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_label33.c


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This is Ultimate 0.1.24-112bae1
[2019-09-07 15:17:49,584 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-09-07 15:17:49,587 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-09-07 15:17:49,605 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-09-07 15:17:49,605 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-09-07 15:17:49,606 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-09-07 15:17:49,607 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-09-07 15:17:49,618 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-09-07 15:17:49,619 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-09-07 15:17:49,620 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-09-07 15:17:49,622 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-09-07 15:17:49,624 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-09-07 15:17:49,625 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-09-07 15:17:49,626 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-09-07 15:17:49,626 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-09-07 15:17:49,629 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2019-09-07 15:17:49,629 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2019-09-07 15:17:49,636 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2019-09-07 15:17:49,638 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-09-07 15:17:49,639 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 15:17:49,653 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-09-07 15:17:49,653 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-09-07 15:17:49,654 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-09-07 15:17:49,655 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-09-07 15:17:49,655 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-09-07 15:17:49,655 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-09-07 15:17:49,655 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-09-07 15:17:49,655 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-09-07 15:17:49,656 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-09-07 15:17:49,656 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-09-07 15:17:49,656 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-09-07 15:17:49,656 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-09-07 15:17:49,656 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-09-07 15:17:49,657 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-09-07 15:17:49,657 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-09-07 15:17:49,657 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-09-07 15:17:49,657 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-09-07 15:17:49,657 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-09-07 15:17:49,658 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-09-07 15:17:49,658 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-09-07 15:17:49,658 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-09-07 15:17:49,658 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-09-07 15:17:49,658 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-09-07 15:17:49,659 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-09-07 15:17:49,659 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-09-07 15:17:49,659 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-09-07 15:17:49,659 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-09-07 15:17:49,659 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-09-07 15:17:49,660 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-09-07 15:17:49,688 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-09-07 15:17:49,699 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-09-07 15:17:49,703 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-09-07 15:17:49,704 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-09-07 15:17:49,705 INFO  L275        PluginConnector]: CDTParser initialized
[2019-09-07 15:17:49,706 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label33.c
[2019-09-07 15:17:49,768 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df742d8f7/6fb63cde4de34180ba8a15d7695228d2/FLAG9c665098a
[2019-09-07 15:17:50,582 INFO  L306              CDTParser]: Found 1 translation units.
[2019-09-07 15:17:50,583 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem06_label33.c
[2019-09-07 15:17:50,628 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df742d8f7/6fb63cde4de34180ba8a15d7695228d2/FLAG9c665098a
[2019-09-07 15:17:51,036 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df742d8f7/6fb63cde4de34180ba8a15d7695228d2
[2019-09-07 15:17:51,045 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-09-07 15:17:51,046 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-09-07 15:17:51,048 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-09-07 15:17:51,074 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-09-07 15:17:51,081 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-09-07 15:17:51,082 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:17:51" (1/1) ...
[2019-09-07 15:17:51,087 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5afa15e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:51, skipping insertion in model container
[2019-09-07 15:17:51,087 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 03:17:51" (1/1) ...
[2019-09-07 15:17:51,095 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-09-07 15:17:51,357 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-09-07 15:17:53,705 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:17:53,718 INFO  L188         MainTranslator]: Completed pre-run
[2019-09-07 15:17:54,909 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-09-07 15:17:54,971 INFO  L192         MainTranslator]: Completed translation
[2019-09-07 15:17:54,972 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54 WrapperNode
[2019-09-07 15:17:54,972 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-09-07 15:17:54,973 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-09-07 15:17:54,973 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-09-07 15:17:54,973 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-09-07 15:17:54,988 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:54,989 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,067 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,070 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,263 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,339 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,390 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (1/1) ...
[2019-09-07 15:17:55,476 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-09-07 15:17:55,477 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-09-07 15:17:55,477 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-09-07 15:17:55,477 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-09-07 15:17:55,479 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (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 15:17:55,566 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-09-07 15:17:55,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-09-07 15:17:55,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2019-09-07 15:17:55,567 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2019-09-07 15:17:55,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2019-09-07 15:17:55,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2019-09-07 15:17:55,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2019-09-07 15:17:55,568 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-09-07 15:17:55,569 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2019-09-07 15:17:55,569 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2019-09-07 15:17:55,569 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2019-09-07 15:17:55,570 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2019-09-07 15:17:55,571 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2019-09-07 15:17:55,571 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-09-07 15:17:55,572 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-09-07 15:17:55,572 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-09-07 15:17:55,573 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-09-07 15:17:55,574 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-09-07 15:17:55,574 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-09-07 15:18:03,970 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-09-07 15:18:03,970 INFO  L283             CfgBuilder]: Removed 1 assume(true) statements.
[2019-09-07 15:18:03,972 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:18:03 BoogieIcfgContainer
[2019-09-07 15:18:03,972 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-09-07 15:18:03,973 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-09-07 15:18:03,973 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-09-07 15:18:03,977 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-09-07 15:18:03,977 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 03:17:51" (1/3) ...
[2019-09-07 15:18:03,978 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1045b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:18:03, skipping insertion in model container
[2019-09-07 15:18:03,978 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 03:17:54" (2/3) ...
[2019-09-07 15:18:03,979 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d1045b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 03:18:03, skipping insertion in model container
[2019-09-07 15:18:03,979 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 03:18:03" (3/3) ...
[2019-09-07 15:18:03,981 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem06_label33.c
[2019-09-07 15:18:03,991 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-09-07 15:18:04,002 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-09-07 15:18:04,019 INFO  L252      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-09-07 15:18:04,074 INFO  L128   ementStrategyFactory]: Using default assertion order modulation
[2019-09-07 15:18:04,075 INFO  L377      AbstractCegarLoop]: Interprodecural is true
[2019-09-07 15:18:04,075 INFO  L378      AbstractCegarLoop]: Hoare is true
[2019-09-07 15:18:04,075 INFO  L379      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-09-07 15:18:04,075 INFO  L380      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-09-07 15:18:04,075 INFO  L381      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-09-07 15:18:04,076 INFO  L382      AbstractCegarLoop]: Difference is false
[2019-09-07 15:18:04,076 INFO  L383      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-09-07 15:18:04,076 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-09-07 15:18:04,125 INFO  L276                IsEmpty]: Start isEmpty. Operand 1315 states.
[2019-09-07 15:18:04,201 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 963
[2019-09-07 15:18:04,201 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:18:04,204 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]
[2019-09-07 15:18:04,206 INFO  L418      AbstractCegarLoop]: === Iteration 1 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:18:04,213 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:18:04,214 INFO  L82        PathProgramCache]: Analyzing trace with hash -718738689, now seen corresponding path program 1 times
[2019-09-07 15:18:04,216 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:18:04,217 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:18:04,276 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:04,277 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:18:04,277 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:04,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:18:06,744 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 15:18:06,747 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:18:06,748 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-09-07 15:18:06,755 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-09-07 15:18:06,768 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-09-07 15:18:06,769 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-09-07 15:18:06,771 INFO  L87              Difference]: Start difference. First operand 1315 states. Second operand 3 states.
[2019-09-07 15:18:14,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:18:14,195 INFO  L93              Difference]: Finished difference Result 3733 states and 6970 transitions.
[2019-09-07 15:18:14,196 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-09-07 15:18:14,197 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 962
[2019-09-07 15:18:14,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:18:14,238 INFO  L225             Difference]: With dead ends: 3733
[2019-09-07 15:18:14,239 INFO  L226             Difference]: Without dead ends: 2356
[2019-09-07 15:18:14,248 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 15:18:14,275 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2356 states.
[2019-09-07 15:18:14,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2356 to 2337.
[2019-09-07 15:18:14,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2337 states.
[2019-09-07 15:18:14,440 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 4140 transitions.
[2019-09-07 15:18:14,442 INFO  L78                 Accepts]: Start accepts. Automaton has 2337 states and 4140 transitions. Word has length 962
[2019-09-07 15:18:14,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:18:14,447 INFO  L475      AbstractCegarLoop]: Abstraction has 2337 states and 4140 transitions.
[2019-09-07 15:18:14,447 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-09-07 15:18:14,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 2337 states and 4140 transitions.
[2019-09-07 15:18:14,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 971
[2019-09-07 15:18:14,492 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:18:14,493 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]
[2019-09-07 15:18:14,493 INFO  L418      AbstractCegarLoop]: === Iteration 2 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:18:14,494 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:18:14,494 INFO  L82        PathProgramCache]: Analyzing trace with hash 338665834, now seen corresponding path program 1 times
[2019-09-07 15:18:14,494 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:18:14,495 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:18:14,496 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:14,496 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:18:14,496 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:14,595 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:18:15,673 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 15:18:15,673 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:18:15,674 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-09-07 15:18:15,678 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-09-07 15:18:15,679 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-09-07 15:18:15,680 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-09-07 15:18:15,680 INFO  L87              Difference]: Start difference. First operand 2337 states and 4140 transitions. Second operand 5 states.
[2019-09-07 15:18:24,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:18:24,319 INFO  L93              Difference]: Finished difference Result 5818 states and 10282 transitions.
[2019-09-07 15:18:24,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-09-07 15:18:24,321 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 970
[2019-09-07 15:18:24,321 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:18:24,358 INFO  L225             Difference]: With dead ends: 5818
[2019-09-07 15:18:24,359 INFO  L226             Difference]: Without dead ends: 3487
[2019-09-07 15:18:24,371 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 15:18:24,379 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3487 states.
[2019-09-07 15:18:24,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3487 to 3429.
[2019-09-07 15:18:24,501 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3429 states.
[2019-09-07 15:18:24,523 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3429 states to 3429 states and 5470 transitions.
[2019-09-07 15:18:24,523 INFO  L78                 Accepts]: Start accepts. Automaton has 3429 states and 5470 transitions. Word has length 970
[2019-09-07 15:18:24,524 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:18:24,524 INFO  L475      AbstractCegarLoop]: Abstraction has 3429 states and 5470 transitions.
[2019-09-07 15:18:24,524 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-09-07 15:18:24,525 INFO  L276                IsEmpty]: Start isEmpty. Operand 3429 states and 5470 transitions.
[2019-09-07 15:18:24,557 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 983
[2019-09-07 15:18:24,558 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:18:24,560 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]
[2019-09-07 15:18:24,561 INFO  L418      AbstractCegarLoop]: === Iteration 3 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:18:24,561 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:18:24,562 INFO  L82        PathProgramCache]: Analyzing trace with hash -40011955, now seen corresponding path program 1 times
[2019-09-07 15:18:24,563 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:18:24,564 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:18:24,565 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:24,566 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:18:24,566 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:18:24,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:18:26,122 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 15:18:26,122 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:18:26,122 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 15:18:26,148 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:18:26,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:18:26,741 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2313 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:18:26,782 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:18:27,451 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 15:18:27,458 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:18:27,459 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12
[2019-09-07 15:18:27,465 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-09-07 15:18:27,466 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-09-07 15:18:27,466 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132
[2019-09-07 15:18:27,469 INFO  L87              Difference]: Start difference. First operand 3429 states and 5470 transitions. Second operand 12 states.
[2019-09-07 15:19:12,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:19:12,771 INFO  L93              Difference]: Finished difference Result 33055 states and 58364 transitions.
[2019-09-07 15:19:12,774 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2019-09-07 15:19:12,774 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 982
[2019-09-07 15:19:12,775 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:19:12,984 INFO  L225             Difference]: With dead ends: 33055
[2019-09-07 15:19:12,984 INFO  L226             Difference]: Without dead ends: 29632
[2019-09-07 15:19:13,015 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=545, Invalid=2211, Unknown=0, NotChecked=0, Total=2756
[2019-09-07 15:19:13,057 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29632 states.
[2019-09-07 15:19:14,068 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29632 to 29488.
[2019-09-07 15:19:14,068 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 29488 states.
[2019-09-07 15:19:14,174 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 29488 states to 29488 states and 46673 transitions.
[2019-09-07 15:19:14,175 INFO  L78                 Accepts]: Start accepts. Automaton has 29488 states and 46673 transitions. Word has length 982
[2019-09-07 15:19:14,175 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:19:14,175 INFO  L475      AbstractCegarLoop]: Abstraction has 29488 states and 46673 transitions.
[2019-09-07 15:19:14,176 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-09-07 15:19:14,176 INFO  L276                IsEmpty]: Start isEmpty. Operand 29488 states and 46673 transitions.
[2019-09-07 15:19:14,350 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 983
[2019-09-07 15:19:14,350 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:19:14,351 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]
[2019-09-07 15:19:14,351 INFO  L418      AbstractCegarLoop]: === Iteration 4 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:19:14,352 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:19:14,352 INFO  L82        PathProgramCache]: Analyzing trace with hash 1442430603, now seen corresponding path program 1 times
[2019-09-07 15:19:14,352 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:19:14,352 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:19:14,353 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:19:14,354 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:19:14,354 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:19:14,446 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:19:15,369 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 15:19:15,370 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:19:15,370 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-09-07 15:19:15,372 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-09-07 15:19:15,372 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-09-07 15:19:15,373 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2019-09-07 15:19:15,373 INFO  L87              Difference]: Start difference. First operand 29488 states and 46673 transitions. Second operand 6 states.
[2019-09-07 15:19:26,568 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:19:26,568 INFO  L93              Difference]: Finished difference Result 90644 states and 168197 transitions.
[2019-09-07 15:19:26,569 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-09-07 15:19:26,569 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 982
[2019-09-07 15:19:26,569 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:19:27,172 INFO  L225             Difference]: With dead ends: 90644
[2019-09-07 15:19:27,172 INFO  L226             Difference]: Without dead ends: 61162
[2019-09-07 15:19:27,289 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 15:19:27,357 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61162 states.
[2019-09-07 15:19:29,139 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61162 to 60152.
[2019-09-07 15:19:29,142 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60152 states.
[2019-09-07 15:19:29,349 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60152 states to 60152 states and 105332 transitions.
[2019-09-07 15:19:29,350 INFO  L78                 Accepts]: Start accepts. Automaton has 60152 states and 105332 transitions. Word has length 982
[2019-09-07 15:19:29,350 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:19:29,350 INFO  L475      AbstractCegarLoop]: Abstraction has 60152 states and 105332 transitions.
[2019-09-07 15:19:29,350 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-09-07 15:19:29,350 INFO  L276                IsEmpty]: Start isEmpty. Operand 60152 states and 105332 transitions.
[2019-09-07 15:19:29,635 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 985
[2019-09-07 15:19:29,635 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:19:29,636 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-09-07 15:19:29,636 INFO  L418      AbstractCegarLoop]: === Iteration 5 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:19:29,636 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:19:29,637 INFO  L82        PathProgramCache]: Analyzing trace with hash -960060471, now seen corresponding path program 1 times
[2019-09-07 15:19:29,637 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:19:29,637 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:19:29,638 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:19:29,638 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:19:29,639 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:19:29,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:19:32,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:19:32,121 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:19:32,122 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)
[2019-09-07 15:19:32,152 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:19:32,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:19:32,766 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2305 conjuncts, 4 conjunts are in the unsatisfiable core
[2019-09-07 15:19:32,787 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:19:33,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 26 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:19:33,650 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-09-07 15:19:33,651 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9
[2019-09-07 15:19:33,653 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-09-07 15:19:33,653 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-09-07 15:19:33,653 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2019-09-07 15:19:33,654 INFO  L87              Difference]: Start difference. First operand 60152 states and 105332 transitions. Second operand 9 states.
[2019-09-07 15:19:53,541 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:19:53,542 INFO  L93              Difference]: Finished difference Result 183437 states and 431167 transitions.
[2019-09-07 15:19:53,542 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-09-07 15:19:53,542 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 984
[2019-09-07 15:19:53,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:19:54,741 INFO  L225             Difference]: With dead ends: 183437
[2019-09-07 15:19:54,741 INFO  L226             Difference]: Without dead ends: 123291
[2019-09-07 15:19:54,992 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 999 GetRequests, 986 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2019-09-07 15:19:55,119 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 123291 states.
[2019-09-07 15:20:02,403 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 123291 to 122363.
[2019-09-07 15:20:02,403 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 122363 states.
[2019-09-07 15:20:07,572 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 122363 states to 122363 states and 275308 transitions.
[2019-09-07 15:20:07,573 INFO  L78                 Accepts]: Start accepts. Automaton has 122363 states and 275308 transitions. Word has length 984
[2019-09-07 15:20:07,574 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:20:07,574 INFO  L475      AbstractCegarLoop]: Abstraction has 122363 states and 275308 transitions.
[2019-09-07 15:20:07,574 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-09-07 15:20:07,574 INFO  L276                IsEmpty]: Start isEmpty. Operand 122363 states and 275308 transitions.
[2019-09-07 15:20:08,316 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 990
[2019-09-07 15:20:08,316 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:20:08,317 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, 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]
[2019-09-07 15:20:08,317 INFO  L418      AbstractCegarLoop]: === Iteration 6 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:20:08,317 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:20:08,318 INFO  L82        PathProgramCache]: Analyzing trace with hash -1499729740, now seen corresponding path program 1 times
[2019-09-07 15:20:08,318 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:20:08,318 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:20:08,319 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:20:08,319 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:20:08,319 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:20:08,538 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:20:11,036 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:20:11,036 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-09-07 15:20:11,037 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-09-07 15:20:11,038 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-09-07 15:20:11,038 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-09-07 15:20:11,039 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-09-07 15:20:11,039 INFO  L87              Difference]: Start difference. First operand 122363 states and 275308 transitions. Second operand 4 states.
[2019-09-07 15:20:37,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-09-07 15:20:37,392 INFO  L93              Difference]: Finished difference Result 457913 states and 1250283 transitions.
[2019-09-07 15:20:37,393 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-09-07 15:20:37,393 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 989
[2019-09-07 15:20:37,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-09-07 15:20:40,690 INFO  L225             Difference]: With dead ends: 457913
[2019-09-07 15:20:40,690 INFO  L226             Difference]: Without dead ends: 335556
[2019-09-07 15:20:41,216 INFO  L628         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-09-07 15:20:41,519 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 335556 states.
[2019-09-07 15:21:05,878 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 335556 to 334992.
[2019-09-07 15:21:05,878 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 334992 states.
[2019-09-07 15:21:10,070 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 334992 states to 334992 states and 879856 transitions.
[2019-09-07 15:21:10,072 INFO  L78                 Accepts]: Start accepts. Automaton has 334992 states and 879856 transitions. Word has length 989
[2019-09-07 15:21:10,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-09-07 15:21:10,072 INFO  L475      AbstractCegarLoop]: Abstraction has 334992 states and 879856 transitions.
[2019-09-07 15:21:10,073 INFO  L476      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-09-07 15:21:10,073 INFO  L276                IsEmpty]: Start isEmpty. Operand 334992 states and 879856 transitions.
[2019-09-07 15:21:12,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1006
[2019-09-07 15:21:12,469 INFO  L391         BasicCegarLoop]: Found error trace
[2019-09-07 15:21:12,469 INFO  L399         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:21:12,469 INFO  L418      AbstractCegarLoop]: === Iteration 7 === [calculate_output5Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-09-07 15:21:12,470 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-09-07 15:21:12,470 INFO  L82        PathProgramCache]: Analyzing trace with hash 1481541135, now seen corresponding path program 1 times
[2019-09-07 15:21:12,470 INFO  L223   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-09-07 15:21:12,470 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2019-09-07 15:21:12,471 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:21:12,471 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:21:12,471 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-09-07 15:21:12,675 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:21:16,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-09-07 15:21:16,174 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2019-09-07 15:21:16,175 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)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-09-07 15:21:16,186 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-09-07 15:21:17,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-09-07 15:21:17,448 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2314 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-09-07 15:21:17,463 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-09-07 15:21:25,369 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2019-09-07 15:21:25,375 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2019-09-07 15:21:25,376 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 8
[2019-09-07 15:21:25,377 INFO  L454      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-09-07 15:21:25,377 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-09-07 15:21:25,378 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2019-09-07 15:21:25,378 INFO  L87              Difference]: Start difference. First operand 334992 states and 879856 transitions. Second operand 8 states.