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_label29_true-unreach-call.c


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This is Ultimate 0.1.23-0fd1304
[2018-10-23 19:13:27,224 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-23 19:13:27,226 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-23 19:13:27,238 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-23 19:13:27,239 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-23 19:13:27,240 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-23 19:13:27,241 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-10-23 19:13:27,246 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-23 19:13:27,246 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-23 19:13:27,247 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-23 19:13:27,248 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-23 19:13:27,249 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-23 19:13:27,250 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-23 19:13:27,251 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-23 19:13:27,253 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-23 19:13:27,255 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-23 19:13:27,256 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-23 19:13:27,257 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-23 19:13:27,258 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-23 19:13:27,261 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-10-23 19:13:27,261 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-23 19:13:27,265 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-23 19:13:27,266 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-23 19:13:27,267 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-23 19:13:27,273 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-23 19:13:27,277 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-23 19:13:27,278 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 19:13:27,295 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-23 19:13:27,295 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-23 19:13:27,296 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-23 19:13:27,296 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-23 19:13:27,297 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-23 19:13:27,297 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-23 19:13:27,297 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-23 19:13:27,298 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-23 19:13:27,298 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-23 19:13:27,298 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-23 19:13:27,298 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-23 19:13:27,298 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-23 19:13:27,299 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-23 19:13:27,299 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-23 19:13:27,299 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-23 19:13:27,299 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-23 19:13:27,300 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-23 19:13:27,300 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-23 19:13:27,300 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-23 19:13:27,300 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 19:13:27,300 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-23 19:13:27,301 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-23 19:13:27,301 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-23 19:13:27,301 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-23 19:13:27,301 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-23 19:13:27,301 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-23 19:13:27,302 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-23 19:13:27,302 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-23 19:13:27,355 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-23 19:13:27,368 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-23 19:13:27,372 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-23 19:13:27,374 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-23 19:13:27,374 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-23 19:13:27,375 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label29_true-unreach-call.c
[2018-10-23 19:13:27,444 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99e58259d/f9beafca6516496b822c29020301aa2c/FLAGa7083e187
[2018-10-23 19:13:28,330 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-23 19:13:28,331 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label29_true-unreach-call.c
[2018-10-23 19:13:28,381 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99e58259d/f9beafca6516496b822c29020301aa2c/FLAGa7083e187
[2018-10-23 19:13:28,397 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/99e58259d/f9beafca6516496b822c29020301aa2c
[2018-10-23 19:13:28,410 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-23 19:13:28,412 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-23 19:13:28,413 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-23 19:13:28,413 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-23 19:13:28,417 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-23 19:13:28,418 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:13:28" (1/1) ...
[2018-10-23 19:13:28,421 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c5ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:28, skipping insertion in model container
[2018-10-23 19:13:28,421 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 07:13:28" (1/1) ...
[2018-10-23 19:13:28,432 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-23 19:13:28,703 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-23 19:13:31,007 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:13:31,013 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-23 19:13:32,597 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-23 19:13:32,669 INFO  L193         MainTranslator]: Completed translation
[2018-10-23 19:13:32,670 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32 WrapperNode
[2018-10-23 19:13:32,670 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-23 19:13:32,671 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-23 19:13:32,671 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-23 19:13:32,672 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-23 19:13:32,681 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:32,772 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,541 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-23 19:13:33,541 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-23 19:13:33,541 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-23 19:13:33,542 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-23 19:13:33,552 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,552 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,591 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,591 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,768 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,843 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,902 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (1/1) ...
[2018-10-23 19:13:33,952 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-23 19:13:33,953 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-23 19:13:33,953 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-23 19:13:33,953 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-23 19:13:33,954 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (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 19:13:34,026 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-23 19:13:34,026 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-23 19:13:34,027 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-23 19:13:48,832 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-23 19:13:48,832 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:13:48 BoogieIcfgContainer
[2018-10-23 19:13:48,833 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-23 19:13:48,834 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-23 19:13:48,834 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-23 19:13:48,837 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-23 19:13:48,837 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 07:13:28" (1/3) ...
[2018-10-23 19:13:48,838 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59006203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:13:48, skipping insertion in model container
[2018-10-23 19:13:48,838 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 07:13:32" (2/3) ...
[2018-10-23 19:13:48,839 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59006203 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 07:13:48, skipping insertion in model container
[2018-10-23 19:13:48,839 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 07:13:48" (3/3) ...
