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_product22.cil.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-15 03:09:11,933 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-15 03:09:11,936 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-15 03:09:11,957 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-15 03:09:11,957 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-15 03:09:11,960 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-15 03:09:11,962 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-15 03:09:11,975 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-15 03:09:11,977 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-15 03:09:11,978 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-15 03:09:11,980 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-15 03:09:11,981 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-15 03:09:11,982 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-15 03:09:11,983 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-15 03:09:11,987 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-15 03:09:11,989 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-15 03:09:11,991 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-15 03:09:11,994 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-15 03:09:11,996 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-15 03:09:12,001 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-15 03:09:12,006 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-15 03:09:12,007 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-15 03:09:12,011 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-15 03:09:12,012 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-15 03:09:12,015 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-15 03:09:12,016 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-15 03:09:12,016 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-15 03:09:12,018 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-15 03:09:12,019 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-15 03:09:12,021 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-15 03:09:12,021 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-15 03:09:12,022 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-15 03:09:12,023 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-15 03:09:12,023 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-15 03:09:12,025 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-15 03:09:12,025 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-15 03:09:12,026 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-15 03:09:12,026 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-15 03:09:12,027 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-15 03:09:12,029 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-15 03:09:12,030 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-15 03:09:12,031 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 03:09:12,051 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-15 03:09:12,052 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-15 03:09:12,054 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-15 03:09:12,054 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-15 03:09:12,054 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-15 03:09:12,055 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-15 03:09:12,055 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-15 03:09:12,055 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-15 03:09:12,055 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-15 03:09:12,055 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-15 03:09:12,057 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-15 03:09:12,057 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-15 03:09:12,057 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-15 03:09:12,058 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-15 03:09:12,058 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-15 03:09:12,058 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-15 03:09:12,058 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-15 03:09:12,058 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-15 03:09:12,059 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-15 03:09:12,059 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-15 03:09:12,059 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-15 03:09:12,059 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 03:09:12,059 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-15 03:09:12,060 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-15 03:09:12,060 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-15 03:09:12,060 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-15 03:09:12,060 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-15 03:09:12,060 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-15 03:09:12,060 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 03:09:12,396 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-15 03:09:12,416 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-15 03:09:12,419 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-15 03:09:12,421 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-15 03:09:12,421 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-15 03:09:12,422 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c
[2019-10-15 03:09:12,491 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcc8d53f/e67ec092851e4a35921343ad3ffab25a/FLAG5ffced353
[2019-10-15 03:09:13,221 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-15 03:09:13,222 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec3_product22.cil.c
[2019-10-15 03:09:13,258 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcc8d53f/e67ec092851e4a35921343ad3ffab25a/FLAG5ffced353
[2019-10-15 03:09:13,330 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bcc8d53f/e67ec092851e4a35921343ad3ffab25a
[2019-10-15 03:09:13,343 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-15 03:09:13,344 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-15 03:09:13,346 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-15 03:09:13,346 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-15 03:09:13,350 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-15 03:09:13,351 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:13" (1/1) ...
[2019-10-15 03:09:13,355 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@580da5e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:13, skipping insertion in model container
[2019-10-15 03:09:13,355 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:09:13" (1/1) ...
[2019-10-15 03:09:13,364 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-15 03:09:13,464 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-15 03:09:14,403 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:09:14,426 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-15 03:09:14,529 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:09:14,612 INFO  L192         MainTranslator]: Completed translation
[2019-10-15 03:09:14,612 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14 WrapperNode
[2019-10-15 03:09:14,613 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-15 03:09:14,614 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-15 03:09:14,614 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-15 03:09:14,614 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-15 03:09:14,628 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,628 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,680 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,680 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,778 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,807 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,818 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (1/1) ...
[2019-10-15 03:09:14,848 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-15 03:09:14,849 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-15 03:09:14,849 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-15 03:09:14,850 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-15 03:09:14,856 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (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
[2019-10-15 03:09:14,949 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-15 03:09:14,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-15 03:09:14,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:09:14,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-15 03:09:14,950 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-15 03:09:14,951 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-15 03:09:14,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-15 03:09:14,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-15 03:09:14,952 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:09:14,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-15 03:09:14,953 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-15 03:09:14,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-15 03:09:14,954 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-15 03:09:14,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-15 03:09:14,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-15 03:09:14,955 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-15 03:09:14,957 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__1
[2019-10-15 03:09:14,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification3_spec__2
[2019-10-15 03:09:14,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-15 03:09:14,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-15 03:09:14,958 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-15 03:09:14,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-15 03:09:14,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-15 03:09:14,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-15 03:09:14,959 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-15 03:09:14,960 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-15 03:09:14,960 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-15 03:09:14,960 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-15 03:09:14,960 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-15 03:09:14,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-15 03:09:14,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-15 03:09:14,961 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-15 03:09:14,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-15 03:09:14,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-15 03:09:14,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-15 03:09:14,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-15 03:09:14,962 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-15 03:09:14,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-15 03:09:14,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-15 03:09:14,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-15 03:09:14,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-15 03:09:14,963 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-15 03:09:14,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-15 03:09:14,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-15 03:09:14,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-15 03:09:14,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-15 03:09:14,964 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-15 03:09:14,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-15 03:09:14,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-15 03:09:14,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-15 03:09:14,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-10-15 03:09:14,965 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-15 03:09:14,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-15 03:09:14,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-15 03:09:14,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-15 03:09:14,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-15 03:09:14,966 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-15 03:09:14,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-15 03:09:14,967 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-15 03:09:14,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-15 03:09:14,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-15 03:09:14,968 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-15 03:09:14,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-15 03:09:14,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight
[2019-10-15 03:09:14,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-15 03:09:14,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-15 03:09:14,969 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-15 03:09:14,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-15 03:09:14,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:09:14,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-15 03:09:14,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-15 03:09:14,970 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull
[2019-10-15 03:09:14,971 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-15 03:09:14,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState__wrappee__twothirdsfull
[2019-10-15 03:09:14,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-15 03:09:14,972 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-15 03:09:14,973 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-15 03:09:14,974 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-15 03:09:14,974 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-15 03:09:14,974 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-15 03:09:14,974 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-15 03:09:14,975 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-15 03:09:14,976 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-15 03:09:14,976 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-15 03:09:14,976 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-15 03:09:14,976 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-15 03:09:14,977 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-15 03:09:14,978 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-15 03:09:14,978 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-15 03:09:14,978 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-15 03:09:14,978 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-15 03:09:14,979 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-15 03:09:14,979 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-15 03:09:14,979 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-15 03:09:14,979 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-15 03:09:14,980 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-15 03:09:14,980 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-15 03:09:14,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-15 03:09:14,980 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:09:14,980 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:09:14,981 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-15 03:09:14,981 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-15 03:09:14,981 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-15 03:09:14,981 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-15 03:09:14,982 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-15 03:09:14,982 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-15 03:09:14,982 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-15 03:09:14,982 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-15 03:09:14,982 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-15 03:09:14,983 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-15 03:09:14,983 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-15 03:09:14,983 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-15 03:09:14,983 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__1
[2019-10-15 03:09:14,983 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification3_spec__2
[2019-10-15 03:09:14,984 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-15 03:09:14,984 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-15 03:09:14,984 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-15 03:09:14,985 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-15 03:09:14,985 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-15 03:09:14,985 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-15 03:09:14,986 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-15 03:09:14,986 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-15 03:09:14,986 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-15 03:09:14,986 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-15 03:09:14,987 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-15 03:09:14,988 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-15 03:09:14,989 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-15 03:09:14,989 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-15 03:09:14,990 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-15 03:09:14,993 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-15 03:09:14,994 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-15 03:09:14,995 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-15 03:09:14,995 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-15 03:09:14,996 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-15 03:09:14,996 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-15 03:09:14,996 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-15 03:09:14,996 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-15 03:09:14,996 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-15 03:09:14,997 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-15 03:09:15,003 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-15 03:09:15,004 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-15 03:09:15,004 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-15 03:09:15,005 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-15 03:09:15,005 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight
[2019-10-15 03:09:15,006 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull
[2019-10-15 03:09:15,007 INFO  L130     BoogieDeclarations]: Found specification of procedure printState__wrappee__twothirdsfull
[2019-10-15 03:09:15,008 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-15 03:09:15,008 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-15 03:09:15,008 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-15 03:09:15,008 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-15 03:09:21,727 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-15 03:09:21,727 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-15 03:09:21,729 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:21 BoogieIcfgContainer
[2019-10-15 03:09:21,730 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-15 03:09:21,731 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-15 03:09:21,731 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-15 03:09:21,735 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-15 03:09:21,735 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:09:13" (1/3) ...
[2019-10-15 03:09:21,736 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c840501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:21, skipping insertion in model container
[2019-10-15 03:09:21,736 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:09:14" (2/3) ...
[2019-10-15 03:09:21,737 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c840501 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:09:21, skipping insertion in model container
[2019-10-15 03:09:21,737 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:09:21" (3/3) ...
[2019-10-15 03:09:21,739 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec3_product22.cil.c
[2019-10-15 03:09:21,754 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-15 03:09:21,768 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-15 03:09:21,783 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-15 03:09:21,823 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-15 03:09:21,823 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-15 03:09:21,823 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-15 03:09:21,823 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-15 03:09:21,824 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-15 03:09:21,824 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-15 03:09:21,824 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-15 03:09:21,824 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-15 03:09:21,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 608 states.
[2019-10-15 03:09:21,875 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-15 03:09:21,875 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:21,876 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]
[2019-10-15 03:09:21,879 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:21,885 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:21,885 INFO  L82        PathProgramCache]: Analyzing trace with hash 1873355243, now seen corresponding path program 1 times
[2019-10-15 03:09:21,895 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:21,895 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876751465]
[2019-10-15 03:09:21,895 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:21,896 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:21,896 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:22,317 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:22,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:09:22,815 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876751465]
[2019-10-15 03:09:22,816 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926264812]
[2019-10-15 03:09:22,816 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
[2019-10-15 03:09:23,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:23,551 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2933 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-10-15 03:09:23,569 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:09:23,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:23,703 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:09:24,010 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 03:09:24,011 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-15 03:09:24,012 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 13
[2019-10-15 03:09:24,012 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187029593]
[2019-10-15 03:09:24,021 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 4 states
[2019-10-15 03:09:24,022 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:24,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2019-10-15 03:09:24,048 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156
[2019-10-15 03:09:24,052 INFO  L87              Difference]: Start difference. First operand 608 states. Second operand 4 states.
[2019-10-15 03:09:26,370 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:26,371 INFO  L93              Difference]: Finished difference Result 1724 states and 2647 transitions.
[2019-10-15 03:09:26,371 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-10-15 03:09:26,373 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 81
[2019-10-15 03:09:26,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:26,409 INFO  L225             Difference]: With dead ends: 1724
[2019-10-15 03:09:26,409 INFO  L226             Difference]: Without dead ends: 1244
[2019-10-15 03:09:26,422 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156
[2019-10-15 03:09:26,449 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1244 states.
[2019-10-15 03:09:26,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1244 to 1203.
[2019-10-15 03:09:26,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1203 states.
[2019-10-15 03:09:26,636 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1823 transitions.
[2019-10-15 03:09:26,640 INFO  L78                 Accepts]: Start accepts. Automaton has 1203 states and 1823 transitions. Word has length 81
[2019-10-15 03:09:26,644 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:26,645 INFO  L462      AbstractCegarLoop]: Abstraction has 1203 states and 1823 transitions.
[2019-10-15 03:09:26,645 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2019-10-15 03:09:26,647 INFO  L276                IsEmpty]: Start isEmpty. Operand 1203 states and 1823 transitions.
[2019-10-15 03:09:26,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-15 03:09:26,678 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:26,678 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]
[2019-10-15 03:09:26,891 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:09:26,891 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:26,891 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:26,892 INFO  L82        PathProgramCache]: Analyzing trace with hash -553101953, now seen corresponding path program 1 times
[2019-10-15 03:09:26,892 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:26,892 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943075018]
[2019-10-15 03:09:26,892 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:26,893 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:26,893 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:26,983 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:27,217 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:09:27,217 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943075018]
[2019-10-15 03:09:27,217 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:09:27,218 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2019-10-15 03:09:27,218 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068566077]
[2019-10-15 03:09:27,221 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 10 states
[2019-10-15 03:09:27,223 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:27,223 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2019-10-15 03:09:27,224 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90
[2019-10-15 03:09:27,224 INFO  L87              Difference]: Start difference. First operand 1203 states and 1823 transitions. Second operand 10 states.
[2019-10-15 03:09:28,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:28,539 INFO  L93              Difference]: Finished difference Result 2380 states and 3639 transitions.
[2019-10-15 03:09:28,539 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2019-10-15 03:09:28,539 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 81
[2019-10-15 03:09:28,540 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:28,567 INFO  L225             Difference]: With dead ends: 2380
[2019-10-15 03:09:28,568 INFO  L226             Difference]: Without dead ends: 2377
[2019-10-15 03:09:28,571 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
[2019-10-15 03:09:28,575 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2377 states.
[2019-10-15 03:09:28,710 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2377 to 2336.
[2019-10-15 03:09:28,713 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2336 states.
[2019-10-15 03:09:28,734 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3587 transitions.
[2019-10-15 03:09:28,736 INFO  L78                 Accepts]: Start accepts. Automaton has 2336 states and 3587 transitions. Word has length 81
[2019-10-15 03:09:28,737 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:28,737 INFO  L462      AbstractCegarLoop]: Abstraction has 2336 states and 3587 transitions.
[2019-10-15 03:09:28,738 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2019-10-15 03:09:28,740 INFO  L276                IsEmpty]: Start isEmpty. Operand 2336 states and 3587 transitions.
[2019-10-15 03:09:28,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2019-10-15 03:09:28,748 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:28,748 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]
[2019-10-15 03:09:28,749 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:28,749 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:28,749 INFO  L82        PathProgramCache]: Analyzing trace with hash 1465743899, now seen corresponding path program 1 times
[2019-10-15 03:09:28,749 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:28,750 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3547636]
[2019-10-15 03:09:28,750 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:28,751 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:28,751 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:28,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:28,986 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 03:09:28,987 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3547636]
[2019-10-15 03:09:28,987 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:09:28,988 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-10-15 03:09:28,988 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011134204]
[2019-10-15 03:09:28,990 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-15 03:09:28,990 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:28,990 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-15 03:09:28,991 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-10-15 03:09:28,991 INFO  L87              Difference]: Start difference. First operand 2336 states and 3587 transitions. Second operand 3 states.
[2019-10-15 03:09:29,225 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:29,225 INFO  L93              Difference]: Finished difference Result 5389 states and 8389 transitions.
[2019-10-15 03:09:29,225 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-15 03:09:29,226 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 82
[2019-10-15 03:09:29,226 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:29,253 INFO  L225             Difference]: With dead ends: 5389
[2019-10-15 03:09:29,253 INFO  L226             Difference]: Without dead ends: 3084
[2019-10-15 03:09:29,270 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
[2019-10-15 03:09:29,274 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 3084 states.
[2019-10-15 03:09:29,473 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 3084 to 3026.
[2019-10-15 03:09:29,473 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 3026 states.
[2019-10-15 03:09:29,506 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4663 transitions.
[2019-10-15 03:09:29,509 INFO  L78                 Accepts]: Start accepts. Automaton has 3026 states and 4663 transitions. Word has length 82
[2019-10-15 03:09:29,510 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:29,510 INFO  L462      AbstractCegarLoop]: Abstraction has 3026 states and 4663 transitions.
[2019-10-15 03:09:29,510 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-15 03:09:29,510 INFO  L276                IsEmpty]: Start isEmpty. Operand 3026 states and 4663 transitions.
[2019-10-15 03:09:29,515 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2019-10-15 03:09:29,515 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:29,516 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]
[2019-10-15 03:09:29,516 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:29,516 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:29,517 INFO  L82        PathProgramCache]: Analyzing trace with hash -623494353, now seen corresponding path program 1 times
[2019-10-15 03:09:29,517 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:29,517 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62114733]
[2019-10-15 03:09:29,518 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:29,518 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:29,518 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:29,619 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:30,154 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:09:30,158 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62114733]
[2019-10-15 03:09:30,159 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50838078]
[2019-10-15 03:09:30,159 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
[2019-10-15 03:09:30,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:30,701 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2934 conjuncts, 11 conjunts are in the unsatisfiable core
[2019-10-15 03:09:30,718 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:09:30,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:30,892 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:09:31,159 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-15 03:09:31,475 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 03:09:31,475 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-15 03:09:31,476 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [11] total 20
[2019-10-15 03:09:31,476 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402936218]
[2019-10-15 03:09:31,477 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 11 states
[2019-10-15 03:09:31,478 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:31,478 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2019-10-15 03:09:31,478 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380
[2019-10-15 03:09:31,479 INFO  L87              Difference]: Start difference. First operand 3026 states and 4663 transitions. Second operand 11 states.
[2019-10-15 03:09:37,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:37,219 INFO  L93              Difference]: Finished difference Result 8570 states and 13397 transitions.
[2019-10-15 03:09:37,219 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-15 03:09:37,219 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 82
[2019-10-15 03:09:37,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:37,264 INFO  L225             Difference]: With dead ends: 8570
[2019-10-15 03:09:37,264 INFO  L226             Difference]: Without dead ends: 5575
[2019-10-15 03:09:37,288 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506
[2019-10-15 03:09:37,297 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5575 states.
[2019-10-15 03:09:37,528 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5575 to 5548.
[2019-10-15 03:09:37,528 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5548 states.
[2019-10-15 03:09:37,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5548 states to 5548 states and 8327 transitions.
[2019-10-15 03:09:37,562 INFO  L78                 Accepts]: Start accepts. Automaton has 5548 states and 8327 transitions. Word has length 82
[2019-10-15 03:09:37,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:37,632 INFO  L462      AbstractCegarLoop]: Abstraction has 5548 states and 8327 transitions.
[2019-10-15 03:09:37,632 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2019-10-15 03:09:37,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 5548 states and 8327 transitions.
[2019-10-15 03:09:37,637 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2019-10-15 03:09:37,638 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:37,638 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]
[2019-10-15 03:09:37,839 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:09:37,839 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:37,841 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:37,842 INFO  L82        PathProgramCache]: Analyzing trace with hash -1504598561, now seen corresponding path program 1 times
[2019-10-15 03:09:37,842 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:37,842 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291858943]
[2019-10-15 03:09:37,843 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:37,843 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:37,843 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:37,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:38,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2019-10-15 03:09:38,140 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291858943]
[2019-10-15 03:09:38,140 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1148078147]
[2019-10-15 03:09:38,140 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
[2019-10-15 03:09:38,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:38,699 INFO  L256         TraceCheckSpWp]: Trace formula consists of 2922 conjuncts, 2 conjunts are in the unsatisfiable core
[2019-10-15 03:09:38,704 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:09:38,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-10-15 03:09:38,729 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:09:38,878 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 03:09:38,879 INFO  L223   tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2019-10-15 03:09:38,879 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [11] total 12
[2019-10-15 03:09:38,879 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784229930]
[2019-10-15 03:09:38,881 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 3 states
[2019-10-15 03:09:38,881 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:38,882 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2019-10-15 03:09:38,882 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-15 03:09:38,883 INFO  L87              Difference]: Start difference. First operand 5548 states and 8327 transitions. Second operand 3 states.
[2019-10-15 03:09:39,131 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:09:39,131 INFO  L93              Difference]: Finished difference Result 12149 states and 18381 transitions.
[2019-10-15 03:09:39,132 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-10-15 03:09:39,132 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 81
[2019-10-15 03:09:39,133 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:09:39,188 INFO  L225             Difference]: With dead ends: 12149
[2019-10-15 03:09:39,188 INFO  L226             Difference]: Without dead ends: 6632
[2019-10-15 03:09:39,219 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 164 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132
[2019-10-15 03:09:39,227 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 6632 states.
[2019-10-15 03:09:40,223 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 6632 to 5502.
[2019-10-15 03:09:40,224 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5502 states.
[2019-10-15 03:09:40,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 8244 transitions.
[2019-10-15 03:09:40,253 INFO  L78                 Accepts]: Start accepts. Automaton has 5502 states and 8244 transitions. Word has length 81
[2019-10-15 03:09:40,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:09:40,253 INFO  L462      AbstractCegarLoop]: Abstraction has 5502 states and 8244 transitions.
[2019-10-15 03:09:40,253 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2019-10-15 03:09:40,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 5502 states and 8244 transitions.
[2019-10-15 03:09:40,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 196
[2019-10-15 03:09:40,259 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:09:40,260 INFO  L380         BasicCegarLoop]: trace histogram [4, 4, 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, 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]
[2019-10-15 03:09:40,461 WARN  L499      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2019-10-15 03:09:40,461 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:09:40,461 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:09:40,462 INFO  L82        PathProgramCache]: Analyzing trace with hash -663081441, now seen corresponding path program 1 times
[2019-10-15 03:09:40,462 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:09:40,462 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576597206]
[2019-10-15 03:09:40,462 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:40,463 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:09:40,463 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:09:40,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:40,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2019-10-15 03:09:40,807 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576597206]
[2019-10-15 03:09:40,807 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150326131]
[2019-10-15 03:09:40,807 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
[2019-10-15 03:09:41,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:09:41,530 INFO  L256         TraceCheckSpWp]: Trace formula consists of 3853 conjuncts, 10 conjunts are in the unsatisfiable core
[2019-10-15 03:09:41,540 INFO  L279         TraceCheckSpWp]: Computing forward predicates...
[2019-10-15 03:09:41,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked.
[2019-10-15 03:09:41,790 INFO  L321         TraceCheckSpWp]: Computing backward predicates...
[2019-10-15 03:09:42,241 INFO  L319       QuantifierPusher]: Applying distributivity, recursing on 2 terms
[2019-10-15 03:09:42,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2019-10-15 03:09:42,505 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2019-10-15 03:09:42,505 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 9] total 25
[2019-10-15 03:09:42,505 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018164909]
[2019-10-15 03:09:42,506 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 9 states
[2019-10-15 03:09:42,506 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:09:42,506 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2019-10-15 03:09:42,507 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600
[2019-10-15 03:09:42,507 INFO  L87              Difference]: Start difference. First operand 5502 states and 8244 transitions. Second operand 9 states.