java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37_true-unreach-call_false-termination.c


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


This is Ultimate 0.1.23-1dbac8b
[2018-10-27 06:30:06,282 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-27 06:30:06,284 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-27 06:30:06,303 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-27 06:30:06,303 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-27 06:30:06,304 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-27 06:30:06,305 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-10-27 06:30:06,308 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-10-27 06:30:06,310 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-10-27 06:30:06,312 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-10-27 06:30:06,313 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-27 06:30:06,313 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-27 06:30:06,323 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-27 06:30:06,324 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-27 06:30:06,325 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-27 06:30:06,327 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-27 06:30:06,328 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-27 06:30:06,331 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-27 06:30:06,333 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-27 06:30:06,336 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-27 06:30:06,337 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-27 06:30:06,340 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-27 06:30:06,343 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-10-27 06:30:06,343 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-10-27 06:30:06,344 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-27 06:30:06,344 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-27 06:30:06,346 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-27 06:30:06,346 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-10-27 06:30:06,348 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-10-27 06:30:06,349 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-10-27 06:30:06,352 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-10-27 06:30:06,352 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-10-27 06:30:06,353 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-10-27 06:30:06,353 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-10-27 06:30:06,356 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-10-27 06:30:06,357 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-27 06:30:06,357 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf
[2018-10-27 06:30:06,385 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-27 06:30:06,385 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-27 06:30:06,386 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-27 06:30:06,386 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-10-27 06:30:06,386 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-10-27 06:30:06,387 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-10-27 06:30:06,387 INFO  L133        SettingsManager]:  * Explicit value domain=true
[2018-10-27 06:30:06,387 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-10-27 06:30:06,387 INFO  L133        SettingsManager]:  * Octagon Domain=false
[2018-10-27 06:30:06,387 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-10-27 06:30:06,388 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-10-27 06:30:06,388 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-10-27 06:30:06,388 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-10-27 06:30:06,388 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-10-27 06:30:06,389 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-27 06:30:06,389 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-27 06:30:06,389 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-27 06:30:06,389 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-27 06:30:06,390 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-27 06:30:06,390 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-27 06:30:06,390 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-27 06:30:06,390 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-27 06:30:06,391 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-27 06:30:06,391 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-27 06:30:06,391 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-27 06:30:06,391 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-27 06:30:06,391 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-27 06:30:06,391 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-27 06:30:06,392 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-27 06:30:06,394 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-27 06:30:06,394 INFO  L133        SettingsManager]:  * Trace refinement strategy=TAIPAN
[2018-10-27 06:30:06,394 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-27 06:30:06,394 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-27 06:30:06,394 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-27 06:30:06,395 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-27 06:30:06,395 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-10-27 06:30:06,458 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-27 06:30:06,474 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-27 06:30:06,479 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-27 06:30:06,481 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-27 06:30:06,481 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-27 06:30:06,482 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label37_true-unreach-call_false-termination.c
[2018-10-27 06:30:06,543 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f4065a8b/22ee7d4aaadc45309baf45662cd7846f/FLAG49268e424
[2018-10-27 06:30:07,287 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-27 06:30:07,288 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label37_true-unreach-call_false-termination.c
[2018-10-27 06:30:07,328 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f4065a8b/22ee7d4aaadc45309baf45662cd7846f/FLAG49268e424
[2018-10-27 06:30:07,349 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7f4065a8b/22ee7d4aaadc45309baf45662cd7846f
[2018-10-27 06:30:07,362 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-27 06:30:07,365 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-27 06:30:07,368 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-27 06:30:07,368 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-27 06:30:07,372 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-27 06:30:07,373 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:07" (1/1) ...
[2018-10-27 06:30:07,377 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78a9863c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:07, skipping insertion in model container
[2018-10-27 06:30:07,377 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:30:07" (1/1) ...
[2018-10-27 06:30:07,389 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-27 06:30:07,566 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-27 06:30:09,008 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-27 06:30:09,013 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-27 06:30:09,692 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-27 06:30:09,730 INFO  L193         MainTranslator]: Completed translation
[2018-10-27 06:30:09,731 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09 WrapperNode
[2018-10-27 06:30:09,731 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-27 06:30:09,732 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-27 06:30:09,732 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-27 06:30:09,732 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-27 06:30:09,742 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:09,800 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,133 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-27 06:30:10,133 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-27 06:30:10,133 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-27 06:30:10,134 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-27 06:30:10,145 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,146 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,160 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,161 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,265 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,304 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,343 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
[2018-10-27 06:30:10,382 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-27 06:30:10,383 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-27 06:30:10,383 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-27 06:30:10,383 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-27 06:30:10,384 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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
[2018-10-27 06:30:10,454 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-10-27 06:30:10,454 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-10-27 06:30:10,454 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2018-10-27 06:30:10,454 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2018-10-27 06:30:10,455 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2018-10-27 06:30:10,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2018-10-27 06:30:10,455 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2018-10-27 06:30:10,455 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2018-10-27 06:30:10,455 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2018-10-27 06:30:10,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-10-27 06:30:10,456 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-27 06:30:10,456 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-27 06:30:10,456 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-10-27 06:30:10,457 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-10-27 06:30:21,152 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-27 06:30:21,153 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:21 BoogieIcfgContainer
[2018-10-27 06:30:21,153 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-27 06:30:21,154 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-27 06:30:21,154 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-27 06:30:21,158 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-27 06:30:21,158 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:30:07" (1/3) ...
[2018-10-27 06:30:21,159 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee081b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:21, skipping insertion in model container
[2018-10-27 06:30:21,159 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:30:09" (2/3) ...
[2018-10-27 06:30:21,159 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee081b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:30:21, skipping insertion in model container
[2018-10-27 06:30:21,160 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:30:21" (3/3) ...
[2018-10-27 06:30:21,165 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem04_label37_true-unreach-call_false-termination.c
[2018-10-27 06:30:21,176 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-27 06:30:21,187 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-27 06:30:21,205 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-27 06:30:21,261 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-27 06:30:21,261 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-27 06:30:21,261 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-27 06:30:21,261 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-27 06:30:21,261 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-27 06:30:21,262 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-27 06:30:21,262 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-27 06:30:21,262 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-27 06:30:21,304 INFO  L276                IsEmpty]: Start isEmpty. Operand 907 states.
[2018-10-27 06:30:21,364 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 829
[2018-10-27 06:30:21,365 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:30:21,367 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:30:21,369 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:30:21,375 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:30:21,376 INFO  L82        PathProgramCache]: Analyzing trace with hash 1856499550, now seen corresponding path program 1 times
[2018-10-27 06:30:21,379 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:30:21,433 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:21,433 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:30:21,433 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:21,434 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:30:21,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:30:22,750 WARN  L179               SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-27 06:30:23,887 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-27 06:30:23,889 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-27 06:30:23,889 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-27 06:30:23,890 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:30:23,898 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-27 06:30:23,910 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-27 06:30:23,911 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-27 06:30:23,913 INFO  L87              Difference]: Start difference. First operand 907 states. Second operand 3 states.
[2018-10-27 06:30:30,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:30:30,268 INFO  L93              Difference]: Finished difference Result 2647 states and 5102 transitions.
[2018-10-27 06:30:30,268 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-27 06:30:30,270 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 828
[2018-10-27 06:30:30,275 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:30:30,312 INFO  L225             Difference]: With dead ends: 2647
[2018-10-27 06:30:30,312 INFO  L226             Difference]: Without dead ends: 1738
[2018-10-27 06:30:30,323 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 5 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-27 06:30:30,341 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1738 states.
[2018-10-27 06:30:30,477 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1738.
[2018-10-27 06:30:30,479 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1738 states.
[2018-10-27 06:30:30,489 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 3145 transitions.
[2018-10-27 06:30:30,491 INFO  L78                 Accepts]: Start accepts. Automaton has 1738 states and 3145 transitions. Word has length 828
[2018-10-27 06:30:30,493 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:30:30,493 INFO  L481      AbstractCegarLoop]: Abstraction has 1738 states and 3145 transitions.
[2018-10-27 06:30:30,494 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-27 06:30:30,494 INFO  L276                IsEmpty]: Start isEmpty. Operand 1738 states and 3145 transitions.
[2018-10-27 06:30:30,525 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 838
[2018-10-27 06:30:30,526 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:30:30,527 INFO  L375         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:30:30,527 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:30:30,527 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:30:30,528 INFO  L82        PathProgramCache]: Analyzing trace with hash -784894659, now seen corresponding path program 1 times
[2018-10-27 06:30:30,528 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:30:30,529 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:30,530 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:30:30,530 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:30,530 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:30:30,693 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:30:32,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-27 06:30:32,063 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-27 06:30:32,063 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-27 06:30:32,063 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:30:32,066 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-27 06:30:32,066 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-27 06:30:32,066 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-27 06:30:32,067 INFO  L87              Difference]: Start difference. First operand 1738 states and 3145 transitions. Second operand 4 states.
[2018-10-27 06:30:41,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:30:41,642 INFO  L93              Difference]: Finished difference Result 6810 states and 12572 transitions.
[2018-10-27 06:30:41,642 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-27 06:30:41,643 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 837
[2018-10-27 06:30:41,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:30:41,673 INFO  L225             Difference]: With dead ends: 6810
[2018-10-27 06:30:41,673 INFO  L226             Difference]: Without dead ends: 5078
[2018-10-27 06:30:41,680 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-27 06:30:41,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5078 states.
[2018-10-27 06:30:41,788 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5078 to 5078.
[2018-10-27 06:30:41,788 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5078 states.
[2018-10-27 06:30:41,806 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5078 states to 5078 states and 8163 transitions.
[2018-10-27 06:30:41,807 INFO  L78                 Accepts]: Start accepts. Automaton has 5078 states and 8163 transitions. Word has length 837
[2018-10-27 06:30:41,809 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:30:41,809 INFO  L481      AbstractCegarLoop]: Abstraction has 5078 states and 8163 transitions.
[2018-10-27 06:30:41,810 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-27 06:30:41,810 INFO  L276                IsEmpty]: Start isEmpty. Operand 5078 states and 8163 transitions.
[2018-10-27 06:30:41,838 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 845
[2018-10-27 06:30:41,838 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:30:41,839 INFO  L375         BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:30:41,839 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:30:41,839 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:30:41,840 INFO  L82        PathProgramCache]: Analyzing trace with hash 859250761, now seen corresponding path program 1 times
[2018-10-27 06:30:41,841 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:30:41,842 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:41,843 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:30:41,843 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:41,843 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:30:41,919 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:30:42,218 WARN  L179               SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4
[2018-10-27 06:30:43,101 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-27 06:30:43,101 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-27 06:30:43,101 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-10-27 06:30:43,102 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:30:43,105 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-27 06:30:43,105 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-27 06:30:43,105 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-10-27 06:30:43,105 INFO  L87              Difference]: Start difference. First operand 5078 states and 8163 transitions. Second operand 6 states.
[2018-10-27 06:30:51,658 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:30:51,659 INFO  L93              Difference]: Finished difference Result 12919 states and 20986 transitions.
[2018-10-27 06:30:51,662 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-27 06:30:51,662 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 844
[2018-10-27 06:30:51,662 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:30:51,711 INFO  L225             Difference]: With dead ends: 12919
[2018-10-27 06:30:51,711 INFO  L226             Difference]: Without dead ends: 7847
[2018-10-27 06:30:51,726 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-10-27 06:30:51,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7847 states.
[2018-10-27 06:30:51,952 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7847 to 7781.
[2018-10-27 06:30:51,952 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 7781 states.
[2018-10-27 06:30:51,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 7781 states to 7781 states and 12073 transitions.
[2018-10-27 06:30:51,973 INFO  L78                 Accepts]: Start accepts. Automaton has 7781 states and 12073 transitions. Word has length 844
[2018-10-27 06:30:51,974 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:30:51,974 INFO  L481      AbstractCegarLoop]: Abstraction has 7781 states and 12073 transitions.
[2018-10-27 06:30:51,974 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-27 06:30:51,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 7781 states and 12073 transitions.
[2018-10-27 06:30:52,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 865
[2018-10-27 06:30:52,006 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:30:52,006 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:30:52,007 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:30:52,007 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:30:52,007 INFO  L82        PathProgramCache]: Analyzing trace with hash 1585933612, now seen corresponding path program 1 times
[2018-10-27 06:30:52,008 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:30:52,009 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:52,009 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:30:52,009 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:30:52,009 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:30:52,075 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:30:53,166 INFO  L134       CoverageAnalysis]: Checked inductivity of 46 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-27 06:30:53,166 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-27 06:30:53,166 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-27 06:30:53,168 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 865 with the following transitions: 
[2018-10-27 06:30:53,177 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [837], [839], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2653], [2654], [2658], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541]
[2018-10-27 06:30:53,324 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain]
[2018-10-27 06:30:53,324 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-27 06:30:56,498 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-10-27 06:30:56,500 INFO  L272    AbstractInterpreter]: Visited 832 different actions 1658 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables.
[2018-10-27 06:30:56,544 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:30:56,544 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-10-27 06:30:58,576 INFO  L227   lantSequenceWeakener]: Weakened 861 states. On average, predicates are now at 78.7% of their original sizes.
[2018-10-27 06:30:58,576 INFO  L413   sIntCurrentIteration]: Unifying AI predicates
[2018-10-27 06:30:59,099 INFO  L415   sIntCurrentIteration]: We unified 863 AI predicates to 863
[2018-10-27 06:30:59,099 INFO  L424   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-10-27 06:30:59,100 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-27 06:30:59,101 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20
[2018-10-27 06:30:59,101 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:30:59,102 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-10-27 06:30:59,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-10-27 06:30:59,102 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2018-10-27 06:30:59,103 INFO  L87              Difference]: Start difference. First operand 7781 states and 12073 transitions. Second operand 16 states.
[2018-10-27 06:31:52,601 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:31:52,601 INFO  L93              Difference]: Finished difference Result 19045 states and 28870 transitions.
[2018-10-27 06:31:52,602 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. 
[2018-10-27 06:31:52,602 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 864
[2018-10-27 06:31:52,602 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:31:52,655 INFO  L225             Difference]: With dead ends: 19045
[2018-10-27 06:31:52,656 INFO  L226             Difference]: Without dead ends: 11270
[2018-10-27 06:31:52,677 INFO  L605         BasicCegarLoop]: 2 DeclaredPredicates, 888 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640
[2018-10-27 06:31:52,686 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11270 states.
[2018-10-27 06:31:52,894 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11270 to 11230.
[2018-10-27 06:31:52,894 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11230 states.
[2018-10-27 06:31:52,912 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11230 states to 11230 states and 15712 transitions.
[2018-10-27 06:31:52,913 INFO  L78                 Accepts]: Start accepts. Automaton has 11230 states and 15712 transitions. Word has length 864
[2018-10-27 06:31:52,913 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:31:52,913 INFO  L481      AbstractCegarLoop]: Abstraction has 11230 states and 15712 transitions.
[2018-10-27 06:31:52,913 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-10-27 06:31:52,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 11230 states and 15712 transitions.
[2018-10-27 06:31:52,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 872
[2018-10-27 06:31:52,948 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:31:52,949 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:31:52,949 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:31:52,950 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:31:52,950 INFO  L82        PathProgramCache]: Analyzing trace with hash -551654524, now seen corresponding path program 1 times
[2018-10-27 06:31:52,950 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:31:52,951 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:31:52,951 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:31:52,952 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:31:52,952 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:31:53,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:31:53,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-27 06:31:53,912 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-27 06:31:53,912 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-27 06:31:53,913 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 872 with the following transitions: 
[2018-10-27 06:31:53,914 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [837], [839], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2653], [2654], [2658], [2662], [2666], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2697], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541]
[2018-10-27 06:31:53,937 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain]
[2018-10-27 06:31:53,937 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-27 06:31:56,096 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-10-27 06:31:56,096 INFO  L272    AbstractInterpreter]: Visited 832 different actions 1658 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 44 variables.
[2018-10-27 06:31:56,134 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:31:56,134 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-10-27 06:31:57,167 INFO  L227   lantSequenceWeakener]: Weakened 868 states. On average, predicates are now at 80.1% of their original sizes.
[2018-10-27 06:31:57,167 INFO  L413   sIntCurrentIteration]: Unifying AI predicates
[2018-10-27 06:31:57,458 INFO  L415   sIntCurrentIteration]: We unified 870 AI predicates to 870
[2018-10-27 06:31:57,458 INFO  L424   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-10-27 06:31:57,459 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-27 06:31:57,459 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20
[2018-10-27 06:31:57,459 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:31:57,460 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-10-27 06:31:57,460 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-10-27 06:31:57,460 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2018-10-27 06:31:57,461 INFO  L87              Difference]: Start difference. First operand 11230 states and 15712 transitions. Second operand 16 states.
[2018-10-27 06:32:34,602 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:32:34,603 INFO  L93              Difference]: Finished difference Result 23383 states and 32755 transitions.
[2018-10-27 06:32:34,603 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. 
[2018-10-27 06:32:34,603 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 871
[2018-10-27 06:32:34,603 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:32:34,637 INFO  L225             Difference]: With dead ends: 23383
[2018-10-27 06:32:34,637 INFO  L226             Difference]: Without dead ends: 12994
[2018-10-27 06:32:34,658 INFO  L605         BasicCegarLoop]: 2 DeclaredPredicates, 895 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=225, Invalid=1415, Unknown=0, NotChecked=0, Total=1640
[2018-10-27 06:32:34,668 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12994 states.
[2018-10-27 06:32:34,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12994 to 12971.
[2018-10-27 06:32:34,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12971 states.
[2018-10-27 06:32:34,887 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12971 states to 12971 states and 17529 transitions.
[2018-10-27 06:32:34,888 INFO  L78                 Accepts]: Start accepts. Automaton has 12971 states and 17529 transitions. Word has length 871
[2018-10-27 06:32:34,888 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:32:34,888 INFO  L481      AbstractCegarLoop]: Abstraction has 12971 states and 17529 transitions.
[2018-10-27 06:32:34,889 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-10-27 06:32:34,889 INFO  L276                IsEmpty]: Start isEmpty. Operand 12971 states and 17529 transitions.
[2018-10-27 06:32:34,918 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 930
[2018-10-27 06:32:34,919 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:32:34,920 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:32:34,920 INFO  L424      AbstractCegarLoop]: === Iteration 6 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:32:34,920 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:32:34,921 INFO  L82        PathProgramCache]: Analyzing trace with hash -865094649, now seen corresponding path program 1 times
[2018-10-27 06:32:34,921 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:32:34,922 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:32:34,922 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:32:34,922 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:32:34,922 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:32:34,990 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:32:35,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 148 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2018-10-27 06:32:35,925 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-27 06:32:35,926 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-27 06:32:35,926 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 930 with the following transitions: 
[2018-10-27 06:32:35,927 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [837], [839], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2654], [2658], [2661], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2841], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541]
[2018-10-27 06:32:35,944 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain]
[2018-10-27 06:32:35,944 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-27 06:32:38,335 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-10-27 06:32:38,335 INFO  L272    AbstractInterpreter]: Visited 833 different actions 2494 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 44 variables.
[2018-10-27 06:32:38,339 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:32:38,339 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-10-27 06:32:39,286 INFO  L227   lantSequenceWeakener]: Weakened 926 states. On average, predicates are now at 78.7% of their original sizes.
[2018-10-27 06:32:39,286 INFO  L413   sIntCurrentIteration]: Unifying AI predicates
[2018-10-27 06:32:39,564 INFO  L415   sIntCurrentIteration]: We unified 928 AI predicates to 928
[2018-10-27 06:32:39,565 INFO  L424   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-10-27 06:32:39,565 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-27 06:32:39,565 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20
[2018-10-27 06:32:39,565 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-27 06:32:39,566 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-10-27 06:32:39,566 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-10-27 06:32:39,567 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240
[2018-10-27 06:32:39,567 INFO  L87              Difference]: Start difference. First operand 12971 states and 17529 transitions. Second operand 16 states.
[2018-10-27 06:33:46,942 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-27 06:33:46,942 INFO  L93              Difference]: Finished difference Result 28845 states and 39497 transitions.
[2018-10-27 06:33:46,942 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. 
[2018-10-27 06:33:46,942 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 929
[2018-10-27 06:33:46,943 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-27 06:33:46,988 INFO  L225             Difference]: With dead ends: 28845
[2018-10-27 06:33:46,988 INFO  L226             Difference]: Without dead ends: 16715
[2018-10-27 06:33:47,015 INFO  L605         BasicCegarLoop]: 2 DeclaredPredicates, 956 GetRequests, 914 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 409 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=246, Invalid=1646, Unknown=0, NotChecked=0, Total=1892
[2018-10-27 06:33:47,030 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16715 states.
[2018-10-27 06:33:47,260 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16715 to 16668.
[2018-10-27 06:33:47,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16668 states.
[2018-10-27 06:33:47,288 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16668 states to 16668 states and 21723 transitions.
[2018-10-27 06:33:47,288 INFO  L78                 Accepts]: Start accepts. Automaton has 16668 states and 21723 transitions. Word has length 929
[2018-10-27 06:33:47,289 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-27 06:33:47,289 INFO  L481      AbstractCegarLoop]: Abstraction has 16668 states and 21723 transitions.
[2018-10-27 06:33:47,289 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-10-27 06:33:47,289 INFO  L276                IsEmpty]: Start isEmpty. Operand 16668 states and 21723 transitions.
[2018-10-27 06:33:47,329 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1012
[2018-10-27 06:33:47,330 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-27 06:33:47,331 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-27 06:33:47,331 INFO  L424      AbstractCegarLoop]: === Iteration 7 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-27 06:33:47,331 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:33:47,332 INFO  L82        PathProgramCache]: Analyzing trace with hash 783375915, now seen corresponding path program 1 times
[2018-10-27 06:33:47,332 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-27 06:33:47,333 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:33:47,333 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:33:47,333 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-27 06:33:47,333 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-27 06:33:47,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:33:47,724 WARN  L179               SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4
[2018-10-27 06:33:48,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 381 backedges. 206 proven. 129 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked.
[2018-10-27 06:33:48,803 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-27 06:33:48,803 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-27 06:33:48,804 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 1012 with the following transitions: 
[2018-10-27 06:33:48,805 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [270], [274], [278], [282], [286], [290], [294], [298], [302], [306], [310], [314], [318], [322], [326], [330], [334], [338], [342], [346], [350], [354], [358], [362], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [529], [537], [545], [553], [561], [569], [577], [585], [593], [601], [609], [617], [625], [633], [641], [649], [657], [665], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [837], [839], [854], [858], [862], [866], [870], [874], [878], [882], [886], [890], [894], [898], [902], [906], [910], [914], [918], [922], [926], [930], [934], [938], [942], [946], [950], [954], [958], [962], [966], [970], [974], [978], [982], [986], [990], [994], [998], [1002], [1006], [1010], [1014], [1018], [1022], [1026], [1030], [1034], [1038], [1042], [1046], [1050], [1054], [1058], [1062], [1066], [1070], [1074], [1078], [1082], [1086], [1090], [1094], [1098], [1102], [1106], [1110], [1114], [1118], [1122], [1126], [1130], [1134], [1138], [1142], [1146], [1150], [1154], [1158], [1162], [1166], [1170], [1174], [1178], [1182], [1186], [1190], [1194], [1198], [1202], [1206], [1210], [1214], [1218], [1222], [1226], [1230], [1234], [1238], [1242], [1246], [1250], [1254], [1258], [1262], [1266], [1270], [1274], [1278], [1282], [1286], [1290], [1294], [1298], [1302], [1306], [1310], [1314], [1318], [1322], [1326], [1330], [1334], [1338], [1342], [1346], [1350], [1354], [1358], [1362], [1366], [1370], [1374], [1378], [1382], [1386], [1390], [1394], [1398], [1402], [1406], [1410], [1414], [1418], [1422], [1426], [1430], [1434], [1438], [1442], [1446], [1450], [1454], [1458], [1462], [1466], [1470], [1474], [1478], [1482], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1574], [1578], [1582], [1586], [1590], [1594], [1598], [1602], [1606], [1610], [1614], [1618], [1622], [1626], [1630], [1634], [1638], [1642], [1646], [1650], [1654], [1658], [1662], [1666], [1670], [1674], [1678], [1682], [1686], [1690], [1694], [1698], [1702], [1706], [1710], [1714], [1718], [1722], [1726], [1730], [1734], [1738], [1742], [1746], [1750], [1754], [1758], [1762], [1766], [1770], [1774], [1778], [1782], [1786], [1790], [1794], [1798], [1802], [1806], [1810], [1814], [1818], [1822], [1826], [1830], [1834], [1838], [1842], [1846], [1850], [1854], [1858], [1862], [1866], [1870], [1874], [1878], [1882], [1886], [1890], [1894], [1898], [1902], [1906], [1910], [1914], [1918], [1922], [1926], [1930], [1934], [1938], [1942], [1946], [1950], [1954], [1958], [1962], [1966], [1970], [1974], [1978], [1982], [1986], [1990], [1994], [1998], [2002], [2006], [2010], [2014], [2018], [2022], [2026], [2030], [2034], [2038], [2042], [2046], [2050], [2054], [2058], [2062], [2066], [2070], [2074], [2078], [2082], [2086], [2090], [2094], [2098], [2102], [2106], [2110], [2114], [2118], [2122], [2126], [2130], [2134], [2138], [2142], [2146], [2150], [2154], [2158], [2162], [2166], [2170], [2174], [2178], [2182], [2186], [2190], [2194], [2198], [2202], [2206], [2210], [2214], [2218], [2222], [2226], [2230], [2234], [2238], [2242], [2246], [2250], [2254], [2258], [2262], [2266], [2270], [2274], [2278], [2282], [2286], [2290], [2294], [2298], [2302], [2306], [2310], [2314], [2318], [2322], [2326], [2330], [2334], [2338], [2342], [2346], [2350], [2354], [2358], [2362], [2366], [2370], [2374], [2378], [2382], [2386], [2390], [2394], [2398], [2402], [2406], [2410], [2414], [2418], [2422], [2426], [2430], [2434], [2438], [2442], [2446], [2450], [2454], [2458], [2462], [2466], [2470], [2474], [2478], [2482], [2486], [2490], [2494], [2498], [2502], [2506], [2510], [2514], [2518], [2522], [2526], [2530], [2534], [2538], [2542], [2546], [2550], [2554], [2558], [2562], [2566], [2570], [2574], [2578], [2582], [2586], [2590], [2594], [2598], [2602], [2606], [2610], [2614], [2618], [2622], [2626], [2630], [2634], [2638], [2642], [2646], [2650], [2653], [2654], [2658], [2661], [2662], [2666], [2669], [2670], [2674], [2678], [2682], [2686], [2690], [2694], [2698], [2702], [2706], [2710], [2714], [2718], [2722], [2726], [2730], [2734], [2738], [2742], [2746], [2750], [2754], [2758], [2762], [2766], [2770], [2774], [2778], [2782], [2786], [2790], [2794], [2798], [2802], [2806], [2809], [2810], [2814], [2818], [2822], [2826], [2830], [2834], [2838], [2842], [2846], [2850], [2854], [2858], [2862], [2866], [2870], [2874], [2878], [2882], [2885], [2886], [2890], [2894], [2898], [2902], [2906], [2910], [2914], [2918], [2922], [2926], [2930], [2934], [2938], [2942], [2946], [2950], [2954], [2958], [2962], [2966], [2970], [2974], [2978], [2982], [2986], [2990], [2994], [2998], [3002], [3006], [3010], [3014], [3018], [3022], [3026], [3030], [3034], [3038], [3042], [3046], [3050], [3054], [3058], [3062], [3066], [3070], [3074], [3078], [3082], [3086], [3090], [3094], [3098], [3102], [3106], [3110], [3114], [3118], [3122], [3126], [3130], [3134], [3138], [3142], [3146], [3150], [3154], [3158], [3162], [3166], [3170], [3174], [3178], [3182], [3186], [3190], [3194], [3198], [3202], [3206], [3210], [3214], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3298], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3354], [3358], [3362], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3450], [3454], [3458], [3462], [3466], [3470], [3474], [3478], [3482], [3486], [3490], [3494], [3498], [3502], [3505], [3509], [3513], [3519], [3523], [3525], [3530], [3532], [3534], [3536], [3537], [3538], [3540], [3541]
[2018-10-27 06:33:48,822 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain]
[2018-10-27 06:33:48,822 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-27 06:33:51,586 INFO  L263    AbstractInterpreter]: Some error location(s) were reachable
[2018-10-27 06:33:51,586 INFO  L272    AbstractInterpreter]: Visited 836 different actions 3344 times. Merged at 9 different actions 36 times. Widened at 1 different actions 1 times. Found 8 fixpoints after 2 different actions. Largest state had 44 variables.
[2018-10-27 06:33:51,593 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-27 06:33:51,594 INFO  L422   seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown
[2018-10-27 06:33:51,594 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-27 06:33:51,594 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-27 06:33:51,604 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-27 06:33:51,604 INFO  L288   anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-10-27 06:33:51,953 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-27 06:33:51,996 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-27 06:33:52,891 INFO  L134       CoverageAnalysis]: Checked inductivity of 381 backedges. 281 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked.
[2018-10-27 06:33:52,891 INFO  L316         TraceCheckSpWp]: Computing backward predicates...
Received shutdown request...
Cannot interrupt operation gracefully because timeout expired. Forcing shutdown