[2018-10-23 19:13:48,841 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label29_true-unreach-call.c
[2018-10-23 19:13:48,851 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-23 19:13:48,861 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-23 19:13:48,880 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-23 19:13:48,935 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-23 19:13:48,936 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-23 19:13:48,936 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-23 19:13:48,936 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-23 19:13:48,936 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-23 19:13:48,936 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-23 19:13:48,936 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-23 19:13:48,937 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-23 19:13:48,937 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-23 19:13:48,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-23 19:13:49,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1693
[2018-10-23 19:13:49,145 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:13:49,148 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:13:49,152 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:13:49,158 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:13:49,159 INFO  L82        PathProgramCache]: Analyzing trace with hash 838801218, now seen corresponding path program 1 times
[2018-10-23 19:13:49,162 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:13:49,162 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:13:49,214 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:49,214 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:13:49,214 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:13:49,832 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:13:55,026 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 19:13:55,029 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:13:55,029 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:13:55,040 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:13:55,054 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:13:55,055 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:13:55,057 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-23 19:14:16,382 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:14:16,383 INFO  L93              Difference]: Finished difference Result 8022 states and 15330 transitions.
[2018-10-23 19:14:16,383 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:14:16,385 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1692
[2018-10-23 19:14:16,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:14:16,457 INFO  L225             Difference]: With dead ends: 8022
[2018-10-23 19:14:16,457 INFO  L226             Difference]: Without dead ends: 5829
[2018-10-23 19:14:16,468 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:14:16,494 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5829 states.
[2018-10-23 19:14:16,706 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5829 to 5705.
[2018-10-23 19:14:16,708 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5705 states.
[2018-10-23 19:14:16,732 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5705 states to 5705 states and 9842 transitions.
[2018-10-23 19:14:16,735 INFO  L78                 Accepts]: Start accepts. Automaton has 5705 states and 9842 transitions. Word has length 1692
[2018-10-23 19:14:16,741 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:14:16,741 INFO  L481      AbstractCegarLoop]: Abstraction has 5705 states and 9842 transitions.
[2018-10-23 19:14:16,741 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:14:16,742 INFO  L276                IsEmpty]: Start isEmpty. Operand 5705 states and 9842 transitions.
[2018-10-23 19:14:17,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1701
[2018-10-23 19:14:17,031 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:14:17,033 INFO  L375         BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:14:17,033 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:14:17,034 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:14:17,036 INFO  L82        PathProgramCache]: Analyzing trace with hash -1561859046, now seen corresponding path program 1 times
[2018-10-23 19:14:17,036 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:14:17,036 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:14:17,037 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:17,037 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:17,038 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:17,358 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:21,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:14:21,075 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:14:21,076 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:14:21,079 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:14:21,080 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:14:21,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:14:21,080 INFO  L87              Difference]: Start difference. First operand 5705 states and 9842 transitions. Second operand 4 states.
[2018-10-23 19:14:36,443 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:14:36,444 INFO  L93              Difference]: Finished difference Result 21666 states and 37814 transitions.
[2018-10-23 19:14:36,444 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:14:36,445 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1700
[2018-10-23 19:14:36,449 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:14:36,525 INFO  L225             Difference]: With dead ends: 21666
[2018-10-23 19:14:36,525 INFO  L226             Difference]: Without dead ends: 15963
[2018-10-23 19:14:36,537 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 19:14:36,552 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15963 states.
[2018-10-23 19:14:36,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15963 to 15950.
[2018-10-23 19:14:36,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 15950 states.
[2018-10-23 19:14:36,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 15950 states to 15950 states and 24121 transitions.
[2018-10-23 19:14:36,858 INFO  L78                 Accepts]: Start accepts. Automaton has 15950 states and 24121 transitions. Word has length 1700
[2018-10-23 19:14:36,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:14:36,862 INFO  L481      AbstractCegarLoop]: Abstraction has 15950 states and 24121 transitions.
[2018-10-23 19:14:36,863 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:14:36,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 15950 states and 24121 transitions.
[2018-10-23 19:14:36,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1713
[2018-10-23 19:14:36,928 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:14:36,930 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:14:36,930 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:14:36,931 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:14:36,931 INFO  L82        PathProgramCache]: Analyzing trace with hash 605160865, now seen corresponding path program 1 times
[2018-10-23 19:14:36,932 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:14:36,932 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:14:36,933 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:36,933 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:36,933 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:37,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:38,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 19:14:38,306 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:14:38,306 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:14:38,308 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:14:38,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:14:38,309 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:14:38,309 INFO  L87              Difference]: Start difference. First operand 15950 states and 24121 transitions. Second operand 4 states.
[2018-10-23 19:14:53,701 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:14:53,701 INFO  L93              Difference]: Finished difference Result 62521 states and 94842 transitions.
[2018-10-23 19:14:53,702 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:14:53,703 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1712
[2018-10-23 19:14:53,703 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:14:53,806 INFO  L225             Difference]: With dead ends: 62521
[2018-10-23 19:14:53,806 INFO  L226             Difference]: Without dead ends: 46573
[2018-10-23 19:14:53,832 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 19:14:53,873 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 46573 states.
[2018-10-23 19:14:54,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 46573 to 46544.
[2018-10-23 19:14:54,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 46544 states.
[2018-10-23 19:14:54,579 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 46544 states to 46544 states and 63519 transitions.
[2018-10-23 19:14:54,579 INFO  L78                 Accepts]: Start accepts. Automaton has 46544 states and 63519 transitions. Word has length 1712
[2018-10-23 19:14:54,580 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:14:54,580 INFO  L481      AbstractCegarLoop]: Abstraction has 46544 states and 63519 transitions.
[2018-10-23 19:14:54,580 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:14:54,580 INFO  L276                IsEmpty]: Start isEmpty. Operand 46544 states and 63519 transitions.
[2018-10-23 19:14:54,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1963
[2018-10-23 19:14:54,704 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:14:54,706 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 19:14:54,706 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:14:54,706 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:14:54,707 INFO  L82        PathProgramCache]: Analyzing trace with hash 1682402040, now seen corresponding path program 1 times
[2018-10-23 19:14:54,707 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:14:54,707 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:14:54,708 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:54,708 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:54,708 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:14:54,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:56,855 INFO  L134       CoverageAnalysis]: Checked inductivity of 359 backedges. 90 proven. 5 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked.
[2018-10-23 19:14:56,856 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-23 19:14:56,856 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 19:14:56,869 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:14:57,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:14:57,424 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-23 19:14:59,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 359 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2018-10-23 19:14:59,444 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-23 19:14:59,445 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4
[2018-10-23 19:14:59,448 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-23 19:14:59,449 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-23 19:14:59,449 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2018-10-23 19:14:59,449 INFO  L87              Difference]: Start difference. First operand 46544 states and 63519 transitions. Second operand 5 states.
[2018-10-23 19:15:20,308 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:15:20,308 INFO  L93              Difference]: Finished difference Result 222193 states and 303976 transitions.
[2018-10-23 19:15:20,309 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-23 19:15:20,309 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1962
[2018-10-23 19:15:20,309 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:15:20,700 INFO  L225             Difference]: With dead ends: 222193
[2018-10-23 19:15:20,700 INFO  L226             Difference]: Without dead ends: 175651
[2018-10-23 19:15:20,798 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 1968 GetRequests, 1961 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2018-10-23 19:15:21,001 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 175651 states.
[2018-10-23 19:15:23,088 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 175651 to 175650.
[2018-10-23 19:15:23,088 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 175650 states.
[2018-10-23 19:15:23,361 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 175650 states to 175650 states and 204806 transitions.
[2018-10-23 19:15:23,361 INFO  L78                 Accepts]: Start accepts. Automaton has 175650 states and 204806 transitions. Word has length 1962
[2018-10-23 19:15:23,362 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:15:23,362 INFO  L481      AbstractCegarLoop]: Abstraction has 175650 states and 204806 transitions.
[2018-10-23 19:15:23,362 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-23 19:15:23,362 INFO  L276                IsEmpty]: Start isEmpty. Operand 175650 states and 204806 transitions.
[2018-10-23 19:15:23,569 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2095
[2018-10-23 19:15:23,570 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:15:23,572 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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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]
[2018-10-23 19:15:23,574 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:15:23,574 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:15:23,575 INFO  L82        PathProgramCache]: Analyzing trace with hash -545286102, now seen corresponding path program 1 times
[2018-10-23 19:15:23,575 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:15:23,575 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:15:23,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:15:23,576 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:15:23,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:15:23,707 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:15:26,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 510 backedges. 220 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked.
[2018-10-23 19:15:26,178 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:15:26,178 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 19:15:26,179 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 19:15:26,180 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 19:15:26,180 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 19:15:26,180 INFO  L87              Difference]: Start difference. First operand 175650 states and 204806 transitions. Second operand 3 states.
[2018-10-23 19:15:36,829 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:15:36,830 INFO  L93              Difference]: Finished difference Result 470223 states and 549123 transitions.
[2018-10-23 19:15:36,830 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-23 19:15:36,830 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2094
[2018-10-23 19:15:36,831 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:15:37,139 INFO  L225             Difference]: With dead ends: 470223
[2018-10-23 19:15:37,140 INFO  L226             Difference]: Without dead ends: 268959
[2018-10-23 19:15:37,277 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 19:15:37,462 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 268959 states.
[2018-10-23 19:15:40,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 268959 to 251965.
[2018-10-23 19:15:40,375 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 251965 states.
[2018-10-23 19:15:40,626 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 251965 states to 251965 states and 268918 transitions.
[2018-10-23 19:15:40,626 INFO  L78                 Accepts]: Start accepts. Automaton has 251965 states and 268918 transitions. Word has length 2094
[2018-10-23 19:15:40,627 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:15:40,627 INFO  L481      AbstractCegarLoop]: Abstraction has 251965 states and 268918 transitions.
[2018-10-23 19:15:40,627 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 19:15:40,627 INFO  L276                IsEmpty]: Start isEmpty. Operand 251965 states and 268918 transitions.
[2018-10-23 19:15:40,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2149
[2018-10-23 19:15:40,872 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:15:40,874 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:40,874 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:15:40,874 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:15:40,875 INFO  L82        PathProgramCache]: Analyzing trace with hash -1953117228, now seen corresponding path program 1 times
[2018-10-23 19:15:40,875 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:15:40,876 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:15:40,877 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:15:40,877 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:15:40,877 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:15:41,016 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:15:42,016 WARN  L179               SmtUtils]: Spent 474.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12
[2018-10-23 19:15:44,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 683 backedges. 375 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked.
[2018-10-23 19:15:44,527 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:15:44,528 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:15:44,529 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:15:44,529 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:15:44,529 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:15:44,530 INFO  L87              Difference]: Start difference. First operand 251965 states and 268918 transitions. Second operand 4 states.
[2018-10-23 19:15:58,730 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:15:58,730 INFO  L93              Difference]: Finished difference Result 595774 states and 635916 transitions.
[2018-10-23 19:15:58,730 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:15:58,731 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2148
[2018-10-23 19:15:58,731 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:15:59,260 INFO  L225             Difference]: With dead ends: 595774
[2018-10-23 19:15:59,261 INFO  L226             Difference]: Without dead ends: 343811
[2018-10-23 19:15:59,406 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:15:59,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 343811 states.
[2018-10-23 19:16:09,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 343811 to 342012.
[2018-10-23 19:16:09,783 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 342012 states.
[2018-10-23 19:16:10,161 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 342012 states to 342012 states and 358966 transitions.
[2018-10-23 19:16:10,162 INFO  L78                 Accepts]: Start accepts. Automaton has 342012 states and 358966 transitions. Word has length 2148
[2018-10-23 19:16:10,162 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:16:10,162 INFO  L481      AbstractCegarLoop]: Abstraction has 342012 states and 358966 transitions.
[2018-10-23 19:16:10,162 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:16:10,163 INFO  L276                IsEmpty]: Start isEmpty. Operand 342012 states and 358966 transitions.
[2018-10-23 19:16:10,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2149
[2018-10-23 19:16:10,445 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:16:10,447 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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]
[2018-10-23 19:16:10,447 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:16:10,447 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:16:10,448 INFO  L82        PathProgramCache]: Analyzing trace with hash -1048658060, now seen corresponding path program 1 times
[2018-10-23 19:16:10,448 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:16:10,448 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:16:10,450 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:16:10,450 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:16:10,450 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:16:10,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:16:14,059 INFO  L134       CoverageAnalysis]: Checked inductivity of 706 backedges. 356 proven. 0 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked.
[2018-10-23 19:16:14,060 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:16:14,060 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 19:16:14,062 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:16:14,062 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:16:14,062 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:16:14,063 INFO  L87              Difference]: Start difference. First operand 342012 states and 358966 transitions. Second operand 4 states.
[2018-10-23 19:16:27,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:16:27,394 INFO  L93              Difference]: Finished difference Result 685728 states and 719983 transitions.
[2018-10-23 19:16:27,395 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:16:27,395 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2148
[2018-10-23 19:16:27,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:16:27,826 INFO  L225             Difference]: With dead ends: 685728
[2018-10-23 19:16:27,826 INFO  L226             Difference]: Without dead ends: 343716
[2018-10-23 19:16:27,977 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 19:16:28,248 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 343716 states.
[2018-10-23 19:16:31,897 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 343716 to 338608.
[2018-10-23 19:16:31,897 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 338608 states.
[2018-10-23 19:16:32,276 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 338608 states to 338608 states and 351113 transitions.
[2018-10-23 19:16:32,276 INFO  L78                 Accepts]: Start accepts. Automaton has 338608 states and 351113 transitions. Word has length 2148
[2018-10-23 19:16:32,276 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-23 19:16:32,277 INFO  L481      AbstractCegarLoop]: Abstraction has 338608 states and 351113 transitions.
[2018-10-23 19:16:32,277 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 19:16:32,277 INFO  L276                IsEmpty]: Start isEmpty. Operand 338608 states and 351113 transitions.
[2018-10-23 19:16:32,506 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2253
[2018-10-23 19:16:32,506 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-23 19:16:32,507 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2018-10-23 19:16:32,508 INFO  L424      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 19:16:32,508 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 19:16:32,508 INFO  L82        PathProgramCache]: Analyzing trace with hash 813820361, now seen corresponding path program 1 times
[2018-10-23 19:16:32,508 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 19:16:32,509 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 19:16:32,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:16:32,509 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 19:16:32,510 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 19:16:32,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 19:16:36,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 943 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked.
[2018-10-23 19:16:36,397 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 19:16:36,397 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 19:16:36,398 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 19:16:36,398 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 19:16:36,399 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:16:36,399 INFO  L87              Difference]: Start difference. First operand 338608 states and 351113 transitions. Second operand 4 states.
[2018-10-23 19:16:49,700 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 19:16:49,701 INFO  L93              Difference]: Finished difference Result 845443 states and 876822 transitions.
[2018-10-23 19:16:49,701 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-23 19:16:49,701 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2252
[2018-10-23 19:16:49,701 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 19:16:50,318 INFO  L225             Difference]: With dead ends: 845443
[2018-10-23 19:16:50,319 INFO  L226             Difference]: Without dead ends: 506836
[2018-10-23 19:16:51,497 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 19:16:51,807 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 506836 states.
Received shutdown request...
[2018-10-23 19:17:02,329 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 506836 to 498309.
[2018-10-23 19:17:02,329 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 498309 states.
[2018-10-23 19:17:02,330 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-23 19:17:02,335 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-23 19:17:02,335 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 07:17:02 BoogieIcfgContainer
[2018-10-23 19:17:02,335 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-23 19:17:02,336 INFO  L168              Benchmark]: Toolchain (without parser) took 213925.56 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.2 GB). Peak memory consumption was 4.5 GB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,337 INFO  L168              Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,338 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 4258.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 992.1 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,339 INFO  L168              Benchmark]: Boogie Procedure Inliner took 869.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 992.1 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,340 INFO  L168              Benchmark]: Boogie Preprocessor took 411.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,341 INFO  L168              Benchmark]: RCFGBuilder took 14879.98 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -255.7 MB). Peak memory consumption was 874.8 MB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,342 INFO  L168              Benchmark]: TraceAbstraction took 193501.55 ms. Allocated memory was 2.7 GB in the beginning and 5.8 GB in the end (delta: 3.1 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 4.4 GB. Max. memory is 7.1 GB.
[2018-10-23 19:17:02,348 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 4258.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 992.1 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 869.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 841.0 MB). Free memory was 992.1 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 411.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14879.98 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 292.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -255.7 MB). Peak memory consumption was 874.8 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 193501.55 ms. Allocated memory was 2.7 GB in the beginning and 5.8 GB in the end (delta: 3.1 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 4.4 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11117]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11117). Cancelled while ReachableStatesComputation was computing reachable states (1 states constructedinput type DoubleDeckerAutomaton).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 193.4s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 128.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 11711 SDtfs, 37564 SDslu, 2757 SDs, 0 SdLazy, 68175 SolverSat, 23462 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1997 GetRequests, 1972 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=342012occurred in iteration=6, 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: 33.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 24068 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 8.6s InterpolantComputationTime, 17670 NumberOfCodeBlocks, 17670 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 17661 ConstructedInterpolants, 0 QuantifiedInterpolants, 54457167 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2172 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 3588/3593 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown