/usr/bin/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_product25.cil.c


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


This is Ultimate 0.1.24-fb55353
[2019-11-07 04:08:56,613 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2019-11-07 04:08:56,617 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2019-11-07 04:08:56,636 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-11-07 04:08:56,636 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2019-11-07 04:08:56,638 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2019-11-07 04:08:56,640 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2019-11-07 04:08:56,650 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2019-11-07 04:08:56,655 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2019-11-07 04:08:56,658 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2019-11-07 04:08:56,660 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2019-11-07 04:08:56,661 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2019-11-07 04:08:56,661 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2019-11-07 04:08:56,663 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2019-11-07 04:08:56,665 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2019-11-07 04:08:56,666 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2019-11-07 04:08:56,668 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2019-11-07 04:08:56,669 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2019-11-07 04:08:56,670 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-11-07 04:08:56,674 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2019-11-07 04:08:56,679 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2019-11-07 04:08:56,682 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2019-11-07 04:08:56,684 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2019-11-07 04:08:56,685 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2019-11-07 04:08:56,688 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-11-07 04:08:56,688 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-11-07 04:08:56,688 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-11-07 04:08:56,690 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2019-11-07 04:08:56,690 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2019-11-07 04:08:56,692 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2019-11-07 04:08:56,692 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2019-11-07 04:08:56,694 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2019-11-07 04:08:56,695 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2019-11-07 04:08:56,696 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2019-11-07 04:08:56,697 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2019-11-07 04:08:56,697 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2019-11-07 04:08:56,698 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2019-11-07 04:08:56,698 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2019-11-07 04:08:56,699 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2019-11-07 04:08:56,699 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2019-11-07 04:08:56,700 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2019-11-07 04:08:56,701 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
[2019-11-07 04:08:56,723 INFO  L113        SettingsManager]: Loading preferences was successful
[2019-11-07 04:08:56,723 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2019-11-07 04:08:56,730 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-11-07 04:08:56,730 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2019-11-07 04:08:56,730 INFO  L138        SettingsManager]:  * Use SBE=true
[2019-11-07 04:08:56,730 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-11-07 04:08:56,730 INFO  L138        SettingsManager]:  * sizeof long=4
[2019-11-07 04:08:56,731 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2019-11-07 04:08:56,731 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2019-11-07 04:08:56,731 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2019-11-07 04:08:56,731 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2019-11-07 04:08:56,731 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-11-07 04:08:56,732 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-11-07 04:08:56,732 INFO  L138        SettingsManager]:  * sizeof long double=12
[2019-11-07 04:08:56,733 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2019-11-07 04:08:56,733 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2019-11-07 04:08:56,733 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2019-11-07 04:08:56,733 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-11-07 04:08:56,733 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2019-11-07 04:08:56,733 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2019-11-07 04:08:56,734 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2019-11-07 04:08:56,734 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-11-07 04:08:56,734 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-11-07 04:08:56,735 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-11-07 04:08:56,735 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-11-07 04:08:56,735 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2019-11-07 04:08:56,735 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-11-07 04:08:56,736 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-11-07 04:08:56,736 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
[2019-11-07 04:08:57,009 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-11-07 04:08:57,026 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-11-07 04:08:57,030 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-11-07 04:08:57,032 INFO  L271        PluginConnector]: Initializing CDTParser...
[2019-11-07 04:08:57,032 INFO  L275        PluginConnector]: CDTParser initialized
[2019-11-07 04:08:57,033 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c
[2019-11-07 04:08:57,110 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b3becaa/1ef18c55550c4218bf2cf5907eb69a01/FLAG80d7ca8d5
[2019-11-07 04:08:57,826 INFO  L306              CDTParser]: Found 1 translation units.
[2019-11-07 04:08:57,827 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product25.cil.c
[2019-11-07 04:08:57,859 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b3becaa/1ef18c55550c4218bf2cf5907eb69a01/FLAG80d7ca8d5
[2019-11-07 04:08:57,967 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e0b3becaa/1ef18c55550c4218bf2cf5907eb69a01
[2019-11-07 04:08:57,975 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-11-07 04:08:57,978 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2019-11-07 04:08:57,980 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-11-07 04:08:57,980 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2019-11-07 04:08:57,984 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2019-11-07 04:08:57,985 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:57" (1/1) ...
[2019-11-07 04:08:57,988 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a7bee3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:57, skipping insertion in model container
[2019-11-07 04:08:57,988 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:08:57" (1/1) ...
[2019-11-07 04:08:57,997 INFO  L142         MainTranslator]: Starting translation in SV-COMP mode 
[2019-11-07 04:08:58,087 INFO  L173         MainTranslator]: Built tables and reachable declarations
[2019-11-07 04:08:58,800 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-07 04:08:58,833 INFO  L188         MainTranslator]: Completed pre-run
[2019-11-07 04:08:58,966 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2019-11-07 04:08:59,026 INFO  L192         MainTranslator]: Completed translation
[2019-11-07 04:08:59,027 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59 WrapperNode
[2019-11-07 04:08:59,027 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-11-07 04:08:59,028 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-11-07 04:08:59,028 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-11-07 04:08:59,028 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-11-07 04:08:59,042 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,042 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,074 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,074 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,132 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,170 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,197 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (1/1) ...
[2019-11-07 04:08:59,229 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-11-07 04:08:59,230 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-11-07 04:08:59,230 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-11-07 04:08:59,230 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-11-07 04:08:59,231 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (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
[2019-11-07 04:08:59,304 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2019-11-07 04:08:59,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-11-07 04:08:59,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int
[2019-11-07 04:08:59,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_one
[2019-11-07 04:08:59,305 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_features
[2019-11-07 04:08:59,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure select_helpers
[2019-11-07 04:08:59,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure valid_product
[2019-11-07 04:08:59,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set
[2019-11-07 04:08:59,306 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free
[2019-11-07 04:08:59,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset
[2019-11-07 04:08:59,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt
[2019-11-07 04:08:59,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg
[2019-11-07 04:08:59,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype
[2019-11-07 04:08:59,307 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec1
[2019-11-07 04:08:59,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure spec14
[2019-11-07 04:08:59,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure __automaton_fail
[2019-11-07 04:08:59,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure get_nondetMinMax07
[2019-11-07 04:08:59,308 INFO  L138     BoogieDeclarations]: Found implementation of procedure bobCall
[2019-11-07 04:08:59,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure aliceCall
[2019-11-07 04:08:59,309 INFO  L138     BoogieDeclarations]: Found implementation of procedure angelinaCall
[2019-11-07 04:08:59,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure chuckCall
[2019-11-07 04:08:59,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure monicaCall
[2019-11-07 04:08:59,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure bigMacCall
[2019-11-07 04:08:59,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure threeTS
[2019-11-07 04:08:59,310 INFO  L138     BoogieDeclarations]: Found implementation of procedure cleanup
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure randomSequenceOfActions
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest_Simple
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification1
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification2
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure Specification3
[2019-11-07 04:08:59,311 INFO  L138     BoogieDeclarations]: Found implementation of procedure setup
[2019-11-07 04:08:59,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure runTest
[2019-11-07 04:08:59,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2019-11-07 04:08:59,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__1
[2019-11-07 04:08:59,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__2
[2019-11-07 04:08:59,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__3
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification1_spec__4
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure initFloors
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure isFloorCalling
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetCallOnFloor
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure callOnFloor
[2019-11-07 04:08:59,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure isPersonOnFloor
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure initPersonOnFloor
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure removePersonFromFloor
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure isTopFloor
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure test
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure getWeight
[2019-11-07 04:08:59,314 INFO  L138     BoogieDeclarations]: Found implementation of procedure getOrigin
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure getDestination
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure initTopDown
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure initBottomUp
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure isBlocked
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator__wrappee__base
[2019-11-07 04:08:59,315 INFO  L138     BoogieDeclarations]: Found implementation of procedure enterElevator
[2019-11-07 04:08:59,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__base
[2019-11-07 04:08:59,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator__wrappee__weight
[2019-11-07 04:08:59,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure leaveElevator
[2019-11-07 04:08:59,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton
[2019-11-07 04:08:59,316 INFO  L138     BoogieDeclarations]: Found implementation of procedure resetFloorButton
[2019-11-07 04:08:59,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentFloorID
[2019-11-07 04:08:59,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure areDoorsOpen
[2019-11-07 04:08:59,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed
[2019-11-07 04:08:59,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure getCurrentHeading
[2019-11-07 04:08:59,317 INFO  L138     BoogieDeclarations]: Found implementation of procedure isEmpty
[2019-11-07 04:08:59,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure anyStopRequested
[2019-11-07 04:08:59,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure isIdle
[2019-11-07 04:08:59,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection
[2019-11-07 04:08:59,318 INFO  L138     BoogieDeclarations]: Found implementation of procedure isAnyLiftButtonPressed
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure continueInDirection
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure getReverseHeading
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure processWaitingOnFloor
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure timeShift
[2019-11-07 04:08:59,319 INFO  L138     BoogieDeclarations]: Found implementation of procedure printState
[2019-11-07 04:08:59,320 INFO  L138     BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection
[2019-11-07 04:08:59,320 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2019-11-07 04:08:59,320 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2019-11-07 04:08:59,320 INFO  L130     BoogieDeclarations]: Found specification of procedure select_one
[2019-11-07 04:08:59,320 INFO  L130     BoogieDeclarations]: Found specification of procedure select_features
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure select_helpers
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure valid_product
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure __assert_fail
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2019-11-07 04:08:59,321 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set
[2019-11-07 04:08:59,322 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2019-11-07 04:08:59,322 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2019-11-07 04:08:59,322 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2019-11-07 04:08:59,322 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2019-11-07 04:08:59,322 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_arg
[2019-11-07 04:08:59,323 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure getOrigin
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure initPersonOnFloor
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure timeShift
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure isBlocked
[2019-11-07 04:08:59,324 INFO  L130     BoogieDeclarations]: Found specification of procedure printState
[2019-11-07 04:08:59,325 INFO  L130     BoogieDeclarations]: Found specification of procedure initTopDown
[2019-11-07 04:08:59,325 INFO  L130     BoogieDeclarations]: Found specification of procedure initBottomUp
[2019-11-07 04:08:59,325 INFO  L130     BoogieDeclarations]: Found specification of procedure spec1
[2019-11-07 04:08:59,325 INFO  L130     BoogieDeclarations]: Found specification of procedure spec14
[2019-11-07 04:08:59,325 INFO  L130     BoogieDeclarations]: Found specification of procedure __automaton_fail
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure get_nondetMinMax07
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure bobCall
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure aliceCall
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure angelinaCall
[2019-11-07 04:08:59,326 INFO  L130     BoogieDeclarations]: Found specification of procedure chuckCall
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure monicaCall
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure bigMacCall
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure threeTS
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure isIdle
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure cleanup
[2019-11-07 04:08:59,327 INFO  L130     BoogieDeclarations]: Found specification of procedure randomSequenceOfActions
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest_Simple
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification1
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification2
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure Specification3
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure setup
[2019-11-07 04:08:59,328 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__1
[2019-11-07 04:08:59,329 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__4
[2019-11-07 04:08:59,329 INFO  L130     BoogieDeclarations]: Found specification of procedure test
[2019-11-07 04:08:59,329 INFO  L130     BoogieDeclarations]: Found specification of procedure runTest
[2019-11-07 04:08:59,329 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2019-11-07 04:08:59,329 INFO  L130     BoogieDeclarations]: Found specification of procedure areDoorsOpen
[2019-11-07 04:08:59,330 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentFloorID
[2019-11-07 04:08:59,330 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__2
[2019-11-07 04:08:59,330 INFO  L130     BoogieDeclarations]: Found specification of procedure __utac_acc__Specification1_spec__3
[2019-11-07 04:08:59,330 INFO  L130     BoogieDeclarations]: Found specification of procedure isFloorCalling
[2019-11-07 04:08:59,330 INFO  L130     BoogieDeclarations]: Found specification of procedure resetCallOnFloor
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure callOnFloor
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure isPersonOnFloor
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure removePersonFromFloor
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure isTopFloor
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure initFloors
[2019-11-07 04:08:59,331 INFO  L130     BoogieDeclarations]: Found specification of procedure getWeight
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure getDestination
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure printf
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure isEmpty
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure isAnyLiftButtonPressed
[2019-11-07 04:08:59,332 INFO  L130     BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure enterElevator__wrappee__base
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__base
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator__wrappee__weight
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure leaveElevator
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton
[2019-11-07 04:08:59,333 INFO  L130     BoogieDeclarations]: Found specification of procedure resetFloorButton
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure getCurrentHeading
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure anyStopRequested
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedInDirection
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure continueInDirection
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor
[2019-11-07 04:08:59,334 INFO  L130     BoogieDeclarations]: Found specification of procedure getReverseHeading
[2019-11-07 04:08:59,335 INFO  L130     BoogieDeclarations]: Found specification of procedure processWaitingOnFloor
[2019-11-07 04:08:59,338 INFO  L130     BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection
[2019-11-07 04:08:59,338 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2019-11-07 04:08:59,338 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~int
[2019-11-07 04:08:59,338 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-11-07 04:09:04,235 INFO  L279             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-11-07 04:09:04,235 INFO  L284             CfgBuilder]: Removed 10 assume(true) statements.
[2019-11-07 04:09:04,237 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:04 BoogieIcfgContainer
[2019-11-07 04:09:04,237 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-11-07 04:09:04,238 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2019-11-07 04:09:04,238 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2019-11-07 04:09:04,241 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2019-11-07 04:09:04,241 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:08:57" (1/3) ...
[2019-11-07 04:09:04,242 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cc0051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:04, skipping insertion in model container
[2019-11-07 04:09:04,242 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:08:59" (2/3) ...
[2019-11-07 04:09:04,243 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21cc0051 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:09:04, skipping insertion in model container
[2019-11-07 04:09:04,243 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:09:04" (3/3) ...
[2019-11-07 04:09:04,245 INFO  L109   eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c
[2019-11-07 04:09:04,254 INFO  L152   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-11-07 04:09:04,263 INFO  L164   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2019-11-07 04:09:04,274 INFO  L249      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2019-11-07 04:09:04,303 INFO  L373      AbstractCegarLoop]: Interprodecural is true
[2019-11-07 04:09:04,303 INFO  L374      AbstractCegarLoop]: Hoare is true
[2019-11-07 04:09:04,303 INFO  L375      AbstractCegarLoop]: Compute interpolants for FPandBP
[2019-11-07 04:09:04,303 INFO  L376      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2019-11-07 04:09:04,303 INFO  L377      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2019-11-07 04:09:04,304 INFO  L378      AbstractCegarLoop]: Difference is false
[2019-11-07 04:09:04,304 INFO  L379      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2019-11-07 04:09:04,304 INFO  L383      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-11-07 04:09:04,334 INFO  L276                IsEmpty]: Start isEmpty. Operand 550 states.
[2019-11-07 04:09:04,356 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2019-11-07 04:09:04,357 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:04,358 INFO  L410         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]
[2019-11-07 04:09:04,360 INFO  L410      AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:04,366 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:04,366 INFO  L82        PathProgramCache]: Analyzing trace with hash -1952285522, now seen corresponding path program 1 times
[2019-11-07 04:09:04,375 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:04,376 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896670455]
[2019-11-07 04:09:04,376 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:04,751 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:05,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:09:05,102 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896670455]
[2019-11-07 04:09:05,102 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:05,103 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-07 04:09:05,103 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227289275]
[2019-11-07 04:09:05,109 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-07 04:09:05,109 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:05,123 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-07 04:09:05,124 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-11-07 04:09:05,127 INFO  L87              Difference]: Start difference. First operand 550 states. Second operand 8 states.
[2019-11-07 04:09:05,279 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:05,279 INFO  L93              Difference]: Finished difference Result 853 states and 1312 transitions.
[2019-11-07 04:09:05,280 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-07 04:09:05,281 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 115
[2019-11-07 04:09:05,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:05,321 INFO  L225             Difference]: With dead ends: 853
[2019-11-07 04:09:05,321 INFO  L226             Difference]: Without dead ends: 464
[2019-11-07 04:09:05,330 INFO  L630         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2019-11-07 04:09:05,349 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 464 states.
[2019-11-07 04:09:05,424 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 429.
[2019-11-07 04:09:05,430 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 429 states.
[2019-11-07 04:09:05,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 637 transitions.
[2019-11-07 04:09:05,445 INFO  L78                 Accepts]: Start accepts. Automaton has 429 states and 637 transitions. Word has length 115
[2019-11-07 04:09:05,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:05,446 INFO  L462      AbstractCegarLoop]: Abstraction has 429 states and 637 transitions.
[2019-11-07 04:09:05,446 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-07 04:09:05,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 429 states and 637 transitions.
[2019-11-07 04:09:05,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2019-11-07 04:09:05,459 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:05,459 INFO  L410         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]
[2019-11-07 04:09:05,459 INFO  L410      AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:05,460 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:05,460 INFO  L82        PathProgramCache]: Analyzing trace with hash -1054827528, now seen corresponding path program 1 times
[2019-11-07 04:09:05,460 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:05,460 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334109310]
[2019-11-07 04:09:05,461 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:05,588 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:05,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:09:05,886 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334109310]
[2019-11-07 04:09:05,886 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:05,887 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-07 04:09:05,887 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437662837]
[2019-11-07 04:09:05,898 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-07 04:09:05,898 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:05,906 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-07 04:09:05,906 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-11-07 04:09:05,906 INFO  L87              Difference]: Start difference. First operand 429 states and 637 transitions. Second operand 7 states.
[2019-11-07 04:09:09,667 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:09,667 INFO  L93              Difference]: Finished difference Result 1296 states and 1994 transitions.
[2019-11-07 04:09:09,668 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2019-11-07 04:09:09,668 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 120
[2019-11-07 04:09:09,668 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:09,677 INFO  L225             Difference]: With dead ends: 1296
[2019-11-07 04:09:09,677 INFO  L226             Difference]: Without dead ends: 920
[2019-11-07 04:09:09,680 INFO  L630         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
[2019-11-07 04:09:09,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 920 states.
[2019-11-07 04:09:09,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 893.
[2019-11-07 04:09:09,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 893 states.
[2019-11-07 04:09:09,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1376 transitions.
[2019-11-07 04:09:09,777 INFO  L78                 Accepts]: Start accepts. Automaton has 893 states and 1376 transitions. Word has length 120
[2019-11-07 04:09:09,778 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:09,778 INFO  L462      AbstractCegarLoop]: Abstraction has 893 states and 1376 transitions.
[2019-11-07 04:09:09,778 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-07 04:09:09,778 INFO  L276                IsEmpty]: Start isEmpty. Operand 893 states and 1376 transitions.
[2019-11-07 04:09:09,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2019-11-07 04:09:09,787 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:09,788 INFO  L410         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]
[2019-11-07 04:09:09,788 INFO  L410      AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:09,789 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:09,789 INFO  L82        PathProgramCache]: Analyzing trace with hash 1595381557, now seen corresponding path program 1 times
[2019-11-07 04:09:09,789 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:09,789 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187902810]
[2019-11-07 04:09:09,789 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:09,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:10,021 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:09:10,022 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187902810]
[2019-11-07 04:09:10,022 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:10,023 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-11-07 04:09:10,024 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399247190]
[2019-11-07 04:09:10,027 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 5 states
[2019-11-07 04:09:10,027 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:10,027 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2019-11-07 04:09:10,028 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-11-07 04:09:10,028 INFO  L87              Difference]: Start difference. First operand 893 states and 1376 transitions. Second operand 5 states.
[2019-11-07 04:09:10,105 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:10,106 INFO  L93              Difference]: Finished difference Result 1406 states and 2182 transitions.
[2019-11-07 04:09:10,106 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-11-07 04:09:10,106 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 124
[2019-11-07 04:09:10,108 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:10,115 INFO  L225             Difference]: With dead ends: 1406
[2019-11-07 04:09:10,115 INFO  L226             Difference]: Without dead ends: 915
[2019-11-07 04:09:10,118 INFO  L630         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
[2019-11-07 04:09:10,120 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 915 states.
[2019-11-07 04:09:10,202 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 915 to 905.
[2019-11-07 04:09:10,203 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 905 states.
[2019-11-07 04:09:10,212 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1391 transitions.
[2019-11-07 04:09:10,214 INFO  L78                 Accepts]: Start accepts. Automaton has 905 states and 1391 transitions. Word has length 124
[2019-11-07 04:09:10,216 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:10,216 INFO  L462      AbstractCegarLoop]: Abstraction has 905 states and 1391 transitions.
[2019-11-07 04:09:10,216 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2019-11-07 04:09:10,216 INFO  L276                IsEmpty]: Start isEmpty. Operand 905 states and 1391 transitions.
[2019-11-07 04:09:10,222 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2019-11-07 04:09:10,222 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:10,223 INFO  L410         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]
[2019-11-07 04:09:10,223 INFO  L410      AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:10,223 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:10,223 INFO  L82        PathProgramCache]: Analyzing trace with hash -1852638131, now seen corresponding path program 1 times
[2019-11-07 04:09:10,224 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:10,224 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075242176]
[2019-11-07 04:09:10,224 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:10,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:10,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:09:10,632 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075242176]
[2019-11-07 04:09:10,633 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:10,633 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2019-11-07 04:09:10,633 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819256721]
[2019-11-07 04:09:10,634 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 8 states
[2019-11-07 04:09:10,634 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:10,635 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2019-11-07 04:09:10,635 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2019-11-07 04:09:10,635 INFO  L87              Difference]: Start difference. First operand 905 states and 1391 transitions. Second operand 8 states.
[2019-11-07 04:09:14,061 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:14,061 INFO  L93              Difference]: Finished difference Result 1904 states and 2936 transitions.
[2019-11-07 04:09:14,062 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-11-07 04:09:14,062 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 128
[2019-11-07 04:09:14,063 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:14,077 INFO  L225             Difference]: With dead ends: 1904
[2019-11-07 04:09:14,077 INFO  L226             Difference]: Without dead ends: 1305
[2019-11-07 04:09:14,083 INFO  L630         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
[2019-11-07 04:09:14,086 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1305 states.
[2019-11-07 04:09:14,164 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1305 to 1255.
[2019-11-07 04:09:14,164 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1255 states.
[2019-11-07 04:09:14,177 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1888 transitions.
[2019-11-07 04:09:14,178 INFO  L78                 Accepts]: Start accepts. Automaton has 1255 states and 1888 transitions. Word has length 128
[2019-11-07 04:09:14,178 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:14,179 INFO  L462      AbstractCegarLoop]: Abstraction has 1255 states and 1888 transitions.
[2019-11-07 04:09:14,179 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2019-11-07 04:09:14,179 INFO  L276                IsEmpty]: Start isEmpty. Operand 1255 states and 1888 transitions.
[2019-11-07 04:09:14,182 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2019-11-07 04:09:14,183 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:14,183 INFO  L410         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]
[2019-11-07 04:09:14,183 INFO  L410      AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:14,184 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:14,184 INFO  L82        PathProgramCache]: Analyzing trace with hash -954095009, now seen corresponding path program 1 times
[2019-11-07 04:09:14,184 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:14,185 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218976159]
[2019-11-07 04:09:14,185 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:14,287 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:14,516 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2019-11-07 04:09:14,516 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218976159]
[2019-11-07 04:09:14,516 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:14,517 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-07 04:09:14,517 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948999303]
[2019-11-07 04:09:14,517 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-07 04:09:14,518 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:14,518 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-07 04:09:14,518 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-11-07 04:09:14,518 INFO  L87              Difference]: Start difference. First operand 1255 states and 1888 transitions. Second operand 7 states.
[2019-11-07 04:09:14,716 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:14,716 INFO  L93              Difference]: Finished difference Result 2348 states and 3621 transitions.
[2019-11-07 04:09:14,716 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2019-11-07 04:09:14,716 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 131
[2019-11-07 04:09:14,717 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:14,726 INFO  L225             Difference]: With dead ends: 2348
[2019-11-07 04:09:14,726 INFO  L226             Difference]: Without dead ends: 1255
[2019-11-07 04:09:14,732 INFO  L630         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
[2019-11-07 04:09:14,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1255 states.
[2019-11-07 04:09:14,790 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1255 to 1255.
[2019-11-07 04:09:14,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1255 states.
[2019-11-07 04:09:14,799 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1255 states to 1255 states and 1856 transitions.
[2019-11-07 04:09:14,800 INFO  L78                 Accepts]: Start accepts. Automaton has 1255 states and 1856 transitions. Word has length 131
[2019-11-07 04:09:14,800 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:14,800 INFO  L462      AbstractCegarLoop]: Abstraction has 1255 states and 1856 transitions.
[2019-11-07 04:09:14,800 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-07 04:09:14,801 INFO  L276                IsEmpty]: Start isEmpty. Operand 1255 states and 1856 transitions.
[2019-11-07 04:09:14,803 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2019-11-07 04:09:14,804 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:14,804 INFO  L410         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]
[2019-11-07 04:09:14,804 INFO  L410      AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:14,805 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:14,805 INFO  L82        PathProgramCache]: Analyzing trace with hash 1846314582, now seen corresponding path program 1 times
[2019-11-07 04:09:14,805 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:14,805 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069709519]
[2019-11-07 04:09:14,805 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:14,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:15,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2019-11-07 04:09:15,002 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069709519]
[2019-11-07 04:09:15,003 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:15,003 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2019-11-07 04:09:15,003 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256108524]
[2019-11-07 04:09:15,004 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 7 states
[2019-11-07 04:09:15,004 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:15,004 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2019-11-07 04:09:15,004 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2019-11-07 04:09:15,004 INFO  L87              Difference]: Start difference. First operand 1255 states and 1856 transitions. Second operand 7 states.
[2019-11-07 04:09:18,337 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2019-11-07 04:09:18,337 INFO  L93              Difference]: Finished difference Result 2217 states and 3291 transitions.
[2019-11-07 04:09:18,338 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2019-11-07 04:09:18,338 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 133
[2019-11-07 04:09:18,338 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2019-11-07 04:09:18,350 INFO  L225             Difference]: With dead ends: 2217
[2019-11-07 04:09:18,352 INFO  L226             Difference]: Without dead ends: 1325
[2019-11-07 04:09:18,357 INFO  L630         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
[2019-11-07 04:09:18,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1325 states.
[2019-11-07 04:09:18,431 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1282.
[2019-11-07 04:09:18,431 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1282 states.
[2019-11-07 04:09:18,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1890 transitions.
[2019-11-07 04:09:18,439 INFO  L78                 Accepts]: Start accepts. Automaton has 1282 states and 1890 transitions. Word has length 133
[2019-11-07 04:09:18,440 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2019-11-07 04:09:18,440 INFO  L462      AbstractCegarLoop]: Abstraction has 1282 states and 1890 transitions.
[2019-11-07 04:09:18,441 INFO  L463      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2019-11-07 04:09:18,441 INFO  L276                IsEmpty]: Start isEmpty. Operand 1282 states and 1890 transitions.
[2019-11-07 04:09:18,444 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2019-11-07 04:09:18,444 INFO  L402         BasicCegarLoop]: Found error trace
[2019-11-07 04:09:18,444 INFO  L410         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]
[2019-11-07 04:09:18,445 INFO  L410      AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-11-07 04:09:18,445 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2019-11-07 04:09:18,445 INFO  L82        PathProgramCache]: Analyzing trace with hash -358357125, now seen corresponding path program 1 times
[2019-11-07 04:09:18,445 INFO  L161   FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN
[2019-11-07 04:09:18,445 INFO  L337   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724606695]
[2019-11-07 04:09:18,446 INFO  L94    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2019-11-07 04:09:18,526 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2019-11-07 04:09:19,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2019-11-07 04:09:19,077 INFO  L337   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724606695]
[2019-11-07 04:09:19,078 INFO  L218   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-11-07 04:09:19,078 INFO  L231   FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26
[2019-11-07 04:09:19,078 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379605713]
[2019-11-07 04:09:19,079 INFO  L442      AbstractCegarLoop]: Interpolant automaton has 26 states
[2019-11-07 04:09:19,079 INFO  L141   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN
[2019-11-07 04:09:19,080 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2019-11-07 04:09:19,080 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=552, Unknown=0, NotChecked=0, Total=650
[2019-11-07 04:09:19,080 INFO  L87              Difference]: Start difference. First operand 1282 states and 1890 transitions. Second operand 26 states.