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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label18_false-unreach-call.c
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This is Ultimate 0.1.23-0fd1304
[2018-10-23 17:22:12,410 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-10-23 17:22:12,412 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-23 17:22:12,424 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-23 17:22:12,424 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-23 17:22:12,426 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-23 17:22:12,427 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-10-23 17:22:12,429 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
[2018-10-23 17:22:12,430 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-10-23 17:22:12,431 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-10-23 17:22:12,432 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-23 17:22:12,432 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-23 17:22:12,433 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-23 17:22:12,434 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-23 17:22:12,435 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-23 17:22:12,436 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-23 17:22:12,437 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-23 17:22:12,439 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-23 17:22:12,441 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-23 17:22:12,443 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-23 17:22:12,444 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-23 17:22:12,445 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-23 17:22:12,448 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-10-23 17:22:12,448 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-10-23 17:22:12,448 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-23 17:22:12,449 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-23 17:22:12,450 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-23 17:22:12,451 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values
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[2018-10-23 17:22:12,453 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2018-10-23 17:22:12,455 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values
[2018-10-23 17:22:12,458 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values
[2018-10-23 17:22:12,459 INFO L181 SettingsManager]: Finished resetting all preferences to default values...
[2018-10-23 17:22:12,459 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-10-23 17:22:12,475 INFO L110 SettingsManager]: Loading preferences was successful
[2018-10-23 17:22:12,475 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-23 17:22:12,476 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-23 17:22:12,476 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-10-23 17:22:12,477 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-23 17:22:12,477 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-10-23 17:22:12,477 INFO L133 SettingsManager]: * Use SBE=true
[2018-10-23 17:22:12,478 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-23 17:22:12,478 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-10-23 17:22:12,478 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-10-23 17:22:12,478 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-10-23 17:22:12,478 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-23 17:22:12,479 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-10-23 17:22:12,479 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-10-23 17:22:12,479 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-10-23 17:22:12,479 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-23 17:22:12,479 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-10-23 17:22:12,480 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-10-23 17:22:12,480 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-10-23 17:22:12,480 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-23 17:22:12,480 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-23 17:22:12,480 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-23 17:22:12,481 INFO L133 SettingsManager]: * To the following directory=dump/
[2018-10-23 17:22:12,524 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-23 17:22:12,537 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-23 17:22:12,541 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-23 17:22:12,543 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-10-23 17:22:12,543 INFO L276 PluginConnector]: CDTParser initialized
[2018-10-23 17:22:12,544 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label18_false-unreach-call.c
[2018-10-23 17:22:12,602 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/980e9b9f4/294d73e2d23c4b2aaa46639a9fb70bc5/FLAG35e59ecf1
[2018-10-23 17:22:13,546 INFO L298 CDTParser]: Found 1 translation units.
[2018-10-23 17:22:13,548 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem05_label18_false-unreach-call.c
[2018-10-23 17:22:13,596 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/980e9b9f4/294d73e2d23c4b2aaa46639a9fb70bc5/FLAG35e59ecf1
[2018-10-23 17:22:13,614 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/980e9b9f4/294d73e2d23c4b2aaa46639a9fb70bc5
[2018-10-23 17:22:13,626 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-23 17:22:13,628 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-23 17:22:13,629 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-23 17:22:13,630 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-23 17:22:13,635 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-23 17:22:13,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:22:13" (1/1) ...
[2018-10-23 17:22:13,639 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e7fca2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:13, skipping insertion in model container
[2018-10-23 17:22:13,639 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:22:13" (1/1) ...
[2018-10-23 17:22:13,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2018-10-23 17:22:13,951 INFO L174 MainTranslator]: Built tables and reachable declarations
[2018-10-23 17:22:16,111 INFO L202 PostProcessor]: Analyzing one entry point: main
[2018-10-23 17:22:16,118 INFO L189 MainTranslator]: Completed pre-run
[2018-10-23 17:22:17,262 INFO L202 PostProcessor]: Analyzing one entry point: main
[2018-10-23 17:22:17,334 INFO L193 MainTranslator]: Completed translation
[2018-10-23 17:22:17,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17 WrapperNode
[2018-10-23 17:22:17,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-23 17:22:17,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-23 17:22:17,336 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-23 17:22:17,336 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-23 17:22:17,346 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:17,432 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-23 17:22:18,169 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-23 17:22:18,169 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-23 17:22:18,170 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-10-23 17:22:18,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,224 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,225 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,356 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,414 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (1/1) ...
[2018-10-23 17:22:18,536 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-23 17:22:18,537 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-23 17:22:18,537 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-10-23 17:22:18,537 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-10-23 17:22:18,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (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
[2018-10-23 17:22:18,606 INFO L130 BoogieDeclarations]: Found specification of procedure exit
[2018-10-23 17:22:18,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-23 17:22:18,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-23 17:22:34,097 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-23 17:22:34,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:22:34 BoogieIcfgContainer
[2018-10-23 17:22:34,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-23 17:22:34,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-23 17:22:34,099 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-10-23 17:22:34,102 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-10-23 17:22:34,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:22:13" (1/3) ...
[2018-10-23 17:22:34,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b158880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:22:34, skipping insertion in model container
[2018-10-23 17:22:34,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:22:17" (2/3) ...
[2018-10-23 17:22:34,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b158880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:22:34, skipping insertion in model container
[2018-10-23 17:22:34,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:22:34" (3/3) ...
[2018-10-23 17:22:34,106 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label18_false-unreach-call.c
[2018-10-23 17:22:34,117 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-23 17:22:34,128 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-23 17:22:34,147 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-23 17:22:34,213 INFO L135 ementStrategyFactory]: Using default assertion order modulation
[2018-10-23 17:22:34,214 INFO L382 AbstractCegarLoop]: Interprodecural is true
[2018-10-23 17:22:34,214 INFO L383 AbstractCegarLoop]: Hoare is true
[2018-10-23 17:22:34,214 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-23 17:22:34,214 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-23 17:22:34,214 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-23 17:22:34,215 INFO L387 AbstractCegarLoop]: Difference is false
[2018-10-23 17:22:34,215 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-23 17:22:34,215 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-23 17:22:34,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2186 states.
[2018-10-23 17:22:34,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1644
[2018-10-23 17:22:34,412 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:22:34,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:22:34,419 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:22:34,425 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:22:34,427 INFO L82 PathProgramCache]: Analyzing trace with hash -141034390, now seen corresponding path program 1 times
[2018-10-23 17:22:34,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:22:34,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:22:34,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:22:34,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:22:34,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:22:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:22:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 17:22:39,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:22:39,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 17:22:39,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:22:39,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:22:39,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:22:39,273 INFO L87 Difference]: Start difference. First operand 2186 states. Second operand 4 states.
[2018-10-23 17:23:01,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:23:01,431 INFO L93 Difference]: Finished difference Result 8016 states and 15331 transitions.
[2018-10-23 17:23:01,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:23:01,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1643
[2018-10-23 17:23:01,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:23:01,510 INFO L225 Difference]: With dead ends: 8016
[2018-10-23 17:23:01,510 INFO L226 Difference]: Without dead ends: 5823
[2018-10-23 17:23:01,521 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:01,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5823 states.
[2018-10-23 17:23:01,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5823 to 5690.
[2018-10-23 17:23:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5690 states.
[2018-10-23 17:23:01,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5690 states to 5690 states and 9803 transitions.
[2018-10-23 17:23:01,775 INFO L78 Accepts]: Start accepts. Automaton has 5690 states and 9803 transitions. Word has length 1643
[2018-10-23 17:23:01,780 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:23:01,780 INFO L481 AbstractCegarLoop]: Abstraction has 5690 states and 9803 transitions.
[2018-10-23 17:23:01,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:23:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5690 states and 9803 transitions.
[2018-10-23 17:23:01,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1667
[2018-10-23 17:23:01,928 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:23:01,930 INFO L375 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1]
[2018-10-23 17:23:01,930 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:23:01,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:23:01,932 INFO L82 PathProgramCache]: Analyzing trace with hash 668190239, now seen corresponding path program 1 times
[2018-10-23 17:23:01,932 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:23:01,932 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:23:01,933 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:01,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:23:01,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:23:03,442 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 17:23:03,443 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:23:03,443 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 17:23:03,447 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 17:23:03,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 17:23:03,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:23:03,448 INFO L87 Difference]: Start difference. First operand 5690 states and 9803 transitions. Second operand 3 states.
[2018-10-23 17:23:14,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:23:14,258 INFO L93 Difference]: Finished difference Result 16519 states and 28661 transitions.
[2018-10-23 17:23:14,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-23 17:23:14,259 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1666
[2018-10-23 17:23:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:23:14,316 INFO L225 Difference]: With dead ends: 16519
[2018-10-23 17:23:14,316 INFO L226 Difference]: Without dead ends: 10831
[2018-10-23 17:23:14,327 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:23:14,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10831 states.
[2018-10-23 17:23:14,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10831 to 10826.
[2018-10-23 17:23:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10826 states.
[2018-10-23 17:23:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10826 states to 10826 states and 16325 transitions.
[2018-10-23 17:23:14,535 INFO L78 Accepts]: Start accepts. Automaton has 10826 states and 16325 transitions. Word has length 1666
[2018-10-23 17:23:14,535 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:23:14,535 INFO L481 AbstractCegarLoop]: Abstraction has 10826 states and 16325 transitions.
[2018-10-23 17:23:14,535 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 17:23:14,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10826 states and 16325 transitions.
[2018-10-23 17:23:14,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1675
[2018-10-23 17:23:14,581 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:23:14,582 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:23:14,582 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:23:14,582 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:23:14,583 INFO L82 PathProgramCache]: Analyzing trace with hash 2035349751, now seen corresponding path program 1 times
[2018-10-23 17:23:14,584 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:23:14,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:23:14,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:14,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:23:14,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:14,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:23:15,968 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 17:23:15,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:23:15,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 17:23:15,970 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:23:15,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:23:15,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:15,971 INFO L87 Difference]: Start difference. First operand 10826 states and 16325 transitions. Second operand 4 states.
[2018-10-23 17:23:30,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:23:30,658 INFO L93 Difference]: Finished difference Result 28482 states and 44961 transitions.
[2018-10-23 17:23:30,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:23:30,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1674
[2018-10-23 17:23:30,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:23:30,715 INFO L225 Difference]: With dead ends: 28482
[2018-10-23 17:23:30,715 INFO L226 Difference]: Without dead ends: 17658
[2018-10-23 17:23:30,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:30,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17658 states.
[2018-10-23 17:23:31,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17658 to 17644.
[2018-10-23 17:23:31,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17644 states.
[2018-10-23 17:23:31,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17644 states to 17644 states and 25531 transitions.
[2018-10-23 17:23:31,050 INFO L78 Accepts]: Start accepts. Automaton has 17644 states and 25531 transitions. Word has length 1674
[2018-10-23 17:23:31,050 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:23:31,050 INFO L481 AbstractCegarLoop]: Abstraction has 17644 states and 25531 transitions.
[2018-10-23 17:23:31,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:23:31,050 INFO L276 IsEmpty]: Start isEmpty. Operand 17644 states and 25531 transitions.
[2018-10-23 17:23:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1679
[2018-10-23 17:23:31,111 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:23:31,112 INFO L375 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:23:31,113 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:23:31,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:23:31,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1506327238, now seen corresponding path program 1 times
[2018-10-23 17:23:31,114 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:23:31,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:23:31,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:31,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:23:31,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:23:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-23 17:23:32,614 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:23:32,614 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 17:23:32,616 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:23:32,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:23:32,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:32,617 INFO L87 Difference]: Start difference. First operand 17644 states and 25531 transitions. Second operand 4 states.
[2018-10-23 17:23:46,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:23:46,660 INFO L93 Difference]: Finished difference Result 65867 states and 94906 transitions.
[2018-10-23 17:23:46,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:23:46,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1678
[2018-10-23 17:23:46,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:23:46,745 INFO L225 Difference]: With dead ends: 65867
[2018-10-23 17:23:46,745 INFO L226 Difference]: Without dead ends: 48225
[2018-10-23 17:23:46,776 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:46,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48225 states.
[2018-10-23 17:23:47,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48225 to 48223.
[2018-10-23 17:23:47,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48223 states.
[2018-10-23 17:23:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48223 states to 48223 states and 63983 transitions.
[2018-10-23 17:23:47,406 INFO L78 Accepts]: Start accepts. Automaton has 48223 states and 63983 transitions. Word has length 1678
[2018-10-23 17:23:47,407 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:23:47,407 INFO L481 AbstractCegarLoop]: Abstraction has 48223 states and 63983 transitions.
[2018-10-23 17:23:47,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:23:47,407 INFO L276 IsEmpty]: Start isEmpty. Operand 48223 states and 63983 transitions.
[2018-10-23 17:23:47,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701
[2018-10-23 17:23:47,527 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:23:47,529 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:23:47,529 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:23:47,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:23:47,530 INFO L82 PathProgramCache]: Analyzing trace with hash 2012903569, now seen corresponding path program 1 times
[2018-10-23 17:23:47,530 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:23:47,530 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:23:47,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:47,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:23:47,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:23:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:23:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 74 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2018-10-23 17:23:49,388 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:23:49,388 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 17:23:49,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:23:49,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:23:49,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:23:49,391 INFO L87 Difference]: Start difference. First operand 48223 states and 63983 transitions. Second operand 4 states.
[2018-10-23 17:24:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:24:05,614 INFO L93 Difference]: Finished difference Result 127165 states and 170384 transitions.
[2018-10-23 17:24:05,616 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:24:05,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1700
[2018-10-23 17:24:05,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:24:05,809 INFO L225 Difference]: With dead ends: 127165
[2018-10-23 17:24:05,809 INFO L226 Difference]: Without dead ends: 78944
[2018-10-23 17:24:05,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:24:05,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78944 states.
[2018-10-23 17:24:06,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78944 to 78811.
[2018-10-23 17:24:06,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78811 states.
[2018-10-23 17:24:06,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78811 states to 78811 states and 101809 transitions.
[2018-10-23 17:24:06,698 INFO L78 Accepts]: Start accepts. Automaton has 78811 states and 101809 transitions. Word has length 1700
[2018-10-23 17:24:06,699 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:24:06,699 INFO L481 AbstractCegarLoop]: Abstraction has 78811 states and 101809 transitions.
[2018-10-23 17:24:06,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:24:06,699 INFO L276 IsEmpty]: Start isEmpty. Operand 78811 states and 101809 transitions.
[2018-10-23 17:24:06,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2018-10-23 17:24:06,796 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:24:06,797 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:24:06,797 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:24:06,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:24:06,798 INFO L82 PathProgramCache]: Analyzing trace with hash 799686214, now seen corresponding path program 1 times
[2018-10-23 17:24:06,798 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:24:06,799 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:24:06,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:06,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:24:06,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:24:08,400 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked.
[2018-10-23 17:24:08,400 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:24:08,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 17:24:08,402 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 17:24:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 17:24:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:24:08,403 INFO L87 Difference]: Start difference. First operand 78811 states and 101809 transitions. Second operand 3 states.
[2018-10-23 17:24:17,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:24:17,200 INFO L93 Difference]: Finished difference Result 183098 states and 233694 transitions.
[2018-10-23 17:24:17,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-23 17:24:17,201 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1726
[2018-10-23 17:24:17,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:24:17,319 INFO L225 Difference]: With dead ends: 183098
[2018-10-23 17:24:17,319 INFO L226 Difference]: Without dead ends: 104289
[2018-10-23 17:24:17,367 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:24:17,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104289 states.
[2018-10-23 17:24:18,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104289 to 104289.
[2018-10-23 17:24:18,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104289 states.
[2018-10-23 17:24:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104289 states to 104289 states and 123592 transitions.
[2018-10-23 17:24:18,433 INFO L78 Accepts]: Start accepts. Automaton has 104289 states and 123592 transitions. Word has length 1726
[2018-10-23 17:24:18,433 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:24:18,434 INFO L481 AbstractCegarLoop]: Abstraction has 104289 states and 123592 transitions.
[2018-10-23 17:24:18,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 17:24:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 104289 states and 123592 transitions.
[2018-10-23 17:24:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1809
[2018-10-23 17:24:18,546 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:24:18,548 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:24:18,548 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:24:18,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:24:18,549 INFO L82 PathProgramCache]: Analyzing trace with hash -208978844, now seen corresponding path program 1 times
[2018-10-23 17:24:18,549 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:24:18,549 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:24:18,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:18,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:24:18,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:24:19,598 WARN L179 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12
[2018-10-23 17:24:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 213 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2018-10-23 17:24:21,269 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:24:21,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 17:24:21,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:24:21,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:24:21,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:24:21,271 INFO L87 Difference]: Start difference. First operand 104289 states and 123592 transitions. Second operand 4 states.
[2018-10-23 17:24:38,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:24:38,574 INFO L93 Difference]: Finished difference Result 208690 states and 247379 transitions.
[2018-10-23 17:24:38,574 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:24:38,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1808
[2018-10-23 17:24:38,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:24:38,687 INFO L225 Difference]: With dead ends: 208690
[2018-10-23 17:24:38,687 INFO L226 Difference]: Without dead ends: 104403
[2018-10-23 17:24:38,730 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:24:38,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104403 states.
[2018-10-23 17:24:39,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104403 to 104288.
[2018-10-23 17:24:39,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104288 states.
[2018-10-23 17:24:39,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104288 states to 104288 states and 120867 transitions.
[2018-10-23 17:24:39,663 INFO L78 Accepts]: Start accepts. Automaton has 104288 states and 120867 transitions. Word has length 1808
[2018-10-23 17:24:39,663 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:24:39,663 INFO L481 AbstractCegarLoop]: Abstraction has 104288 states and 120867 transitions.
[2018-10-23 17:24:39,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:24:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 104288 states and 120867 transitions.
[2018-10-23 17:24:39,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1830
[2018-10-23 17:24:39,756 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:24:39,757 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:24:39,757 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:24:39,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:24:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash 1549679001, now seen corresponding path program 1 times
[2018-10-23 17:24:39,758 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:24:39,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:24:39,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:39,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:24:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:24:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:24:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked.
[2018-10-23 17:24:41,750 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:24:41,750 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-23 17:24:41,751 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:24:41,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:24:41,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:24:41,752 INFO L87 Difference]: Start difference. First operand 104288 states and 120867 transitions. Second operand 4 states.
[2018-10-23 17:24:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:24:58,008 INFO L93 Difference]: Finished difference Result 376805 states and 434530 transitions.
[2018-10-23 17:24:58,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:24:58,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1829
[2018-10-23 17:24:58,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:24:58,298 INFO L225 Difference]: With dead ends: 376805
[2018-10-23 17:24:58,298 INFO L226 Difference]: Without dead ends: 272519
[2018-10-23 17:24:58,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:24:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272519 states.
[2018-10-23 17:25:00,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272519 to 272482.
[2018-10-23 17:25:00,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272482 states.
[2018-10-23 17:25:00,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272482 states to 272482 states and 301309 transitions.
[2018-10-23 17:25:00,996 INFO L78 Accepts]: Start accepts. Automaton has 272482 states and 301309 transitions. Word has length 1829
[2018-10-23 17:25:00,997 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:25:00,997 INFO L481 AbstractCegarLoop]: Abstraction has 272482 states and 301309 transitions.
[2018-10-23 17:25:00,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:25:00,997 INFO L276 IsEmpty]: Start isEmpty. Operand 272482 states and 301309 transitions.
[2018-10-23 17:25:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1903
[2018-10-23 17:25:01,132 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:25:01,134 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:25:01,134 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:25:01,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:25:01,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1686425579, now seen corresponding path program 1 times
[2018-10-23 17:25:01,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:25:01,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:25:01,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:01,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:25:01,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:01,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:25:04,281 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2018-10-23 17:25:04,281 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:25:04,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-23 17:25:04,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-23 17:25:04,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-23 17:25:04,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:25:04,283 INFO L87 Difference]: Start difference. First operand 272482 states and 301309 transitions. Second operand 3 states.
[2018-10-23 17:25:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:25:15,797 INFO L93 Difference]: Finished difference Result 726751 states and 802345 transitions.
[2018-10-23 17:25:15,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-10-23 17:25:15,798 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1902
[2018-10-23 17:25:15,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:25:16,319 INFO L225 Difference]: With dead ends: 726751
[2018-10-23 17:25:16,320 INFO L226 Difference]: Without dead ends: 442342
[2018-10-23 17:25:16,491 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-23 17:25:16,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442342 states.
[2018-10-23 17:25:27,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442342 to 425349.
[2018-10-23 17:25:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425349 states.
[2018-10-23 17:25:27,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425349 states to 425349 states and 456223 transitions.
[2018-10-23 17:25:27,854 INFO L78 Accepts]: Start accepts. Automaton has 425349 states and 456223 transitions. Word has length 1902
[2018-10-23 17:25:27,854 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:25:27,854 INFO L481 AbstractCegarLoop]: Abstraction has 425349 states and 456223 transitions.
[2018-10-23 17:25:27,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-23 17:25:27,854 INFO L276 IsEmpty]: Start isEmpty. Operand 425349 states and 456223 transitions.
[2018-10-23 17:25:29,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1984
[2018-10-23 17:25:29,333 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:25:29,334 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:25:29,335 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:25:29,335 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:25:29,335 INFO L82 PathProgramCache]: Analyzing trace with hash 1876427374, now seen corresponding path program 1 times
[2018-10-23 17:25:29,335 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:25:29,336 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:25:29,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:29,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:25:29,337 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-23 17:25:32,127 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 336 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked.
[2018-10-23 17:25:32,127 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:25:32,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 17:25:32,128 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:25:32,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:25:32,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:25:32,129 INFO L87 Difference]: Start difference. First operand 425349 states and 456223 transitions. Second operand 4 states.
[2018-10-23 17:25:47,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-23 17:25:47,734 INFO L93 Difference]: Finished difference Result 884729 states and 948503 transitions.
[2018-10-23 17:25:47,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-10-23 17:25:47,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1983
[2018-10-23 17:25:47,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-23 17:25:48,282 INFO L225 Difference]: With dead ends: 884729
[2018-10-23 17:25:48,282 INFO L226 Difference]: Without dead ends: 455971
[2018-10-23 17:25:48,452 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:25:48,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455971 states.
[2018-10-23 17:25:54,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455971 to 449126.
[2018-10-23 17:25:54,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 449126 states.
[2018-10-23 17:25:54,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 449126 states to 449126 states and 480196 transitions.
[2018-10-23 17:25:54,542 INFO L78 Accepts]: Start accepts. Automaton has 449126 states and 480196 transitions. Word has length 1983
[2018-10-23 17:25:54,542 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-10-23 17:25:54,542 INFO L481 AbstractCegarLoop]: Abstraction has 449126 states and 480196 transitions.
[2018-10-23 17:25:54,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-23 17:25:54,542 INFO L276 IsEmpty]: Start isEmpty. Operand 449126 states and 480196 transitions.
[2018-10-23 17:25:54,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2072
[2018-10-23 17:25:54,750 INFO L367 BasicCegarLoop]: Found error trace
[2018-10-23 17:25:54,751 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-23 17:25:54,751 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-23 17:25:54,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier
[2018-10-23 17:25:54,752 INFO L82 PathProgramCache]: Analyzing trace with hash -489560459, now seen corresponding path program 1 times
[2018-10-23 17:25:54,752 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-23 17:25:54,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-23 17:25:54,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:54,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-23 17:25:54,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-23 17:25:54,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
Received shutdown request...
[2018-10-23 17:26:03,256 INFO L134 CoverageAnalysis]: Checked inductivity of 947 backedges. 661 proven. 0 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked.
[2018-10-23 17:26:03,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-23 17:26:03,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-10-23 17:26:03,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-23 17:26:03,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-23 17:26:03,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-23 17:26:03,258 INFO L87 Difference]: Start difference. First operand 449126 states and 480196 transitions. Second operand 4 states.
[2018-10-23 17:26:03,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2018-10-23 17:26:03,259 WARN L550 AbstractCegarLoop]: Verification canceled
[2018-10-23 17:26:03,266 WARN L205 ceAbstractionStarter]: Timeout
[2018-10-23 17:26:03,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:26:03 BoogieIcfgContainer
[2018-10-23 17:26:03,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-23 17:26:03,267 INFO L168 Benchmark]: Toolchain (without parser) took 229639.92 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 4.3 GB in the end (delta: -2.9 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,268 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3705.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,270 INFO L168 Benchmark]: Boogie Procedure Inliner took 833.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,273 INFO L168 Benchmark]: Boogie Preprocessor took 367.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,274 INFO L168 Benchmark]: RCFGBuilder took 15561.08 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 274.2 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -323.5 MB). Peak memory consumption was 916.8 MB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,275 INFO L168 Benchmark]: TraceAbstraction took 209167.12 ms. Allocated memory was 2.6 GB in the beginning and 5.8 GB in the end (delta: 3.2 GB). Free memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB.
[2018-10-23 17:26:03,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 3705.51 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 380.5 MB). Peak memory consumption was 380.5 MB. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 833.54 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 835.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 114.1 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 367.43 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 15561.08 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 274.2 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -323.5 MB). Peak memory consumption was 916.8 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 209167.12 ms. Allocated memory was 2.6 GB in the beginning and 5.8 GB in the end (delta: 3.2 GB). Free memory was 2.5 GB in the beginning and 4.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.3 GB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 10970]: Timeout (TraceAbstraction)
Unable to prove that call of __VERIFIER_error() unreachable (line 10970). Cancelled while BasicCegarLoop was constructing difference of abstraction (449126states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa).
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 2186 locations, 1 error locations. TIMEOUT Result, 209.0s OverallTime, 11 OverallIterations, 6 TraceHistogramMax, 150.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19241 SDtfs, 39339 SDslu, 3153 SDs, 0 SdLazy, 80629 SolverSat, 28700 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 112.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 16 SyntacticMatches, 7 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=449126occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 24.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 24277 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.8s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 19680 NumberOfCodeBlocks, 19680 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 19669 ConstructedInterpolants, 0 QuantifiedInterpolants, 44175946 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 2837/2837 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown