java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-15 03:08:32,012 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-15 03:08:32,016 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-15 03:08:32,035 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-15 03:08:32,036 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-15 03:08:32,038 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-15 03:08:32,041 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-15 03:08:32,052 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-15 03:08:32,057 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-15 03:08:32,060 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-15 03:08:32,062 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-15 03:08:32,063 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-15 03:08:32,064 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-15 03:08:32,066 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-15 03:08:32,070 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-15 03:08:32,072 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-15 03:08:32,073 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-15 03:08:32,075 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-15 03:08:32,077 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-15 03:08:32,081 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-15 03:08:32,086 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-15 03:08:32,089 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-15 03:08:32,092 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-15 03:08:32,093 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-15 03:08:32,095 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-15 03:08:32,096 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-15 03:08:32,096 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-15 03:08:32,098 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-15 03:08:32,099 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-15 03:08:32,100 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-15 03:08:32,101 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-15 03:08:32,102 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-15 03:08:32,103 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-15 03:08:32,104 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-15 03:08:32,105 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-15 03:08:32,106 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-15 03:08:32,106 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-15 03:08:32,107 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-15 03:08:32,107 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-15 03:08:32,108 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-15 03:08:32,109 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-15 03:08:32,110 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
[2019-10-15 03:08:32,146 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-15 03:08:32,147 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-15 03:08:32,148 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-15 03:08:32,151 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-15 03:08:32,151 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-15 03:08:32,152 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-15 03:08:32,152 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-15 03:08:32,152 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-15 03:08:32,152 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-15 03:08:32,152 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-15 03:08:32,153 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-15 03:08:32,153 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-15 03:08:32,153 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-15 03:08:32,153 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-15 03:08:32,153 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-15 03:08:32,154 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-15 03:08:32,154 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-15 03:08:32,154 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-15 03:08:32,155 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-15 03:08:32,156 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-15 03:08:32,156 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-15 03:08:32,156 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 03:08:32,156 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-15 03:08:32,156 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-15 03:08:32,157 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-15 03:08:32,157 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-15 03:08:32,157 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-15 03:08:32,157 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-15 03:08:32,157 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
[2019-10-15 03:08:32,534 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-15 03:08:32,554 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-15 03:08:32,558 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-15 03:08:32,559 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-15 03:08:32,560 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-15 03:08:32,560 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c
[2019-10-15 03:08:32,644 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ac00c0/fe29cd8acb804c9a98bbbb41035ef850/FLAG7ca4a8901
[2019-10-15 03:08:33,302 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-15 03:08:33,303 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec2_product30.cil.c
[2019-10-15 03:08:33,336 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ac00c0/fe29cd8acb804c9a98bbbb41035ef850/FLAG7ca4a8901
[2019-10-15 03:08:33,528 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e20ac00c0/fe29cd8acb804c9a98bbbb41035ef850
[2019-10-15 03:08:33,540 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-15 03:08:33,541 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-15 03:08:33,542 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-15 03:08:33,543 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-15 03:08:33,549 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-15 03:08:33,550 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:33" (1/1) ...
[2019-10-15 03:08:33,554 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2eaa0706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:33, skipping insertion in model container
[2019-10-15 03:08:33,554 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:08:33" (1/1) ...
[2019-10-15 03:08:33,563 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-15 03:08:33,655 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-15 03:08:34,497 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:08:34,515 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-15 03:08:34,687 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:08:34,856 INFO  L192         MainTranslator]: Completed translation
[2019-10-15 03:08:34,857 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34 WrapperNode
[2019-10-15 03:08:34,857 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-15 03:08:34,860 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-15 03:08:34,860 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-15 03:08:34,860 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-15 03:08:34,887 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:34,888 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:34,996 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:34,997 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:35,088 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:35,125 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:35,138 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (1/1) ...
[2019-10-15 03:08:35,166 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-15 03:08:35,168 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-15 03:08:35,169 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-15 03:08:35,169 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-15 03:08:35,173 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (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
[2019-10-15 03:08:35,247 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-15 03:08:35,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-15 03:08:35,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:08:35,248 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-15 03:08:35,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-15 03:08:35,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-15 03:08:35,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-15 03:08:35,249 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-15 03:08:35,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-15 03:08:35,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-15 03:08:35,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-15 03:08:35,250 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-15 03:08:35,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-15 03:08:35,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-15 03:08:35,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-15 03:08:35,251 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-15 03:08:35,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-15 03:08:35,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-15 03:08:35,252 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-15 03:08:35,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-15 03:08:35,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-15 03:08:35,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-15 03:08:35,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-15 03:08:35,253 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-15 03:08:35,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-15 03:08:35,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-15 03:08:35,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-15 03:08:35,254 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-15 03:08:35,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-15 03:08:35,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-15 03:08:35,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-15 03:08:35,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-15 03:08:35,255 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-15 03:08:35,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-15 03:08:35,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-15 03:08:35,256 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-15 03:08:35,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-15 03:08:35,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-15 03:08:35,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-15 03:08:35,257 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__1
[2019-10-15 03:08:35,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__2
[2019-10-15 03:08:35,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__3
[2019-10-15 03:08:35,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification2_spec__4
[2019-10-15 03:08:35,258 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-15 03:08:35,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-15 03:08:35,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-15 03:08:35,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-15 03:08:35,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-15 03:08:35,259 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-15 03:08:35,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2019-10-15 03:08:35,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-15 03:08:35,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-15 03:08:35,260 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-15 03:08:35,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-15 03:08:35,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-15 03:08:35,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-15 03:08:35,261 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-15 03:08:35,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-15 03:08:35,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-15 03:08:35,262 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-15 03:08:35,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty
[2019-10-15 03:08:35,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-15 03:08:35,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-15 03:08:35,263 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-15 03:08:35,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-10-15 03:08:35,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:08:35,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-15 03:08:35,264 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-15 03:08:35,265 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull
[2019-10-15 03:08:35,265 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-15 03:08:35,265 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull
[2019-10-15 03:08:35,266 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-15 03:08:35,266 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-15 03:08:35,267 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-15 03:08:35,267 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-15 03:08:35,267 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:08:35,268 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-15 03:08:35,268 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-15 03:08:35,268 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-15 03:08:35,269 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-15 03:08:35,269 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-15 03:08:35,271 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-15 03:08:35,271 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-15 03:08:35,271 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-15 03:08:35,271 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-15 03:08:35,271 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-15 03:08:35,272 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-15 03:08:35,273 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-15 03:08:35,273 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-15 03:08:35,274 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-15 03:08:35,274 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-15 03:08:35,274 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-15 03:08:35,275 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-15 03:08:35,275 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-15 03:08:35,276 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-15 03:08:35,276 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-15 03:08:35,276 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-15 03:08:35,276 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-15 03:08:35,276 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-15 03:08:35,277 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-15 03:08:35,278 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-15 03:08:35,278 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__1
[2019-10-15 03:08:35,278 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__4
[2019-10-15 03:08:35,278 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-15 03:08:35,279 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-15 03:08:35,279 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-15 03:08:35,279 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-15 03:08:35,279 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-15 03:08:35,279 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-15 03:08:35,280 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-15 03:08:35,280 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-15 03:08:35,280 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-15 03:08:35,281 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-15 03:08:35,281 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-15 03:08:35,281 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-15 03:08:35,282 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-15 03:08:35,282 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-15 03:08:35,282 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-15 03:08:35,282 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-15 03:08:35,284 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-15 03:08:35,284 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-15 03:08:35,284 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-15 03:08:35,284 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-15 03:08:35,284 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__2
[2019-10-15 03:08:35,285 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification2_spec__3
[2019-10-15 03:08:35,285 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-15 03:08:35,285 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-15 03:08:35,286 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-15 03:08:35,287 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-15 03:08:35,291 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-15 03:08:35,291 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-15 03:08:35,291 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-15 03:08:35,292 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2019-10-15 03:08:35,292 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-15 03:08:35,292 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-15 03:08:35,293 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-15 03:08:35,293 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-15 03:08:35,293 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-15 03:08:35,293 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty
[2019-10-15 03:08:35,300 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-15 03:08:35,300 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-15 03:08:35,300 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-10-15 03:08:35,300 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:08:35,300 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-15 03:08:35,301 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-15 03:08:35,303 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull
[2019-10-15 03:08:35,304 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull
[2019-10-15 03:08:35,304 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-15 03:08:35,304 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-15 03:08:35,305 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-15 03:08:35,305 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-15 03:08:35,305 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-15 03:08:35,305 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-15 03:08:35,306 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-15 03:08:35,306 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-15 03:08:35,306 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-15 03:08:35,306 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-15 03:08:35,306 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-15 03:08:35,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-15 03:08:35,307 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:08:35,307 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:08:35,307 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-15 03:08:35,308 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-15 03:08:41,975 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-15 03:08:41,976 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-15 03:08:41,978 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:41 BoogieIcfgContainer
[2019-10-15 03:08:41,979 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-15 03:08:41,982 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-15 03:08:41,982 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-15 03:08:41,986 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-15 03:08:41,987 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:08:33" (1/3) ...
[2019-10-15 03:08:41,988 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c80768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:41, skipping insertion in model container
[2019-10-15 03:08:41,988 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:08:34" (2/3) ...
[2019-10-15 03:08:41,989 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c80768 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:08:41, skipping insertion in model container
[2019-10-15 03:08:41,990 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:08:41" (3/3) ...
[2019-10-15 03:08:41,993 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c
[2019-10-15 03:08:42,006 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-15 03:08:42,021 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-15 03:08:42,039 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-15 03:08:42,095 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-15 03:08:42,095 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-15 03:08:42,095 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-15 03:08:42,095 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-15 03:08:42,095 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-15 03:08:42,095 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-15 03:08:42,096 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-15 03:08:42,096 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-15 03:08:42,145 INFO  L276                IsEmpty]: Start isEmpty. Operand 589 states.
[2019-10-15 03:08:42,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2019-10-15 03:08:42,159 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:08:42,160 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:08:42,162 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:08:42,170 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:08:42,171 INFO  L82        PathProgramCache]: Analyzing trace with hash -1476435003, now seen corresponding path program 1 times
[2019-10-15 03:08:42,180 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:08:42,181 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659716961]
[2019-10-15 03:08:42,181 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:42,181 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:42,181 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:08:42,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:08:42,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:08:42,809 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659716961]
[2019-10-15 03:08:42,810 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:08:42,810 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2019-10-15 03:08:42,811 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612621982]
[2019-10-15 03:08:42,818 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 2 states
[2019-10-15 03:08:42,819 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:08:42,838 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2019-10-15 03:08:42,839 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2019-10-15 03:08:42,843 INFO  L87              Difference]: Start difference. First operand 589 states. Second operand 2 states.
[2019-10-15 03:08:42,933 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:08:42,933 INFO  L93              Difference]: Finished difference Result 486 states and 720 transitions.
[2019-10-15 03:08:42,934 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2019-10-15 03:08:42,935 INFO  L78                 Accepts]: Start accepts. Automaton has 2 states. Word has length 74
[2019-10-15 03:08:42,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:08:42,975 INFO  L225             Difference]: With dead ends: 486
[2019-10-15 03:08:42,975 INFO  L226             Difference]: Without dead ends: 452
[2019-10-15 03:08:42,985 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
[2019-10-15 03:08:43,017 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 452 states.
[2019-10-15 03:08:43,201 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 452.
[2019-10-15 03:08:43,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 452 states.
[2019-10-15 03:08:43,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 669 transitions.
[2019-10-15 03:08:43,220 INFO  L78                 Accepts]: Start accepts. Automaton has 452 states and 669 transitions. Word has length 74
[2019-10-15 03:08:43,222 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:08:43,222 INFO  L462      AbstractCegarLoop]: Abstraction has 452 states and 669 transitions.
[2019-10-15 03:08:43,222 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 2 states.
[2019-10-15 03:08:43,223 INFO  L276                IsEmpty]: Start isEmpty. Operand 452 states and 669 transitions.
[2019-10-15 03:08:43,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2019-10-15 03:08:43,237 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:08:43,237 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:08:43,238 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:08:43,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:08:43,238 INFO  L82        PathProgramCache]: Analyzing trace with hash 1507814418, now seen corresponding path program 1 times
[2019-10-15 03:08:43,238 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:08:43,239 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153724384]
[2019-10-15 03:08:43,239 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:43,241 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:43,241 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:08:43,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:08:43,727 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:08:43,727 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153724384]
[2019-10-15 03:08:43,728 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:08:43,728 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2019-10-15 03:08:43,729 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273358125]
[2019-10-15 03:08:43,731 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-15 03:08:43,732 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:08:43,733 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-15 03:08:43,733 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2019-10-15 03:08:43,733 INFO  L87              Difference]: Start difference. First operand 452 states and 669 transitions. Second operand 9 states.
[2019-10-15 03:08:52,986 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:08:52,986 INFO  L93              Difference]: Finished difference Result 1239 states and 1873 transitions.
[2019-10-15 03:08:52,990 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2019-10-15 03:08:52,991 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 75
[2019-10-15 03:08:52,992 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:08:53,010 INFO  L225             Difference]: With dead ends: 1239
[2019-10-15 03:08:53,010 INFO  L226             Difference]: Without dead ends: 829
[2019-10-15 03:08:53,034 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462
[2019-10-15 03:08:53,038 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 829 states.
[2019-10-15 03:08:53,155 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 798.
[2019-10-15 03:08:53,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 798 states.
[2019-10-15 03:08:53,165 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1167 transitions.
[2019-10-15 03:08:53,166 INFO  L78                 Accepts]: Start accepts. Automaton has 798 states and 1167 transitions. Word has length 75
[2019-10-15 03:08:53,172 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:08:53,173 INFO  L462      AbstractCegarLoop]: Abstraction has 798 states and 1167 transitions.
[2019-10-15 03:08:53,173 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2019-10-15 03:08:53,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 798 states and 1167 transitions.
[2019-10-15 03:08:53,176 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2019-10-15 03:08:53,176 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:08:53,177 INFO  L380         BasicCegarLoop]: trace histogram [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]
[2019-10-15 03:08:53,177 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:08:53,177 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:08:53,178 INFO  L82        PathProgramCache]: Analyzing trace with hash -801764644, now seen corresponding path program 1 times
[2019-10-15 03:08:53,178 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:08:53,178 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306215105]
[2019-10-15 03:08:53,179 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:53,179 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:53,179 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:08:53,327 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:08:53,474 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-15 03:08:53,475 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306215105]
[2019-10-15 03:08:53,475 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:08:53,475 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-15 03:08:53,475 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836849286]
[2019-10-15 03:08:53,476 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-15 03:08:53,476 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:08:53,476 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-15 03:08:53,477 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:08:53,477 INFO  L87              Difference]: Start difference. First operand 798 states and 1167 transitions. Second operand 5 states.
[2019-10-15 03:08:57,177 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:08:57,177 INFO  L93              Difference]: Finished difference Result 2384 states and 3573 transitions.
[2019-10-15 03:08:57,178 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-15 03:08:57,178 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 77
[2019-10-15 03:08:57,180 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:08:57,197 INFO  L225             Difference]: With dead ends: 2384
[2019-10-15 03:08:57,197 INFO  L226             Difference]: Without dead ends: 1629
[2019-10-15 03:08:57,202 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-10-15 03:08:57,204 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1629 states.
[2019-10-15 03:08:57,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 1533.
[2019-10-15 03:08:57,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1533 states.
[2019-10-15 03:08:57,310 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 2284 transitions.
[2019-10-15 03:08:57,310 INFO  L78                 Accepts]: Start accepts. Automaton has 1533 states and 2284 transitions. Word has length 77
[2019-10-15 03:08:57,311 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:08:57,311 INFO  L462      AbstractCegarLoop]: Abstraction has 1533 states and 2284 transitions.
[2019-10-15 03:08:57,311 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-15 03:08:57,311 INFO  L276                IsEmpty]: Start isEmpty. Operand 1533 states and 2284 transitions.
[2019-10-15 03:08:57,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2019-10-15 03:08:57,314 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:08:57,314 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:08:57,314 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:08:57,314 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:08:57,315 INFO  L82        PathProgramCache]: Analyzing trace with hash -102609970, now seen corresponding path program 1 times
[2019-10-15 03:08:57,315 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:08:57,315 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732022722]
[2019-10-15 03:08:57,315 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:57,316 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:08:57,316 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:08:57,392 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:08:57,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:08:57,511 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732022722]
[2019-10-15 03:08:57,511 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:08:57,511 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-15 03:08:57,512 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720167088]
[2019-10-15 03:08:57,512 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-15 03:08:57,513 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:08:57,513 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-15 03:08:57,513 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-15 03:08:57,513 INFO  L87              Difference]: Start difference. First operand 1533 states and 2284 transitions. Second operand 4 states.
[2019-10-15 03:09:00,425 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:00,425 INFO  L93              Difference]: Finished difference Result 4518 states and 6837 transitions.
[2019-10-15 03:09:00,425 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 03:09:00,425 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 77
[2019-10-15 03:09:00,426 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:00,454 INFO  L225             Difference]: With dead ends: 4518
[2019-10-15 03:09:00,454 INFO  L226             Difference]: Without dead ends: 3029
[2019-10-15 03:09:00,465 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:09:00,470 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3029 states.
[2019-10-15 03:09:00,813 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2912.
[2019-10-15 03:09:00,813 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2912 states.
[2019-10-15 03:09:00,836 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2912 states to 2912 states and 4382 transitions.
[2019-10-15 03:09:00,838 INFO  L78                 Accepts]: Start accepts. Automaton has 2912 states and 4382 transitions. Word has length 77
[2019-10-15 03:09:00,841 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:00,841 INFO  L462      AbstractCegarLoop]: Abstraction has 2912 states and 4382 transitions.
[2019-10-15 03:09:00,841 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-15 03:09:00,841 INFO  L276                IsEmpty]: Start isEmpty. Operand 2912 states and 4382 transitions.
[2019-10-15 03:09:00,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2019-10-15 03:09:00,844 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:00,844 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:09:00,844 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:00,845 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:00,845 INFO  L82        PathProgramCache]: Analyzing trace with hash 1112656436, now seen corresponding path program 1 times
[2019-10-15 03:09:00,845 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:00,846 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935962782]
[2019-10-15 03:09:00,847 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:00,847 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:00,847 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:00,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:01,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:01,062 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935962782]
[2019-10-15 03:09:01,062 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:09:01,062 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-15 03:09:01,062 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707667302]
[2019-10-15 03:09:01,063 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-15 03:09:01,063 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:01,064 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-15 03:09:01,064 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-15 03:09:01,064 INFO  L87              Difference]: Start difference. First operand 2912 states and 4382 transitions. Second operand 4 states.
[2019-10-15 03:09:03,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:03,252 INFO  L93              Difference]: Finished difference Result 8700 states and 13298 transitions.
[2019-10-15 03:09:03,253 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 03:09:03,253 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 78
[2019-10-15 03:09:03,254 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:03,296 INFO  L225             Difference]: With dead ends: 8700
[2019-10-15 03:09:03,297 INFO  L226             Difference]: Without dead ends: 5833
[2019-10-15 03:09:03,315 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:09:03,322 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5833 states.
[2019-10-15 03:09:03,626 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5833 to 5671.
[2019-10-15 03:09:03,626 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5671 states.
[2019-10-15 03:09:03,657 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5671 states to 5671 states and 8616 transitions.
[2019-10-15 03:09:03,659 INFO  L78                 Accepts]: Start accepts. Automaton has 5671 states and 8616 transitions. Word has length 78
[2019-10-15 03:09:03,660 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:03,660 INFO  L462      AbstractCegarLoop]: Abstraction has 5671 states and 8616 transitions.
[2019-10-15 03:09:03,660 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-15 03:09:03,660 INFO  L276                IsEmpty]: Start isEmpty. Operand 5671 states and 8616 transitions.
[2019-10-15 03:09:03,662 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2019-10-15 03:09:03,662 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:03,662 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:09:03,663 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:03,663 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:03,663 INFO  L82        PathProgramCache]: Analyzing trace with hash 131213264, now seen corresponding path program 1 times
[2019-10-15 03:09:03,663 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:03,663 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829169634]
[2019-10-15 03:09:03,664 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:03,664 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:03,664 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:03,724 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:03,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:03,830 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829169634]
[2019-10-15 03:09:03,830 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:09:03,830 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-15 03:09:03,831 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913679978]
[2019-10-15 03:09:03,831 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-15 03:09:03,832 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:03,832 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-15 03:09:03,832 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-15 03:09:03,832 INFO  L87              Difference]: Start difference. First operand 5671 states and 8616 transitions. Second operand 4 states.
[2019-10-15 03:09:06,395 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:06,396 INFO  L93              Difference]: Finished difference Result 17079 states and 26487 transitions.
[2019-10-15 03:09:06,396 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 03:09:06,396 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 79
[2019-10-15 03:09:06,397 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:06,489 INFO  L225             Difference]: With dead ends: 17079
[2019-10-15 03:09:06,489 INFO  L226             Difference]: Without dead ends: 11453
[2019-10-15 03:09:06,523 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:09:06,539 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11453 states.
[2019-10-15 03:09:07,351 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11453 to 11202.
[2019-10-15 03:09:07,351 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11202 states.
[2019-10-15 03:09:07,410 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11202 states to 11202 states and 17242 transitions.
[2019-10-15 03:09:07,413 INFO  L78                 Accepts]: Start accepts. Automaton has 11202 states and 17242 transitions. Word has length 79
[2019-10-15 03:09:07,414 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:07,414 INFO  L462      AbstractCegarLoop]: Abstraction has 11202 states and 17242 transitions.
[2019-10-15 03:09:07,414 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-15 03:09:07,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 11202 states and 17242 transitions.
[2019-10-15 03:09:07,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2019-10-15 03:09:07,419 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:07,420 INFO  L380         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:09:07,420 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:07,420 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:07,420 INFO  L82        PathProgramCache]: Analyzing trace with hash -228750090, now seen corresponding path program 1 times
[2019-10-15 03:09:07,421 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:07,421 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070864510]
[2019-10-15 03:09:07,421 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:07,421 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:07,421 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:07,525 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:07,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:07,644 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070864510]
[2019-10-15 03:09:07,645 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:09:07,645 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-10-15 03:09:07,645 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725054598]
[2019-10-15 03:09:07,647 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-15 03:09:07,647 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:07,647 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-15 03:09:07,648 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2019-10-15 03:09:07,648 INFO  L87              Difference]: Start difference. First operand 11202 states and 17242 transitions. Second operand 4 states.