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_spec3_product30.cil.c


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


This is Ultimate 0.1.24-f4eb214f-m
[2019-10-13 23:05:12,247 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-13 23:05:12,251 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-13 23:05:12,272 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-13 23:05:12,272 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-13 23:05:12,274 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-13 23:05:12,277 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-13 23:05:12,286 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-13 23:05:12,288 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-13 23:05:12,289 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-13 23:05:12,291 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-13 23:05:12,292 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-13 23:05:12,293 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-13 23:05:12,295 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-13 23:05:12,299 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-13 23:05:12,301 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-13 23:05:12,303 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-13 23:05:12,304 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-13 23:05:12,306 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-13 23:05:12,311 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-13 23:05:12,315 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-13 23:05:12,318 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-13 23:05:12,321 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-13 23:05:12,322 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-13 23:05:12,325 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-13 23:05:12,325 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-13 23:05:12,325 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-13 23:05:12,327 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-13 23:05:12,328 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-13 23:05:12,329 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-13 23:05:12,329 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-13 23:05:12,331 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-13 23:05:12,332 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-13 23:05:12,333 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-13 23:05:12,334 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-13 23:05:12,334 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-13 23:05:12,335 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-13 23:05:12,335 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-13 23:05:12,335 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-13 23:05:12,336 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-13 23:05:12,337 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-13 23:05:12,338 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 23:05:12,370 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-13 23:05:12,370 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-13 23:05:12,371 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-13 23:05:12,371 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-13 23:05:12,372 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-13 23:05:12,372 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-13 23:05:12,372 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-13 23:05:12,372 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-13 23:05:12,372 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-13 23:05:12,373 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-13 23:05:12,373 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-13 23:05:12,373 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-13 23:05:12,378 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-13 23:05:12,378 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-13 23:05:12,378 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-13 23:05:12,379 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-13 23:05:12,379 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-13 23:05:12,380 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-13 23:05:12,381 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-13 23:05:12,381 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-13 23:05:12,381 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-13 23:05:12,383 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-13 23:05:12,384 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-13 23:05:12,384 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-13 23:05:12,384 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-13 23:05:12,385 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-13 23:05:12,385 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-13 23:05:12,385 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-13 23:05:12,385 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 23:05:12,652 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-13 23:05:12,665 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-13 23:05:12,669 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-13 23:05:12,670 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-13 23:05:12,671 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-13 23:05:12,672 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c
[2019-10-13 23:05:12,754 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf10d0c94/3cb42cf93be94df8bf9582f62442b0b9/FLAG6f7182cf2
[2019-10-13 23:05:13,428 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-13 23:05:13,429 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product30.cil.c
[2019-10-13 23:05:13,465 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf10d0c94/3cb42cf93be94df8bf9582f62442b0b9/FLAG6f7182cf2
[2019-10-13 23:05:13,604 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf10d0c94/3cb42cf93be94df8bf9582f62442b0b9
[2019-10-13 23:05:13,616 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-13 23:05:13,618 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-13 23:05:13,619 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-13 23:05:13,619 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-13 23:05:13,622 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-13 23:05:13,623 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:13" (1/1) ...
[2019-10-13 23:05:13,626 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@259a0832 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:13, skipping insertion in model container
[2019-10-13 23:05:13,626 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:05:13" (1/1) ...
[2019-10-13 23:05:13,633 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-13 23:05:13,699 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-13 23:05:14,533 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:05:14,551 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-13 23:05:14,670 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-13 23:05:14,739 INFO  L192         MainTranslator]: Completed translation
[2019-10-13 23:05:14,740 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14 WrapperNode
[2019-10-13 23:05:14,740 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-13 23:05:14,741 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-13 23:05:14,741 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-13 23:05:14,742 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-13 23:05:14,762 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,763 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,799 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,799 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,862 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,904 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,922 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (1/1) ...
[2019-10-13 23:05:14,949 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-13 23:05:14,950 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-13 23:05:14,950 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-13 23:05:14,950 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-13 23:05:14,952 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (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 23:05:15,037 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-13 23:05:15,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-13 23:05:15,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:05:15,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-13 23:05:15,038 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-13 23:05:15,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-13 23:05:15,039 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-13 23:05:15,040 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-13 23:05:15,040 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-13 23:05:15,041 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-13 23:05:15,041 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-13 23:05:15,042 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-13 23:05:15,042 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-13 23:05:15,043 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-13 23:05:15,043 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-13 23:05:15,044 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-13 23:05:15,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-13 23:05:15,046 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-13 23:05:15,047 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-13 23:05:15,047 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-13 23:05:15,047 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-13 23:05:15,048 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-13 23:05:15,048 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-13 23:05:15,048 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-13 23:05:15,048 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-13 23:05:15,048 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2019-10-13 23:05:15,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2
[2019-10-13 23:05:15,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-13 23:05:15,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-13 23:05:15,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-13 23:05:15,049 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-13 23:05:15,050 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-13 23:05:15,050 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-13 23:05:15,050 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-13 23:05:15,051 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-13 23:05:15,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-13 23:05:15,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-13 23:05:15,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-13 23:05:15,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-13 23:05:15,052 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-13 23:05:15,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-13 23:05:15,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty
[2019-10-13 23:05:15,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-13 23:05:15,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-13 23:05:15,053 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull
[2019-10-13 23:05:15,054 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-13 23:05:15,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull
[2019-10-13 23:05:15,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-13 23:05:15,055 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-13 23:05:15,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-13 23:05:15,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-13 23:05:15,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:05:15,056 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-13 23:05:15,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-13 23:05:15,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-13 23:05:15,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-13 23:05:15,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-13 23:05:15,057 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-13 23:05:15,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-13 23:05:15,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-13 23:05:15,058 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-13 23:05:15,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-13 23:05:15,059 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-13 23:05:15,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-13 23:05:15,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-13 23:05:15,060 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-13 23:05:15,061 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-13 23:05:15,061 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-13 23:05:15,061 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-13 23:05:15,062 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-13 23:05:15,062 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-13 23:05:15,063 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-13 23:05:15,065 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-13 23:05:15,066 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-13 23:05:15,066 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-13 23:05:15,066 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-13 23:05:15,066 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-13 23:05:15,066 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-13 23:05:15,067 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-13 23:05:15,067 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-13 23:05:15,067 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-13 23:05:15,067 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-13 23:05:15,068 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-13 23:05:15,068 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-13 23:05:15,068 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-13 23:05:15,068 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-13 23:05:15,069 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-13 23:05:15,069 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-13 23:05:15,069 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-13 23:05:15,069 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-13 23:05:15,069 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-13 23:05:15,070 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-13 23:05:15,070 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-13 23:05:15,070 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-13 23:05:15,070 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-13 23:05:15,071 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-13 23:05:15,071 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-13 23:05:15,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2019-10-13 23:05:15,071 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2
[2019-10-13 23:05:15,072 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-13 23:05:15,072 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-13 23:05:15,072 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-13 23:05:15,073 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-13 23:05:15,073 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-13 23:05:15,074 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-13 23:05:15,075 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-13 23:05:15,075 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-13 23:05:15,075 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-13 23:05:15,075 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-13 23:05:15,076 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-13 23:05:15,076 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-13 23:05:15,076 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-13 23:05:15,077 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2019-10-13 23:05:15,078 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-13 23:05:15,081 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-13 23:05:15,082 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-13 23:05:15,082 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-13 23:05:15,082 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty
[2019-10-13 23:05:15,083 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-13 23:05:15,083 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-13 23:05:15,084 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty
[2019-10-13 23:05:15,084 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-13 23:05:15,084 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-13 23:05:15,085 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-13 23:05:15,091 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull
[2019-10-13 23:05:15,092 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull
[2019-10-13 23:05:15,092 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-13 23:05:15,092 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-13 23:05:15,092 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-13 23:05:15,092 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-13 23:05:15,093 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-13 23:05:15,093 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-13 23:05:15,093 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-13 23:05:15,093 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-13 23:05:15,093 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-13 23:05:15,094 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-13 23:05:15,095 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-13 23:05:15,096 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-13 23:05:20,057 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-13 23:05:20,058 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-13 23:05:20,061 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:20 BoogieIcfgContainer
[2019-10-13 23:05:20,061 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-13 23:05:20,062 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-13 23:05:20,062 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-13 23:05:20,067 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-13 23:05:20,067 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:05:13" (1/3) ...
[2019-10-13 23:05:20,068 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddf2f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:20, skipping insertion in model container
[2019-10-13 23:05:20,068 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:05:14" (2/3) ...
[2019-10-13 23:05:20,069 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ddf2f3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:05:20, skipping insertion in model container
[2019-10-13 23:05:20,069 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:05:20" (3/3) ...
[2019-10-13 23:05:20,071 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c
[2019-10-13 23:05:20,082 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-13 23:05:20,093 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-13 23:05:20,106 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-13 23:05:20,155 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-13 23:05:20,156 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-13 23:05:20,156 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-13 23:05:20,157 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-13 23:05:20,157 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-13 23:05:20,157 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-13 23:05:20,157 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-13 23:05:20,157 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-13 23:05:20,202 INFO  L276                IsEmpty]: Start isEmpty. Operand 615 states.
[2019-10-13 23:05:20,217 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2019-10-13 23:05:20,217 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:20,219 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, 1, 1, 1]
[2019-10-13 23:05:20,222 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:20,228 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:20,229 INFO  L82        PathProgramCache]: Analyzing trace with hash -603185997, now seen corresponding path program 1 times
[2019-10-13 23:05:20,240 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:20,240 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023748571]
[2019-10-13 23:05:20,241 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:20,241 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:20,241 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:20,686 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:21,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 23:05:21,048 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023748571]
[2019-10-13 23:05:21,049 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146565046]
[2019-10-13 23:05:21,050 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:21,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:21,709 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2921 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-10-13 23:05:21,724 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 23:05:21,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:05:21,794 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 23:05:21,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 23:05:21,921 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-13 23:05:21,921 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12
[2019-10-13 23:05:21,921 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534772837]
[2019-10-13 23:05:21,927 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 23:05:21,928 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:21,941 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 23:05:21,942 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:05:21,944 INFO  L87              Difference]: Start difference. First operand 615 states. Second operand 3 states.
[2019-10-13 23:05:22,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:22,179 INFO  L93              Difference]: Finished difference Result 1349 states and 2043 transitions.
[2019-10-13 23:05:22,179 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 23:05:22,181 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 80
[2019-10-13 23:05:22,182 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:22,214 INFO  L225             Difference]: With dead ends: 1349
[2019-10-13 23:05:22,214 INFO  L226             Difference]: Without dead ends: 872
[2019-10-13 23:05:22,225 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:05:22,247 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 872 states.
[2019-10-13 23:05:22,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 859.
[2019-10-13 23:05:22,437 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 859 states.
[2019-10-13 23:05:22,449 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1284 transitions.
[2019-10-13 23:05:22,451 INFO  L78                 Accepts]: Start accepts. Automaton has 859 states and 1284 transitions. Word has length 80
[2019-10-13 23:05:22,452 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:22,452 INFO  L462      AbstractCegarLoop]: Abstraction has 859 states and 1284 transitions.
[2019-10-13 23:05:22,453 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 23:05:22,453 INFO  L276                IsEmpty]: Start isEmpty. Operand 859 states and 1284 transitions.
[2019-10-13 23:05:22,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-13 23:05:22,458 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:22,458 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, 1, 1, 1, 1]
[2019-10-13 23:05:22,663 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:22,664 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:22,664 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:22,664 INFO  L82        PathProgramCache]: Analyzing trace with hash 877056551, now seen corresponding path program 1 times
[2019-10-13 23:05:22,665 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:22,665 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905204502]
[2019-10-13 23:05:22,666 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:22,666 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:22,666 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:22,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:23,000 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 23:05:23,001 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905204502]
[2019-10-13 23:05:23,001 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:05:23,002 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2019-10-13 23:05:23,006 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204464547]
[2019-10-13 23:05:23,007 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-13 23:05:23,008 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:23,008 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-13 23:05:23,008 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2019-10-13 23:05:23,009 INFO  L87              Difference]: Start difference. First operand 859 states and 1284 transitions. Second operand 10 states.
[2019-10-13 23:05:23,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:23,957 INFO  L93              Difference]: Finished difference Result 1697 states and 2561 transitions.
[2019-10-13 23:05:23,957 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 23:05:23,958 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 81
[2019-10-13 23:05:23,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:23,978 INFO  L225             Difference]: With dead ends: 1697
[2019-10-13 23:05:23,978 INFO  L226             Difference]: Without dead ends: 1694
[2019-10-13 23:05:23,983 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156
[2019-10-13 23:05:23,989 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1694 states.
[2019-10-13 23:05:24,108 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1658.
[2019-10-13 23:05:24,108 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1658 states.
[2019-10-13 23:05:24,127 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1658 states to 1658 states and 2517 transitions.
[2019-10-13 23:05:24,128 INFO  L78                 Accepts]: Start accepts. Automaton has 1658 states and 2517 transitions. Word has length 81
[2019-10-13 23:05:24,132 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:24,133 INFO  L462      AbstractCegarLoop]: Abstraction has 1658 states and 2517 transitions.
[2019-10-13 23:05:24,133 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-10-13 23:05:24,133 INFO  L276                IsEmpty]: Start isEmpty. Operand 1658 states and 2517 transitions.
[2019-10-13 23:05:24,145 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2019-10-13 23:05:24,145 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:24,146 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, 1, 1, 1, 1, 1]
[2019-10-13 23:05:24,146 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:24,146 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:24,146 INFO  L82        PathProgramCache]: Analyzing trace with hash 1476602668, now seen corresponding path program 1 times
[2019-10-13 23:05:24,146 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:24,147 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147704378]
[2019-10-13 23:05:24,147 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:24,147 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:24,147 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:24,241 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:24,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 23:05:24,341 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147704378]
[2019-10-13 23:05:24,341 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:05:24,342 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-13 23:05:24,342 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208428137]
[2019-10-13 23:05:24,342 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 23:05:24,343 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:24,343 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 23:05:24,343 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 23:05:24,343 INFO  L87              Difference]: Start difference. First operand 1658 states and 2517 transitions. Second operand 3 states.
[2019-10-13 23:05:24,632 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:24,632 INFO  L93              Difference]: Finished difference Result 4047 states and 6251 transitions.
[2019-10-13 23:05:24,633 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 23:05:24,633 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 82
[2019-10-13 23:05:24,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:24,650 INFO  L225             Difference]: With dead ends: 4047
[2019-10-13 23:05:24,650 INFO  L226             Difference]: Without dead ends: 2420
[2019-10-13 23:05:24,658 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-13 23:05:24,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2420 states.
[2019-10-13 23:05:24,763 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2362.
[2019-10-13 23:05:24,763 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2362 states.
[2019-10-13 23:05:24,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2362 states to 2362 states and 3607 transitions.
[2019-10-13 23:05:24,782 INFO  L78                 Accepts]: Start accepts. Automaton has 2362 states and 3607 transitions. Word has length 82
[2019-10-13 23:05:24,782 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:24,782 INFO  L462      AbstractCegarLoop]: Abstraction has 2362 states and 3607 transitions.
[2019-10-13 23:05:24,782 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 23:05:24,783 INFO  L276                IsEmpty]: Start isEmpty. Operand 2362 states and 3607 transitions.
[2019-10-13 23:05:24,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-13 23:05:24,784 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:24,784 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, 1, 1, 1, 1]
[2019-10-13 23:05:24,785 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:24,785 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:24,785 INFO  L82        PathProgramCache]: Analyzing trace with hash -1461243360, now seen corresponding path program 1 times
[2019-10-13 23:05:24,785 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:24,786 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771071628]
[2019-10-13 23:05:24,786 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:24,786 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:24,786 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:24,847 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:24,993 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 23:05:24,994 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771071628]
[2019-10-13 23:05:24,994 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [107396161]
[2019-10-13 23:05:24,994 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:25,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:25,501 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-10-13 23:05:25,510 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 23:05:25,535 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:05:25,535 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 23:05:25,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 23:05:25,626 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-13 23:05:25,627 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12
[2019-10-13 23:05:25,628 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984802993]
[2019-10-13 23:05:25,628 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-13 23:05:25,629 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:25,629 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-13 23:05:25,629 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:05:25,629 INFO  L87              Difference]: Start difference. First operand 2362 states and 3607 transitions. Second operand 3 states.
[2019-10-13 23:05:25,910 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:25,910 INFO  L93              Difference]: Finished difference Result 5471 states and 8427 transitions.
[2019-10-13 23:05:25,912 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-13 23:05:25,912 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 81
[2019-10-13 23:05:25,915 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:25,946 INFO  L225             Difference]: With dead ends: 5471
[2019-10-13 23:05:25,946 INFO  L226             Difference]: Without dead ends: 3140
[2019-10-13 23:05:25,961 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-13 23:05:25,965 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3140 states.
[2019-10-13 23:05:26,120 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3140 to 3082.
[2019-10-13 23:05:26,120 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3082 states.
[2019-10-13 23:05:26,135 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3082 states to 3082 states and 4711 transitions.
[2019-10-13 23:05:26,136 INFO  L78                 Accepts]: Start accepts. Automaton has 3082 states and 4711 transitions. Word has length 81
[2019-10-13 23:05:26,136 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:26,137 INFO  L462      AbstractCegarLoop]: Abstraction has 3082 states and 4711 transitions.
[2019-10-13 23:05:26,137 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-13 23:05:26,137 INFO  L276                IsEmpty]: Start isEmpty. Operand 3082 states and 4711 transitions.
[2019-10-13 23:05:26,142 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2019-10-13 23:05:26,143 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:26,143 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, 1, 1, 1, 1, 1]
[2019-10-13 23:05:26,350 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:26,354 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:26,355 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:26,355 INFO  L82        PathProgramCache]: Analyzing trace with hash -612635584, now seen corresponding path program 1 times
[2019-10-13 23:05:26,355 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:26,355 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695223476]
[2019-10-13 23:05:26,355 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:26,355 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:26,355 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:26,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:26,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-13 23:05:26,538 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695223476]
[2019-10-13 23:05:26,538 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [825987918]
[2019-10-13 23:05:26,539 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:27,199 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:27,208 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-13 23:05:27,215 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 23:05:27,326 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-13 23:05:27,327 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 23:05:27,481 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 23:05:27,643 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2019-10-13 23:05:27,644 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-13 23:05:27,644 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20
[2019-10-13 23:05:27,644 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639298963]
[2019-10-13 23:05:27,645 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-13 23:05:27,645 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:27,645 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-13 23:05:27,646 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380
[2019-10-13 23:05:27,646 INFO  L87              Difference]: Start difference. First operand 3082 states and 4711 transitions. Second operand 11 states.
[2019-10-13 23:05:32,355 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:32,356 INFO  L93              Difference]: Finished difference Result 8682 states and 13465 transitions.
[2019-10-13 23:05:32,356 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-13 23:05:32,356 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 82
[2019-10-13 23:05:32,357 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:32,398 INFO  L225             Difference]: With dead ends: 8682
[2019-10-13 23:05:32,398 INFO  L226             Difference]: Without dead ends: 5631
[2019-10-13 23:05:32,419 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506
[2019-10-13 23:05:32,427 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5631 states.
[2019-10-13 23:05:32,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5631 to 5607.
[2019-10-13 23:05:32,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5607 states.
[2019-10-13 23:05:32,685 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5607 states to 5607 states and 8349 transitions.
[2019-10-13 23:05:32,687 INFO  L78                 Accepts]: Start accepts. Automaton has 5607 states and 8349 transitions. Word has length 82
[2019-10-13 23:05:32,689 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:32,689 INFO  L462      AbstractCegarLoop]: Abstraction has 5607 states and 8349 transitions.
[2019-10-13 23:05:32,689 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-13 23:05:32,689 INFO  L276                IsEmpty]: Start isEmpty. Operand 5607 states and 8349 transitions.
[2019-10-13 23:05:32,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2019-10-13 23:05:32,699 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:32,699 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-13 23:05:32,907 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:32,908 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:32,908 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:32,908 INFO  L82        PathProgramCache]: Analyzing trace with hash 228826815, now seen corresponding path program 1 times
[2019-10-13 23:05:32,908 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:32,908 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702135063]
[2019-10-13 23:05:32,908 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:32,909 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:32,909 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:33,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:33,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2019-10-13 23:05:33,194 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702135063]
[2019-10-13 23:05:33,194 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-13 23:05:33,194 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2019-10-13 23:05:33,194 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000293746]
[2019-10-13 23:05:33,195 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-13 23:05:33,195 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:33,195 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-13 23:05:33,196 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2019-10-13 23:05:33,196 INFO  L87              Difference]: Start difference. First operand 5607 states and 8349 transitions. Second operand 10 states.
[2019-10-13 23:05:34,573 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-13 23:05:34,574 INFO  L93              Difference]: Finished difference Result 12464 states and 18612 transitions.
[2019-10-13 23:05:34,574 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-13 23:05:34,575 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 127
[2019-10-13 23:05:34,575 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-13 23:05:34,647 INFO  L225             Difference]: With dead ends: 12464
[2019-10-13 23:05:34,647 INFO  L226             Difference]: Without dead ends: 6888
[2019-10-13 23:05:34,692 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240
[2019-10-13 23:05:34,704 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6888 states.
[2019-10-13 23:05:35,101 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6860.
[2019-10-13 23:05:35,101 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6860 states.
[2019-10-13 23:05:35,132 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6860 states to 6860 states and 10157 transitions.
[2019-10-13 23:05:35,134 INFO  L78                 Accepts]: Start accepts. Automaton has 6860 states and 10157 transitions. Word has length 127
[2019-10-13 23:05:35,135 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-13 23:05:35,135 INFO  L462      AbstractCegarLoop]: Abstraction has 6860 states and 10157 transitions.
[2019-10-13 23:05:35,135 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-10-13 23:05:35,135 INFO  L276                IsEmpty]: Start isEmpty. Operand 6860 states and 10157 transitions.
[2019-10-13 23:05:35,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 197
[2019-10-13 23:05:35,141 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-13 23:05:35,142 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-10-13 23:05:35,142 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-13 23:05:35,142 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-13 23:05:35,143 INFO  L82        PathProgramCache]: Analyzing trace with hash -1448581236, now seen corresponding path program 1 times
[2019-10-13 23:05:35,143 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-13 23:05:35,143 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036964383]
[2019-10-13 23:05:35,143 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:35,143 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-13 23:05:35,143 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-13 23:05:35,217 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:35,505 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2019-10-13 23:05:35,506 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036964383]
[2019-10-13 23:05:35,506 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580250081]
[2019-10-13 23:05:35,506 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-13 23:05:36,258 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-13 23:05:36,274 INFO  L256         TraceCheckSpWp]: Trace formula consists of 3852 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-10-13 23:05:36,293 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-13 23:05:36,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2019-10-13 23:05:36,564 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-13 23:05:36,993 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-13 23:05:37,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 93 backedges. 18 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2019-10-13 23:05:37,183 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2019-10-13 23:05:37,184 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25
[2019-10-13 23:05:37,185 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125988858]
[2019-10-13 23:05:37,186 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-13 23:05:37,187 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-13 23:05:37,187 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-13 23:05:37,188 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600
[2019-10-13 23:05:37,188 INFO  L87              Difference]: Start difference. First operand 6860 states and 10157 transitions. Second operand 9 states.