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_label07.c


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


This is Ultimate 0.1.24-112bae1
[2019-09-07 15:05:33,952 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-09-07 15:05:33,954 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-09-07 15:05:33,966 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-09-07 15:05:33,967 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-09-07 15:05:33,968 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-09-07 15:05:33,969 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-09-07 15:05:33,971 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-09-07 15:05:33,973 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-09-07 15:05:33,974 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-09-07 15:05:33,975 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-09-07 15:05:33,976 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-09-07 15:05:33,976 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-09-07 15:05:33,977 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-09-07 15:05:33,978 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-09-07 15:05:33,979 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-09-07 15:05:33,980 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-09-07 15:05:33,981 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-09-07 15:05:33,983 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-09-07 15:05:33,985 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-09-07 15:05:33,986 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-09-07 15:05:33,987 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-09-07 15:05:33,988 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-09-07 15:05:33,989 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-09-07 15:05:33,991 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-09-07 15:05:33,992 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-09-07 15:05:33,992 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-09-07 15:05:33,993 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-09-07 15:05:33,993 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-09-07 15:05:33,994 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-09-07 15:05:33,995 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-09-07 15:05:33,995 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-09-07 15:05:33,996 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-09-07 15:05:33,997 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-09-07 15:05:33,998 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-09-07 15:05:33,998 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-09-07 15:05:33,999 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-09-07 15:05:33,999 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-09-07 15:05:33,999 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-09-07 15:05:34,000 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-09-07 15:05:34,001 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-09-07 15:05:34,002 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 15:05:34,016 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-09-07 15:05:34,016 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-09-07 15:05:34,018 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-09-07 15:05:34,018 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-09-07 15:05:34,018 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-09-07 15:05:34,018 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-09-07 15:05:34,018 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-09-07 15:05:34,019 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-09-07 15:05:34,019 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-09-07 15:05:34,019 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-09-07 15:05:34,019 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-09-07 15:05:34,019 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-09-07 15:05:34,020 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-09-07 15:05:34,020 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-09-07 15:05:34,020 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-09-07 15:05:34,020 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-09-07 15:05:34,020 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-09-07 15:05:34,021 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-09-07 15:05:34,021 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-09-07 15:05:34,021 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-09-07 15:05:34,021 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-09-07 15:05:34,021 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-07 15:05:34,022 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-09-07 15:05:34,022 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-09-07 15:05:34,022 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-09-07 15:05:34,022 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-09-07 15:05:34,022 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-09-07 15:05:34,023 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-09-07 15:05:34,023 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-09-07 15:05:34,052 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-09-07 15:05:34,066 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-09-07 15:05:34,069 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-09-07 15:05:34,071 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-09-07 15:05:34,071 INFO  L275        PluginConnector]: CDTParser initialized
[2019-09-07 15:05:34,072 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label07.c
[2019-09-07 15:05:34,153 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2f62472/dc07a47c406141f8856f983f8a534266/FLAGace2e8428
[2019-09-07 15:05:35,339 INFO  L306              CDTParser]: Found 1 translation units.
[2019-09-07 15:05:35,341 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label07.c
[2019-09-07 15:05:35,400 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2f62472/dc07a47c406141f8856f983f8a534266/FLAGace2e8428
[2019-09-07 15:05:35,549 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b2f62472/dc07a47c406141f8856f983f8a534266
[2019-09-07 15:05:35,564 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-09-07 15:05:35,566 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-09-07 15:05:35,571 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-09-07 15:05:35,571 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-09-07 15:05:35,575 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-09-07 15:05:35,576 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:05:35" (1/1) ...
[2019-09-07 15:05:35,580 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227848eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:35, skipping insertion in model container
[2019-09-07 15:05:35,581 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:05:35" (1/1) ...
[2019-09-07 15:05:35,589 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-09-07 15:05:35,804 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-09-07 15:05:38,146 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:05:38,158 INFO  L188         MainTranslator]: Completed pre-run
[2019-09-07 15:05:39,265 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:05:39,309 INFO  L192         MainTranslator]: Completed translation
[2019-09-07 15:05:39,309 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39 WrapperNode
[2019-09-07 15:05:39,309 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-09-07 15:05:39,310 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-09-07 15:05:39,310 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-09-07 15:05:39,310 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-09-07 15:05:39,321 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,321 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,387 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,387 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,539 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,596 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,643 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (1/1) ...
[2019-09-07 15:05:39,720 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-09-07 15:05:39,721 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-09-07 15:05:39,721 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-09-07 15:05:39,721 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-09-07 15:05:39,722 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (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 15:05:39,790 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-09-07 15:05:39,790 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-09-07 15:05:39,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-09-07 15:05:39,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-09-07 15:05:39,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-09-07 15:05:39,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-09-07 15:05:39,791 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2019-09-07 15:05:39,792 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-09-07 15:05:39,792 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-09-07 15:05:39,792 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-09-07 15:05:39,792 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-09-07 15:05:39,792 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-09-07 15:05:39,793 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2019-09-07 15:05:39,793 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-09-07 15:05:39,793 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-09-07 15:05:39,793 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-09-07 15:05:39,795 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-09-07 15:05:39,795 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-09-07 15:05:39,796 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-09-07 15:05:46,936 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-09-07 15:05:46,937 INFO  L283             CfgBuilder]: Removed 1 assume(true) statements.
[2019-09-07 15:05:46,939 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:05:46 BoogieIcfgContainer
[2019-09-07 15:05:46,939 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-09-07 15:05:46,940 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-09-07 15:05:46,940 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-09-07 15:05:46,944 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-09-07 15:05:46,944 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:05:35" (1/3) ...
[2019-09-07 15:05:46,945 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b22070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:05:46, skipping insertion in model container
[2019-09-07 15:05:46,946 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:05:39" (2/3) ...
[2019-09-07 15:05:46,947 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b22070d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:05:46, skipping insertion in model container
[2019-09-07 15:05:46,947 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:05:46" (3/3) ...
[2019-09-07 15:05:46,957 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem06_label07.c
[2019-09-07 15:05:46,971 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-09-07 15:05:46,983 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-09-07 15:05:47,001 INFO  L252      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-09-07 15:05:47,052 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2019-09-07 15:05:47,053 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2019-09-07 15:05:47,053 INFO  L378      AbstractCegarLoop]: Hoare is true
[2019-09-07 15:05:47,053 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-09-07 15:05:47,054 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-09-07 15:05:47,054 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-09-07 15:05:47,054 INFO  L382      AbstractCegarLoop]: Difference is false
[2019-09-07 15:05:47,054 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-09-07 15:05:47,054 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-09-07 15:05:47,105 INFO  L276                IsEmpty]: Start isEmpty. Operand 1315 states.
[2019-09-07 15:05:47,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 977
[2019-09-07 15:05:47,189 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:05:47,192 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:47,195 INFO  L418      AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:05:47,203 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:05:47,204 INFO  L82        PathProgramCache]: Analyzing trace with hash -1290839785, now seen corresponding path program 1 times
[2019-09-07 15:05:47,206 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:05:47,207 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:05:47,274 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:05:47,274 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:05:47,274 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:05:47,963 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:05:50,007 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 15:05:50,010 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:05:50,010 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-09-07 15:05:50,019 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-09-07 15:05:50,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-09-07 15:05:50,032 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:05:50,034 INFO  L87              Difference]: Start difference. First operand 1315 states. Second operand 3 states.
[2019-09-07 15:05:56,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:05:56,957 INFO  L93              Difference]: Finished difference Result 3733 states and 6970 transitions.
[2019-09-07 15:05:56,960 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-09-07 15:05:56,962 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 976
[2019-09-07 15:05:56,972 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:05:57,013 INFO  L225             Difference]: With dead ends: 3733
[2019-09-07 15:05:57,014 INFO  L226             Difference]: Without dead ends: 2356
[2019-09-07 15:05:57,028 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 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 15:05:57,055 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2356 states.
[2019-09-07 15:05:57,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2337.
[2019-09-07 15:05:57,185 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2337 states.
[2019-09-07 15:05:57,198 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 4140 transitions.
[2019-09-07 15:05:57,200 INFO  L78                 Accepts]: Start accepts. Automaton has 2337 states and 4140 transitions. Word has length 976
[2019-09-07 15:05:57,204 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:05:57,205 INFO  L475      AbstractCegarLoop]: Abstraction has 2337 states and 4140 transitions.
[2019-09-07 15:05:57,206 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-09-07 15:05:57,206 INFO  L276                IsEmpty]: Start isEmpty. Operand 2337 states and 4140 transitions.
[2019-09-07 15:05:57,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 985
[2019-09-07 15:05:57,250 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:05:57,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:05:57,252 INFO  L418      AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:05:57,253 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:05:57,254 INFO  L82        PathProgramCache]: Analyzing trace with hash -1143670718, now seen corresponding path program 1 times
[2019-09-07 15:05:57,254 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:05:57,254 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:05:57,255 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:05:57,256 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:05:57,256 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:05:57,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:05:58,404 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 15:05:58,404 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:05:58,405 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-09-07 15:05:58,408 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-09-07 15:05:58,408 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-09-07 15:05:58,409 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-09-07 15:05:58,409 INFO  L87              Difference]: Start difference. First operand 2337 states and 4140 transitions. Second operand 5 states.
[2019-09-07 15:06:06,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:06:06,708 INFO  L93              Difference]: Finished difference Result 5818 states and 10282 transitions.
[2019-09-07 15:06:06,709 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-09-07 15:06:06,709 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 984
[2019-09-07 15:06:06,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:06:06,728 INFO  L225             Difference]: With dead ends: 5818
[2019-09-07 15:06:06,728 INFO  L226             Difference]: Without dead ends: 3487
[2019-09-07 15:06:06,735 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 15:06:06,740 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3487 states.
[2019-09-07 15:06:06,813 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3429.
[2019-09-07 15:06:06,814 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3429 states.
[2019-09-07 15:06:06,826 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 5470 transitions.
[2019-09-07 15:06:06,826 INFO  L78                 Accepts]: Start accepts. Automaton has 3429 states and 5470 transitions. Word has length 984
[2019-09-07 15:06:06,827 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:06:06,827 INFO  L475      AbstractCegarLoop]: Abstraction has 3429 states and 5470 transitions.
[2019-09-07 15:06:06,827 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-09-07 15:06:06,827 INFO  L276                IsEmpty]: Start isEmpty. Operand 3429 states and 5470 transitions.
[2019-09-07 15:06:06,845 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 997
[2019-09-07 15:06:06,845 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:06:06,846 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:06:06,846 INFO  L418      AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:06:06,847 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:06:06,847 INFO  L82        PathProgramCache]: Analyzing trace with hash 1601783013, now seen corresponding path program 1 times
[2019-09-07 15:06:06,847 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:06:06,847 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:06:06,848 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:06:06,848 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:06:06,849 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:06:06,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:06:07,624 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 15:06:07,625 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:06:07,625 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)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:06:07,665 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:06:08,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:06:08,140 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:06:08,181 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:06:08,770 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 15:06:08,777 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:06:08,777 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-09-07 15:06:08,779 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-09-07 15:06:08,779 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-09-07 15:06:08,780 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2019-09-07 15:06:08,780 INFO  L87              Difference]: Start difference. First operand 3429 states and 5470 transitions. Second operand 12 states.
[2019-09-07 15:06:50,609 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:06:50,609 INFO  L93              Difference]: Finished difference Result 33053 states and 58363 transitions.
[2019-09-07 15:06:50,610 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2019-09-07 15:06:50,610 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 996
[2019-09-07 15:06:50,611 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:06:50,812 INFO  L225             Difference]: With dead ends: 33053
[2019-09-07 15:06:50,812 INFO  L226             Difference]: Without dead ends: 29630
[2019-09-07 15:06:50,839 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1085 GetRequests, 1034 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 891 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756
[2019-09-07 15:06:50,876 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29630 states.
[2019-09-07 15:06:51,673 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29630 to 29488.
[2019-09-07 15:06:51,673 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29488 states.
[2019-09-07 15:06:51,759 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29488 states to 29488 states and 46670 transitions.
[2019-09-07 15:06:51,759 INFO  L78                 Accepts]: Start accepts. Automaton has 29488 states and 46670 transitions. Word has length 996
[2019-09-07 15:06:51,760 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:06:51,760 INFO  L475      AbstractCegarLoop]: Abstraction has 29488 states and 46670 transitions.
[2019-09-07 15:06:51,760 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-09-07 15:06:51,760 INFO  L276                IsEmpty]: Start isEmpty. Operand 29488 states and 46670 transitions.
[2019-09-07 15:06:51,936 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 997
[2019-09-07 15:06:51,936 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:06:51,937 INFO  L399         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-09-07 15:06:51,938 INFO  L418      AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:06:51,938 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:06:51,938 INFO  L82        PathProgramCache]: Analyzing trace with hash -2072967261, now seen corresponding path program 1 times
[2019-09-07 15:06:51,939 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:06:51,939 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:06:51,940 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:06:51,940 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:06:51,940 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:06:52,029 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:06:53,130 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:06:53,131 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:06:53,131 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-09-07 15:06:53,134 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-09-07 15:06:53,134 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-09-07 15:06:53,135 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-09-07 15:06:53,135 INFO  L87              Difference]: Start difference. First operand 29488 states and 46670 transitions. Second operand 6 states.
[2019-09-07 15:07:02,505 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:07:02,505 INFO  L93              Difference]: Finished difference Result 90644 states and 168188 transitions.
[2019-09-07 15:07:02,505 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-09-07 15:07:02,506 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 996
[2019-09-07 15:07:02,506 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:07:02,937 INFO  L225             Difference]: With dead ends: 90644
[2019-09-07 15:07:02,938 INFO  L226             Difference]: Without dead ends: 61162
[2019-09-07 15:07:03,080 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:07:03,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61162 states.
[2019-09-07 15:07:04,846 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61162 to 60152.
[2019-09-07 15:07:04,847 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60152 states.
[2019-09-07 15:07:07,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60152 states to 60152 states and 105322 transitions.
[2019-09-07 15:07:07,917 INFO  L78                 Accepts]: Start accepts. Automaton has 60152 states and 105322 transitions. Word has length 996
[2019-09-07 15:07:07,918 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:07:07,918 INFO  L475      AbstractCegarLoop]: Abstraction has 60152 states and 105322 transitions.
[2019-09-07 15:07:07,918 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-09-07 15:07:07,918 INFO  L276                IsEmpty]: Start isEmpty. Operand 60152 states and 105322 transitions.
[2019-09-07 15:07:08,249 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1022
[2019-09-07 15:07:08,249 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:07:08,250 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:07:08,251 INFO  L418      AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:07:08,251 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:07:08,252 INFO  L82        PathProgramCache]: Analyzing trace with hash -196136004, now seen corresponding path program 1 times
[2019-09-07 15:07:08,253 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:07:08,253 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:07:08,255 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:07:08,255 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:07:08,255 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:07:08,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:07:09,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:07:09,516 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:07:09,517 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 15:07:09,956 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:07:10,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:07:10,487 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2329 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:07:10,512 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:07:11,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe
[2019-09-07 15:07:11,416 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:07:11,417 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9
[2019-09-07 15:07:11,419 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-09-07 15:07:11,419 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-09-07 15:07:11,420 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:07:11,420 INFO  L87              Difference]: Start difference. First operand 60152 states and 105322 transitions. Second operand 9 states.
[2019-09-07 15:07:35,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:07:35,729 INFO  L93              Difference]: Finished difference Result 301384 states and 831659 transitions.
[2019-09-07 15:07:35,729 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. 
[2019-09-07 15:07:35,729 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 1021
[2019-09-07 15:07:35,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:07:39,620 INFO  L225             Difference]: With dead ends: 301384
[2019-09-07 15:07:39,620 INFO  L226             Difference]: Without dead ends: 241238
[2019-09-07 15:07:39,958 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1072 GetRequests, 1028 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=391, Invalid=1679, Unknown=0, NotChecked=0, Total=2070
[2019-09-07 15:07:40,191 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 241238 states.
[2019-09-07 15:07:54,962 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 241238 to 237821.
[2019-09-07 15:07:54,962 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 237821 states.
[2019-09-07 15:08:02,089 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 237821 states to 237821 states and 511392 transitions.
[2019-09-07 15:08:02,091 INFO  L78                 Accepts]: Start accepts. Automaton has 237821 states and 511392 transitions. Word has length 1021
[2019-09-07 15:08:02,091 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:08:02,091 INFO  L475      AbstractCegarLoop]: Abstraction has 237821 states and 511392 transitions.
[2019-09-07 15:08:02,092 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-09-07 15:08:02,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 237821 states and 511392 transitions.
[2019-09-07 15:08:03,118 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1038
[2019-09-07 15:08:03,118 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:08:03,119 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, 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]
[2019-09-07 15:08:03,119 INFO  L418      AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:08:03,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:08:03,120 INFO  L82        PathProgramCache]: Analyzing trace with hash -1485260817, now seen corresponding path program 1 times
[2019-09-07 15:08:03,120 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:08:03,120 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:08:03,121 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:03,121 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:08:03,121 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:08:03,232 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:05,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 67 backedges. 65 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:08:05,459 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:08:05,459 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 15:08:05,483 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 15:08:06,033 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:08:06,041 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2357 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-09-07 15:08:06,060 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:08:07,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 67 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-09-07 15:08:07,402 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-09-07 15:08:07,402 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7
[2019-09-07 15:08:07,405 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-09-07 15:08:07,405 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-09-07 15:08:07,405 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2019-09-07 15:08:07,405 INFO  L87              Difference]: Start difference. First operand 237821 states and 511392 transitions. Second operand 7 states.
[2019-09-07 15:08:44,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:08:44,679 INFO  L93              Difference]: Finished difference Result 854053 states and 2181758 transitions.
[2019-09-07 15:08:44,679 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2019-09-07 15:08:44,680 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1037
[2019-09-07 15:08:44,680 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:09:00,657 INFO  L225             Difference]: With dead ends: 854053
[2019-09-07 15:09:00,657 INFO  L226             Difference]: Without dead ends: 616238
[2019-09-07 15:09:02,387 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1058 GetRequests, 1045 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2019-09-07 15:09:02,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 616238 states.
[2019-09-07 15:09:26,371 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 616238 to 613223.
[2019-09-07 15:09:26,371 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 613223 states.
[2019-09-07 15:09:45,172 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 613223 states to 613223 states and 1240657 transitions.
[2019-09-07 15:09:45,174 INFO  L78                 Accepts]: Start accepts. Automaton has 613223 states and 1240657 transitions. Word has length 1037
[2019-09-07 15:09:45,174 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:09:45,174 INFO  L475      AbstractCegarLoop]: Abstraction has 613223 states and 1240657 transitions.
[2019-09-07 15:09:45,174 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-09-07 15:09:45,174 INFO  L276                IsEmpty]: Start isEmpty. Operand 613223 states and 1240657 transitions.
[2019-09-07 15:10:00,640 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1069
[2019-09-07 15:10:00,640 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:10:00,641 INFO  L399         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-09-07 15:10:00,641 INFO  L418      AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:10:00,641 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:10:00,641 INFO  L82        PathProgramCache]: Analyzing trace with hash 1013609956, now seen corresponding path program 1 times
[2019-09-07 15:10:00,641 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:10:00,642 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:10:00,642 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:10:00,642 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:10:00,642 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:10:00,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:10:01,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 100 proven. 51 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2019-09-07 15:10:01,590 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:10:01,590 INFO  L223   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:10:01,601 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:10:02,086 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:10:02,097 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:10:02,111 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:10:02,805 INFO  L134       CoverageAnalysis]: Checked inductivity of 157 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2019-09-07 15:10:02,811 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:10:02,811 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 13
[2019-09-07 15:10:02,813 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 13 states
[2019-09-07 15:10:02,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2019-09-07 15:10:02,813 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156
[2019-09-07 15:10:02,813 INFO  L87              Difference]: Start difference. First operand 613223 states and 1240657 transitions. Second operand 13 states.