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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 23:04:08,928 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 23:04:08,932 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 23:04:08,952 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 23:04:08,952 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 23:04:08,954 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 23:04:08,956 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 23:04:08,969 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 23:04:08,971 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 23:04:08,972 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 23:04:08,974 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 23:04:08,975 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 23:04:08,976 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 23:04:08,978 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 23:04:08,980 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 23:04:08,981 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 23:04:08,983 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 23:04:08,986 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 23:04:08,989 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 23:04:08,993 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 23:04:08,997 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 23:04:08,998 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 23:04:08,999 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 23:04:09,000 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 23:04:09,002 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 23:04:09,002 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 23:04:09,003 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 23:04:09,003 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 23:04:09,004 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 23:04:09,005 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 23:04:09,005 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 23:04:09,006 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 23:04:09,008 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 23:04:09,009 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 23:04:09,010 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 23:04:09,011 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 23:04:09,012 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 23:04:09,012 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 23:04:09,012 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 23:04:09,013 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 23:04:09,015 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 23:04:09,016 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
[2019-10-13 23:04:09,037 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 23:04:09,037 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 23:04:09,039 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 23:04:09,039 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 23:04:09,040 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 23:04:09,040 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 23:04:09,040 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 23:04:09,040 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 23:04:09,040 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 23:04:09,041 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 23:04:09,042 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 23:04:09,042 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 23:04:09,042 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 23:04:09,043 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 23:04:09,043 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 23:04:09,043 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 23:04:09,043 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 23:04:09,043 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 23:04:09,044 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 23:04:09,044 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 23:04:09,044 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 23:04:09,044 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 23:04:09,045 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 23:04:09,045 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 23:04:09,045 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 23:04:09,045 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 23:04:09,045 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 23:04:09,045 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 23:04:09,046 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK
[2019-10-13 23:04:09,325 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 23:04:09,338 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 23:04:09,345 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 23:04:09,346 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 23:04:09,347 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 23:04:09,348 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c
[2019-10-13 23:04:09,425 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411065a5a/51517c448db940c79cbebbd93f4c2848/FLAGa914c3aae
[2019-10-13 23:04:10,096 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 23:04:10,097 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product24.cil.c
[2019-10-13 23:04:10,142 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411065a5a/51517c448db940c79cbebbd93f4c2848/FLAGa914c3aae
[2019-10-13 23:04:10,291 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/411065a5a/51517c448db940c79cbebbd93f4c2848
[2019-10-13 23:04:10,301 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 23:04:10,303 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 23:04:10,303 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 23:04:10,304 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 23:04:10,307 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 23:04:10,308 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:10" (1/1) ...
[2019-10-13 23:04:10,311 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54803c16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:10, skipping insertion in model container
[2019-10-13 23:04:10,311 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:04:10" (1/1) ...
[2019-10-13 23:04:10,319 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 23:04:10,400 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 23:04:11,168 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:04:11,186 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 23:04:11,347 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:04:11,421 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 23:04:11,422 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11 WrapperNode
[2019-10-13 23:04:11,422 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 23:04:11,423 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 23:04:11,423 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 23:04:11,423 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 23:04:11,437 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,437 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,474 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,474 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,579 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,630 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,654 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (1/1) ...
[2019-10-13 23:04:11,679 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 23:04:11,680 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 23:04:11,680 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 23:04:11,680 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 23:04:11,682 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (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
[2019-10-13 23:04:11,754 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 23:04:11,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 23:04:11,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:04:11,755 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-13 23:04:11,756 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-13 23:04:11,757 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-13 23:04:11,757 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-13 23:04:11,757 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-13 23:04:11,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-13 23:04:11,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-13 23:04:11,758 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-13 23:04:11,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-13 23:04:11,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-13 23:04:11,759 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-13 23:04:11,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-13 23:04:11,760 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-13 23:04:11,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-13 23:04:11,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-13 23:04:11,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-13 23:04:11,762 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-13 23:04:11,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-13 23:04:11,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-13 23:04:11,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-13 23:04:11,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-13 23:04:11,763 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-13 23:04:11,764 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-13 23:04:11,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-13 23:04:11,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-13 23:04:11,765 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull
[2019-10-13 23:04:11,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:04:11,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-13 23:04:11,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-13 23:04:11,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor
[2019-10-13 23:04:11,766 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloor
[2019-10-13 23:04:11,767 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-13 23:04:11,768 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-13 23:04:11,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-13 23:04:11,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-13 23:04:11,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-13 23:04:11,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-13 23:04:11,769 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-13 23:04:11,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-13 23:04:11,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-13 23:04:11,770 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-13 23:04:11,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-13 23:04:11,771 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-13 23:04:11,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-13 23:04:11,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-13 23:04:11,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-13 23:04:11,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 23:04:11,772 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-13 23:04:11,773 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-13 23:04:11,774 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-13 23:04:11,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-13 23:04:11,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-13 23:04:11,775 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-13 23:04:11,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-13 23:04:11,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-13 23:04:11,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:04:11,776 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-13 23:04:11,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-13 23:04:11,777 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-13 23:04:11,777 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 23:04:11,778 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 23:04:11,778 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-13 23:04:11,778 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-13 23:04:11,779 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-13 23:04:11,780 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-13 23:04:11,781 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloor
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2
[2019-10-13 23:04:11,782 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-13 23:04:11,783 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-13 23:04:11,783 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-13 23:04:11,783 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-13 23:04:11,783 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight
[2019-10-13 23:04:11,784 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull
[2019-10-13 23:04:11,784 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-13 23:04:11,784 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-13 23:04:11,784 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-13 23:04:11,784 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull
[2019-10-13 23:04:11,785 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:04:11,786 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-13 23:04:11,786 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-13 23:04:11,786 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor
[2019-10-13 23:04:11,786 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3
[2019-10-13 23:04:11,787 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor
[2019-10-13 23:04:11,787 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 23:04:11,787 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-13 23:04:11,790 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-13 23:04:11,791 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1
[2019-10-13 23:04:11,791 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-13 23:04:11,795 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-13 23:04:11,796 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-13 23:04:11,797 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-13 23:04:11,797 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-13 23:04:11,797 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-13 23:04:11,797 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-13 23:04:11,798 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-13 23:04:11,798 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-13 23:04:11,800 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-13 23:04:11,801 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 23:04:11,802 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-13 23:04:11,803 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-13 23:04:11,803 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-13 23:04:11,803 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 23:04:11,803 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-13 23:04:11,803 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 23:04:17,222 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 23:04:17,222 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-13 23:04:17,224 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:17 BoogieIcfgContainer
[2019-10-13 23:04:17,224 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 23:04:17,226 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 23:04:17,226 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 23:04:17,229 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 23:04:17,229 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:04:10" (1/3) ...
[2019-10-13 23:04:17,230 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632868fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:17, skipping insertion in model container
[2019-10-13 23:04:17,231 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:04:11" (2/3) ...
[2019-10-13 23:04:17,231 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@632868fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:04:17, skipping insertion in model container
[2019-10-13 23:04:17,231 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:04:17" (3/3) ...
[2019-10-13 23:04:17,235 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec2_product24.cil.c
[2019-10-13 23:04:17,246 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 23:04:17,257 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 23:04:17,269 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 23:04:17,309 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 23:04:17,310 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 23:04:17,310 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 23:04:17,310 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 23:04:17,310 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 23:04:17,310 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 23:04:17,310 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 23:04:17,310 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 23:04:17,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 609 states.
[2019-10-13 23:04:17,358 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2019-10-13 23:04:17,358 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:17,359 INFO  L380         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]
[2019-10-13 23:04:17,361 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:17,365 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:17,365 INFO  L82        PathProgramCache]: Analyzing trace with hash 1997168965, now seen corresponding path program 1 times
[2019-10-13 23:04:17,374 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:17,374 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450936367]
[2019-10-13 23:04:17,374 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:17,375 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:17,375 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:17,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:18,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:18,006 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450936367]
[2019-10-13 23:04:18,008 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:18,008 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-13 23:04:18,009 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414387199]
[2019-10-13 23:04:18,016 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 23:04:18,017 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:18,033 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 23:04:18,034 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 23:04:18,036 INFO  L87              Difference]: Start difference. First operand 609 states. Second operand 2 states.
[2019-10-13 23:04:18,157 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:18,157 INFO  L93              Difference]: Finished difference Result 506 states and 748 transitions.
[2019-10-13 23:04:18,158 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-10-13 23:04:18,159 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 74
[2019-10-13 23:04:18,160 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:18,195 INFO  L225             Difference]: With dead ends: 506
[2019-10-13 23:04:18,195 INFO  L226             Difference]: Without dead ends: 472
[2019-10-13 23:04:18,202 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 23:04:18,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 472 states.
[2019-10-13 23:04:18,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 472.
[2019-10-13 23:04:18,342 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 472 states.
[2019-10-13 23:04:18,351 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 697 transitions.
[2019-10-13 23:04:18,354 INFO  L78                 Accepts]: Start accepts. Automaton has 472 states and 697 transitions. Word has length 74
[2019-10-13 23:04:18,357 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:18,358 INFO  L462      AbstractCegarLoop]: Abstraction has 472 states and 697 transitions.
[2019-10-13 23:04:18,358 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 23:04:18,358 INFO  L276                IsEmpty]: Start isEmpty. Operand 472 states and 697 transitions.
[2019-10-13 23:04:18,373 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2019-10-13 23:04:18,373 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:18,374 INFO  L380         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]
[2019-10-13 23:04:18,374 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:18,375 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:18,375 INFO  L82        PathProgramCache]: Analyzing trace with hash -1180328150, now seen corresponding path program 1 times
[2019-10-13 23:04:18,376 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:18,376 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222021844]
[2019-10-13 23:04:18,376 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:18,377 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:18,377 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:18,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:18,818 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:18,819 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222021844]
[2019-10-13 23:04:18,819 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:18,819 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-10-13 23:04:18,819 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072483689]
[2019-10-13 23:04:18,821 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 23:04:18,822 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:18,822 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 23:04:18,822 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-10-13 23:04:18,823 INFO  L87              Difference]: Start difference. First operand 472 states and 697 transitions. Second operand 9 states.
[2019-10-13 23:04:24,923 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:24,923 INFO  L93              Difference]: Finished difference Result 1299 states and 1959 transitions.
[2019-10-13 23:04:24,924 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2019-10-13 23:04:24,924 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 75
[2019-10-13 23:04:24,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:24,932 INFO  L225             Difference]: With dead ends: 1299
[2019-10-13 23:04:24,932 INFO  L226             Difference]: Without dead ends: 869
[2019-10-13 23:04:24,961 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462
[2019-10-13 23:04:24,966 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 869 states.
[2019-10-13 23:04:25,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 838.
[2019-10-13 23:04:25,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 838 states.
[2019-10-13 23:04:25,057 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 838 states to 838 states and 1223 transitions.
[2019-10-13 23:04:25,059 INFO  L78                 Accepts]: Start accepts. Automaton has 838 states and 1223 transitions. Word has length 75
[2019-10-13 23:04:25,062 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:25,062 INFO  L462      AbstractCegarLoop]: Abstraction has 838 states and 1223 transitions.
[2019-10-13 23:04:25,062 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 23:04:25,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 838 states and 1223 transitions.
[2019-10-13 23:04:25,064 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2019-10-13 23:04:25,064 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:25,065 INFO  L380         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]
[2019-10-13 23:04:25,065 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:25,065 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:25,065 INFO  L82        PathProgramCache]: Analyzing trace with hash -2133961468, now seen corresponding path program 1 times
[2019-10-13 23:04:25,066 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:25,066 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171934355]
[2019-10-13 23:04:25,066 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:25,066 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:25,066 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:25,192 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:25,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:25,360 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171934355]
[2019-10-13 23:04:25,360 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:25,360 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 23:04:25,360 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832868814]
[2019-10-13 23:04:25,361 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 23:04:25,361 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:25,361 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 23:04:25,361 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:04:25,362 INFO  L87              Difference]: Start difference. First operand 838 states and 1223 transitions. Second operand 5 states.
[2019-10-13 23:04:27,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:27,248 INFO  L93              Difference]: Finished difference Result 2500 states and 3738 transitions.
[2019-10-13 23:04:27,248 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:04:27,249 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 76
[2019-10-13 23:04:27,249 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:27,263 INFO  L225             Difference]: With dead ends: 2500
[2019-10-13 23:04:27,263 INFO  L226             Difference]: Without dead ends: 1705
[2019-10-13 23:04:27,270 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2019-10-13 23:04:27,273 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1705 states.
[2019-10-13 23:04:27,377 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1705 to 1609.
[2019-10-13 23:04:27,377 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1609 states.
[2019-10-13 23:04:27,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1609 states to 1609 states and 2393 transitions.
[2019-10-13 23:04:27,401 INFO  L78                 Accepts]: Start accepts. Automaton has 1609 states and 2393 transitions. Word has length 76
[2019-10-13 23:04:27,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:27,402 INFO  L462      AbstractCegarLoop]: Abstraction has 1609 states and 2393 transitions.
[2019-10-13 23:04:27,402 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 23:04:27,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 1609 states and 2393 transitions.
[2019-10-13 23:04:27,405 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2019-10-13 23:04:27,405 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:27,406 INFO  L380         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]
[2019-10-13 23:04:27,406 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:27,407 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:27,407 INFO  L82        PathProgramCache]: Analyzing trace with hash -1730138264, now seen corresponding path program 1 times
[2019-10-13 23:04:27,408 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:27,408 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072863844]
[2019-10-13 23:04:27,408 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:27,409 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:27,409 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:27,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:27,682 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:27,682 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072863844]
[2019-10-13 23:04:27,683 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:27,683 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 23:04:27,683 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584881658]
[2019-10-13 23:04:27,683 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 23:04:27,684 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:27,684 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 23:04:27,684 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 23:04:27,684 INFO  L87              Difference]: Start difference. First operand 1609 states and 2393 transitions. Second operand 4 states.
[2019-10-13 23:04:29,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:29,546 INFO  L93              Difference]: Finished difference Result 4746 states and 7163 transitions.
[2019-10-13 23:04:29,547 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:04:29,547 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 77
[2019-10-13 23:04:29,547 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:29,572 INFO  L225             Difference]: With dead ends: 4746
[2019-10-13 23:04:29,573 INFO  L226             Difference]: Without dead ends: 3181
[2019-10-13 23:04:29,582 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:04:29,587 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3181 states.
[2019-10-13 23:04:29,726 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3181 to 3064.
[2019-10-13 23:04:29,726 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3064 states.
[2019-10-13 23:04:29,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3064 states to 3064 states and 4600 transitions.
[2019-10-13 23:04:29,748 INFO  L78                 Accepts]: Start accepts. Automaton has 3064 states and 4600 transitions. Word has length 77
[2019-10-13 23:04:29,748 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:29,749 INFO  L462      AbstractCegarLoop]: Abstraction has 3064 states and 4600 transitions.
[2019-10-13 23:04:29,749 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 23:04:29,749 INFO  L276                IsEmpty]: Start isEmpty. Operand 3064 states and 4600 transitions.
[2019-10-13 23:04:29,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2019-10-13 23:04:29,750 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:29,751 INFO  L380         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]
[2019-10-13 23:04:29,751 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:29,751 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:29,751 INFO  L82        PathProgramCache]: Analyzing trace with hash -2096516922, now seen corresponding path program 1 times
[2019-10-13 23:04:29,752 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:29,752 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020513157]
[2019-10-13 23:04:29,752 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:29,752 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:29,753 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:29,809 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:29,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:29,892 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020513157]
[2019-10-13 23:04:29,892 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:29,892 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 23:04:29,892 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043233889]
[2019-10-13 23:04:29,893 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 23:04:29,893 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:29,893 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 23:04:29,894 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 23:04:29,894 INFO  L87              Difference]: Start difference. First operand 3064 states and 4600 transitions. Second operand 4 states.
[2019-10-13 23:04:32,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:32,196 INFO  L93              Difference]: Finished difference Result 9156 states and 13950 transitions.
[2019-10-13 23:04:32,197 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:04:32,197 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 78
[2019-10-13 23:04:32,198 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:32,251 INFO  L225             Difference]: With dead ends: 9156
[2019-10-13 23:04:32,252 INFO  L226             Difference]: Without dead ends: 6137
[2019-10-13 23:04:32,274 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:04:32,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6137 states.
[2019-10-13 23:04:32,640 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6137 to 5975.
[2019-10-13 23:04:32,640 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5975 states.
[2019-10-13 23:04:32,675 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5975 states to 5975 states and 9052 transitions.
[2019-10-13 23:04:32,676 INFO  L78                 Accepts]: Start accepts. Automaton has 5975 states and 9052 transitions. Word has length 78
[2019-10-13 23:04:32,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:32,677 INFO  L462      AbstractCegarLoop]: Abstraction has 5975 states and 9052 transitions.
[2019-10-13 23:04:32,677 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 23:04:32,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 5975 states and 9052 transitions.
[2019-10-13 23:04:32,683 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2019-10-13 23:04:32,686 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:32,686 INFO  L380         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]
[2019-10-13 23:04:32,687 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:32,687 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:32,687 INFO  L82        PathProgramCache]: Analyzing trace with hash -569349526, now seen corresponding path program 1 times
[2019-10-13 23:04:32,687 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:32,688 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491714826]
[2019-10-13 23:04:32,688 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:32,688 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:32,688 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:32,771 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:32,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:32,880 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491714826]
[2019-10-13 23:04:32,882 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:32,882 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 23:04:32,882 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766985702]
[2019-10-13 23:04:32,883 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 23:04:32,883 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:32,883 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 23:04:32,883 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 23:04:32,883 INFO  L87              Difference]: Start difference. First operand 5975 states and 9052 transitions. Second operand 4 states.
[2019-10-13 23:04:35,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:35,169 INFO  L93              Difference]: Finished difference Result 17991 states and 27791 transitions.
[2019-10-13 23:04:35,170 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:04:35,170 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 79
[2019-10-13 23:04:35,171 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:35,322 INFO  L225             Difference]: With dead ends: 17991
[2019-10-13 23:04:35,322 INFO  L226             Difference]: Without dead ends: 12061
[2019-10-13 23:04:35,372 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:04:35,391 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12061 states.
[2019-10-13 23:04:36,183 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12061 to 11810.
[2019-10-13 23:04:36,183 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11810 states.
[2019-10-13 23:04:36,243 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11810 states to 11810 states and 18114 transitions.
[2019-10-13 23:04:36,245 INFO  L78                 Accepts]: Start accepts. Automaton has 11810 states and 18114 transitions. Word has length 79
[2019-10-13 23:04:36,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:04:36,246 INFO  L462      AbstractCegarLoop]: Abstraction has 11810 states and 18114 transitions.
[2019-10-13 23:04:36,246 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-13 23:04:36,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 11810 states and 18114 transitions.
[2019-10-13 23:04:36,248 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2019-10-13 23:04:36,248 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:04:36,248 INFO  L380         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]
[2019-10-13 23:04:36,249 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:04:36,249 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:04:36,249 INFO  L82        PathProgramCache]: Analyzing trace with hash -471796600, now seen corresponding path program 1 times
[2019-10-13 23:04:36,249 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:04:36,250 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029006226]
[2019-10-13 23:04:36,250 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:36,250 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:04:36,250 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:04:36,304 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:04:36,389 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:04:36,390 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029006226]
[2019-10-13 23:04:36,390 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:04:36,390 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-13 23:04:36,391 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108371451]
[2019-10-13 23:04:36,391 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-13 23:04:36,391 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:04:36,392 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-13 23:04:36,392 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-13 23:04:36,392 INFO  L87              Difference]: Start difference. First operand 11810 states and 18114 transitions. Second operand 4 states.
[2019-10-13 23:04:40,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:04:40,407 INFO  L93              Difference]: Finished difference Result 35714 states and 56419 transitions.
[2019-10-13 23:04:40,408 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:04:40,408 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 80
[2019-10-13 23:04:40,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:04:40,635 INFO  L225             Difference]: With dead ends: 35714
[2019-10-13 23:04:40,635 INFO  L226             Difference]: Without dead ends: 23937
[2019-10-13 23:04:40,725 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:04:40,766 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23937 states.