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 --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label30_true-unreach-call.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.23-dace188-m
[2018-09-14 16:30:28,734 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-09-14 16:30:28,736 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-09-14 16:30:28,748 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-09-14 16:30:28,749 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-09-14 16:30:28,750 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-09-14 16:30:28,751 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-09-14 16:30:28,753 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-09-14 16:30:28,754 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
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[2018-09-14 16:30:28,756 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-09-14 16:30:28,757 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
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[2018-09-14 16:30:28,763 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-09-14 16:30:28,767 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-09-14 16:30:28,768 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-14 16:30:28,772 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-14 16:30:28,777 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-14 16:30:28,782 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-14 16:30:28,783 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-09-14 16:30:28,786 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-09-14 16:30:28,789 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-09-14 16:30:28,789 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-09-14 16:30:28,792 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-14 16:30:28,794 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-09-14 16:30:28,795 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-09-14 16:30:28,796 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-09-14 16:30:28,800 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-09-14 16:30:28,800 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
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[2018-09-14 16:30:28,801 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-09-14 16:30:28,806 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-09-14 16:30:28,806 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf
[2018-09-14 16:30:28,829 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-09-14 16:30:28,831 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-14 16:30:28,831 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-14 16:30:28,832 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-09-14 16:30:28,832 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-09-14 16:30:28,832 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-09-14 16:30:28,832 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-09-14 16:30:28,833 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-09-14 16:30:28,833 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-09-14 16:30:28,833 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-09-14 16:30:28,833 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-09-14 16:30:28,834 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-14 16:30:28,834 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-09-14 16:30:28,835 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-09-14 16:30:28,835 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-09-14 16:30:28,835 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-14 16:30:28,835 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-09-14 16:30:28,837 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-09-14 16:30:28,837 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-09-14 16:30:28,837 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-14 16:30:28,838 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-09-14 16:30:28,838 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-09-14 16:30:28,838 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-09-14 16:30:28,838 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-14 16:30:28,838 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-14 16:30:28,839 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-09-14 16:30:28,839 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-14 16:30:28,839 INFO  L133        SettingsManager]:  * Trace refinement strategy=RUBBER_TAIPAN
[2018-09-14 16:30:28,840 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-14 16:30:28,840 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-14 16:30:28,841 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-14 16:30:28,841 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-09-14 16:30:28,841 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-09-14 16:30:28,897 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-14 16:30:28,911 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-14 16:30:28,915 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-14 16:30:28,916 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-09-14 16:30:28,917 INFO  L276        PluginConnector]: CDTParser initialized
[2018-09-14 16:30:28,918 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label30_true-unreach-call.c
[2018-09-14 16:30:29,270 INFO  L221              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6ea82a/09b737552b4244efab168432f2513981/FLAGf5194876d
[2018-09-14 16:30:29,890 INFO  L277              CDTParser]: Found 1 translation units.
[2018-09-14 16:30:29,891 INFO  L159              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label30_true-unreach-call.c
[2018-09-14 16:30:29,936 INFO  L325              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6ea82a/09b737552b4244efab168432f2513981/FLAGf5194876d
[2018-09-14 16:30:29,954 INFO  L333              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f6ea82a/09b737552b4244efab168432f2513981
[2018-09-14 16:30:29,966 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-14 16:30:29,969 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-09-14 16:30:29,970 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-09-14 16:30:29,971 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-09-14 16:30:29,977 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-09-14 16:30:29,978 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:30:29" (1/1) ...
[2018-09-14 16:30:29,982 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4744f612 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:29, skipping insertion in model container
[2018-09-14 16:30:29,982 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 04:30:29" (1/1) ...
[2018-09-14 16:30:29,995 INFO  L160   ieTranslatorObserver]: Starting translation in  SV-COMP mode 
[2018-09-14 16:30:32,077 INFO  L170          PostProcessor]: Settings: Checked method=main
[2018-09-14 16:30:32,098 INFO  L424         MainDispatcher]: Starting main dispatcher in SV-COMP mode 
[2018-09-14 16:30:33,406 INFO  L170          PostProcessor]: Settings: Checked method=main
[2018-09-14 16:30:33,682 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33 WrapperNode
[2018-09-14 16:30:33,683 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-09-14 16:30:33,684 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-14 16:30:33,684 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-14 16:30:33,684 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-14 16:30:33,694 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:33,945 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,000 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-14 16:30:34,001 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-14 16:30:34,001 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-14 16:30:34,001 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-09-14 16:30:34,576 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,577 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,607 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,607 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,744 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,785 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,829 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (1/1) ...
[2018-09-14 16:30:34,882 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-14 16:30:34,882 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-14 16:30:34,883 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-09-14 16:30:34,883 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-09-14 16:30:34,884 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (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
[2018-09-14 16:30:34,952 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-09-14 16:30:34,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-09-14 16:30:34,952 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2018-09-14 16:30:34,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2018-09-14 16:30:34,953 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2018-09-14 16:30:34,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2018-09-14 16:30:34,953 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2018-09-14 16:30:34,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2018-09-14 16:30:34,953 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2018-09-14 16:30:34,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2018-09-14 16:30:34,954 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2018-09-14 16:30:34,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-09-14 16:30:34,954 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-09-14 16:30:34,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-09-14 16:30:34,955 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-09-14 16:30:34,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-09-14 16:30:48,124 INFO  L353             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-09-14 16:30:48,125 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:30:48 BoogieIcfgContainer
[2018-09-14 16:30:48,125 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-14 16:30:48,126 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-14 16:30:48,126 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-09-14 16:30:48,130 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-09-14 16:30:48,130 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 04:30:29" (1/3) ...
[2018-09-14 16:30:48,131 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6950f38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:30:48, skipping insertion in model container
[2018-09-14 16:30:48,131 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 04:30:33" (2/3) ...
[2018-09-14 16:30:48,132 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6950f38a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 04:30:48, skipping insertion in model container
[2018-09-14 16:30:48,132 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 04:30:48" (3/3) ...
[2018-09-14 16:30:48,134 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem06_label30_true-unreach-call.c
[2018-09-14 16:30:48,144 INFO  L137   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-14 16:30:48,155 INFO  L149   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-14 16:30:48,229 INFO  L130   ementStrategyFactory]: Using default assertion order modulation
[2018-09-14 16:30:48,230 INFO  L381      AbstractCegarLoop]: Interprodecural is true
[2018-09-14 16:30:48,231 INFO  L382      AbstractCegarLoop]: Hoare is true
[2018-09-14 16:30:48,231 INFO  L383      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-14 16:30:48,231 INFO  L384      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-14 16:30:48,231 INFO  L385      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-14 16:30:48,231 INFO  L386      AbstractCegarLoop]: Difference is false
[2018-09-14 16:30:48,231 INFO  L387      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-14 16:30:48,231 INFO  L392      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-14 16:30:48,278 INFO  L276                IsEmpty]: Start isEmpty. Operand 1316 states.
[2018-09-14 16:30:48,355 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 976
[2018-09-14 16:30:48,356 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:30:48,358 INFO  L376         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-14 16:30:48,359 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:30:48,366 INFO  L82        PathProgramCache]: Analyzing trace with hash 922961151, now seen corresponding path program 1 times
[2018-09-14 16:30:48,369 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:30:48,423 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:30:48,424 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:30:48,424 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:30:48,424 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:30:49,131 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:30:50,730 WARN  L178               SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-14 16:30:52,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:30:52,180 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-14 16:30:52,181 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-14 16:30:52,181 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-14 16:30:52,190 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-14 16:30:52,203 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-14 16:30:52,203 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-14 16:30:52,206 INFO  L87              Difference]: Start difference. First operand 1316 states. Second operand 3 states.
[2018-09-14 16:31:01,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:31:01,260 INFO  L93              Difference]: Finished difference Result 3736 states and 6973 transitions.
[2018-09-14 16:31:01,261 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-09-14 16:31:01,266 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 975
[2018-09-14 16:31:01,281 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:31:01,342 INFO  L225             Difference]: With dead ends: 3736
[2018-09-14 16:31:01,342 INFO  L226             Difference]: Without dead ends: 2418
[2018-09-14 16:31:01,358 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-09-14 16:31:01,384 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2418 states.
[2018-09-14 16:31:01,559 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2418 to 2399.
[2018-09-14 16:31:01,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2399 states.
[2018-09-14 16:31:01,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2399 states to 2399 states and 4263 transitions.
[2018-09-14 16:31:01,577 INFO  L78                 Accepts]: Start accepts. Automaton has 2399 states and 4263 transitions. Word has length 975
[2018-09-14 16:31:01,582 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:31:01,583 INFO  L480      AbstractCegarLoop]: Abstraction has 2399 states and 4263 transitions.
[2018-09-14 16:31:01,583 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-14 16:31:01,583 INFO  L276                IsEmpty]: Start isEmpty. Operand 2399 states and 4263 transitions.
[2018-09-14 16:31:01,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 985
[2018-09-14 16:31:01,623 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:31:01,624 INFO  L376         BasicCegarLoop]: trace histogram [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]
[2018-09-14 16:31:01,625 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:31:01,626 INFO  L82        PathProgramCache]: Analyzing trace with hash -780404129, now seen corresponding path program 1 times
[2018-09-14 16:31:01,626 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:31:01,627 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:31:01,628 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:31:01,628 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:31:01,628 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:31:01,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:31:02,081 WARN  L178               SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-14 16:31:02,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:02,879 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-14 16:31:02,879 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-09-14 16:31:02,880 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-14 16:31:02,884 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-14 16:31:02,884 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-14 16:31:02,885 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-09-14 16:31:02,885 INFO  L87              Difference]: Start difference. First operand 2399 states and 4263 transitions. Second operand 5 states.
[2018-09-14 16:31:15,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:31:15,252 INFO  L93              Difference]: Finished difference Result 5945 states and 10532 transitions.
[2018-09-14 16:31:15,259 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-09-14 16:31:15,259 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 984
[2018-09-14 16:31:15,259 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:31:15,282 INFO  L225             Difference]: With dead ends: 5945
[2018-09-14 16:31:15,282 INFO  L226             Difference]: Without dead ends: 3552
[2018-09-14 16:31:15,290 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-09-14 16:31:15,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3552 states.
[2018-09-14 16:31:15,382 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3552 to 3492.
[2018-09-14 16:31:15,383 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3492 states.
[2018-09-14 16:31:15,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 5595 transitions.
[2018-09-14 16:31:15,397 INFO  L78                 Accepts]: Start accepts. Automaton has 3492 states and 5595 transitions. Word has length 984
[2018-09-14 16:31:15,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:31:15,397 INFO  L480      AbstractCegarLoop]: Abstraction has 3492 states and 5595 transitions.
[2018-09-14 16:31:15,397 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-14 16:31:15,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 3492 states and 5595 transitions.
[2018-09-14 16:31:15,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 998
[2018-09-14 16:31:15,423 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:31:15,424 INFO  L376         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-14 16:31:15,424 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:31:15,425 INFO  L82        PathProgramCache]: Analyzing trace with hash 246656887, now seen corresponding path program 1 times
[2018-09-14 16:31:15,425 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:31:15,426 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:31:15,427 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:31:15,427 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:31:15,427 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:31:15,544 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:31:17,022 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 17 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:17,023 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-14 16:31:17,023 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-14 16:31:17,037 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:31:17,038 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-14 16:31:17,568 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:31:17,621 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-14 16:31:18,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:18,915 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-14 16:31:19,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:19,753 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-14 16:31:19,753 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-14 16:31:19,769 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:31:19,769 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-14 16:31:20,924 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:31:20,987 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-14 16:31:22,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:22,319 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-14 16:31:23,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:31:23,198 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-14 16:31:23,199 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5, 5, 5] total 20
[2018-09-14 16:31:23,199 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-14 16:31:23,202 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-14 16:31:23,203 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-14 16:31:23,203 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380
[2018-09-14 16:31:23,203 INFO  L87              Difference]: Start difference. First operand 3492 states and 5595 transitions. Second operand 12 states.
[2018-09-14 16:32:09,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:32:09,378 INFO  L93              Difference]: Finished difference Result 33324 states and 59296 transitions.
[2018-09-14 16:32:09,381 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2018-09-14 16:32:09,382 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 997
[2018-09-14 16:32:09,382 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:32:09,594 INFO  L225             Difference]: With dead ends: 33324
[2018-09-14 16:32:09,594 INFO  L226             Difference]: Without dead ends: 29838
[2018-09-14 16:32:09,630 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4076 GetRequests, 4016 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1003 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=635, Invalid=3025, Unknown=0, NotChecked=0, Total=3660
[2018-09-14 16:32:09,661 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29838 states.
[2018-09-14 16:32:10,735 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29838 to 29670.
[2018-09-14 16:32:10,735 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29670 states.
[2018-09-14 16:32:10,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29670 states to 29670 states and 47195 transitions.
[2018-09-14 16:32:10,834 INFO  L78                 Accepts]: Start accepts. Automaton has 29670 states and 47195 transitions. Word has length 997
[2018-09-14 16:32:10,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:32:10,834 INFO  L480      AbstractCegarLoop]: Abstraction has 29670 states and 47195 transitions.
[2018-09-14 16:32:10,835 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-09-14 16:32:10,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 29670 states and 47195 transitions.
[2018-09-14 16:32:10,996 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 997
[2018-09-14 16:32:10,996 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:32:10,997 INFO  L376         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-14 16:32:10,998 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:32:10,998 INFO  L82        PathProgramCache]: Analyzing trace with hash 1391769822, now seen corresponding path program 1 times
[2018-09-14 16:32:10,999 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:32:11,000 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:32:11,000 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:32:11,000 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:32:11,000 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:32:11,107 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:32:11,424 WARN  L178               SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-14 16:32:12,319 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:12,319 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-14 16:32:12,319 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-09-14 16:32:12,320 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-14 16:32:12,321 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-09-14 16:32:12,321 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-09-14 16:32:12,322 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-09-14 16:32:12,322 INFO  L87              Difference]: Start difference. First operand 29670 states and 47195 transitions. Second operand 6 states.
[2018-09-14 16:32:24,022 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:32:24,023 INFO  L93              Difference]: Finished difference Result 91330 states and 170131 transitions.
[2018-09-14 16:32:24,023 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-09-14 16:32:24,023 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 996
[2018-09-14 16:32:24,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:32:24,397 INFO  L225             Difference]: With dead ends: 91330
[2018-09-14 16:32:24,398 INFO  L226             Difference]: Without dead ends: 61666
[2018-09-14 16:32:24,509 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-09-14 16:32:24,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61666 states.
[2018-09-14 16:32:26,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61666 to 60605.
[2018-09-14 16:32:26,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60605 states.
[2018-09-14 16:32:26,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60605 states to 60605 states and 106403 transitions.
[2018-09-14 16:32:26,481 INFO  L78                 Accepts]: Start accepts. Automaton has 60605 states and 106403 transitions. Word has length 996
[2018-09-14 16:32:26,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:32:26,481 INFO  L480      AbstractCegarLoop]: Abstraction has 60605 states and 106403 transitions.
[2018-09-14 16:32:26,482 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-09-14 16:32:26,482 INFO  L276                IsEmpty]: Start isEmpty. Operand 60605 states and 106403 transitions.
[2018-09-14 16:32:26,707 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1000
[2018-09-14 16:32:26,708 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:32:26,709 INFO  L376         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-14 16:32:26,709 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:32:26,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 227419835, now seen corresponding path program 1 times
[2018-09-14 16:32:26,710 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:32:26,710 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:32:26,711 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:32:26,711 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:32:26,711 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:32:26,802 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:32:27,835 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:27,835 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-14 16:32:27,836 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-14 16:32:27,850 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:32:27,851 INFO  L295   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-14 16:32:28,808 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:32:28,834 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-14 16:32:29,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:29,605 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-14 16:32:30,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:30,151 INFO  L301   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-14 16:32:30,152 INFO  L197   anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-14 16:32:30,167 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:32:30,168 INFO  L295   anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-14 16:32:31,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:32:31,543 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-09-14 16:32:31,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:31,965 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
[2018-09-14 16:32:32,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:32:32,471 INFO  L313   seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-14 16:32:32,472 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17
[2018-09-14 16:32:32,472 INFO  L258   anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-14 16:32:32,474 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-09-14 16:32:32,475 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-09-14 16:32:32,475 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272
[2018-09-14 16:32:32,476 INFO  L87              Difference]: Start difference. First operand 60605 states and 106403 transitions. Second operand 9 states.
[2018-09-14 16:32:33,208 WARN  L178               SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7
[2018-09-14 16:32:51,856 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:32:51,856 INFO  L93              Difference]: Finished difference Result 185045 states and 435083 transitions.
[2018-09-14 16:32:51,857 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2018-09-14 16:32:51,857 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 999
[2018-09-14 16:32:51,857 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:32:53,229 INFO  L225             Difference]: With dead ends: 185045
[2018-09-14 16:32:53,229 INFO  L226             Difference]: Without dead ends: 124446
[2018-09-14 16:32:53,462 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 4010 GetRequests, 3989 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=114, Invalid=392, Unknown=0, NotChecked=0, Total=506
[2018-09-14 16:32:53,567 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 124446 states.
[2018-09-14 16:32:59,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 124446 to 123374.
[2018-09-14 16:32:59,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 123374 states.
[2018-09-14 16:33:00,412 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 123374 states to 123374 states and 277283 transitions.
[2018-09-14 16:33:00,413 INFO  L78                 Accepts]: Start accepts. Automaton has 123374 states and 277283 transitions. Word has length 999
[2018-09-14 16:33:00,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:33:00,413 INFO  L480      AbstractCegarLoop]: Abstraction has 123374 states and 277283 transitions.
[2018-09-14 16:33:00,414 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-09-14 16:33:00,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 123374 states and 277283 transitions.
[2018-09-14 16:33:01,441 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1004
[2018-09-14 16:33:01,441 INFO  L368         BasicCegarLoop]: Found error trace
[2018-09-14 16:33:01,442 INFO  L376         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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-14 16:33:01,443 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-14 16:33:01,443 INFO  L82        PathProgramCache]: Analyzing trace with hash 1391405821, now seen corresponding path program 1 times
[2018-09-14 16:33:01,443 INFO  L69    tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-14 16:33:01,444 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:33:01,444 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-14 16:33:01,444 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-14 16:33:01,444 INFO  L295   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-14 16:33:01,730 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-14 16:33:05,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-14 16:33:05,003 INFO  L313   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-14 16:33:05,003 INFO  L328   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-09-14 16:33:05,004 INFO  L265   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-14 16:33:05,005 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-09-14 16:33:05,005 INFO  L147   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-09-14 16:33:05,005 INFO  L148   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-14 16:33:05,006 INFO  L87              Difference]: Start difference. First operand 123374 states and 277283 transitions. Second operand 4 states.
[2018-09-14 16:33:30,699 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-14 16:33:30,700 INFO  L93              Difference]: Finished difference Result 464748 states and 1285083 transitions.
[2018-09-14 16:33:30,700 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-09-14 16:33:30,700 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 1003
[2018-09-14 16:33:30,702 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-14 16:33:35,417 INFO  L225             Difference]: With dead ends: 464748
[2018-09-14 16:33:35,417 INFO  L226             Difference]: Without dead ends: 341380
[2018-09-14 16:33:36,056 INFO  L604         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-14 16:33:37,086 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 341380 states.
[2018-09-14 16:33:52,037 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 341380 to 340849.
[2018-09-14 16:33:52,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 340849 states.
[2018-09-14 16:33:56,423 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 340849 states to 340849 states and 901985 transitions.
[2018-09-14 16:33:56,425 INFO  L78                 Accepts]: Start accepts. Automaton has 340849 states and 901985 transitions. Word has length 1003
[2018-09-14 16:33:56,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-09-14 16:33:56,426 INFO  L480      AbstractCegarLoop]: Abstraction has 340849 states and 901985 transitions.
[2018-09-14 16:33:56,426 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-09-14 16:33:56,426 INFO  L276                IsEmpty]: Start isEmpty. Operand 340849 states and 901985 transitions.