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_product26.cil.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 23:03:04,341 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 23:03:04,343 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 23:03:04,356 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 23:03:04,356 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 23:03:04,357 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 23:03:04,359 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 23:03:04,360 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 23:03:04,364 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 23:03:04,365 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 23:03:04,366 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 23:03:04,368 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 23:03:04,368 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 23:03:04,373 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 23:03:04,374 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 23:03:04,376 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 23:03:04,377 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 23:03:04,381 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 23:03:04,384 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 23:03:04,387 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 23:03:04,390 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 23:03:04,391 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 23:03:04,393 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 23:03:04,396 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 23:03:04,398 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 23:03:04,398 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 23:03:04,399 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 23:03:04,399 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 23:03:04,400 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 23:03:04,401 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 23:03:04,401 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 23:03:04,403 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 23:03:04,404 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 23:03:04,405 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 23:03:04,406 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 23:03:04,406 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 23:03:04,407 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 23:03:04,411 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 23:03:04,411 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 23:03:04,412 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 23:03:04,413 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 23:03:04,414 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 23:03:04,435 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 23:03:04,436 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 23:03:04,438 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 23:03:04,439 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 23:03:04,439 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 23:03:04,439 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 23:03:04,440 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 23:03:04,440 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 23:03:04,440 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 23:03:04,440 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 23:03:04,442 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 23:03:04,442 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 23:03:04,442 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 23:03:04,443 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 23:03:04,443 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 23:03:04,443 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 23:03:04,443 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 23:03:04,444 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 23:03:04,444 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 23:03:04,444 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 23:03:04,445 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 23:03:04,445 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 23:03:04,445 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 23:03:04,445 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 23:03:04,445 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 23:03:04,446 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 23:03:04,446 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 23:03:04,446 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 23:03:04,446 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 23:03:04,763 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 23:03:04,788 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 23:03:04,792 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 23:03:04,794 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 23:03:04,794 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 23:03:04,795 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c
[2019-10-13 23:03:04,868 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db813bd2d/5f871de6c8f5486c85e65c0f75cc931c/FLAGc50e5c08d
[2019-10-13 23:03:05,555 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 23:03:05,556 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c
[2019-10-13 23:03:05,584 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db813bd2d/5f871de6c8f5486c85e65c0f75cc931c/FLAGc50e5c08d
[2019-10-13 23:03:05,742 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db813bd2d/5f871de6c8f5486c85e65c0f75cc931c
[2019-10-13 23:03:05,752 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 23:03:05,753 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 23:03:05,754 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 23:03:05,754 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 23:03:05,757 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 23:03:05,757 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:05" (1/1) ...
[2019-10-13 23:03:05,760 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d74f4b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:05, skipping insertion in model container
[2019-10-13 23:03:05,760 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:03:05" (1/1) ...
[2019-10-13 23:03:05,767 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 23:03:05,846 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 23:03:06,611 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:03:06,639 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 23:03:06,810 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:03:06,883 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 23:03:06,884 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06 WrapperNode
[2019-10-13 23:03:06,884 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 23:03:06,885 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 23:03:06,885 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 23:03:06,885 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 23:03:06,898 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:06,898 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:06,932 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:06,933 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:06,996 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:07,037 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:07,061 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (1/1) ...
[2019-10-13 23:03:07,086 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 23:03:07,087 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 23:03:07,087 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 23:03:07,087 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 23:03:07,089 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (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 23:03:07,175 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 23:03:07,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 23:03:07,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:03:07,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-13 23:03:07,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-13 23:03:07,178 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-13 23:03:07,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-13 23:03:07,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-13 23:03:07,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-13 23:03:07,179 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-13 23:03:07,180 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2019-10-13 23:03:07,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-13 23:03:07,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-13 23:03:07,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-13 23:03:07,181 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-13 23:03:07,182 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-13 23:03:07,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-13 23:03:07,184 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-13 23:03:07,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-13 23:03:07,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-13 23:03:07,185 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-13 23:03:07,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-13 23:03:07,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-13 23:03:07,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-13 23:03:07,186 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:03:07,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-13 23:03:07,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-13 23:03:07,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty
[2019-10-13 23:03:07,187 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-13 23:03:07,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__empty
[2019-10-13 23:03:07,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-13 23:03:07,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-13 23:03:07,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-13 23:03:07,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-13 23:03:07,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:03:07,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-13 23:03:07,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-13 23:03:07,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-13 23:03:07,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-13 23:03:07,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-13 23:03:07,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-13 23:03:07,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-13 23:03:07,192 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-13 23:03:07,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-13 23:03:07,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-13 23:03:07,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-13 23:03:07,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-13 23:03:07,193 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-13 23:03:07,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-13 23:03:07,194 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-13 23:03:07,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-13 23:03:07,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-13 23:03:07,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-13 23:03:07,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-13 23:03:07,195 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-13 23:03:07,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-13 23:03:07,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-13 23:03:07,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 23:03:07,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-13 23:03:07,196 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-13 23:03:07,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-13 23:03:07,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-13 23:03:07,197 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-13 23:03:07,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-13 23:03:07,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-13 23:03:07,198 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-13 23:03:07,199 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-13 23:03:07,199 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 23:03:07,199 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 23:03:07,200 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-13 23:03:07,200 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-13 23:03:07,200 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-13 23:03:07,201 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-13 23:03:07,201 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-13 23:03:07,201 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-13 23:03:07,201 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-13 23:03:07,201 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-13 23:03:07,202 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-13 23:03:07,203 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-13 23:03:07,204 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-13 23:03:07,205 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-13 23:03:07,205 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-13 23:03:07,205 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-13 23:03:07,205 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-13 23:03:07,205 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-13 23:03:07,206 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-13 23:03:07,207 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-13 23:03:07,207 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-13 23:03:07,207 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-13 23:03:07,207 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:03:07,208 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-13 23:03:07,208 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-13 23:03:07,208 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty
[2019-10-13 23:03:07,208 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3
[2019-10-13 23:03:07,208 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__empty
[2019-10-13 23:03:07,209 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 23:03:07,209 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-13 23:03:07,209 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-13 23:03:07,210 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-13 23:03:07,211 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-13 23:03:07,211 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-13 23:03:07,212 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-13 23:03:07,212 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-13 23:03:07,212 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 23:03:07,212 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-13 23:03:07,212 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-13 23:03:07,213 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 23:03:07,213 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:03:07,214 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:03:07,217 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 23:03:07,217 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-13 23:03:07,217 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-13 23:03:07,218 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-13 23:03:07,218 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-13 23:03:07,218 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-13 23:03:07,219 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-13 23:03:07,219 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-13 23:03:07,219 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-13 23:03:07,220 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-13 23:03:07,227 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-13 23:03:07,227 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-13 23:03:07,227 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-13 23:03:07,227 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2019-10-13 23:03:07,228 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2
[2019-10-13 23:03:07,228 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4
[2019-10-13 23:03:07,228 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 23:03:07,228 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-13 23:03:07,229 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-13 23:03:07,230 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 23:03:07,231 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-13 23:03:07,231 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 23:03:12,479 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 23:03:12,480 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-13 23:03:12,481 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:12 BoogieIcfgContainer
[2019-10-13 23:03:12,482 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 23:03:12,483 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 23:03:12,483 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 23:03:12,486 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 23:03:12,486 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:03:05" (1/3) ...
[2019-10-13 23:03:12,487 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe7d507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:12, skipping insertion in model container
[2019-10-13 23:03:12,487 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:03:06" (2/3) ...
[2019-10-13 23:03:12,488 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe7d507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:03:12, skipping insertion in model container
[2019-10-13 23:03:12,488 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:03:12" (3/3) ...
[2019-10-13 23:03:12,489 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.c
[2019-10-13 23:03:12,499 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 23:03:12,509 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 23:03:12,521 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 23:03:12,551 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 23:03:12,552 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 23:03:12,552 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 23:03:12,552 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 23:03:12,552 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 23:03:12,552 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 23:03:12,552 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 23:03:12,552 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 23:03:12,584 INFO  L276                IsEmpty]: Start isEmpty. Operand 565 states.
[2019-10-13 23:03:12,599 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2019-10-13 23:03:12,599 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:12,600 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 23:03:12,602 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:12,608 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:12,608 INFO  L82        PathProgramCache]: Analyzing trace with hash -579989771, now seen corresponding path program 1 times
[2019-10-13 23:03:12,618 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:12,619 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567822741]
[2019-10-13 23:03:12,619 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:12,619 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:12,619 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:13,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:13,553 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 23:03:13,554 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567822741]
[2019-10-13 23:03:13,555 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:13,555 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 23:03:13,555 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822491726]
[2019-10-13 23:03:13,560 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 23:03:13,561 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:13,575 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 23:03:13,576 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2019-10-13 23:03:13,578 INFO  L87              Difference]: Start difference. First operand 565 states. Second operand 6 states.
[2019-10-13 23:03:16,858 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:16,859 INFO  L93              Difference]: Finished difference Result 1325 states and 2062 transitions.
[2019-10-13 23:03:16,864 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2019-10-13 23:03:16,865 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 97
[2019-10-13 23:03:16,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:16,896 INFO  L225             Difference]: With dead ends: 1325
[2019-10-13 23:03:16,896 INFO  L226             Difference]: Without dead ends: 919
[2019-10-13 23:03:16,906 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 23:03:16,928 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 919 states.
[2019-10-13 23:03:17,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 828.
[2019-10-13 23:03:17,073 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 828 states.
[2019-10-13 23:03:17,082 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1283 transitions.
[2019-10-13 23:03:17,084 INFO  L78                 Accepts]: Start accepts. Automaton has 828 states and 1283 transitions. Word has length 97
[2019-10-13 23:03:17,085 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:17,085 INFO  L462      AbstractCegarLoop]: Abstraction has 828 states and 1283 transitions.
[2019-10-13 23:03:17,085 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 23:03:17,085 INFO  L276                IsEmpty]: Start isEmpty. Operand 828 states and 1283 transitions.
[2019-10-13 23:03:17,100 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2019-10-13 23:03:17,103 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:17,103 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, 1, 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 23:03:17,104 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:17,104 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:17,104 INFO  L82        PathProgramCache]: Analyzing trace with hash -811356628, now seen corresponding path program 1 times
[2019-10-13 23:03:17,105 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:17,105 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014628671]
[2019-10-13 23:03:17,105 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:17,106 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:17,106 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:17,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:17,426 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 23:03:17,427 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014628671]
[2019-10-13 23:03:17,427 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:17,427 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12
[2019-10-13 23:03:17,428 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546656368]
[2019-10-13 23:03:17,444 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 12 states
[2019-10-13 23:03:17,444 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:17,445 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2019-10-13 23:03:17,445 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:03:17,447 INFO  L87              Difference]: Start difference. First operand 828 states and 1283 transitions. Second operand 12 states.
[2019-10-13 23:03:25,304 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:25,305 INFO  L93              Difference]: Finished difference Result 2449 states and 3836 transitions.
[2019-10-13 23:03:25,305 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. 
[2019-10-13 23:03:25,305 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states. Word has length 125
[2019-10-13 23:03:25,306 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:25,319 INFO  L225             Difference]: With dead ends: 2449
[2019-10-13 23:03:25,320 INFO  L226             Difference]: Without dead ends: 1674
[2019-10-13 23:03:25,328 INFO  L600         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
[2019-10-13 23:03:25,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1674 states.
[2019-10-13 23:03:25,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1674 to 1615.
[2019-10-13 23:03:25,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1615 states.
