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_spec1_product24.cil.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 23:03:02,449 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 23:03:02,451 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 23:03:02,463 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 23:03:02,464 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 23:03:02,466 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 23:03:02,468 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 23:03:02,477 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 23:03:02,482 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 23:03:02,482 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 23:03:02,484 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 23:03:02,485 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 23:03:02,486 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 23:03:02,487 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 23:03:02,489 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 23:03:02,490 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 23:03:02,492 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 23:03:02,493 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 23:03:02,496 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 23:03:02,499 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 23:03:02,503 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 23:03:02,503 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 23:03:02,505 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 23:03:02,505 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 23:03:02,508 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 23:03:02,508 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 23:03:02,509 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 23:03:02,510 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 23:03:02,511 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 23:03:02,512 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 23:03:02,513 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 23:03:02,515 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 23:03:02,516 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 23:03:02,517 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 23:03:02,519 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 23:03:02,519 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 23:03:02,519 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 23:03:02,520 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 23:03:02,520 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 23:03:02,522 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 23:03:02,524 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 23:03:02,525 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 23:03:02,560 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 23:03:02,561 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 23:03:02,564 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 23:03:02,564 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 23:03:02,564 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 23:03:02,565 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 23:03:02,565 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 23:03:02,565 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 23:03:02,565 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 23:03:02,565 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 23:03:02,565 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 23:03:02,566 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 23:03:02,566 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 23:03:02,566 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 23:03:02,568 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 23:03:02,569 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 23:03:02,569 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 23:03:02,569 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 23:03:02,569 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 23:03:02,569 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 23:03:02,570 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 23:03:02,570 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 23:03:02,570 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 23:03:02,570 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 23:03:02,570 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 23:03:02,571 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 23:03:02,571 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 23:03:02,571 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 23:03:02,571 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 23:03:02,840 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 23:03:02,854 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 23:03:02,857 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 23:03:02,859 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 23:03:02,859 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 23:03:02,860 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c
[2019-10-13 23:03:02,938 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a679b7991/fec3ad9fb3a34c829aa66e07235c304e/FLAG5fe60d9a7
[2019-10-13 23:03:03,626 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 23:03:03,628 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product24.cil.c
[2019-10-13 23:03:03,660 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a679b7991/fec3ad9fb3a34c829aa66e07235c304e/FLAG5fe60d9a7
[2019-10-13 23:03:03,794 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a679b7991/fec3ad9fb3a34c829aa66e07235c304e
[2019-10-13 23:03:03,805 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 23:03:03,807 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 23:03:03,808 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 23:03:03,808 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 23:03:03,812 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 23:03:03,813 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:03" (1/1) ...
[2019-10-13 23:03:03,816 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30b9758f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:03, skipping insertion in model container
[2019-10-13 23:03:03,817 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:03" (1/1) ...
[2019-10-13 23:03:03,824 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 23:03:03,897 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 23:03:04,591 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:03:04,608 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 23:03:04,800 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:03:04,876 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 23:03:04,876 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04 WrapperNode
[2019-10-13 23:03:04,877 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 23:03:04,877 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 23:03:04,877 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 23:03:04,877 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 23:03:04,888 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:04,888 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:04,921 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:04,921 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:05,000 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:05,054 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:05,076 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (1/1) ...
[2019-10-13 23:03:05,104 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 23:03:05,104 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 23:03:05,105 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 23:03:05,105 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 23:03:05,106 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (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 23:03:05,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 23:03:05,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 23:03:05,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:03:05,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-13 23:03:05,183 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-13 23:03:05,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:03:05,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-13 23:03:05,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-13 23:03:05,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-13 23:03:05,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-13 23:03:05,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-13 23:03:05,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-13 23:03:05,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-13 23:03:05,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-13 23:03:05,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-13 23:03:05,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-13 23:03:05,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-13 23:03:05,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-13 23:03:05,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-13 23:03:05,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-13 23:03:05,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-13 23:03:05,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-13 23:03:05,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-13 23:03:05,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-13 23:03:05,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-13 23:03:05,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-13 23:03:05,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-13 23:03:05,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-13 23:03:05,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-13 23:03:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-13 23:03:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-13 23:03:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-13 23:03:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-13 23:03:05,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-13 23:03:05,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-13 23:03:05,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-13 23:03:05,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-13 23:03:05,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-13 23:03:05,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-13 23:03:05,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__twothirdsfull
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-13 23:03:05,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-13 23:03:05,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-13 23:03:05,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull
[2019-10-13 23:03:05,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:03:05,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-13 23:03:05,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-13 23:03:05,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor
[2019-10-13 23:03:05,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-13 23:03:05,200 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__executivefloor
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure isExecutiveFloor
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-13 23:03:05,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-13 23:03:05,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2019-10-13 23:03:05,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2
[2019-10-13 23:03:05,202 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3
[2019-10-13 23:03:05,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4
[2019-10-13 23:03:05,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-13 23:03:05,203 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-13 23:03:05,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-13 23:03:05,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-13 23:03:05,204 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-13 23:03:05,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-13 23:03:05,205 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-13 23:03:05,206 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-13 23:03:05,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 23:03:05,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 23:03:05,206 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-13 23:03:05,207 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-13 23:03:05,208 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-13 23:03:05,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-13 23:03:05,208 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-13 23:03:05,208 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:03:05,209 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-13 23:03:05,210 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-13 23:03:05,211 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-13 23:03:05,212 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-13 23:03:05,213 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-13 23:03:05,213 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-13 23:03:05,213 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-13 23:03:05,213 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-13 23:03:05,214 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-13 23:03:05,214 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-13 23:03:05,214 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-13 23:03:05,214 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-13 23:03:05,215 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-13 23:03:05,216 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-13 23:03:05,216 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2019-10-13 23:03:05,216 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4
[2019-10-13 23:03:05,217 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-13 23:03:05,217 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-13 23:03:05,217 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-13 23:03:05,217 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-13 23:03:05,217 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-13 23:03:05,218 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 23:03:05,219 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-13 23:03:05,222 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-13 23:03:05,222 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-13 23:03:05,223 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-13 23:03:05,223 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-13 23:03:05,224 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-13 23:03:05,224 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-13 23:03:05,224 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2
[2019-10-13 23:03:05,224 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-13 23:03:05,224 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-13 23:03:05,225 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-13 23:03:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-13 23:03:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-13 23:03:05,233 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure isExecutiveFloor
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-13 23:03:05,234 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-13 23:03:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-13 23:03:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-13 23:03:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-13 23:03:05,235 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-13 23:03:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-13 23:03:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight
[2019-10-13 23:03:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__twothirdsfull
[2019-10-13 23:03:05,236 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor
[2019-10-13 23:03:05,237 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__executivefloor
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 23:03:05,238 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-13 23:03:05,239 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 23:03:10,711 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 23:03:10,711 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-13 23:03:10,713 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10 BoogieIcfgContainer
[2019-10-13 23:03:10,713 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 23:03:10,714 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 23:03:10,714 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 23:03:10,718 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 23:03:10,718 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:03" (1/3) ...
[2019-10-13 23:03:10,719 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e327ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container
[2019-10-13 23:03:10,719 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:04" (2/3) ...
[2019-10-13 23:03:10,719 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e327ccd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:10, skipping insertion in model container
[2019-10-13 23:03:10,719 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:10" (3/3) ...
[2019-10-13 23:03:10,721 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec1_product24.cil.c
[2019-10-13 23:03:10,731 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 23:03:10,741 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 23:03:10,753 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 23:03:10,785 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 23:03:10,786 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 23:03:10,786 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 23:03:10,786 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 23:03:10,786 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 23:03:10,786 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 23:03:10,786 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 23:03:10,786 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 23:03:10,820 INFO  L276                IsEmpty]: Start isEmpty. Operand 610 states.
[2019-10-13 23:03:10,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2019-10-13 23:03:10,834 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:10,835 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:10,837 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:10,843 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:10,843 INFO  L82        PathProgramCache]: Analyzing trace with hash 167046203, now seen corresponding path program 1 times
[2019-10-13 23:03:10,853 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:10,854 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642271623]
[2019-10-13 23:03:10,854 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:10,854 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:10,854 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:11,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:11,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-13 23:03:11,508 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642271623]
[2019-10-13 23:03:11,509 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:11,509 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-13 23:03:11,510 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287041688]
[2019-10-13 23:03:11,516 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-13 23:03:11,516 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:11,526 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-13 23:03:11,527 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-13 23:03:11,529 INFO  L87              Difference]: Start difference. First operand 610 states. Second operand 2 states.
[2019-10-13 23:03:11,600 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:11,600 INFO  L93              Difference]: Finished difference Result 513 states and 757 transitions.
[2019-10-13 23:03:11,600 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-10-13 23:03:11,602 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 97
[2019-10-13 23:03:11,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:11,626 INFO  L225             Difference]: With dead ends: 513
[2019-10-13 23:03:11,626 INFO  L226             Difference]: Without dead ends: 479
[2019-10-13 23:03:11,630 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 23:03:11,650 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 479 states.
[2019-10-13 23:03:11,721 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479.
[2019-10-13 23:03:11,723 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 479 states.
[2019-10-13 23:03:11,731 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 706 transitions.
[2019-10-13 23:03:11,733 INFO  L78                 Accepts]: Start accepts. Automaton has 479 states and 706 transitions. Word has length 97
[2019-10-13 23:03:11,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:11,736 INFO  L462      AbstractCegarLoop]: Abstraction has 479 states and 706 transitions.
[2019-10-13 23:03:11,736 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-13 23:03:11,736 INFO  L276                IsEmpty]: Start isEmpty. Operand 479 states and 706 transitions.
[2019-10-13 23:03:11,742 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2019-10-13 23:03:11,742 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:11,742 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:11,743 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:11,743 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:11,743 INFO  L82        PathProgramCache]: Analyzing trace with hash 697325300, now seen corresponding path program 1 times
[2019-10-13 23:03:11,743 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:11,744 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133100242]
[2019-10-13 23:03:11,744 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:11,744 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:11,744 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:11,905 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:12,262 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-13 23:03:12,263 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133100242]
[2019-10-13 23:03:12,263 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:12,263 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-10-13 23:03:12,264 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009525121]
[2019-10-13 23:03:12,267 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 23:03:12,271 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:12,271 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 23:03:12,271 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-10-13 23:03:12,272 INFO  L87              Difference]: Start difference. First operand 479 states and 706 transitions. Second operand 9 states.
[2019-10-13 23:03:18,450 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:18,450 INFO  L93              Difference]: Finished difference Result 1298 states and 1960 transitions.
[2019-10-13 23:03:18,451 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2019-10-13 23:03:18,451 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 98
[2019-10-13 23:03:18,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:18,472 INFO  L225             Difference]: With dead ends: 1298
[2019-10-13 23:03:18,473 INFO  L226             Difference]: Without dead ends: 872
[2019-10-13 23:03:18,498 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 23:03:18,506 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 872 states.
[2019-10-13 23:03:18,635 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 841.
[2019-10-13 23:03:18,636 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 841 states.
[2019-10-13 23:03:18,646 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 841 states to 841 states and 1228 transitions.
[2019-10-13 23:03:18,647 INFO  L78                 Accepts]: Start accepts. Automaton has 841 states and 1228 transitions. Word has length 98
[2019-10-13 23:03:18,647 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:18,648 INFO  L462      AbstractCegarLoop]: Abstraction has 841 states and 1228 transitions.
[2019-10-13 23:03:18,648 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-13 23:03:18,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 841 states and 1228 transitions.
[2019-10-13 23:03:18,653 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2019-10-13 23:03:18,653 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:18,653 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:18,653 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:18,654 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:18,654 INFO  L82        PathProgramCache]: Analyzing trace with hash -1082098819, now seen corresponding path program 1 times
[2019-10-13 23:03:18,654 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:18,654 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596583446]
[2019-10-13 23:03:18,654 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:18,655 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:18,655 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:18,762 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:18,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-13 23:03:18,966 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596583446]
[2019-10-13 23:03:18,966 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:18,966 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 23:03:18,967 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885114348]
[2019-10-13 23:03:18,969 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 23:03:18,969 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:18,970 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 23:03:18,970 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 23:03:18,970 INFO  L87              Difference]: Start difference. First operand 841 states and 1228 transitions. Second operand 3 states.
[2019-10-13 23:03:19,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:19,138 INFO  L93              Difference]: Finished difference Result 2409 states and 3567 transitions.
[2019-10-13 23:03:19,139 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 23:03:19,139 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 99
[2019-10-13 23:03:19,142 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:19,162 INFO  L225             Difference]: With dead ends: 2409
[2019-10-13 23:03:19,163 INFO  L226             Difference]: Without dead ends: 1623
[2019-10-13 23:03:19,171 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 23:03:19,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1623 states.
[2019-10-13 23:03:19,326 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1623 to 1616.
[2019-10-13 23:03:19,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1616 states.
[2019-10-13 23:03:19,347 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1616 states to 1616 states and 2384 transitions.
[2019-10-13 23:03:19,350 INFO  L78                 Accepts]: Start accepts. Automaton has 1616 states and 2384 transitions. Word has length 99
[2019-10-13 23:03:19,353 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:19,353 INFO  L462      AbstractCegarLoop]: Abstraction has 1616 states and 2384 transitions.
[2019-10-13 23:03:19,353 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 23:03:19,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 1616 states and 2384 transitions.
[2019-10-13 23:03:19,367 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2019-10-13 23:03:19,367 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:19,367 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:19,368 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:19,368 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:19,368 INFO  L82        PathProgramCache]: Analyzing trace with hash 814303691, now seen corresponding path program 1 times
[2019-10-13 23:03:19,368 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:19,369 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847557756]
[2019-10-13 23:03:19,369 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:19,369 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:19,369 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:19,514 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:19,813 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-13 23:03:19,814 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847557756]
[2019-10-13 23:03:19,814 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:19,815 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 23:03:19,815 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862978917]
[2019-10-13 23:03:19,817 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 23:03:19,817 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:19,818 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 23:03:19,818 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 23:03:19,818 INFO  L87              Difference]: Start difference. First operand 1616 states and 2384 transitions. Second operand 6 states.
[2019-10-13 23:03:23,108 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:23,109 INFO  L93              Difference]: Finished difference Result 5129 states and 7717 transitions.
[2019-10-13 23:03:23,109 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-13 23:03:23,110 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 100
[2019-10-13 23:03:23,110 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:23,149 INFO  L225             Difference]: With dead ends: 5129
[2019-10-13 23:03:23,149 INFO  L226             Difference]: Without dead ends: 3569
[2019-10-13 23:03:23,163 INFO  L600         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
[2019-10-13 23:03:23,169 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3569 states.
[2019-10-13 23:03:23,432 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3258.
[2019-10-13 23:03:23,432 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3258 states.
[2019-10-13 23:03:23,470 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3258 states to 3258 states and 4895 transitions.
[2019-10-13 23:03:23,471 INFO  L78                 Accepts]: Start accepts. Automaton has 3258 states and 4895 transitions. Word has length 100
[2019-10-13 23:03:23,472 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:23,472 INFO  L462      AbstractCegarLoop]: Abstraction has 3258 states and 4895 transitions.
[2019-10-13 23:03:23,472 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 23:03:23,472 INFO  L276                IsEmpty]: Start isEmpty. Operand 3258 states and 4895 transitions.
[2019-10-13 23:03:23,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 147
[2019-10-13 23:03:23,481 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:23,482 INFO  L380         BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:23,482 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:23,482 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:23,483 INFO  L82        PathProgramCache]: Analyzing trace with hash -304140986, now seen corresponding path program 1 times
[2019-10-13 23:03:23,483 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:23,484 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46850656]
[2019-10-13 23:03:23,484 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:23,484 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:23,484 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:23,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:23,812 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2019-10-13 23:03:23,813 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46850656]
[2019-10-13 23:03:23,813 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:23,813 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-13 23:03:23,813 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697474753]
[2019-10-13 23:03:23,815 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-13 23:03:23,815 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:23,815 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-13 23:03:23,816 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-10-13 23:03:23,816 INFO  L87              Difference]: Start difference. First operand 3258 states and 4895 transitions. Second operand 7 states.
[2019-10-13 23:03:27,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:27,563 INFO  L93              Difference]: Finished difference Result 8025 states and 12049 transitions.
[2019-10-13 23:03:27,564 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-13 23:03:27,564 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 146
[2019-10-13 23:03:27,564 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:27,605 INFO  L225             Difference]: With dead ends: 8025
[2019-10-13 23:03:27,605 INFO  L226             Difference]: Without dead ends: 4826
[2019-10-13 23:03:27,624 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:03:27,631 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 4826 states.
[2019-10-13 23:03:27,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4739.
[2019-10-13 23:03:27,992 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 4739 states.
[2019-10-13 23:03:28,023 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 4739 states to 4739 states and 7072 transitions.
[2019-10-13 23:03:28,025 INFO  L78                 Accepts]: Start accepts. Automaton has 4739 states and 7072 transitions. Word has length 146
[2019-10-13 23:03:28,027 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:28,027 INFO  L462      AbstractCegarLoop]: Abstraction has 4739 states and 7072 transitions.
[2019-10-13 23:03:28,027 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-13 23:03:28,028 INFO  L276                IsEmpty]: Start isEmpty. Operand 4739 states and 7072 transitions.
[2019-10-13 23:03:28,034 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2019-10-13 23:03:28,037 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:28,038 INFO  L380         BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:03:28,038 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:28,038 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:28,039 INFO  L82        PathProgramCache]: Analyzing trace with hash 2131483078, now seen corresponding path program 1 times
[2019-10-13 23:03:28,039 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:28,039 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568601103]
[2019-10-13 23:03:28,040 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:28,040 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:28,040 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:28,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:28,335 INFO  L134       CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2019-10-13 23:03:28,336 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568601103]
[2019-10-13 23:03:28,337 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:28,337 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2019-10-13 23:03:28,338 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411724017]
[2019-10-13 23:03:28,338 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-13 23:03:28,339 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:28,339 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-13 23:03:28,339 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:03:28,339 INFO  L87              Difference]: Start difference. First operand 4739 states and 7072 transitions. Second operand 12 states.