java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem06_label12.c


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


This is Ultimate 0.1.24-112bae1
[2019-09-07 15:07:54,972 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-09-07 15:07:54,974 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-09-07 15:07:54,990 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-09-07 15:07:54,990 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-09-07 15:07:54,991 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-09-07 15:07:54,993 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-09-07 15:07:55,000 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
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[2019-09-07 15:07:55,004 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-09-07 15:07:55,005 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-09-07 15:07:55,007 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-09-07 15:07:55,010 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-09-07 15:07:55,011 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-09-07 15:07:55,013 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
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[2019-09-07 15:07:55,020 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-09-07 15:07:55,036 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-09-07 15:07:55,037 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-09-07 15:07:55,038 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2019-09-07 15:07:55,055 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-09-07 15:07:55,056 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-09-07 15:07:55,057 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-09-07 15:07:55,061 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-09-07 15:07:55,061 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-09-07 15:07:55,062 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-09-07 15:07:55,062 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-09-07 15:07:55,062 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-09-07 15:07:55,062 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-09-07 15:07:55,062 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-09-07 15:07:55,063 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-09-07 15:07:55,063 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-09-07 15:07:55,063 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-09-07 15:07:55,063 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-09-07 15:07:55,064 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-09-07 15:07:55,064 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-09-07 15:07:55,064 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-09-07 15:07:55,065 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-09-07 15:07:55,065 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-09-07 15:07:55,065 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-09-07 15:07:55,065 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-09-07 15:07:55,065 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-07 15:07:55,066 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-09-07 15:07:55,066 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-09-07 15:07:55,066 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-09-07 15:07:55,066 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-09-07 15:07:55,067 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-09-07 15:07:55,067 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-09-07 15:07:55,067 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-09-07 15:07:55,101 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-09-07 15:07:55,117 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-09-07 15:07:55,121 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-09-07 15:07:55,123 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-09-07 15:07:55,123 INFO  L275        PluginConnector]: CDTParser initialized
[2019-09-07 15:07:55,124 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label12.c
[2019-09-07 15:07:55,190 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355e89972/108d6edcf7584b7b81e802c452a69f69/FLAG9ec1bee98
[2019-09-07 15:07:56,151 INFO  L306              CDTParser]: Found 1 translation units.
[2019-09-07 15:07:56,153 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label12.c
[2019-09-07 15:07:56,191 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355e89972/108d6edcf7584b7b81e802c452a69f69/FLAG9ec1bee98
[2019-09-07 15:07:56,539 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/355e89972/108d6edcf7584b7b81e802c452a69f69
[2019-09-07 15:07:56,551 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-09-07 15:07:56,553 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-09-07 15:07:56,554 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-09-07 15:07:56,554 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-09-07 15:07:56,558 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-09-07 15:07:56,559 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:07:56" (1/1) ...
[2019-09-07 15:07:56,562 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35f89b98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:07:56, skipping insertion in model container
[2019-09-07 15:07:56,563 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:07:56" (1/1) ...
[2019-09-07 15:07:56,571 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-09-07 15:07:56,777 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-09-07 15:07:59,042 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:07:59,056 INFO  L188         MainTranslator]: Completed pre-run
[2019-09-07 15:08:00,154 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:08:00,297 INFO  L192         MainTranslator]: Completed translation
[2019-09-07 15:08:00,298 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00 WrapperNode
[2019-09-07 15:08:00,298 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-09-07 15:08:00,299 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-09-07 15:08:00,299 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-09-07 15:08:00,299 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-09-07 15:08:00,313 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,313 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,389 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,391 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,583 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,664 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,715 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (1/1) ...
[2019-09-07 15:08:00,772 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-09-07 15:08:00,773 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-09-07 15:08:00,773 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-09-07 15:08:00,773 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-09-07 15:08:00,774 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (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
[2019-09-07 15:08:00,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-09-07 15:08:00,856 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-09-07 15:08:00,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-09-07 15:08:00,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-09-07 15:08:00,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-09-07 15:08:00,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-09-07 15:08:00,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2019-09-07 15:08:00,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-09-07 15:08:00,859 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-09-07 15:08:00,859 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-09-07 15:08:00,859 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-09-07 15:08:00,860 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-09-07 15:08:00,860 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2019-09-07 15:08:00,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-09-07 15:08:00,861 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-09-07 15:08:00,862 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-09-07 15:08:00,863 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-09-07 15:08:00,863 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-09-07 15:08:00,863 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-09-07 15:08:08,723 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-09-07 15:08:08,723 INFO  L283             CfgBuilder]: Removed 1 assume(true) statements.
[2019-09-07 15:08:08,725 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:08:08 BoogieIcfgContainer
[2019-09-07 15:08:08,725 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-09-07 15:08:08,726 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-09-07 15:08:08,727 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-09-07 15:08:08,730 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-09-07 15:08:08,730 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:07:56" (1/3) ...
[2019-09-07 15:08:08,731 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d565f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:08:08, skipping insertion in model container
[2019-09-07 15:08:08,731 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:08:00" (2/3) ...
[2019-09-07 15:08:08,732 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d565f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:08:08, skipping insertion in model container
[2019-09-07 15:08:08,732 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:08:08" (3/3) ...
[2019-09-07 15:08:08,736 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem06_label12.c
[2019-09-07 15:08:08,746 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-09-07 15:08:08,756 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-09-07 15:08:08,773 INFO  L252      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-09-07 15:08:08,814 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2019-09-07 15:08:08,815 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2019-09-07 15:08:08,815 INFO  L378      AbstractCegarLoop]: Hoare is true
[2019-09-07 15:08:08,815 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-09-07 15:08:08,815 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-09-07 15:08:08,815 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-09-07 15:08:08,816 INFO  L382      AbstractCegarLoop]: Difference is false
[2019-09-07 15:08:08,816 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-09-07 15:08:08,816 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-09-07 15:08:08,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 1315 states.
[2019-09-07 15:08:08,922 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 945
[2019-09-07 15:08:08,922 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:08:08,924 INFO  L399         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]
[2019-09-07 15:08:08,927 INFO  L418      AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:08:08,932 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:08:08,933 INFO  L82        PathProgramCache]: Analyzing trace with hash -1947900265, now seen corresponding path program 1 times
[2019-09-07 15:08:08,935 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:08:08,936 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:08:08,989 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:08,990 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:08:08,990 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:09,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:11,781 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:08:11,783 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:08:11,784 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-09-07 15:08:11,791 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-09-07 15:08:11,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-09-07 15:08:11,806 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:08:11,808 INFO  L87              Difference]: Start difference. First operand 1315 states. Second operand 3 states.
[2019-09-07 15:08:19,224 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:08:19,224 INFO  L93              Difference]: Finished difference Result 3721 states and 6974 transitions.
[2019-09-07 15:08:19,225 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-09-07 15:08:19,226 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 944
[2019-09-07 15:08:19,236 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:08:19,278 INFO  L225             Difference]: With dead ends: 3721
[2019-09-07 15:08:19,278 INFO  L226             Difference]: Without dead ends: 2344
[2019-09-07 15:08:19,295 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:08:19,318 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2344 states.
[2019-09-07 15:08:19,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2344 to 2305.
[2019-09-07 15:08:19,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2305 states.
[2019-09-07 15:08:19,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 4213 transitions.
[2019-09-07 15:08:19,466 INFO  L78                 Accepts]: Start accepts. Automaton has 2305 states and 4213 transitions. Word has length 944
[2019-09-07 15:08:19,469 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:08:19,469 INFO  L475      AbstractCegarLoop]: Abstraction has 2305 states and 4213 transitions.
[2019-09-07 15:08:19,470 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-09-07 15:08:19,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 2305 states and 4213 transitions.
[2019-09-07 15:08:19,504 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 953
[2019-09-07 15:08:19,504 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:08:19,505 INFO  L399         BasicCegarLoop]: trace histogram [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]
[2019-09-07 15:08:19,506 INFO  L418      AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:08:19,506 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:08:19,507 INFO  L82        PathProgramCache]: Analyzing trace with hash 1079669186, now seen corresponding path program 1 times
[2019-09-07 15:08:19,507 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:08:19,507 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:08:19,508 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:19,508 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:08:19,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:19,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:20,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:08:20,657 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:08:20,658 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-09-07 15:08:20,662 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-09-07 15:08:20,663 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-09-07 15:08:20,664 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-09-07 15:08:20,664 INFO  L87              Difference]: Start difference. First operand 2305 states and 4213 transitions. Second operand 5 states.
[2019-09-07 15:08:30,095 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:08:30,096 INFO  L93              Difference]: Finished difference Result 6814 states and 12584 transitions.
[2019-09-07 15:08:30,096 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-09-07 15:08:30,097 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 952
[2019-09-07 15:08:30,097 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:08:30,123 INFO  L225             Difference]: With dead ends: 6814
[2019-09-07 15:08:30,124 INFO  L226             Difference]: Without dead ends: 4515
[2019-09-07 15:08:30,131 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-09-07 15:08:30,138 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4515 states.
[2019-09-07 15:08:30,248 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4515 to 4417.
[2019-09-07 15:08:30,248 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4417 states.
[2019-09-07 15:08:30,262 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4417 states to 4417 states and 7635 transitions.
[2019-09-07 15:08:30,263 INFO  L78                 Accepts]: Start accepts. Automaton has 4417 states and 7635 transitions. Word has length 952
[2019-09-07 15:08:30,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:08:30,263 INFO  L475      AbstractCegarLoop]: Abstraction has 4417 states and 7635 transitions.
[2019-09-07 15:08:30,264 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-09-07 15:08:30,264 INFO  L276                IsEmpty]: Start isEmpty. Operand 4417 states and 7635 transitions.
[2019-09-07 15:08:30,291 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 965
[2019-09-07 15:08:30,291 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:08:30,292 INFO  L399         BasicCegarLoop]: trace histogram [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]
[2019-09-07 15:08:30,293 INFO  L418      AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:08:30,293 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:08:30,293 INFO  L82        PathProgramCache]: Analyzing trace with hash 134351461, now seen corresponding path program 1 times
[2019-09-07 15:08:30,294 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:08:30,294 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:08:30,295 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:30,295 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:08:30,295 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:30,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:31,424 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:08:31,424 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:08:31,424 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
[2019-09-07 15:08:31,456 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:08:32,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:32,017 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2296 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:08:32,056 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:08:32,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:08:32,827 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:08:32,828 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-09-07 15:08:32,830 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-09-07 15:08:32,830 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-09-07 15:08:32,830 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2019-09-07 15:08:32,831 INFO  L87              Difference]: Start difference. First operand 4417 states and 7635 transitions. Second operand 12 states.
[2019-09-07 15:09:16,270 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:09:16,271 INFO  L93              Difference]: Finished difference Result 43142 states and 83924 transitions.
[2019-09-07 15:09:16,279 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2019-09-07 15:09:16,280 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 964
[2019-09-07 15:09:16,280 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:09:16,562 INFO  L225             Difference]: With dead ends: 43142
[2019-09-07 15:09:16,562 INFO  L226             Difference]: Without dead ends: 38731
[2019-09-07 15:09:16,604 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1053 GetRequests, 1002 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 886 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756
[2019-09-07 15:09:16,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 38731 states.
[2019-09-07 15:09:17,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 38731 to 38553.
[2019-09-07 15:09:17,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 38553 states.
[2019-09-07 15:09:18,043 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 38553 states to 38553 states and 66003 transitions.
[2019-09-07 15:09:18,044 INFO  L78                 Accepts]: Start accepts. Automaton has 38553 states and 66003 transitions. Word has length 964
[2019-09-07 15:09:18,044 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:09:18,044 INFO  L475      AbstractCegarLoop]: Abstraction has 38553 states and 66003 transitions.
[2019-09-07 15:09:18,044 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-09-07 15:09:18,044 INFO  L276                IsEmpty]: Start isEmpty. Operand 38553 states and 66003 transitions.
[2019-09-07 15:09:18,238 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 970
[2019-09-07 15:09:18,238 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:09:18,242 INFO  L399         BasicCegarLoop]: trace histogram [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]
[2019-09-07 15:09:18,243 INFO  L418      AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:09:18,243 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:09:18,244 INFO  L82        PathProgramCache]: Analyzing trace with hash 1875566640, now seen corresponding path program 1 times
[2019-09-07 15:09:18,244 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:09:18,244 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:09:18,245 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:09:18,245 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:09:18,245 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:09:18,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:09:20,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:09:20,696 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:09:20,696 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:09:20,717 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:09:21,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:09:21,395 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2119 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-09-07 15:09:21,417 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:09:22,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:09:22,364 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-09-07 15:09:22,364 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8
[2019-09-07 15:09:22,366 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-09-07 15:09:22,367 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-09-07 15:09:22,367 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2019-09-07 15:09:22,367 INFO  L87              Difference]: Start difference. First operand 38553 states and 66003 transitions. Second operand 8 states.
[2019-09-07 15:10:05,607 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:10:05,607 INFO  L93              Difference]: Finished difference Result 320982 states and 838310 transitions.
[2019-09-07 15:10:05,608 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2019-09-07 15:10:05,608 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 969
[2019-09-07 15:10:05,610 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:10:10,566 INFO  L225             Difference]: With dead ends: 320982
[2019-09-07 15:10:10,566 INFO  L226             Difference]: Without dead ends: 282435
[2019-09-07 15:10:11,070 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1024 GetRequests, 997 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=219, Invalid=593, Unknown=0, NotChecked=0, Total=812
[2019-09-07 15:10:11,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 282435 states.
[2019-09-07 15:10:32,160 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 282435 to 280563.
[2019-09-07 15:10:32,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 280563 states.
[2019-09-07 15:10:34,038 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 280563 states to 280563 states and 636027 transitions.
[2019-09-07 15:10:34,039 INFO  L78                 Accepts]: Start accepts. Automaton has 280563 states and 636027 transitions. Word has length 969
[2019-09-07 15:10:34,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:10:34,041 INFO  L475      AbstractCegarLoop]: Abstraction has 280563 states and 636027 transitions.
[2019-09-07 15:10:34,041 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-09-07 15:10:34,042 INFO  L276                IsEmpty]: Start isEmpty. Operand 280563 states and 636027 transitions.
[2019-09-07 15:10:35,873 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 994
[2019-09-07 15:10:35,873 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:10:35,876 INFO  L399         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-09-07 15:10:35,876 INFO  L418      AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:10:35,877 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:10:35,877 INFO  L82        PathProgramCache]: Analyzing trace with hash 1627046679, now seen corresponding path program 1 times
[2019-09-07 15:10:35,877 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:10:35,877 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:10:35,880 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:10:35,880 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:10:35,880 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:10:35,970 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:10:43,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:10:43,374 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:10:43,374 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
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)
[2019-09-07 15:10:43,398 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:10:43,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:10:43,913 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2319 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:10:43,925 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:10:44,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:10:44,404 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:10:44,404 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9
[2019-09-07 15:10:44,406 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-09-07 15:10:44,406 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-09-07 15:10:44,406 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:10:44,406 INFO  L87              Difference]: Start difference. First operand 280563 states and 636027 transitions. Second operand 9 states.
[2019-09-07 15:12:11,365 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:12:11,366 INFO  L93              Difference]: Finished difference Result 1235265 states and 3956108 transitions.
[2019-09-07 15:12:11,366 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2019-09-07 15:12:11,366 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 993
[2019-09-07 15:12:11,367 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:12:32,025 INFO  L225             Difference]: With dead ends: 1235265
[2019-09-07 15:12:32,025 INFO  L226             Difference]: Without dead ends: 954708
[2019-09-07 15:12:35,026 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 1000 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=330, Invalid=1230, Unknown=0, NotChecked=0, Total=1560
[2019-09-07 15:12:35,835 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 954708 states.