[2019-10-13 23:03:25,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1615 states to 1615 states and 2513 transitions.
[2019-10-13 23:03:25,512 INFO  L78                 Accepts]: Start accepts. Automaton has 1615 states and 2513 transitions. Word has length 125
[2019-10-13 23:03:25,515 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:25,516 INFO  L462      AbstractCegarLoop]: Abstraction has 1615 states and 2513 transitions.
[2019-10-13 23:03:25,516 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 12 states.
[2019-10-13 23:03:25,517 INFO  L276                IsEmpty]: Start isEmpty. Operand 1615 states and 2513 transitions.
[2019-10-13 23:03:25,527 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2019-10-13 23:03:25,528 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:25,528 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, 1, 1, 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 23:03:25,528 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:25,529 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:25,529 INFO  L82        PathProgramCache]: Analyzing trace with hash -1211808752, now seen corresponding path program 1 times
[2019-10-13 23:03:25,529 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:25,530 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689890447]
[2019-10-13 23:03:25,530 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:25,530 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:25,531 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:25,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:25,885 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 23:03:25,886 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689890447]
[2019-10-13 23:03:25,886 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:25,886 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-13 23:03:25,887 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923570151]
[2019-10-13 23:03:25,888 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-13 23:03:25,888 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:25,888 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-13 23:03:25,888 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-10-13 23:03:25,888 INFO  L87              Difference]: Start difference. First operand 1615 states and 2513 transitions. Second operand 8 states.
[2019-10-13 23:03:26,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:26,047 INFO  L93              Difference]: Finished difference Result 3457 states and 5469 transitions.
[2019-10-13 23:03:26,048 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 23:03:26,048 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 126
[2019-10-13 23:03:26,049 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:26,067 INFO  L225             Difference]: With dead ends: 3457
[2019-10-13 23:03:26,068 INFO  L226             Difference]: Without dead ends: 1897
[2019-10-13 23:03:26,080 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-10-13 23:03:26,084 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1897 states.
[2019-10-13 23:03:26,214 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1897 to 1639.
[2019-10-13 23:03:26,215 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1639 states.
[2019-10-13 23:03:26,230 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1639 states to 1639 states and 2537 transitions.
[2019-10-13 23:03:26,232 INFO  L78                 Accepts]: Start accepts. Automaton has 1639 states and 2537 transitions. Word has length 126
[2019-10-13 23:03:26,233 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:26,234 INFO  L462      AbstractCegarLoop]: Abstraction has 1639 states and 2537 transitions.
[2019-10-13 23:03:26,234 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-13 23:03:26,234 INFO  L276                IsEmpty]: Start isEmpty. Operand 1639 states and 2537 transitions.
[2019-10-13 23:03:26,241 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2019-10-13 23:03:26,241 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:26,242 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, 1, 1, 1, 1, 1, 1, 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 23:03:26,242 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:26,242 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:26,243 INFO  L82        PathProgramCache]: Analyzing trace with hash -2048360334, now seen corresponding path program 1 times
[2019-10-13 23:03:26,243 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:26,243 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757615312]
[2019-10-13 23:03:26,244 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:26,244 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:26,244 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:26,364 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:26,546 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 23:03:26,547 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757615312]
[2019-10-13 23:03:26,547 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:26,548 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-13 23:03:26,548 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824357084]
[2019-10-13 23:03:26,549 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-13 23:03:26,549 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:26,550 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-13 23:03:26,550 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:03:26,550 INFO  L87              Difference]: Start difference. First operand 1639 states and 2537 transitions. Second operand 5 states.
[2019-10-13 23:03:26,707 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:26,707 INFO  L93              Difference]: Finished difference Result 3247 states and 5062 transitions.
[2019-10-13 23:03:26,708 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-13 23:03:26,708 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 130
[2019-10-13 23:03:26,712 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:26,729 INFO  L225             Difference]: With dead ends: 3247
[2019-10-13 23:03:26,729 INFO  L226             Difference]: Without dead ends: 1663
[2019-10-13 23:03:26,741 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-13 23:03:26,744 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1663 states.
