java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c


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


This is Ultimate 0.1.24-13a467a-m
[2019-10-15 03:07:01,073 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-10-15 03:07:01,078 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-10-15 03:07:01,100 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-10-15 03:07:01,101 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-10-15 03:07:01,103 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-10-15 03:07:01,105 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-10-15 03:07:01,115 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-10-15 03:07:01,120 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-10-15 03:07:01,123 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-10-15 03:07:01,125 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-10-15 03:07:01,126 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-10-15 03:07:01,127 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-10-15 03:07:01,128 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-10-15 03:07:01,131 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-10-15 03:07:01,132 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-10-15 03:07:01,134 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-10-15 03:07:01,135 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-10-15 03:07:01,136 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-10-15 03:07:01,141 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-10-15 03:07:01,145 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-10-15 03:07:01,148 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-10-15 03:07:01,152 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-10-15 03:07:01,153 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-10-15 03:07:01,156 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-10-15 03:07:01,156 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-10-15 03:07:01,157 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-10-15 03:07:01,158 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-10-15 03:07:01,160 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-10-15 03:07:01,161 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-10-15 03:07:01,161 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-10-15 03:07:01,162 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-10-15 03:07:01,163 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-10-15 03:07:01,164 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-10-15 03:07:01,165 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-10-15 03:07:01,165 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-10-15 03:07:01,166 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-10-15 03:07:01,166 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-10-15 03:07:01,167 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-10-15 03:07:01,167 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-10-15 03:07:01,169 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-10-15 03:07:01,170 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 03:07:01,205 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-10-15 03:07:01,205 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-10-15 03:07:01,210 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-10-15 03:07:01,210 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-10-15 03:07:01,210 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-10-15 03:07:01,210 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-10-15 03:07:01,211 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-10-15 03:07:01,211 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-10-15 03:07:01,211 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-10-15 03:07:01,211 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-10-15 03:07:01,211 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-10-15 03:07:01,212 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-10-15 03:07:01,212 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-10-15 03:07:01,212 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-10-15 03:07:01,213 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-10-15 03:07:01,213 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-10-15 03:07:01,214 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-10-15 03:07:01,214 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-10-15 03:07:01,214 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-10-15 03:07:01,214 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-10-15 03:07:01,214 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-10-15 03:07:01,215 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-10-15 03:07:01,215 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-10-15 03:07:01,215 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-10-15 03:07:01,215 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-10-15 03:07:01,215 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-10-15 03:07:01,216 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-10-15 03:07:01,216 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-10-15 03:07:01,216 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 03:07:01,578 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-10-15 03:07:01,602 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-10-15 03:07:01,606 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-10-15 03:07:01,608 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-10-15 03:07:01,608 INFO  L275        PluginConnector]: CDTParser initialized
[2019-10-15 03:07:01,609 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c
[2019-10-15 03:07:01,699 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe40081c/52733f65738744fda1767267c4bbd884/FLAG698549d09
[2019-10-15 03:07:02,480 INFO  L306              CDTParser]: Found 1 translation units.
[2019-10-15 03:07:02,480 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product09.cil.c
[2019-10-15 03:07:02,502 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe40081c/52733f65738744fda1767267c4bbd884/FLAG698549d09
[2019-10-15 03:07:02,576 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/afe40081c/52733f65738744fda1767267c4bbd884
[2019-10-15 03:07:02,587 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-10-15 03:07:02,589 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-10-15 03:07:02,590 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-10-15 03:07:02,596 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-10-15 03:07:02,602 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-10-15 03:07:02,603 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:02" (1/1) ...
[2019-10-15 03:07:02,606 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6912290 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:02, skipping insertion in model container
[2019-10-15 03:07:02,606 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:07:02" (1/1) ...
[2019-10-15 03:07:02,614 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-10-15 03:07:02,704 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-10-15 03:07:03,507 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:07:03,528 INFO  L188         MainTranslator]: Completed pre-run
[2019-10-15 03:07:03,712 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-10-15 03:07:03,791 INFO  L192         MainTranslator]: Completed translation
[2019-10-15 03:07:03,792 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03 WrapperNode
[2019-10-15 03:07:03,792 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-10-15 03:07:03,793 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-10-15 03:07:03,793 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-10-15 03:07:03,793 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-10-15 03:07:03,807 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,808 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,846 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,847 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,909 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,950 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:03,976 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (1/1) ...
[2019-10-15 03:07:04,015 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-10-15 03:07:04,016 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-10-15 03:07:04,016 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-10-15 03:07:04,016 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-10-15 03:07:04,018 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (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 03:07:04,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-10-15 03:07:04,097 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-10-15 03:07:04,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:07:04,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-10-15 03:07:04,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-10-15 03:07:04,098 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-10-15 03:07:04,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:07:04,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-10-15 03:07:04,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-10-15 03:07:04,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-10-15 03:07:04,099 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-10-15 03:07:04,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-10-15 03:07:04,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-10-15 03:07:04,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-10-15 03:07:04,100 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-10-15 03:07:04,101 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-10-15 03:07:04,101 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-10-15 03:07:04,101 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-10-15 03:07:04,101 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-10-15 03:07:04,102 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-10-15 03:07:04,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-10-15 03:07:04,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-10-15 03:07:04,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-10-15 03:07:04,104 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-10-15 03:07:04,105 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-10-15 03:07:04,106 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-10-15 03:07:04,106 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2019-10-15 03:07:04,106 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-10-15 03:07:04,107 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-10-15 03:07:04,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-10-15 03:07:04,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-10-15 03:07:04,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-10-15 03:07:04,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-10-15 03:07:04,108 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-10-15 03:07:04,109 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-10-15 03:07:04,109 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-10-15 03:07:04,109 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-10-15 03:07:04,109 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-10-15 03:07:04,109 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-10-15 03:07:04,111 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-10-15 03:07:04,111 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-10-15 03:07:04,111 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-10-15 03:07:04,111 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-10-15 03:07:04,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-10-15 03:07:04,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-10-15 03:07:04,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-10-15 03:07:04,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-10-15 03:07:04,112 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-10-15 03:07:04,113 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-10-15 03:07:04,113 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-10-15 03:07:04,114 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-10-15 03:07:04,114 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-10-15 03:07:04,114 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-10-15 03:07:04,114 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:07:04,114 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-10-15 03:07:04,115 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-10-15 03:07:04,115 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-10-15 03:07:04,115 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-10-15 03:07:04,115 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-10-15 03:07:04,116 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-10-15 03:07:04,116 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-10-15 03:07:04,116 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-10-15 03:07:04,116 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-10-15 03:07:04,117 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-10-15 03:07:04,118 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-10-15 03:07:04,118 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-10-15 03:07:04,118 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-10-15 03:07:04,119 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-10-15 03:07:04,119 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-10-15 03:07:04,119 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-10-15 03:07:04,120 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-10-15 03:07:04,121 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-10-15 03:07:04,121 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-10-15 03:07:04,121 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-10-15 03:07:04,121 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-10-15 03:07:04,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-10-15 03:07:04,122 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-10-15 03:07:04,122 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-10-15 03:07:04,122 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-10-15 03:07:04,122 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-10-15 03:07:04,123 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-10-15 03:07:04,124 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-10-15 03:07:04,124 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-10-15 03:07:04,124 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-10-15 03:07:04,124 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-10-15 03:07:04,124 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-10-15 03:07:04,125 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-10-15 03:07:04,125 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-10-15 03:07:04,125 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-10-15 03:07:04,125 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-10-15 03:07:04,125 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-10-15 03:07:04,126 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-10-15 03:07:04,127 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-10-15 03:07:04,127 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-10-15 03:07:04,127 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-10-15 03:07:04,127 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-10-15 03:07:04,127 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-10-15 03:07:04,128 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-10-15 03:07:04,128 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-10-15 03:07:04,128 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-10-15 03:07:04,129 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2019-10-15 03:07:04,129 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4
[2019-10-15 03:07:04,129 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-10-15 03:07:04,129 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-10-15 03:07:04,130 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-10-15 03:07:04,131 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-10-15 03:07:04,132 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-10-15 03:07:04,132 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-10-15 03:07:04,133 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-10-15 03:07:04,136 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-10-15 03:07:04,136 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-10-15 03:07:04,137 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-10-15 03:07:04,137 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-10-15 03:07:04,137 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-10-15 03:07:04,137 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-10-15 03:07:04,138 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-10-15 03:07:04,138 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-10-15 03:07:04,138 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-10-15 03:07:04,139 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-10-15 03:07:04,146 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-10-15 03:07:04,146 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-10-15 03:07:04,146 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-10-15 03:07:04,147 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-10-15 03:07:04,147 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-10-15 03:07:04,147 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-10-15 03:07:04,147 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-10-15 03:07:04,147 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-10-15 03:07:04,148 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-10-15 03:07:04,149 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-10-15 03:07:04,149 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-10-15 03:07:04,149 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-10-15 03:07:10,316 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-10-15 03:07:10,317 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-10-15 03:07:10,318 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:10 BoogieIcfgContainer
[2019-10-15 03:07:10,319 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-10-15 03:07:10,320 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-10-15 03:07:10,320 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-10-15 03:07:10,323 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-10-15 03:07:10,323 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:07:02" (1/3) ...
[2019-10-15 03:07:10,324 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608f8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:10, skipping insertion in model container
[2019-10-15 03:07:10,324 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:07:03" (2/3) ...
[2019-10-15 03:07:10,325 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7608f8b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:07:10, skipping insertion in model container
[2019-10-15 03:07:10,325 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:07:10" (3/3) ...
[2019-10-15 03:07:10,328 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec1_product09.cil.c
[2019-10-15 03:07:10,338 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-10-15 03:07:10,352 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-10-15 03:07:10,366 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-10-15 03:07:10,420 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-10-15 03:07:10,421 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-10-15 03:07:10,421 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-10-15 03:07:10,421 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-10-15 03:07:10,421 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-10-15 03:07:10,421 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-10-15 03:07:10,421 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-10-15 03:07:10,421 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-10-15 03:07:10,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 538 states.
[2019-10-15 03:07:10,484 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2019-10-15 03:07:10,484 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:10,485 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:10,487 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:10,492 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:10,493 INFO  L82        PathProgramCache]: Analyzing trace with hash -3497016, now seen corresponding path program 1 times
[2019-10-15 03:07:10,504 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:10,504 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363910640]
[2019-10-15 03:07:10,505 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:10,505 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:10,505 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:10,923 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:11,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-15 03:07:11,436 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363910640]
[2019-10-15 03:07:11,437 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:11,438 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-15 03:07:11,438 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921334556]
[2019-10-15 03:07:11,445 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-15 03:07:11,445 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:11,467 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-15 03:07:11,468 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-10-15 03:07:11,470 INFO  L87              Difference]: Start difference. First operand 538 states. Second operand 8 states.
[2019-10-15 03:07:11,734 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:11,734 INFO  L93              Difference]: Finished difference Result 829 states and 1286 transitions.
[2019-10-15 03:07:11,738 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-15 03:07:11,741 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 115
[2019-10-15 03:07:11,743 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:11,784 INFO  L225             Difference]: With dead ends: 829
[2019-10-15 03:07:11,785 INFO  L226             Difference]: Without dead ends: 452
[2019-10-15 03:07:11,806 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-10-15 03:07:11,846 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 452 states.
[2019-10-15 03:07:12,018 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 417.
[2019-10-15 03:07:12,020 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 417 states.
[2019-10-15 03:07:12,031 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 624 transitions.
[2019-10-15 03:07:12,035 INFO  L78                 Accepts]: Start accepts. Automaton has 417 states and 624 transitions. Word has length 115
[2019-10-15 03:07:12,038 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:12,038 INFO  L462      AbstractCegarLoop]: Abstraction has 417 states and 624 transitions.
[2019-10-15 03:07:12,038 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-15 03:07:12,038 INFO  L276                IsEmpty]: Start isEmpty. Operand 417 states and 624 transitions.
[2019-10-15 03:07:12,055 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2019-10-15 03:07:12,055 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:12,056 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:12,056 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:12,057 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:12,057 INFO  L82        PathProgramCache]: Analyzing trace with hash -1674674738, now seen corresponding path program 1 times
[2019-10-15 03:07:12,057 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:12,058 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467153206]
[2019-10-15 03:07:12,058 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:12,058 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:12,058 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:12,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:12,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-15 03:07:12,447 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467153206]
[2019-10-15 03:07:12,447 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:12,447 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-15 03:07:12,448 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378912780]
[2019-10-15 03:07:12,461 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-15 03:07:12,462 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:12,462 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-15 03:07:12,462 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-10-15 03:07:12,462 INFO  L87              Difference]: Start difference. First operand 417 states and 624 transitions. Second operand 7 states.
[2019-10-15 03:07:17,661 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:17,662 INFO  L93              Difference]: Finished difference Result 1260 states and 1955 transitions.
[2019-10-15 03:07:17,663 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-10-15 03:07:17,663 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 120
[2019-10-15 03:07:17,664 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:17,678 INFO  L225             Difference]: With dead ends: 1260
[2019-10-15 03:07:17,678 INFO  L226             Difference]: Without dead ends: 896
[2019-10-15 03:07:17,683 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240
[2019-10-15 03:07:17,687 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 896 states.
[2019-10-15 03:07:17,807 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 896 to 869.
[2019-10-15 03:07:17,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 869 states.
[2019-10-15 03:07:17,816 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 869 states to 869 states and 1350 transitions.
[2019-10-15 03:07:17,817 INFO  L78                 Accepts]: Start accepts. Automaton has 869 states and 1350 transitions. Word has length 120
[2019-10-15 03:07:17,819 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:17,822 INFO  L462      AbstractCegarLoop]: Abstraction has 869 states and 1350 transitions.
[2019-10-15 03:07:17,823 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-15 03:07:17,823 INFO  L276                IsEmpty]: Start isEmpty. Operand 869 states and 1350 transitions.
[2019-10-15 03:07:17,829 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2019-10-15 03:07:17,829 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:17,830 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:17,830 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:17,830 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:17,831 INFO  L82        PathProgramCache]: Analyzing trace with hash -721454288, now seen corresponding path program 1 times
[2019-10-15 03:07:17,831 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:17,831 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732636138]
[2019-10-15 03:07:17,833 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:17,834 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:17,834 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:17,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:18,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-15 03:07:18,170 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732636138]
[2019-10-15 03:07:18,171 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:18,171 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-10-15 03:07:18,171 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604542660]
[2019-10-15 03:07:18,172 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-10-15 03:07:18,172 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:18,172 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-10-15 03:07:18,172 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:07:18,173 INFO  L87              Difference]: Start difference. First operand 869 states and 1350 transitions. Second operand 5 states.
[2019-10-15 03:07:18,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:18,266 INFO  L93              Difference]: Finished difference Result 1370 states and 2143 transitions.
[2019-10-15 03:07:18,267 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-10-15 03:07:18,267 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 124
[2019-10-15 03:07:18,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:18,275 INFO  L225             Difference]: With dead ends: 1370
[2019-10-15 03:07:18,275 INFO  L226             Difference]: Without dead ends: 891
[2019-10-15 03:07:18,278 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-10-15 03:07:18,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 891 states.
[2019-10-15 03:07:18,330 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 891 to 881.
[2019-10-15 03:07:18,331 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 881 states.
[2019-10-15 03:07:18,337 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1365 transitions.
[2019-10-15 03:07:18,338 INFO  L78                 Accepts]: Start accepts. Automaton has 881 states and 1365 transitions. Word has length 124
[2019-10-15 03:07:18,338 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:18,339 INFO  L462      AbstractCegarLoop]: Abstraction has 881 states and 1365 transitions.
[2019-10-15 03:07:18,339 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-10-15 03:07:18,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 881 states and 1365 transitions.
[2019-10-15 03:07:18,343 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2019-10-15 03:07:18,343 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:18,343 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:18,344 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:18,344 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:18,344 INFO  L82        PathProgramCache]: Analyzing trace with hash -1564514424, now seen corresponding path program 1 times
[2019-10-15 03:07:18,344 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:18,344 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671183365]
[2019-10-15 03:07:18,345 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:18,345 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:18,345 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:18,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:18,694 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-15 03:07:18,695 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671183365]
[2019-10-15 03:07:18,695 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:18,695 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-10-15 03:07:18,695 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903464812]
[2019-10-15 03:07:18,696 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-10-15 03:07:18,697 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:18,697 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-10-15 03:07:18,697 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-10-15 03:07:18,698 INFO  L87              Difference]: Start difference. First operand 881 states and 1365 transitions. Second operand 8 states.
[2019-10-15 03:07:23,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:23,145 INFO  L93              Difference]: Finished difference Result 1856 states and 2884 transitions.
[2019-10-15 03:07:23,146 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-10-15 03:07:23,146 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 128
[2019-10-15 03:07:23,147 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:23,157 INFO  L225             Difference]: With dead ends: 1856
[2019-10-15 03:07:23,157 INFO  L226             Difference]: Without dead ends: 1269
[2019-10-15 03:07:23,161 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72
[2019-10-15 03:07:23,163 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1269 states.
[2019-10-15 03:07:23,243 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1219.
[2019-10-15 03:07:23,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1219 states.
[2019-10-15 03:07:23,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1849 transitions.
[2019-10-15 03:07:23,253 INFO  L78                 Accepts]: Start accepts. Automaton has 1219 states and 1849 transitions. Word has length 128
[2019-10-15 03:07:23,254 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:23,254 INFO  L462      AbstractCegarLoop]: Abstraction has 1219 states and 1849 transitions.
[2019-10-15 03:07:23,254 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-10-15 03:07:23,254 INFO  L276                IsEmpty]: Start isEmpty. Operand 1219 states and 1849 transitions.
[2019-10-15 03:07:23,258 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2019-10-15 03:07:23,259 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:23,259 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:23,259 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:23,259 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:23,260 INFO  L82        PathProgramCache]: Analyzing trace with hash 38619959, now seen corresponding path program 1 times
[2019-10-15 03:07:23,260 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:23,261 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097237278]
[2019-10-15 03:07:23,261 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:23,261 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:23,261 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:23,339 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:23,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-10-15 03:07:23,512 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097237278]
[2019-10-15 03:07:23,512 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:23,512 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-15 03:07:23,513 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124779133]
[2019-10-15 03:07:23,514 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-15 03:07:23,514 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:23,514 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-15 03:07:23,515 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-10-15 03:07:23,515 INFO  L87              Difference]: Start difference. First operand 1219 states and 1849 transitions. Second operand 7 states.
[2019-10-15 03:07:23,891 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:23,891 INFO  L93              Difference]: Finished difference Result 2288 states and 3556 transitions.
[2019-10-15 03:07:23,892 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-10-15 03:07:23,892 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 131
[2019-10-15 03:07:23,893 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:23,902 INFO  L225             Difference]: With dead ends: 2288
[2019-10-15 03:07:23,902 INFO  L226             Difference]: Without dead ends: 1219
[2019-10-15 03:07:23,909 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56
[2019-10-15 03:07:23,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1219 states.
[2019-10-15 03:07:23,969 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1219.
[2019-10-15 03:07:23,969 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1219 states.
[2019-10-15 03:07:23,976 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1219 states to 1219 states and 1817 transitions.
[2019-10-15 03:07:23,977 INFO  L78                 Accepts]: Start accepts. Automaton has 1219 states and 1817 transitions. Word has length 131
[2019-10-15 03:07:23,977 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:23,978 INFO  L462      AbstractCegarLoop]: Abstraction has 1219 states and 1817 transitions.
[2019-10-15 03:07:23,978 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-15 03:07:23,978 INFO  L276                IsEmpty]: Start isEmpty. Operand 1219 states and 1817 transitions.
[2019-10-15 03:07:23,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2019-10-15 03:07:23,981 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:23,981 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:23,981 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:23,982 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:23,982 INFO  L82        PathProgramCache]: Analyzing trace with hash -987124071, now seen corresponding path program 1 times
[2019-10-15 03:07:23,982 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:23,983 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911131807]
[2019-10-15 03:07:23,983 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:23,983 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:23,983 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:24,053 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:24,280 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-10-15 03:07:24,281 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911131807]
[2019-10-15 03:07:24,281 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:24,281 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-10-15 03:07:24,282 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463396150]
[2019-10-15 03:07:24,282 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-10-15 03:07:24,282 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:24,283 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-10-15 03:07:24,283 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-10-15 03:07:24,283 INFO  L87              Difference]: Start difference. First operand 1219 states and 1817 transitions. Second operand 7 states.
[2019-10-15 03:07:28,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-10-15 03:07:28,827 INFO  L93              Difference]: Finished difference Result 2157 states and 3226 transitions.
[2019-10-15 03:07:28,827 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-10-15 03:07:28,828 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 133
[2019-10-15 03:07:28,828 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-10-15 03:07:28,837 INFO  L225             Difference]: With dead ends: 2157
[2019-10-15 03:07:28,838 INFO  L226             Difference]: Without dead ends: 1289
[2019-10-15 03:07:28,842 INFO  L600         BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132
[2019-10-15 03:07:28,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1289 states.
[2019-10-15 03:07:28,901 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1289 to 1246.
[2019-10-15 03:07:28,901 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1246 states.
[2019-10-15 03:07:28,909 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1246 states to 1246 states and 1851 transitions.
[2019-10-15 03:07:28,910 INFO  L78                 Accepts]: Start accepts. Automaton has 1246 states and 1851 transitions. Word has length 133
[2019-10-15 03:07:28,910 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-10-15 03:07:28,911 INFO  L462      AbstractCegarLoop]: Abstraction has 1246 states and 1851 transitions.
[2019-10-15 03:07:28,911 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-10-15 03:07:28,911 INFO  L276                IsEmpty]: Start isEmpty. Operand 1246 states and 1851 transitions.
[2019-10-15 03:07:28,914 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-10-15 03:07:28,914 INFO  L372         BasicCegarLoop]: Found error trace
[2019-10-15 03:07:28,914 INFO  L380         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-10-15 03:07:28,915 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-10-15 03:07:28,915 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-10-15 03:07:28,915 INFO  L82        PathProgramCache]: Analyzing trace with hash 1327241965, now seen corresponding path program 1 times
[2019-10-15 03:07:28,915 INFO  L157   tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-10-15 03:07:28,916 INFO  L342   tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471875629]
[2019-10-15 03:07:28,916 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:28,916 INFO  L116   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-10-15 03:07:28,916 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-10-15 03:07:28,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-10-15 03:07:29,677 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2019-10-15 03:07:29,678 INFO  L342   tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471875629]
[2019-10-15 03:07:29,678 INFO  L223   tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-10-15 03:07:29,678 INFO  L236   tionRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2019-10-15 03:07:29,678 INFO  L342   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005263823]
[2019-10-15 03:07:29,679 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 26 states
[2019-10-15 03:07:29,679 INFO  L137   tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-10-15 03:07:29,679 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2019-10-15 03:07:29,680 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650
[2019-10-15 03:07:29,680 INFO  L87              Difference]: Start difference. First operand 1246 states and 1851 transitions. Second operand 26 states.