/usr/bin/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_product28.cil.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-07 04:10:48,010 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-07 04:10:48,013 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-07 04:10:48,033 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-07 04:10:48,033 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-07 04:10:48,035 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-07 04:10:48,037 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-07 04:10:48,050 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-07 04:10:48,052 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-07 04:10:48,053 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-07 04:10:48,055 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-07 04:10:48,057 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-07 04:10:48,057 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-07 04:10:48,060 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-07 04:10:48,063 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-07 04:10:48,065 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-07 04:10:48,067 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-07 04:10:48,071 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-07 04:10:48,072 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-07 04:10:48,079 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-07 04:10:48,083 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-07 04:10:48,085 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-07 04:10:48,088 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-07 04:10:48,089 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-07 04:10:48,092 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-07 04:10:48,092 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-07 04:10:48,092 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-07 04:10:48,094 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-07 04:10:48,094 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-07 04:10:48,097 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-07 04:10:48,098 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-07 04:10:48,099 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-07 04:10:48,099 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-07 04:10:48,100 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-07 04:10:48,102 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-07 04:10:48,102 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-07 04:10:48,103 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-07 04:10:48,103 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-07 04:10:48,103 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-07 04:10:48,104 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-07 04:10:48,105 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-07 04:10:48,106 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
[2019-11-07 04:10:48,124 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-07 04:10:48,125 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-07 04:10:48,126 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-07 04:10:48,126 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-07 04:10:48,126 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-07 04:10:48,127 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-07 04:10:48,127 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-07 04:10:48,127 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-07 04:10:48,127 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-07 04:10:48,127 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-07 04:10:48,128 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-07 04:10:48,128 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-07 04:10:48,128 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-07 04:10:48,128 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-07 04:10:48,128 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-07 04:10:48,129 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-07 04:10:48,129 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-07 04:10:48,129 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-07 04:10:48,129 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-07 04:10:48,129 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-07 04:10:48,130 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-07 04:10:48,130 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-07 04:10:48,130 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-07 04:10:48,130 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-07 04:10:48,130 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-07 04:10:48,131 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-07 04:10:48,131 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-07 04:10:48,131 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-07 04:10:48,131 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
[2019-11-07 04:10:48,422 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-07 04:10:48,438 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-07 04:10:48,442 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-07 04:10:48,443 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-07 04:10:48,444 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-07 04:10:48,445 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c
[2019-11-07 04:10:48,521 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74435fc2f/c9f2f10f1fe74ddca6b3ddb95c24b153/FLAG29a5b8843
[2019-11-07 04:10:49,201 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-07 04:10:49,203 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product28.cil.c
[2019-11-07 04:10:49,227 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74435fc2f/c9f2f10f1fe74ddca6b3ddb95c24b153/FLAG29a5b8843
[2019-11-07 04:10:49,397 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74435fc2f/c9f2f10f1fe74ddca6b3ddb95c24b153
[2019-11-07 04:10:49,407 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-07 04:10:49,409 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-07 04:10:49,411 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-07 04:10:49,411 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-07 04:10:49,415 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-07 04:10:49,416 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:49" (1/1) ...
[2019-11-07 04:10:49,419 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44264cde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:49, skipping insertion in model container
[2019-11-07 04:10:49,419 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:10:49" (1/1) ...
[2019-11-07 04:10:49,429 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-07 04:10:49,520 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-07 04:10:50,319 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-07 04:10:50,340 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-07 04:10:50,482 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-07 04:10:50,571 INFO  L192         MainTranslator]: Completed translation
[2019-11-07 04:10:50,572 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50 WrapperNode
[2019-11-07 04:10:50,572 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-07 04:10:50,573 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-07 04:10:50,573 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-07 04:10:50,573 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-07 04:10:50,587 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,588 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,624 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,625 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,692 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,726 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,752 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (1/1) ...
[2019-11-07 04:10:50,787 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-07 04:10:50,788 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-07 04:10:50,788 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-07 04:10:50,788 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-07 04:10:50,794 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (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
[2019-11-07 04:10:50,875 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-07 04:10:50,876 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-07 04:10:50,876 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-11-07 04:10:50,876 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-11-07 04:10:50,877 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-11-07 04:10:50,878 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-11-07 04:10:50,879 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-11-07 04:10:50,879 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-11-07 04:10:50,879 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-11-07 04:10:50,880 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2019-11-07 04:10:50,880 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-11-07 04:10:50,881 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-11-07 04:10:50,881 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-11-07 04:10:50,881 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-11-07 04:10:50,882 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-11-07 04:10:50,882 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-11-07 04:10:50,884 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-11-07 04:10:50,885 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-11-07 04:10:50,885 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-11-07 04:10:50,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-11-07 04:10:50,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty
[2019-11-07 04:10:50,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-11-07 04:10:50,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-11-07 04:10:50,886 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-11-07 04:10:50,887 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-11-07 04:10:50,887 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-11-07 04:10:50,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-11-07 04:10:50,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-11-07 04:10:50,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor
[2019-11-07 04:10:50,888 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-11-07 04:10:50,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor
[2019-11-07 04:10:50,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-11-07 04:10:50,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-11-07 04:10:50,889 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling
[2019-11-07 04:10:50,890 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloor
[2019-11-07 04:10:50,890 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-11-07 04:10:50,890 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-11-07 04:10:50,890 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-11-07 04:10:50,890 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-11-07 04:10:50,891 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-11-07 04:10:50,891 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-11-07 04:10:50,891 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-11-07 04:10:50,891 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-11-07 04:10:50,891 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-11-07 04:10:50,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-11-07 04:10:50,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-11-07 04:10:50,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-11-07 04:10:50,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-11-07 04:10:50,892 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-11-07 04:10:50,893 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-11-07 04:10:50,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-11-07 04:10:50,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-11-07 04:10:50,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-11-07 04:10:50,894 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-11-07 04:10:50,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-11-07 04:10:50,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-11-07 04:10:50,895 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-11-07 04:10:50,896 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-11-07 04:10:50,897 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-07 04:10:50,897 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-11-07 04:10:50,897 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-11-07 04:10:50,897 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-11-07 04:10:50,897 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-11-07 04:10:50,898 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-11-07 04:10:50,898 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-11-07 04:10:50,898 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-11-07 04:10:50,899 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-11-07 04:10:50,899 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1
[2019-11-07 04:10:50,899 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2
[2019-11-07 04:10:50,900 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3
[2019-11-07 04:10:50,900 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4
[2019-11-07 04:10:50,901 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-07 04:10:50,901 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-07 04:10:50,901 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-11-07 04:10:50,901 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-11-07 04:10:50,902 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-11-07 04:10:50,902 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-11-07 04:10:50,903 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-11-07 04:10:50,903 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-11-07 04:10:50,903 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-11-07 04:10:50,903 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-11-07 04:10:50,904 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-11-07 04:10:50,905 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-11-07 04:10:50,906 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-11-07 04:10:50,906 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling
[2019-11-07 04:10:50,906 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloor
[2019-11-07 04:10:50,906 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-11-07 04:10:50,906 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-11-07 04:10:50,907 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-11-07 04:10:50,908 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-11-07 04:10:50,908 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty
[2019-11-07 04:10:50,908 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-11-07 04:10:50,908 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-11-07 04:10:50,909 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-11-07 04:10:50,909 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-11-07 04:10:50,910 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-11-07 04:10:50,910 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-11-07 04:10:50,910 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor
[2019-11-07 04:10:50,911 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-11-07 04:10:50,912 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-11-07 04:10:50,913 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-11-07 04:10:50,913 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-11-07 04:10:50,914 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-11-07 04:10:50,917 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-11-07 04:10:50,918 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-11-07 04:10:50,918 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-11-07 04:10:50,918 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-11-07 04:10:50,919 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-07 04:10:50,919 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-11-07 04:10:50,919 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-11-07 04:10:50,919 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-11-07 04:10:50,919 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-11-07 04:10:50,920 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-11-07 04:10:50,926 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-11-07 04:10:50,927 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-11-07 04:10:50,928 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-11-07 04:10:50,929 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-07 04:10:50,930 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-11-07 04:10:50,931 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-11-07 04:10:50,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-07 04:10:50,932 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-11-07 04:10:50,932 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-07 04:10:56,475 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-07 04:10:56,476 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-11-07 04:10:56,478 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:56 BoogieIcfgContainer
[2019-11-07 04:10:56,478 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-07 04:10:56,479 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-07 04:10:56,479 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-07 04:10:56,482 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-07 04:10:56,483 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:10:49" (1/3) ...
[2019-11-07 04:10:56,484 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa323fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:56, skipping insertion in model container
[2019-11-07 04:10:56,484 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:10:50" (2/3) ...
[2019-11-07 04:10:56,484 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fa323fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:10:56, skipping insertion in model container
[2019-11-07 04:10:56,485 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:10:56" (3/3) ...
[2019-11-07 04:10:56,486 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec2_product28.cil.c
[2019-11-07 04:10:56,496 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-07 04:10:56,506 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-07 04:10:56,519 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-07 04:10:56,550 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-07 04:10:56,550 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-07 04:10:56,550 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-07 04:10:56,550 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-07 04:10:56,551 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-07 04:10:56,551 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-07 04:10:56,551 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-07 04:10:56,551 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-07 04:10:56,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 591 states.
[2019-11-07 04:10:56,598 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2019-11-07 04:10:56,598 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:10:56,599 INFO  L410         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]
[2019-11-07 04:10:56,601 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:10:56,607 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:10:56,608 INFO  L82        PathProgramCache]: Analyzing trace with hash -1105412057, now seen corresponding path program 1 times
[2019-11-07 04:10:56,618 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:10:56,619 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175125419]
[2019-11-07 04:10:56,619 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:10:57,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:10:57,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-07 04:10:57,256 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175125419]
[2019-11-07 04:10:57,257 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:10:57,257 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-11-07 04:10:57,259 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175635243]
[2019-11-07 04:10:57,266 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-11-07 04:10:57,267 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:10:57,281 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-11-07 04:10:57,282 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-11-07 04:10:57,285 INFO  L87              Difference]: Start difference. First operand 591 states. Second operand 2 states.
[2019-11-07 04:10:57,393 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:10:57,394 INFO  L93              Difference]: Finished difference Result 488 states and 723 transitions.
[2019-11-07 04:10:57,394 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-11-07 04:10:57,395 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 74
[2019-11-07 04:10:57,396 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:10:57,426 INFO  L225             Difference]: With dead ends: 488
[2019-11-07 04:10:57,426 INFO  L226             Difference]: Without dead ends: 454
[2019-11-07 04:10:57,436 INFO  L630         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
[2019-11-07 04:10:57,453 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 454 states.
[2019-11-07 04:10:57,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 454.
[2019-11-07 04:10:57,550 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 454 states.
[2019-11-07 04:10:57,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 672 transitions.
[2019-11-07 04:10:57,559 INFO  L78                 Accepts]: Start accepts. Automaton has 454 states and 672 transitions. Word has length 74
[2019-11-07 04:10:57,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:10:57,562 INFO  L462      AbstractCegarLoop]: Abstraction has 454 states and 672 transitions.
[2019-11-07 04:10:57,562 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-11-07 04:10:57,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 454 states and 672 transitions.
[2019-11-07 04:10:57,568 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2019-11-07 04:10:57,568 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:10:57,568 INFO  L410         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]
[2019-11-07 04:10:57,569 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:10:57,569 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:10:57,569 INFO  L82        PathProgramCache]: Analyzing trace with hash 1603361045, now seen corresponding path program 1 times
[2019-11-07 04:10:57,569 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:10:57,569 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942405498]
[2019-11-07 04:10:57,570 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:10:57,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:10:58,033 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-11-07 04:10:58,034 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942405498]
[2019-11-07 04:10:58,034 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:10:58,034 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-11-07 04:10:58,035 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680866097]
[2019-11-07 04:10:58,039 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-11-07 04:10:58,039 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:10:58,039 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-11-07 04:10:58,040 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-11-07 04:10:58,040 INFO  L87              Difference]: Start difference. First operand 454 states and 672 transitions. Second operand 6 states.
[2019-11-07 04:11:01,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:11:01,402 INFO  L93              Difference]: Finished difference Result 1382 states and 2118 transitions.
[2019-11-07 04:11:01,407 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-11-07 04:11:01,407 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 75
[2019-11-07 04:11:01,408 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:11:01,417 INFO  L225             Difference]: With dead ends: 1382
[2019-11-07 04:11:01,417 INFO  L226             Difference]: Without dead ends: 970
[2019-11-07 04:11:01,425 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56
[2019-11-07 04:11:01,427 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 970 states.
[2019-11-07 04:11:01,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 875.
[2019-11-07 04:11:01,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 875 states.
[2019-11-07 04:11:01,528 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1344 transitions.
[2019-11-07 04:11:01,529 INFO  L78                 Accepts]: Start accepts. Automaton has 875 states and 1344 transitions. Word has length 75
[2019-11-07 04:11:01,535 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:11:01,535 INFO  L462      AbstractCegarLoop]: Abstraction has 875 states and 1344 transitions.
[2019-11-07 04:11:01,535 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-11-07 04:11:01,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 875 states and 1344 transitions.
[2019-11-07 04:11:01,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2019-11-07 04:11:01,553 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:11:01,555 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-07 04:11:01,556 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:11:01,557 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:11:01,557 INFO  L82        PathProgramCache]: Analyzing trace with hash 1284134923, now seen corresponding path program 1 times
[2019-11-07 04:11:01,557 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:11:01,558 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307854079]
[2019-11-07 04:11:01,558 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:11:01,643 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:11:01,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:11:01,830 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307854079]
[2019-11-07 04:11:01,830 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:11:01,830 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2019-11-07 04:11:01,830 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672081171]
[2019-11-07 04:11:01,831 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-11-07 04:11:01,831 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:11:01,831 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-11-07 04:11:01,832 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-11-07 04:11:01,832 INFO  L87              Difference]: Start difference. First operand 875 states and 1344 transitions. Second operand 12 states.
[2019-11-07 04:11:10,148 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:11:10,148 INFO  L93              Difference]: Finished difference Result 2654 states and 4095 transitions.
[2019-11-07 04:11:10,149 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2019-11-07 04:11:10,149 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 122
[2019-11-07 04:11:10,150 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:11:10,170 INFO  L225             Difference]: With dead ends: 2654
[2019-11-07 04:11:10,170 INFO  L226             Difference]: Without dead ends: 1821
[2019-11-07 04:11:10,179 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=836, Unknown=0, NotChecked=0, Total=992
[2019-11-07 04:11:10,183 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1821 states.
[2019-11-07 04:11:10,337 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1762.
[2019-11-07 04:11:10,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1762 states.
[2019-11-07 04:11:10,353 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2698 transitions.
[2019-11-07 04:11:10,356 INFO  L78                 Accepts]: Start accepts. Automaton has 1762 states and 2698 transitions. Word has length 122
[2019-11-07 04:11:10,356 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:11:10,357 INFO  L462      AbstractCegarLoop]: Abstraction has 1762 states and 2698 transitions.
[2019-11-07 04:11:10,357 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-11-07 04:11:10,357 INFO  L276                IsEmpty]: Start isEmpty. Operand 1762 states and 2698 transitions.
[2019-11-07 04:11:10,363 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2019-11-07 04:11:10,364 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:11:10,364 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-07 04:11:10,365 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:11:10,365 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:11:10,365 INFO  L82        PathProgramCache]: Analyzing trace with hash -340449060, now seen corresponding path program 1 times
[2019-11-07 04:11:10,365 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:11:10,366 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689149820]
[2019-11-07 04:11:10,366 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:11:10,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:11:10,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:11:10,716 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689149820]
[2019-11-07 04:11:10,716 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:11:10,716 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-07 04:11:10,716 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408352289]
[2019-11-07 04:11:10,717 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-07 04:11:10,717 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:11:10,717 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-07 04:11:10,718 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 04:11:10,718 INFO  L87              Difference]: Start difference. First operand 1762 states and 2698 transitions. Second operand 4 states.
[2019-11-07 04:11:12,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:11:12,501 INFO  L93              Difference]: Finished difference Result 4521 states and 7073 transitions.
[2019-11-07 04:11:12,502 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-07 04:11:12,502 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 123
[2019-11-07 04:11:12,503 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:11:12,532 INFO  L225             Difference]: With dead ends: 4521
[2019-11-07 04:11:12,533 INFO  L226             Difference]: Without dead ends: 2801
[2019-11-07 04:11:12,543 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-07 04:11:12,548 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2801 states.
[2019-11-07 04:11:12,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2801 to 2720.
[2019-11-07 04:11:12,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2720 states.
[2019-11-07 04:11:12,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2720 states to 2720 states and 4209 transitions.
[2019-11-07 04:11:12,924 INFO  L78                 Accepts]: Start accepts. Automaton has 2720 states and 4209 transitions. Word has length 123
[2019-11-07 04:11:12,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:11:12,925 INFO  L462      AbstractCegarLoop]: Abstraction has 2720 states and 4209 transitions.
[2019-11-07 04:11:12,925 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-07 04:11:12,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 2720 states and 4209 transitions.
[2019-11-07 04:11:12,929 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2019-11-07 04:11:12,929 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:11:12,929 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-07 04:11:12,930 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:11:12,930 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:11:12,930 INFO  L82        PathProgramCache]: Analyzing trace with hash -1965396766, now seen corresponding path program 1 times
[2019-11-07 04:11:12,931 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:11:12,931 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866406685]
[2019-11-07 04:11:12,931 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:11:12,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:11:13,157 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:11:13,158 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866406685]
[2019-11-07 04:11:13,158 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:11:13,158 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-07 04:11:13,159 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918200129]
[2019-11-07 04:11:13,161 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-07 04:11:13,161 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:11:13,162 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-07 04:11:13,162 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 04:11:13,162 INFO  L87              Difference]: Start difference. First operand 2720 states and 4209 transitions. Second operand 4 states.
[2019-11-07 04:11:15,320 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:11:15,320 INFO  L93              Difference]: Finished difference Result 7420 states and 11858 transitions.
[2019-11-07 04:11:15,321 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-07 04:11:15,321 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 124
[2019-11-07 04:11:15,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:11:15,360 INFO  L225             Difference]: With dead ends: 7420
[2019-11-07 04:11:15,361 INFO  L226             Difference]: Without dead ends: 4743
[2019-11-07 04:11:15,468 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-07 04:11:15,475 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4743 states.
[2019-11-07 04:11:15,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4743 to 4629.
[2019-11-07 04:11:15,764 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4629 states.
[2019-11-07 04:11:15,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 7294 transitions.
[2019-11-07 04:11:15,785 INFO  L78                 Accepts]: Start accepts. Automaton has 4629 states and 7294 transitions. Word has length 124
[2019-11-07 04:11:15,786 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:11:15,786 INFO  L462      AbstractCegarLoop]: Abstraction has 4629 states and 7294 transitions.
[2019-11-07 04:11:15,788 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-07 04:11:15,788 INFO  L276                IsEmpty]: Start isEmpty. Operand 4629 states and 7294 transitions.
[2019-11-07 04:11:15,796 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2019-11-07 04:11:15,796 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:11:15,796 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-07 04:11:15,797 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:11:15,797 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:11:15,798 INFO  L82        PathProgramCache]: Analyzing trace with hash -799164194, now seen corresponding path program 1 times
[2019-11-07 04:11:15,798 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:11:15,798 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287357302]
[2019-11-07 04:11:15,799 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:11:15,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:11:16,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:11:16,012 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287357302]
[2019-11-07 04:11:16,012 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:11:16,012 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-07 04:11:16,012 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372451652]
[2019-11-07 04:11:16,013 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-07 04:11:16,013 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:11:16,013 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-07 04:11:16,013 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 04:11:16,014 INFO  L87              Difference]: Start difference. First operand 4629 states and 7294 transitions. Second operand 4 states.
[2019-11-07 04:11:17,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:11:17,998 INFO  L93              Difference]: Finished difference Result 13234 states and 21956 transitions.
[2019-11-07 04:11:17,999 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-07 04:11:17,999 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 125
[2019-11-07 04:11:17,999 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:11:18,063 INFO  L225             Difference]: With dead ends: 13234
[2019-11-07 04:11:18,063 INFO  L226             Difference]: Without dead ends: 8650
[2019-11-07 04:11:18,090 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-11-07 04:11:18,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 8650 states.
[2019-11-07 04:11:18,531 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 8650 to 8471.
[2019-11-07 04:11:18,531 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8471 states.
[2019-11-07 04:11:18,565 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8471 states to 8471 states and 13782 transitions.
[2019-11-07 04:11:18,567 INFO  L78                 Accepts]: Start accepts. Automaton has 8471 states and 13782 transitions. Word has length 125
[2019-11-07 04:11:18,568 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:11:18,569 INFO  L462      AbstractCegarLoop]: Abstraction has 8471 states and 13782 transitions.
[2019-11-07 04:11:18,569 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-11-07 04:11:18,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 8471 states and 13782 transitions.
[2019-11-07 04:11:18,573 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2019-11-07 04:11:18,573 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:11:18,573 INFO  L410         BasicCegarLoop]: trace histogram [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]
[2019-11-07 04:11:18,574 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:11:18,574 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:11:18,574 INFO  L82        PathProgramCache]: Analyzing trace with hash 994311076, now seen corresponding path program 1 times
[2019-11-07 04:11:18,574 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:11:18,574 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332000894]
[2019-11-07 04:11:18,575 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:11:18,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:11:18,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:11:18,749 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332000894]
[2019-11-07 04:11:18,749 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:11:18,749 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-11-07 04:11:18,750 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128372963]
[2019-11-07 04:11:18,750 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-11-07 04:11:18,750 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:11:18,751 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-11-07 04:11:18,751 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-11-07 04:11:18,751 INFO  L87              Difference]: Start difference. First operand 8471 states and 13782 transitions. Second operand 4 states.