[2019-10-13 23:03:26,864 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1655.
[2019-10-13 23:03:26,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1655 states.
[2019-10-13 23:03:26,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2557 transitions.
[2019-10-13 23:03:26,881 INFO  L78                 Accepts]: Start accepts. Automaton has 1655 states and 2557 transitions. Word has length 130
[2019-10-13 23:03:26,882 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:26,882 INFO  L462      AbstractCegarLoop]: Abstraction has 1655 states and 2557 transitions.
[2019-10-13 23:03:26,882 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-13 23:03:26,883 INFO  L276                IsEmpty]: Start isEmpty. Operand 1655 states and 2557 transitions.
[2019-10-13 23:03:26,890 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 135
[2019-10-13 23:03:26,890 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:26,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:03:26,891 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:26,891 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:26,892 INFO  L82        PathProgramCache]: Analyzing trace with hash 1985703050, now seen corresponding path program 1 times
[2019-10-13 23:03:26,892 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:26,893 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884417209]
[2019-10-13 23:03:26,893 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:26,893 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:26,894 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:27,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:27,395 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 23:03:27,396 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884417209]
[2019-10-13 23:03:27,396 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:27,397 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2019-10-13 23:03:27,397 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835095970]
[2019-10-13 23:03:27,398 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 6 states
[2019-10-13 23:03:27,399 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:27,399 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2019-10-13 23:03:27,400 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2019-10-13 23:03:27,400 INFO  L87              Difference]: Start difference. First operand 1655 states and 2557 transitions. Second operand 6 states.
[2019-10-13 23:03:30,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:03:30,990 INFO  L93              Difference]: Finished difference Result 5531 states and 8605 transitions.
[2019-10-13 23:03:30,991 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-13 23:03:30,991 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 134
[2019-10-13 23:03:30,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:03:31,022 INFO  L225             Difference]: With dead ends: 5531
[2019-10-13 23:03:31,022 INFO  L226             Difference]: Without dead ends: 3931
[2019-10-13 23:03:31,033 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2019-10-13 23:03:31,038 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3931 states.
[2019-10-13 23:03:31,231 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3897.
[2019-10-13 23:03:31,232 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3897 states.
[2019-10-13 23:03:31,253 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5979 transitions.
[2019-10-13 23:03:31,254 INFO  L78                 Accepts]: Start accepts. Automaton has 3897 states and 5979 transitions. Word has length 134
[2019-10-13 23:03:31,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:03:31,254 INFO  L462      AbstractCegarLoop]: Abstraction has 3897 states and 5979 transitions.
[2019-10-13 23:03:31,254 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2019-10-13 23:03:31,255 INFO  L276                IsEmpty]: Start isEmpty. Operand 3897 states and 5979 transitions.
[2019-10-13 23:03:31,260 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 143
[2019-10-13 23:03:31,260 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:03:31,261 INFO  L380         BasicCegarLoop]: trace histogram [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]
[2019-10-13 23:03:31,261 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:03:31,262 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:03:31,262 INFO  L82        PathProgramCache]: Analyzing trace with hash 1929700843, now seen corresponding path program 1 times
[2019-10-13 23:03:31,262 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:03:31,263 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103043005]
[2019-10-13 23:03:31,263 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:31,263 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:03:31,264 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:03:31,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:03:32,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2019-10-13 23:03:32,409 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103043005]
[2019-10-13 23:03:32,410 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:03:32,410 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28
[2019-10-13 23:03:32,410 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027063874]
[2019-10-13 23:03:32,411 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 28 states
[2019-10-13 23:03:32,411 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:03:32,412 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2019-10-13 23:03:32,412 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=652, Unknown=0, NotChecked=0, Total=756
[2019-10-13 23:03:32,412 INFO  L87              Difference]: Start difference. First operand 3897 states and 5979 transitions. Second operand 28 states.