[2018-10-23 19:13:33,175 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:13:33,175 INFO  L93              Difference]: Finished difference Result 551827 states and 624038 transitions.
[2018-10-23 19:13:33,184 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:13:33,184 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2108
[2018-10-23 19:13:33,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:13:33,631 INFO  L225             Difference]: With dead ends: 551827
[2018-10-23 19:13:33,632 INFO  L226             Difference]: Without dead ends: 323515
[2018-10-23 19:13:33,773 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:13:34,022 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 323515 states.
[2018-10-23 19:13:37,088 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 323515 to 323463.
[2018-10-23 19:13:37,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 323463 states.
[2018-10-23 19:13:37,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 323463 states to 323463 states and 358506 transitions.
[2018-10-23 19:13:37,484 INFO  L78                 Accepts]: Start accepts. Automaton has 323463 states and 358506 transitions. Word has length 2108
[2018-10-23 19:13:37,484 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:13:37,484 INFO  L481      AbstractCegarLoop]: Abstraction has 323463 states and 358506 transitions.
[2018-10-23 19:13:37,484 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:13:37,485 INFO  L276                IsEmpty]: Start isEmpty. Operand 323463 states and 358506 transitions.
[2018-10-23 19:13:37,758 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2275
[2018-10-23 19:13:37,758 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:13:37,760 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:13:37,760 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:13:37,760 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:13:37,761 INFO  L82        PathProgramCache]: Analyzing trace with hash 1901929010, now seen corresponding path program 1 times
[2018-10-23 19:13:37,761 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:13:37,761 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:13:37,763 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:37,763 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:13:37,763 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:37,899 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:13:47,222 INFO  L134       CoverageAnalysis]: Checked inductivity of 820 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 448 trivial. 0 not checked.
[2018-10-23 19:13:47,222 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:13:47,223 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:13:47,224 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:13:47,224 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:13:47,224 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:13:47,225 INFO  L87              Difference]: Start difference. First operand 323463 states and 358506 transitions. Second operand 4 states.
[2018-10-23 19:14:02,629 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:14:02,629 INFO  L93              Difference]: Finished difference Result 646929 states and 717374 transitions.
[2018-10-23 19:14:02,629 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:14:02,630 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2274
[2018-10-23 19:14:02,630 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:14:03,058 INFO  L225             Difference]: With dead ends: 646929
[2018-10-23 19:14:03,058 INFO  L226             Difference]: Without dead ends: 325167
[2018-10-23 19:14:03,241 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:14:03,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 325167 states.
[2018-10-23 19:14:06,440 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 325167 to 321757.
[2018-10-23 19:14:06,440 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 321757 states.
[2018-10-23 19:14:06,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 321757 states to 321757 states and 345296 transitions.
[2018-10-23 19:14:06,767 INFO  L78                 Accepts]: Start accepts. Automaton has 321757 states and 345296 transitions. Word has length 2274
[2018-10-23 19:14:06,767 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:14:06,768 INFO  L481      AbstractCegarLoop]: Abstraction has 321757 states and 345296 transitions.
[2018-10-23 19:14:06,768 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:14:06,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 321757 states and 345296 transitions.
[2018-10-23 19:14:06,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2319
[2018-10-23 19:14:06,983 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:14:06,985 INFO  L375         BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:14:06,985 INFO  L424      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:14:06,986 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:14:06,986 INFO  L82        PathProgramCache]: Analyzing trace with hash -16825435, now seen corresponding path program 1 times
[2018-10-23 19:14:06,986 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:14:06,986 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:14:06,987 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:06,987 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:06,987 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:07,152 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:11,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 746 backedges. 666 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked.
[2018-10-23 19:14:11,777 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:14:11,777 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:14:11,779 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:14:11,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:14:11,779 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:14:11,779 INFO  L87              Difference]: Start difference. First operand 321757 states and 345296 transitions. Second operand 3 states.
[2018-10-23 19:14:21,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:14:21,488 INFO  L93              Difference]: Finished difference Result 640107 states and 687148 transitions.
[2018-10-23 19:14:21,488 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:14:21,488 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2318
[2018-10-23 19:14:21,489 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:14:22,594 INFO  L225             Difference]: With dead ends: 640107
[2018-10-23 19:14:22,594 INFO  L226             Difference]: Without dead ends: 309829
[2018-10-23 19:14:22,703 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:14:22,859 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 309829 states.
[2018-10-23 19:14:26,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 309829 to 301331.
[2018-10-23 19:14:26,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 301331 states.
[2018-10-23 19:14:26,442 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 301331 states to 301331 states and 316191 transitions.
[2018-10-23 19:14:26,442 INFO  L78                 Accepts]: Start accepts. Automaton has 301331 states and 316191 transitions. Word has length 2318
[2018-10-23 19:14:26,443 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:14:26,443 INFO  L481      AbstractCegarLoop]: Abstraction has 301331 states and 316191 transitions.
[2018-10-23 19:14:26,443 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:14:26,443 INFO  L276                IsEmpty]: Start isEmpty. Operand 301331 states and 316191 transitions.
[2018-10-23 19:14:26,638 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2341
[2018-10-23 19:14:26,639 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:14:26,640 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:14:26,640 INFO  L424      AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:14:26,640 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:14:26,641 INFO  L82        PathProgramCache]: Analyzing trace with hash -1226682416, now seen corresponding path program 1 times
[2018-10-23 19:14:26,641 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:14:26,641 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:14:26,642 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:26,642 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:26,643 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:26,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:27,362 WARN  L179               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11
Received shutdown request...
[2018-10-23 19:14:34,290 INFO  L134       CoverageAnalysis]: Checked inductivity of 1025 backedges. 541 proven. 0 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked.
[2018-10-23 19:14:34,291 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:14:34,291 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:14:34,292 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:14:34,292 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:14:34,293 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:14:34,293 INFO  L87              Difference]: Start difference. First operand 301331 states and 316191 transitions. Second operand 4 states.
[2018-10-23 19:14:34,294 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2018-10-23 19:14:34,294 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-23 19:14:34,299 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-23 19:14:34,299 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:14:34 BoogieIcfgContainer
[2018-10-23 19:14:34,300 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-23 19:14:34,301 INFO  L168              Benchmark]: Toolchain (without parser) took 214947.85 ms. Allocated memory was 1.5 GB in the beginning and 5.3 GB in the end (delta: 3.8 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,302 INFO  L168              Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,302 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 4029.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 960.7 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,303 INFO  L168              Benchmark]: Boogie Procedure Inliner took 967.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.0 MB). Free memory was 960.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,304 INFO  L168              Benchmark]: Boogie Preprocessor took 589.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,305 INFO  L168              Benchmark]: RCFGBuilder took 15183.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 276.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -290.3 MB). Peak memory consumption was 889.9 MB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,306 INFO  L168              Benchmark]: TraceAbstraction took 194172.38 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB.
[2018-10-23 19:14:34,312 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.27 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 4029.08 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 960.7 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 967.78 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 820.0 MB). Free memory was 960.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 589.42 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 15183.69 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 276.8 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -290.3 MB). Peak memory consumption was 889.9 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 194172.38 ms. Allocated memory was 2.6 GB in the beginning and 5.3 GB in the end (delta: 2.7 GB). Free memory was 2.4 GB in the beginning and 3.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11057]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11057). Cancelled while BasicCegarLoop was constructing difference of abstraction (301331states) 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, 194.0s OverallTime, 10 OverallIterations, 5 TraceHistogramMax, 131.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 17888 SDtfs, 37886 SDslu, 2966 SDs, 0 SdLazy, 70491 SolverSat, 23548 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 97.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1887 GetRequests, 1866 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=323463occurred 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: 16.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 49593 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.0s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 21371 NumberOfCodeBlocks, 21371 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 21360 ConstructedInterpolants, 0 QuantifiedInterpolants, 52042204 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2030 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 4217/4222 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown