java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05_true-unreach-call.c


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This is Ultimate 0.1.23-df4b876
[2018-11-06 20:11:09,390 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-11-06 20:11:09,398 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-11-06 20:11:09,414 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-11-06 20:11:09,415 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-11-06 20:11:09,416 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-11-06 20:11:09,417 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-11-06 20:11:09,424 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-11-06 20:11:09,425 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-11-06 20:11:09,427 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-11-06 20:11:09,427 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-11-06 20:11:09,428 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-11-06 20:11:09,430 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-11-06 20:11:09,432 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
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[2018-11-06 20:11:09,435 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-11-06 20:11:09,436 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-11-06 20:11:09,439 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-11-06 20:11:09,439 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-11-06 20:11:09,440 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-11-06 20:11:09,441 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
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[2018-11-06 20:11:09,449 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-11-06 20:11:09,454 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-11-06 20:11:09,454 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-11-06 20:11:09,481 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-11-06 20:11:09,481 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-11-06 20:11:09,482 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-11-06 20:11:09,483 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-11-06 20:11:09,483 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-11-06 20:11:09,484 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-11-06 20:11:09,484 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-11-06 20:11:09,484 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-11-06 20:11:09,484 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-11-06 20:11:09,486 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-11-06 20:11:09,486 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-11-06 20:11:09,486 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-11-06 20:11:09,486 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-11-06 20:11:09,486 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-11-06 20:11:09,487 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-11-06 20:11:09,487 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-11-06 20:11:09,487 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-11-06 20:11:09,487 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-11-06 20:11:09,487 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-11-06 20:11:09,489 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-06 20:11:09,489 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-11-06 20:11:09,489 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-11-06 20:11:09,489 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-11-06 20:11:09,489 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-11-06 20:11:09,490 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-11-06 20:11:09,490 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-11-06 20:11:09,490 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-11-06 20:11:09,491 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-11-06 20:11:09,561 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-11-06 20:11:09,579 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-11-06 20:11:09,584 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-11-06 20:11:09,586 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-11-06 20:11:09,586 INFO  L276        PluginConnector]: CDTParser initialized
[2018-11-06 20:11:09,587 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label05_true-unreach-call.c
[2018-11-06 20:11:09,658 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91e51a71/82612847c30f4b3eb8ad12175cd677be/FLAGb7f1f9f71
[2018-11-06 20:11:10,612 INFO  L298              CDTParser]: Found 1 translation units.
[2018-11-06 20:11:10,613 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label05_true-unreach-call.c
[2018-11-06 20:11:10,657 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91e51a71/82612847c30f4b3eb8ad12175cd677be/FLAGb7f1f9f71
[2018-11-06 20:11:10,672 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c91e51a71/82612847c30f4b3eb8ad12175cd677be
[2018-11-06 20:11:10,684 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-11-06 20:11:10,686 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-11-06 20:11:10,687 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-11-06 20:11:10,687 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-11-06 20:11:10,691 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-11-06 20:11:10,692 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:11:10" (1/1) ...
[2018-11-06 20:11:10,696 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@710be24e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:10, skipping insertion in model container
[2018-11-06 20:11:10,696 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 08:11:10" (1/1) ...
[2018-11-06 20:11:10,707 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-11-06 20:11:10,984 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-11-06 20:11:13,471 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:11:13,476 INFO  L189         MainTranslator]: Completed pre-run
[2018-11-06 20:11:14,723 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-11-06 20:11:14,806 INFO  L193         MainTranslator]: Completed translation
[2018-11-06 20:11:14,806 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14 WrapperNode
[2018-11-06 20:11:14,807 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-11-06 20:11:14,809 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-11-06 20:11:14,810 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-11-06 20:11:14,810 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-11-06 20:11:14,819 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,296 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,576 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-11-06 20:11:15,576 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-11-06 20:11:15,577 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-11-06 20:11:15,577 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-11-06 20:11:15,589 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,590 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,659 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,660 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,792 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,879 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,933 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
[2018-11-06 20:11:15,989 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-11-06 20:11:15,989 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-11-06 20:11:15,989 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-11-06 20:11:15,989 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-11-06 20:11:15,990 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-11-06 20:11:16,061 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-11-06 20:11:16,062 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-11-06 20:11:16,062 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-11-06 20:11:30,479 INFO  L276             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-11-06 20:11:30,480 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:11:30 BoogieIcfgContainer
[2018-11-06 20:11:30,480 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-11-06 20:11:30,481 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-11-06 20:11:30,482 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-11-06 20:11:30,485 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-11-06 20:11:30,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 08:11:10" (1/3) ...
[2018-11-06 20:11:30,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a6b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:11:30, skipping insertion in model container
[2018-11-06 20:11:30,487 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 08:11:14" (2/3) ...
[2018-11-06 20:11:30,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a0a6b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 08:11:30, skipping insertion in model container
[2018-11-06 20:11:30,488 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 08:11:30" (3/3) ...
[2018-11-06 20:11:30,490 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem05_label05_true-unreach-call.c
[2018-11-06 20:11:30,500 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-11-06 20:11:30,512 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-11-06 20:11:30,530 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-11-06 20:11:30,584 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-11-06 20:11:30,585 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-11-06 20:11:30,585 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-11-06 20:11:30,586 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-11-06 20:11:30,586 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-11-06 20:11:30,586 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-11-06 20:11:30,586 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-11-06 20:11:30,586 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-11-06 20:11:30,586 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-11-06 20:11:30,640 INFO  L276                IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-11-06 20:11:30,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1689
[2018-11-06 20:11:30,788 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:11:30,791 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]
[2018-11-06 20:11:30,794 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:11:30,803 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:11:30,804 INFO  L82        PathProgramCache]: Analyzing trace with hash 70564658, now seen corresponding path program 1 times
[2018-11-06 20:11:30,806 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:11:30,807 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:11:30,868 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:11:30,868 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:11:30,868 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:11:31,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:11:35,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:11:35,911 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:11:35,911 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:11:35,920 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:11:35,933 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:11:35,934 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:11:35,937 INFO  L87              Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-11-06 20:11:58,146 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:11:58,147 INFO  L93              Difference]: Finished difference Result 7907 states and 15105 transitions.
[2018-11-06 20:11:58,147 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:11:58,149 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1688
[2018-11-06 20:11:58,165 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:11:58,242 INFO  L225             Difference]: With dead ends: 7907
[2018-11-06 20:11:58,242 INFO  L226             Difference]: Without dead ends: 5714
[2018-11-06 20:11:58,259 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:11:58,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5714 states.
[2018-11-06 20:11:58,504 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5714 to 5695.
[2018-11-06 20:11:58,506 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5695 states.
[2018-11-06 20:11:58,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5695 states to 5695 states and 9459 transitions.
[2018-11-06 20:11:58,530 INFO  L78                 Accepts]: Start accepts. Automaton has 5695 states and 9459 transitions. Word has length 1688
[2018-11-06 20:11:58,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:11:58,535 INFO  L480      AbstractCegarLoop]: Abstraction has 5695 states and 9459 transitions.
[2018-11-06 20:11:58,535 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:11:58,536 INFO  L276                IsEmpty]: Start isEmpty. Operand 5695 states and 9459 transitions.
[2018-11-06 20:11:58,618 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1708
[2018-11-06 20:11:58,618 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:11:58,620 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:11:58,621 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:11:58,621 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:11:58,622 INFO  L82        PathProgramCache]: Analyzing trace with hash 293515140, now seen corresponding path program 1 times
[2018-11-06 20:11:58,622 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:11:58,622 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:11:58,623 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:11:58,624 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:11:58,624 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:11:59,067 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:12:00,917 WARN  L179               SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 11
[2018-11-06 20:12:01,185 WARN  L179               SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 23
[2018-11-06 20:12:01,479 WARN  L179               SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2018-11-06 20:12:01,738 WARN  L179               SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:12:02,023 WARN  L179               SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35
[2018-11-06 20:12:15,386 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:12:15,387 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:12:15,387 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14
[2018-11-06 20:12:15,391 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-11-06 20:12:15,391 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-11-06 20:12:15,392 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210
[2018-11-06 20:12:15,392 INFO  L87              Difference]: Start difference. First operand 5695 states and 9459 transitions. Second operand 15 states.
[2018-11-06 20:12:51,465 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:12:51,466 INFO  L93              Difference]: Finished difference Result 18397 states and 31393 transitions.
[2018-11-06 20:12:51,467 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-11-06 20:12:51,468 INFO  L78                 Accepts]: Start accepts. Automaton has 15 states. Word has length 1707
[2018-11-06 20:12:51,469 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:12:51,533 INFO  L225             Difference]: With dead ends: 18397
[2018-11-06 20:12:51,534 INFO  L226             Difference]: Without dead ends: 12704
[2018-11-06 20:12:51,544 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=347, Invalid=709, Unknown=0, NotChecked=0, Total=1056
[2018-11-06 20:12:51,556 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12704 states.
[2018-11-06 20:12:51,764 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12704 to 11747.
[2018-11-06 20:12:51,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11747 states.
[2018-11-06 20:12:51,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11747 states to 11747 states and 16187 transitions.
[2018-11-06 20:12:51,788 INFO  L78                 Accepts]: Start accepts. Automaton has 11747 states and 16187 transitions. Word has length 1707
[2018-11-06 20:12:51,790 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:12:51,790 INFO  L480      AbstractCegarLoop]: Abstraction has 11747 states and 16187 transitions.
[2018-11-06 20:12:51,790 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-11-06 20:12:51,790 INFO  L276                IsEmpty]: Start isEmpty. Operand 11747 states and 16187 transitions.
[2018-11-06 20:12:51,841 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1835
[2018-11-06 20:12:51,842 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:12:51,843 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:12:51,844 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:12:51,844 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:12:51,845 INFO  L82        PathProgramCache]: Analyzing trace with hash -1303235060, now seen corresponding path program 1 times
[2018-11-06 20:12:51,845 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:12:51,845 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:12:51,846 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:12:51,846 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:12:51,847 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:12:51,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:12:53,686 INFO  L134       CoverageAnalysis]: Checked inductivity of 231 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked.
[2018-11-06 20:12:53,686 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:12:53,687 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-11-06 20:12:53,689 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:12:53,689 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:12:53,690 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:12:53,690 INFO  L87              Difference]: Start difference. First operand 11747 states and 16187 transitions. Second operand 4 states.
[2018-11-06 20:13:08,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:13:08,342 INFO  L93              Difference]: Finished difference Result 43946 states and 61314 transitions.
[2018-11-06 20:13:08,350 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:13:08,350 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1834
[2018-11-06 20:13:08,350 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:13:08,440 INFO  L225             Difference]: With dead ends: 43946
[2018-11-06 20:13:08,440 INFO  L226             Difference]: Without dead ends: 32201
[2018-11-06 20:13:08,466 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:13:08,496 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32201 states.
[2018-11-06 20:13:09,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32201 to 32191.
[2018-11-06 20:13:09,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32191 states.
[2018-11-06 20:13:09,164 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32191 states to 32191 states and 41081 transitions.
[2018-11-06 20:13:09,164 INFO  L78                 Accepts]: Start accepts. Automaton has 32191 states and 41081 transitions. Word has length 1834
[2018-11-06 20:13:09,165 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:13:09,165 INFO  L480      AbstractCegarLoop]: Abstraction has 32191 states and 41081 transitions.
[2018-11-06 20:13:09,165 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:13:09,165 INFO  L276                IsEmpty]: Start isEmpty. Operand 32191 states and 41081 transitions.
[2018-11-06 20:13:09,266 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1884
[2018-11-06 20:13:09,267 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:13:09,268 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:13:09,269 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:13:09,269 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:13:09,271 INFO  L82        PathProgramCache]: Analyzing trace with hash 411703853, now seen corresponding path program 1 times
[2018-11-06 20:13:09,271 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:13:09,271 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:13:09,272 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:09,272 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:13:09,273 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:09,401 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:13:12,190 INFO  L134       CoverageAnalysis]: Checked inductivity of 297 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked.
[2018-11-06 20:13:12,190 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:13:12,191 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:13:12,193 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:13:12,194 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:13:12,194 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:13:12,194 INFO  L87              Difference]: Start difference. First operand 32191 states and 41081 transitions. Second operand 3 states.
[2018-11-06 20:13:23,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:13:23,223 INFO  L93              Difference]: Finished difference Result 94964 states and 121445 transitions.
[2018-11-06 20:13:23,223 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:13:23,223 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 1883
[2018-11-06 20:13:23,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:13:23,337 INFO  L225             Difference]: With dead ends: 94964
[2018-11-06 20:13:23,337 INFO  L226             Difference]: Without dead ends: 62775
[2018-11-06 20:13:23,389 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:13:23,441 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 62775 states.
[2018-11-06 20:13:24,125 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 62775 to 62773.
[2018-11-06 20:13:24,126 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 62773 states.
[2018-11-06 20:13:24,218 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 62773 states to 62773 states and 75549 transitions.
[2018-11-06 20:13:24,218 INFO  L78                 Accepts]: Start accepts. Automaton has 62773 states and 75549 transitions. Word has length 1883
[2018-11-06 20:13:24,219 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:13:24,219 INFO  L480      AbstractCegarLoop]: Abstraction has 62773 states and 75549 transitions.
[2018-11-06 20:13:24,219 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-06 20:13:24,219 INFO  L276                IsEmpty]: Start isEmpty. Operand 62773 states and 75549 transitions.
[2018-11-06 20:13:24,339 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2059
[2018-11-06 20:13:24,340 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:13:24,342 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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]
[2018-11-06 20:13:24,342 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:13:24,342 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:13:24,343 INFO  L82        PathProgramCache]: Analyzing trace with hash 1104076657, now seen corresponding path program 1 times
[2018-11-06 20:13:24,343 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:13:24,343 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:13:24,345 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:24,345 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:13:24,345 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:24,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:13:26,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 581 backedges. 311 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2018-11-06 20:13:26,664 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:13:26,664 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:13:26,666 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:13:26,666 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:13:26,666 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:13:26,667 INFO  L87              Difference]: Start difference. First operand 62773 states and 75549 transitions. Second operand 4 states.
[2018-11-06 20:13:40,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:13:40,256 INFO  L93              Difference]: Finished difference Result 127248 states and 153967 transitions.
[2018-11-06 20:13:40,256 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:13:40,256 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2058
[2018-11-06 20:13:40,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:13:40,332 INFO  L225             Difference]: With dead ends: 127248
[2018-11-06 20:13:40,332 INFO  L226             Difference]: Without dead ends: 57223
[2018-11-06 20:13:40,382 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:13:40,428 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57223 states.
[2018-11-06 20:13:40,937 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57223 to 57213.
[2018-11-06 20:13:40,937 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 57213 states.
[2018-11-06 20:13:41,007 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57213 states to 57213 states and 61839 transitions.
[2018-11-06 20:13:41,007 INFO  L78                 Accepts]: Start accepts. Automaton has 57213 states and 61839 transitions. Word has length 2058
[2018-11-06 20:13:41,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:13:41,008 INFO  L480      AbstractCegarLoop]: Abstraction has 57213 states and 61839 transitions.
[2018-11-06 20:13:41,008 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:13:41,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 57213 states and 61839 transitions.
[2018-11-06 20:13:41,084 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2098
[2018-11-06 20:13:41,085 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:13:41,086 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:13:41,087 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:13:41,087 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:13:41,088 INFO  L82        PathProgramCache]: Analyzing trace with hash -274444714, now seen corresponding path program 1 times
[2018-11-06 20:13:41,088 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:13:41,088 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:13:41,089 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:41,089 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:13:41,089 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:41,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:13:42,023 WARN  L179               SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 11
[2018-11-06 20:13:43,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 847 backedges. 603 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked.
[2018-11-06 20:13:43,942 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:13:43,943 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:13:43,944 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:13:43,944 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:13:43,944 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:13:43,945 INFO  L87              Difference]: Start difference. First operand 57213 states and 61839 transitions. Second operand 4 states.
[2018-11-06 20:13:55,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:13:55,329 INFO  L93              Difference]: Finished difference Result 202910 states and 219666 transitions.
[2018-11-06 20:13:55,329 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:13:55,329 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2097
[2018-11-06 20:13:55,329 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:13:55,510 INFO  L225             Difference]: With dead ends: 202910
[2018-11-06 20:13:55,511 INFO  L226             Difference]: Without dead ends: 138899
[2018-11-06 20:13:55,579 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:13:55,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 138899 states.
[2018-11-06 20:13:57,206 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 138899 to 138778.
[2018-11-06 20:13:57,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 138778 states.
[2018-11-06 20:13:57,372 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 138778 states to 138778 states and 146655 transitions.
[2018-11-06 20:13:57,372 INFO  L78                 Accepts]: Start accepts. Automaton has 138778 states and 146655 transitions. Word has length 2097
[2018-11-06 20:13:57,373 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:13:57,373 INFO  L480      AbstractCegarLoop]: Abstraction has 138778 states and 146655 transitions.
[2018-11-06 20:13:57,373 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:13:57,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 138778 states and 146655 transitions.
[2018-11-06 20:13:57,509 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2135
[2018-11-06 20:13:57,509 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:13:57,511 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:13:57,511 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:13:57,511 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:13:57,512 INFO  L82        PathProgramCache]: Analyzing trace with hash 968579061, now seen corresponding path program 1 times
[2018-11-06 20:13:57,512 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:13:57,512 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:13:57,513 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:57,513 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:13:57,514 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:13:57,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:14:01,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 790 backedges. 444 proven. 0 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked.
[2018-11-06 20:14:01,707 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:14:01,707 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-11-06 20:14:01,709 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-11-06 20:14:01,709 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-11-06 20:14:01,709 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:14:01,710 INFO  L87              Difference]: Start difference. First operand 138778 states and 146655 transitions. Second operand 3 states.
[2018-11-06 20:14:09,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:14:09,612 INFO  L93              Difference]: Finished difference Result 333608 states and 354372 transitions.
[2018-11-06 20:14:09,612 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:14:09,613 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 2134
[2018-11-06 20:14:09,613 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:14:09,925 INFO  L225             Difference]: With dead ends: 333608
[2018-11-06 20:14:09,926 INFO  L226             Difference]: Without dead ends: 194832
[2018-11-06 20:14:10,065 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-11-06 20:14:10,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 194832 states.
[2018-11-06 20:14:12,275 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 194832 to 193133.
[2018-11-06 20:14:12,276 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 193133 states.
[2018-11-06 20:14:12,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 193133 states to 193133 states and 203357 transitions.
[2018-11-06 20:14:12,433 INFO  L78                 Accepts]: Start accepts. Automaton has 193133 states and 203357 transitions. Word has length 2134
[2018-11-06 20:14:12,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:14:12,433 INFO  L480      AbstractCegarLoop]: Abstraction has 193133 states and 203357 transitions.
[2018-11-06 20:14:12,433 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-11-06 20:14:12,433 INFO  L276                IsEmpty]: Start isEmpty. Operand 193133 states and 203357 transitions.
[2018-11-06 20:14:12,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2190
[2018-11-06 20:14:12,536 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:14:12,538 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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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]
[2018-11-06 20:14:12,538 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:14:12,538 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:14:12,539 INFO  L82        PathProgramCache]: Analyzing trace with hash -499755297, now seen corresponding path program 1 times
[2018-11-06 20:14:12,539 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:14:12,539 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:14:12,540 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:14:12,540 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:14:12,540 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:14:12,827 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:14:19,927 INFO  L134       CoverageAnalysis]: Checked inductivity of 498 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-11-06 20:14:19,927 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:14:19,928 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:14:19,929 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:14:19,929 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:14:19,929 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:14:19,930 INFO  L87              Difference]: Start difference. First operand 193133 states and 203357 transitions. Second operand 4 states.
[2018-11-06 20:14:28,849 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:14:28,849 INFO  L93              Difference]: Finished difference Result 384561 states and 404938 transitions.
[2018-11-06 20:14:28,850 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-11-06 20:14:28,850 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2189
[2018-11-06 20:14:28,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:14:29,069 INFO  L225             Difference]: With dead ends: 384561
[2018-11-06 20:14:29,069 INFO  L226             Difference]: Without dead ends: 191430
[2018-11-06 20:14:29,173 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:14:29,303 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 191430 states.
[2018-11-06 20:14:30,981 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 191430 to 191427.
[2018-11-06 20:14:30,981 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 191427 states.
[2018-11-06 20:14:31,154 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 191427 states to 191427 states and 198508 transitions.
[2018-11-06 20:14:31,154 INFO  L78                 Accepts]: Start accepts. Automaton has 191427 states and 198508 transitions. Word has length 2189
[2018-11-06 20:14:31,156 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-11-06 20:14:31,156 INFO  L480      AbstractCegarLoop]: Abstraction has 191427 states and 198508 transitions.
[2018-11-06 20:14:31,156 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-11-06 20:14:31,156 INFO  L276                IsEmpty]: Start isEmpty. Operand 191427 states and 198508 transitions.
[2018-11-06 20:14:31,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 2315
[2018-11-06 20:14:31,279 INFO  L367         BasicCegarLoop]: Found error trace
[2018-11-06 20:14:31,281 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-11-06 20:14:31,281 INFO  L423      AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-11-06 20:14:31,281 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-11-06 20:14:31,282 INFO  L82        PathProgramCache]: Analyzing trace with hash 16132144, now seen corresponding path program 1 times
[2018-11-06 20:14:31,282 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-11-06 20:14:31,282 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-11-06 20:14:31,283 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:14:31,283 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-11-06 20:14:31,283 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-11-06 20:14:31,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-11-06 20:14:32,859 WARN  L179               SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4
[2018-11-06 20:14:35,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 1186 backedges. 1004 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked.
[2018-11-06 20:14:35,822 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-11-06 20:14:35,822 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-11-06 20:14:35,824 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-11-06 20:14:35,824 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-11-06 20:14:35,824 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:14:35,824 INFO  L87              Difference]: Start difference. First operand 191427 states and 198508 transitions. Second operand 4 states.
[2018-11-06 20:14:48,929 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-11-06 20:14:48,930 INFO  L93              Difference]: Finished difference Result 447534 states and 465064 transitions.
[2018-11-06 20:14:48,930 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-11-06 20:14:48,930 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 2314
[2018-11-06 20:14:48,931 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-11-06 20:14:49,169 INFO  L225             Difference]: With dead ends: 447534
[2018-11-06 20:14:49,169 INFO  L226             Difference]: Without dead ends: 252708
[2018-11-06 20:14:49,248 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-11-06 20:14:49,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 252708 states.
[2018-11-06 20:14:51,969 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 252708 to 250881.
[2018-11-06 20:14:51,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 250881 states.
Received shutdown request...
[2018-11-06 20:14:52,050 WARN  L549      AbstractCegarLoop]: Verification canceled
[2018-11-06 20:14:52,056 WARN  L205   ceAbstractionStarter]: Timeout
[2018-11-06 20:14:52,056 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 08:14:52 BoogieIcfgContainer
[2018-11-06 20:14:52,057 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-11-06 20:14:52,058 INFO  L168              Benchmark]: Toolchain (without parser) took 221373.06 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -668.1 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,059 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,060 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 4120.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,062 INFO  L168              Benchmark]: Boogie Procedure Inliner took 767.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.4 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.2 MB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,063 INFO  L168              Benchmark]: Boogie Preprocessor took 412.30 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: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,064 INFO  L168              Benchmark]: RCFGBuilder took 14490.80 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 310.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -244.7 MB). Peak memory consumption was 841.1 MB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,065 INFO  L168              Benchmark]: TraceAbstraction took 201575.36 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 354.8 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB.
[2018-11-06 20:14:52,070 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 4120.18 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 767.04 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 850.4 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 97.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 412.30 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: 63.1 MB). Peak memory consumption was 63.1 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 14490.80 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 310.9 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -244.7 MB). Peak memory consumption was 841.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 201575.36 ms. Allocated memory was 2.7 GB in the beginning and 3.9 GB in the end (delta: 1.2 GB). Free memory was 2.4 GB in the beginning and 2.1 GB in the end (delta: 354.8 MB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 11105]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 11105). Cancelled while ReachableStatesComputation was computing reachable states (90691 states constructedinput type DoubleDeckerAutomaton).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 201.4s OverallTime, 9 OverallIterations, 6 TraceHistogramMax, 140.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18120 SDtfs, 40605 SDslu, 4279 SDs, 0 SdLazy, 89039 SolverSat, 21213 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 108.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=193133occurred 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: 11.5s AutomataMinimizationTime, 9 MinimizatonAttempts, 2821 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.9s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 12.8s InterpolantComputationTime, 17904 NumberOfCodeBlocks, 17904 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 17895 ConstructedInterpolants, 0 QuantifiedInterpolants, 115408615 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 4448/4448 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown