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/Problem04_label26_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 13:20:52,372 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 13:20:52,374 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 13:20:52,391 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 13:20:52,391 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 13:20:52,396 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 13:20:52,397 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 13:20:52,400 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 13:20:52,405 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 13:20:52,406 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 13:20:52,407 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 13:20:52,408 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 13:20:52,409 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 13:20:52,410 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 13:20:52,411 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 13:20:52,412 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 13:20:52,413 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 13:20:52,414 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 13:20:52,418 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 13:20:52,423 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 13:20:52,424 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 13:20:52,426 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 13:20:52,431 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 13:20:52,435 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 13:20:52,435 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 13:20:52,436 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 13:20:52,437 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 13:20:52,439 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 13:20:52,440 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 13:20:52,443 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 13:20:52,443 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 13:20:52,445 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 13:20:52,445 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 13:20:52,445 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 13:20:52,446 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 13:20:52,447 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 13:20:52,449 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 [2018-10-24 13:20:52,476 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 13:20:52,477 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 13:20:52,478 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 13:20:52,478 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 13:20:52,478 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 13:20:52,478 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 13:20:52,479 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 13:20:52,479 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 13:20:52,479 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 13:20:52,479 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 13:20:52,479 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 13:20:52,480 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 13:20:52,480 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 13:20:52,480 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 13:20:52,480 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 13:20:52,480 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 13:20:52,481 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 13:20:52,481 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 13:20:52,481 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 13:20:52,481 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 13:20:52,481 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 13:20:52,482 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 13:20:52,482 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 13:20:52,482 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 13:20:52,482 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 13:20:52,482 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 13:20:52,483 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 13:20:52,483 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 13:20:52,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 13:20:52,543 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 13:20:52,547 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 13:20:52,548 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 13:20:52,549 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 13:20:52,550 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label26_false-unreach-call.c [2018-10-24 13:20:52,609 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d42264aa/cf3caa92deba4afbaa381a3290cdedc8/FLAGda7b280ce [2018-10-24 13:20:53,474 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 13:20:53,475 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label26_false-unreach-call.c [2018-10-24 13:20:53,506 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d42264aa/cf3caa92deba4afbaa381a3290cdedc8/FLAGda7b280ce [2018-10-24 13:20:53,530 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8d42264aa/cf3caa92deba4afbaa381a3290cdedc8 [2018-10-24 13:20:53,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 13:20:53,545 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 13:20:53,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 13:20:53,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 13:20:53,551 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 13:20:53,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:20:53" (1/1) ... [2018-10-24 13:20:53,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14b692d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:53, skipping insertion in model container [2018-10-24 13:20:53,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:20:53" (1/1) ... [2018-10-24 13:20:53,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 13:20:53,737 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 13:20:55,046 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:20:55,051 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 13:20:55,722 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 13:20:55,759 INFO L193 MainTranslator]: Completed translation [2018-10-24 13:20:55,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55 WrapperNode [2018-10-24 13:20:55,760 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 13:20:55,761 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 13:20:55,761 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 13:20:55,761 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 13:20:55,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:55,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 13:20:56,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 13:20:56,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 13:20:56,289 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 13:20:56,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,323 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (1/1) ... [2018-10-24 13:20:56,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 13:20:56,532 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 13:20:56,532 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 13:20:56,532 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 13:20:56,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (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 [2018-10-24 13:20:56,607 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 13:20:56,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 13:20:56,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 13:21:05,264 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 13:21:05,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:21:05 BoogieIcfgContainer [2018-10-24 13:21:05,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 13:21:05,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 13:21:05,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 13:21:05,270 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 13:21:05,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:20:53" (1/3) ... [2018-10-24 13:21:05,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcdbe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:21:05, skipping insertion in model container [2018-10-24 13:21:05,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:20:55" (2/3) ... [2018-10-24 13:21:05,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcdbe92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:21:05, skipping insertion in model container [2018-10-24 13:21:05,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:21:05" (3/3) ... [2018-10-24 13:21:05,274 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem04_label26_false-unreach-call.c [2018-10-24 13:21:05,284 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 13:21:05,295 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 13:21:05,313 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 13:21:05,358 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 13:21:05,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 13:21:05,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 13:21:05,359 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 13:21:05,359 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 13:21:05,359 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 13:21:05,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 13:21:05,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 13:21:05,360 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 13:21:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 886 states. [2018-10-24 13:21:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 770 [2018-10-24 13:21:05,456 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:05,458 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] [2018-10-24 13:21:05,461 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:05,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:05,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1774962861, now seen corresponding path program 1 times [2018-10-24 13:21:05,470 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:05,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:05,521 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:05,521 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:05,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:05,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:06,819 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-10-24 13:21:07,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:21:07,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:07,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:21:07,633 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:21:07,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:21:07,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:21:07,648 INFO L87 Difference]: Start difference. First operand 886 states. Second operand 4 states. [2018-10-24 13:21:20,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:20,422 INFO L93 Difference]: Finished difference Result 3414 states and 6666 transitions. [2018-10-24 13:21:20,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:21:20,427 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 769 [2018-10-24 13:21:20,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:20,475 INFO L225 Difference]: With dead ends: 3414 [2018-10-24 13:21:20,476 INFO L226 Difference]: Without dead ends: 2521 [2018-10-24 13:21:20,486 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 [2018-10-24 13:21:20,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2521 states. [2018-10-24 13:21:20,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2521 to 2521. [2018-10-24 13:21:20,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2521 states. [2018-10-24 13:21:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2521 states to 2521 states and 4209 transitions. [2018-10-24 13:21:20,648 INFO L78 Accepts]: Start accepts. Automaton has 2521 states and 4209 transitions. Word has length 769 [2018-10-24 13:21:20,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:20,652 INFO L481 AbstractCegarLoop]: Abstraction has 2521 states and 4209 transitions. [2018-10-24 13:21:20,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:21:20,652 INFO L276 IsEmpty]: Start isEmpty. Operand 2521 states and 4209 transitions. [2018-10-24 13:21:20,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 775 [2018-10-24 13:21:20,724 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:20,725 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 13:21:20,726 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:20,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:20,726 INFO L82 PathProgramCache]: Analyzing trace with hash -874341709, now seen corresponding path program 1 times [2018-10-24 13:21:20,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:20,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:20,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:20,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:20,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:20,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:21:21,544 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:21,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:21:21,552 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:21:21,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:21:21,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:21:21,553 INFO L87 Difference]: Start difference. First operand 2521 states and 4209 transitions. Second operand 3 states. [2018-10-24 13:21:28,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:28,287 INFO L93 Difference]: Finished difference Result 7497 states and 12562 transitions. [2018-10-24 13:21:28,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:21:28,288 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 774 [2018-10-24 13:21:28,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:28,315 INFO L225 Difference]: With dead ends: 7497 [2018-10-24 13:21:28,315 INFO L226 Difference]: Without dead ends: 4978 [2018-10-24 13:21:28,321 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 [2018-10-24 13:21:28,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4978 states. [2018-10-24 13:21:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4978 to 4978. [2018-10-24 13:21:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4978 states. [2018-10-24 13:21:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4978 states to 4978 states and 7530 transitions. [2018-10-24 13:21:28,423 INFO L78 Accepts]: Start accepts. Automaton has 4978 states and 7530 transitions. Word has length 774 [2018-10-24 13:21:28,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:28,423 INFO L481 AbstractCegarLoop]: Abstraction has 4978 states and 7530 transitions. [2018-10-24 13:21:28,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:21:28,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4978 states and 7530 transitions. [2018-10-24 13:21:28,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2018-10-24 13:21:28,438 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:28,439 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:21:28,439 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:28,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1106736488, now seen corresponding path program 1 times [2018-10-24 13:21:28,440 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:28,440 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:28,441 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:28,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:28,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:28,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:28,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 13:21:28,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:28,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:21:29,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:21:29,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:21:29,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:21:29,001 INFO L87 Difference]: Start difference. First operand 4978 states and 7530 transitions. Second operand 4 states. [2018-10-24 13:21:37,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:37,778 INFO L93 Difference]: Finished difference Result 19782 states and 29992 transitions. [2018-10-24 13:21:37,778 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:21:37,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 776 [2018-10-24 13:21:37,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:37,834 INFO L225 Difference]: With dead ends: 19782 [2018-10-24 13:21:37,835 INFO L226 Difference]: Without dead ends: 14806 [2018-10-24 13:21:37,843 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:21:37,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14806 states. [2018-10-24 13:21:38,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14806 to 14806. [2018-10-24 13:21:38,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14806 states. [2018-10-24 13:21:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14806 states to 14806 states and 20136 transitions. [2018-10-24 13:21:38,116 INFO L78 Accepts]: Start accepts. Automaton has 14806 states and 20136 transitions. Word has length 776 [2018-10-24 13:21:38,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:38,116 INFO L481 AbstractCegarLoop]: Abstraction has 14806 states and 20136 transitions. [2018-10-24 13:21:38,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:21:38,117 INFO L276 IsEmpty]: Start isEmpty. Operand 14806 states and 20136 transitions. [2018-10-24 13:21:38,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 815 [2018-10-24 13:21:38,153 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:38,154 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2018-10-24 13:21:38,154 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:38,154 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:38,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1833822751, now seen corresponding path program 1 times [2018-10-24 13:21:38,157 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:38,157 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:38,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:38,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:38,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 13:21:38,588 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:21:38,588 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:21:38,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:21:38,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:21:38,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:21:38,590 INFO L87 Difference]: Start difference. First operand 14806 states and 20136 transitions. Second operand 3 states. [2018-10-24 13:21:43,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:43,622 INFO L93 Difference]: Finished difference Result 36981 states and 51214 transitions. [2018-10-24 13:21:43,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:21:43,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 814 [2018-10-24 13:21:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:43,681 INFO L225 Difference]: With dead ends: 36981 [2018-10-24 13:21:43,682 INFO L226 Difference]: Without dead ends: 22177 [2018-10-24 13:21:43,698 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 [2018-10-24 13:21:43,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22177 states. [2018-10-24 13:21:44,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22177 to 22177. [2018-10-24 13:21:44,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22177 states. [2018-10-24 13:21:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22177 states to 22177 states and 29979 transitions. [2018-10-24 13:21:44,059 INFO L78 Accepts]: Start accepts. Automaton has 22177 states and 29979 transitions. Word has length 814 [2018-10-24 13:21:44,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:21:44,059 INFO L481 AbstractCegarLoop]: Abstraction has 22177 states and 29979 transitions. [2018-10-24 13:21:44,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:21:44,060 INFO L276 IsEmpty]: Start isEmpty. Operand 22177 states and 29979 transitions. [2018-10-24 13:21:44,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 822 [2018-10-24 13:21:44,109 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:21:44,110 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 13:21:44,110 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:21:44,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:21:44,111 INFO L82 PathProgramCache]: Analyzing trace with hash -1041139318, now seen corresponding path program 1 times [2018-10-24 13:21:44,111 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:21:44,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:21:44,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:44,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:44,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:21:44,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 62 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-10-24 13:21:44,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:21:44,781 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:21:44,793 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:21:45,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:21:45,103 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:21:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-10-24 13:21:45,742 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:21:45,742 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-10-24 13:21:45,744 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 13:21:45,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 13:21:45,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 13:21:45,744 INFO L87 Difference]: Start difference. First operand 22177 states and 29979 transitions. Second operand 5 states. [2018-10-24 13:21:58,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:21:58,649 INFO L93 Difference]: Finished difference Result 126252 states and 171289 transitions. [2018-10-24 13:21:58,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 13:21:58,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 821 [2018-10-24 13:21:58,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:21:58,823 INFO L225 Difference]: With dead ends: 126252 [2018-10-24 13:21:58,823 INFO L226 Difference]: Without dead ends: 104077 [2018-10-24 13:21:58,862 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 820 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 13:21:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104077 states. [2018-10-24 13:21:59,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104077 to 103258. [2018-10-24 13:21:59,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103258 states. [2018-10-24 13:22:00,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103258 states to 103258 states and 122055 transitions. [2018-10-24 13:22:00,100 INFO L78 Accepts]: Start accepts. Automaton has 103258 states and 122055 transitions. Word has length 821 [2018-10-24 13:22:00,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:00,101 INFO L481 AbstractCegarLoop]: Abstraction has 103258 states and 122055 transitions. [2018-10-24 13:22:00,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 13:22:00,101 INFO L276 IsEmpty]: Start isEmpty. Operand 103258 states and 122055 transitions. [2018-10-24 13:22:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 975 [2018-10-24 13:22:00,224 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:00,225 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 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] [2018-10-24 13:22:00,225 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:00,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:00,226 INFO L82 PathProgramCache]: Analyzing trace with hash -23582222, now seen corresponding path program 1 times [2018-10-24 13:22:00,226 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:00,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:00,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:00,227 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:00,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 401 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2018-10-24 13:22:01,353 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:01,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:22:01,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:22:01,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:22:01,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:22:01,355 INFO L87 Difference]: Start difference. First operand 103258 states and 122055 transitions. Second operand 3 states. [2018-10-24 13:22:06,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:06,483 INFO L93 Difference]: Finished difference Result 213885 states and 253595 transitions. [2018-10-24 13:22:06,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:22:06,484 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 974 [2018-10-24 13:22:06,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:06,656 INFO L225 Difference]: With dead ends: 213885 [2018-10-24 13:22:06,656 INFO L226 Difference]: Without dead ends: 111448 [2018-10-24 13:22:06,745 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:22:06,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111448 states. [2018-10-24 13:22:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111448 to 111448. [2018-10-24 13:22:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111448 states. [2018-10-24 13:22:07,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111448 states to 111448 states and 128137 transitions. [2018-10-24 13:22:07,928 INFO L78 Accepts]: Start accepts. Automaton has 111448 states and 128137 transitions. Word has length 974 [2018-10-24 13:22:07,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:07,928 INFO L481 AbstractCegarLoop]: Abstraction has 111448 states and 128137 transitions. [2018-10-24 13:22:07,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:22:07,929 INFO L276 IsEmpty]: Start isEmpty. Operand 111448 states and 128137 transitions. [2018-10-24 13:22:08,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2018-10-24 13:22:08,026 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:08,027 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 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, 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] [2018-10-24 13:22:08,028 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:08,028 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:08,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1664861185, now seen corresponding path program 1 times [2018-10-24 13:22:08,029 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:08,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:08,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:08,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:08,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:08,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:09,625 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2018-10-24 13:22:09,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:09,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:22:09,629 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:22:09,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:22:09,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:22:09,630 INFO L87 Difference]: Start difference. First operand 111448 states and 128137 transitions. Second operand 4 states. [2018-10-24 13:22:16,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:16,333 INFO L93 Difference]: Finished difference Result 222075 states and 255441 transitions. [2018-10-24 13:22:16,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:22:16,341 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 983 [2018-10-24 13:22:16,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:16,450 INFO L225 Difference]: With dead ends: 222075 [2018-10-24 13:22:16,451 INFO L226 Difference]: Without dead ends: 95038 [2018-10-24 13:22:16,548 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 [2018-10-24 13:22:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95038 states. [2018-10-24 13:22:17,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95038 to 94219. [2018-10-24 13:22:17,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94219 states. [2018-10-24 13:22:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94219 states to 94219 states and 97475 transitions. [2018-10-24 13:22:18,022 INFO L78 Accepts]: Start accepts. Automaton has 94219 states and 97475 transitions. Word has length 983 [2018-10-24 13:22:18,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:18,023 INFO L481 AbstractCegarLoop]: Abstraction has 94219 states and 97475 transitions. [2018-10-24 13:22:18,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:22:18,023 INFO L276 IsEmpty]: Start isEmpty. Operand 94219 states and 97475 transitions. [2018-10-24 13:22:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1294 [2018-10-24 13:22:18,091 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:18,092 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:22:18,092 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:18,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:18,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1994865870, now seen corresponding path program 1 times [2018-10-24 13:22:18,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:18,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:18,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:18,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:18,095 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:19,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1017 backedges. 518 proven. 0 refuted. 0 times theorem prover too weak. 499 trivial. 0 not checked. [2018-10-24 13:22:19,953 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:19,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 13:22:19,955 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:22:19,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:22:19,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:22:19,955 INFO L87 Difference]: Start difference. First operand 94219 states and 97475 transitions. Second operand 3 states. [2018-10-24 13:22:23,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:23,301 INFO L93 Difference]: Finished difference Result 203997 states and 210960 transitions. [2018-10-24 13:22:23,301 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:22:23,301 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1293 [2018-10-24 13:22:23,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:23,409 INFO L225 Difference]: With dead ends: 203997 [2018-10-24 13:22:23,409 INFO L226 Difference]: Without dead ends: 110599 [2018-10-24 13:22:23,460 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 [2018-10-24 13:22:23,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110599 states. [2018-10-24 13:22:24,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110599 to 110599. [2018-10-24 13:22:24,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110599 states. [2018-10-24 13:22:24,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110599 states to 110599 states and 114117 transitions. [2018-10-24 13:22:24,470 INFO L78 Accepts]: Start accepts. Automaton has 110599 states and 114117 transitions. Word has length 1293 [2018-10-24 13:22:24,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:24,471 INFO L481 AbstractCegarLoop]: Abstraction has 110599 states and 114117 transitions. [2018-10-24 13:22:24,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:22:24,471 INFO L276 IsEmpty]: Start isEmpty. Operand 110599 states and 114117 transitions. [2018-10-24 13:22:24,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1343 [2018-10-24 13:22:24,522 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:24,523 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:22:24,523 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:24,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:24,524 INFO L82 PathProgramCache]: Analyzing trace with hash 392914930, now seen corresponding path program 1 times [2018-10-24 13:22:24,524 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:24,524 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:24,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:24,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:24,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1438 backedges. 1106 proven. 0 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2018-10-24 13:22:27,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:22:27,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 13:22:27,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 13:22:27,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 13:22:27,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 13:22:27,024 INFO L87 Difference]: Start difference. First operand 110599 states and 114117 transitions. Second operand 4 states. [2018-10-24 13:22:30,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:30,736 INFO L93 Difference]: Finished difference Result 221196 states and 228239 transitions. [2018-10-24 13:22:30,736 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:22:30,736 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1342 [2018-10-24 13:22:30,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:30,864 INFO L225 Difference]: With dead ends: 221196 [2018-10-24 13:22:30,865 INFO L226 Difference]: Without dead ends: 111418 [2018-10-24 13:22:30,926 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 [2018-10-24 13:22:30,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111418 states. [2018-10-24 13:22:31,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111418 to 111418. [2018-10-24 13:22:31,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111418 states. [2018-10-24 13:22:31,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111418 states to 111418 states and 114383 transitions. [2018-10-24 13:22:31,866 INFO L78 Accepts]: Start accepts. Automaton has 111418 states and 114383 transitions. Word has length 1342 [2018-10-24 13:22:31,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:22:31,867 INFO L481 AbstractCegarLoop]: Abstraction has 111418 states and 114383 transitions. [2018-10-24 13:22:31,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 13:22:31,867 INFO L276 IsEmpty]: Start isEmpty. Operand 111418 states and 114383 transitions. [2018-10-24 13:22:31,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1359 [2018-10-24 13:22:31,916 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:22:31,917 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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] [2018-10-24 13:22:31,917 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:22:31,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:22:31,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1491737745, now seen corresponding path program 1 times [2018-10-24 13:22:31,918 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:22:31,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:22:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:31,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:31,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:22:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:33,492 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 13:22:33,741 WARN L179 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 13:22:34,408 WARN L179 SmtUtils]: Spent 588.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2018-10-24 13:22:37,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 764 proven. 114 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2018-10-24 13:22:37,260 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:22:37,260 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:22:37,268 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:22:37,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:22:37,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:22:39,002 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 865 proven. 0 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2018-10-24 13:22:39,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:22:39,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-24 13:22:39,048 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-24 13:22:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-24 13:22:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-10-24 13:22:39,052 INFO L87 Difference]: Start difference. First operand 111418 states and 114383 transitions. Second operand 9 states. [2018-10-24 13:22:57,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:22:57,359 INFO L93 Difference]: Finished difference Result 240674 states and 247152 transitions. [2018-10-24 13:22:57,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-24 13:22:57,361 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1358 [2018-10-24 13:22:57,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:22:57,828 INFO L225 Difference]: With dead ends: 240674 [2018-10-24 13:22:57,829 INFO L226 Difference]: Without dead ends: 127980 [2018-10-24 13:22:57,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1393 GetRequests, 1370 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=130, Invalid=376, Unknown=0, NotChecked=0, Total=506 [2018-10-24 13:22:58,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127980 states. [2018-10-24 13:22:59,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127980 to 108953. [2018-10-24 13:22:59,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108953 states. [2018-10-24 13:23:00,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108953 states to 108953 states and 111118 transitions. [2018-10-24 13:23:00,108 INFO L78 Accepts]: Start accepts. Automaton has 108953 states and 111118 transitions. Word has length 1358 [2018-10-24 13:23:00,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:00,111 INFO L481 AbstractCegarLoop]: Abstraction has 108953 states and 111118 transitions. [2018-10-24 13:23:00,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-24 13:23:00,111 INFO L276 IsEmpty]: Start isEmpty. Operand 108953 states and 111118 transitions. [2018-10-24 13:23:00,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1708 [2018-10-24 13:23:00,275 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:00,276 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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, 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, 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, 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, 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] [2018-10-24 13:23:00,276 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:00,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:00,277 INFO L82 PathProgramCache]: Analyzing trace with hash 1589967883, now seen corresponding path program 1 times [2018-10-24 13:23:00,277 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:00,278 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:00,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:00,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:00,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:02,112 WARN L179 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 13:23:02,374 WARN L179 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2018-10-24 13:23:07,472 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 1288 proven. 567 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2018-10-24 13:23:07,472 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:23:07,473 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:23:07,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:07,981 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:23:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 1930 backedges. 936 proven. 0 refuted. 0 times theorem prover too weak. 994 trivial. 0 not checked. [2018-10-24 13:23:10,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:23:10,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2018-10-24 13:23:10,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 13:23:10,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 13:23:10,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-10-24 13:23:10,100 INFO L87 Difference]: Start difference. First operand 108953 states and 111118 transitions. Second operand 10 states. [2018-10-24 13:23:26,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:23:26,081 INFO L93 Difference]: Finished difference Result 233201 states and 237925 transitions. [2018-10-24 13:23:26,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 13:23:26,082 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1707 [2018-10-24 13:23:26,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:23:26,271 INFO L225 Difference]: With dead ends: 233201 [2018-10-24 13:23:26,271 INFO L226 Difference]: Without dead ends: 125069 [2018-10-24 13:23:26,357 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1736 GetRequests, 1716 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=104, Invalid=316, Unknown=0, NotChecked=0, Total=420 [2018-10-24 13:23:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125069 states. [2018-10-24 13:23:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125069 to 107310. [2018-10-24 13:23:28,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107310 states. [2018-10-24 13:23:28,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107310 states to 107310 states and 108627 transitions. [2018-10-24 13:23:28,246 INFO L78 Accepts]: Start accepts. Automaton has 107310 states and 108627 transitions. Word has length 1707 [2018-10-24 13:23:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:28,247 INFO L481 AbstractCegarLoop]: Abstraction has 107310 states and 108627 transitions. [2018-10-24 13:23:28,247 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-24 13:23:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 107310 states and 108627 transitions. [2018-10-24 13:23:28,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3144 [2018-10-24 13:23:28,380 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:28,381 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 13:23:28,382 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:28,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:28,383 INFO L82 PathProgramCache]: Analyzing trace with hash 729363411, now seen corresponding path program 1 times [2018-10-24 13:23:28,383 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:28,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:28,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:28,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:28,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:28,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:30,334 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-24 13:23:36,716 INFO L134 CoverageAnalysis]: Checked inductivity of 10022 backedges. 4000 proven. 263 refuted. 0 times theorem prover too weak. 5759 trivial. 0 not checked. [2018-10-24 13:23:36,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:23:36,717 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:23:36,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:23:37,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:23:41,969 INFO L134 CoverageAnalysis]: Checked inductivity of 10022 backedges. 6413 proven. 0 refuted. 0 times theorem prover too weak. 3609 trivial. 0 not checked. [2018-10-24 13:23:41,993 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:23:41,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 13:23:41,996 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 13:23:41,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 13:23:41,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-24 13:23:41,997 INFO L87 Difference]: Start difference. First operand 107310 states and 108627 transitions. Second operand 8 states. [2018-10-24 13:23:57,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:23:57,830 INFO L93 Difference]: Finished difference Result 213988 states and 216618 transitions. [2018-10-24 13:23:57,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-24 13:23:57,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 3143 [2018-10-24 13:23:57,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:23:57,972 INFO L225 Difference]: With dead ends: 213988 [2018-10-24 13:23:57,972 INFO L226 Difference]: Without dead ends: 107499 [2018-10-24 13:23:58,032 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3164 GetRequests, 3150 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-24 13:23:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107499 states. [2018-10-24 13:23:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107499 to 106491. [2018-10-24 13:23:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106491 states. [2018-10-24 13:23:59,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106491 states to 106491 states and 107547 transitions. [2018-10-24 13:23:59,042 INFO L78 Accepts]: Start accepts. Automaton has 106491 states and 107547 transitions. Word has length 3143 [2018-10-24 13:23:59,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:23:59,043 INFO L481 AbstractCegarLoop]: Abstraction has 106491 states and 107547 transitions. [2018-10-24 13:23:59,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 13:23:59,043 INFO L276 IsEmpty]: Start isEmpty. Operand 106491 states and 107547 transitions. [2018-10-24 13:23:59,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3418 [2018-10-24 13:23:59,171 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:23:59,173 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 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] [2018-10-24 13:23:59,173 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:23:59,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:23:59,175 INFO L82 PathProgramCache]: Analyzing trace with hash -295571007, now seen corresponding path program 1 times [2018-10-24 13:23:59,175 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:23:59,175 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:23:59,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:59,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:23:59,178 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:23:59,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:24:05,980 INFO L134 CoverageAnalysis]: Checked inductivity of 12287 backedges. 3717 proven. 0 refuted. 0 times theorem prover too weak. 8570 trivial. 0 not checked. [2018-10-24 13:24:05,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 13:24:05,981 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 13:24:05,983 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 13:24:05,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 13:24:05,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:24:05,984 INFO L87 Difference]: Start difference. First operand 106491 states and 107547 transitions. Second operand 3 states. [2018-10-24 13:24:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 13:24:09,500 INFO L93 Difference]: Finished difference Result 212980 states and 215091 transitions. [2018-10-24 13:24:09,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 13:24:09,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3417 [2018-10-24 13:24:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 13:24:09,639 INFO L225 Difference]: With dead ends: 212980 [2018-10-24 13:24:09,639 INFO L226 Difference]: Without dead ends: 107310 [2018-10-24 13:24:09,685 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 13:24:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107310 states. [2018-10-24 13:24:10,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107310 to 107310. [2018-10-24 13:24:10,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107310 states. [2018-10-24 13:24:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107310 states to 107310 states and 108261 transitions. [2018-10-24 13:24:10,533 INFO L78 Accepts]: Start accepts. Automaton has 107310 states and 108261 transitions. Word has length 3417 [2018-10-24 13:24:10,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 13:24:10,534 INFO L481 AbstractCegarLoop]: Abstraction has 107310 states and 108261 transitions. [2018-10-24 13:24:10,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 13:24:10,534 INFO L276 IsEmpty]: Start isEmpty. Operand 107310 states and 108261 transitions. [2018-10-24 13:24:10,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3653 [2018-10-24 13:24:10,677 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 13:24:10,679 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 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, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 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] [2018-10-24 13:24:10,679 INFO L424 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 13:24:10,680 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 13:24:10,680 INFO L82 PathProgramCache]: Analyzing trace with hash -630415757, now seen corresponding path program 1 times [2018-10-24 13:24:10,681 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 13:24:10,681 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 13:24:10,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:24:10,682 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:24:10,682 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 13:24:10,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:24:12,650 WARN L179 SmtUtils]: Spent 369.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-10-24 13:24:13,048 WARN L179 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 13:24:25,955 INFO L134 CoverageAnalysis]: Checked inductivity of 14485 backedges. 7382 proven. 528 refuted. 0 times theorem prover too weak. 6575 trivial. 0 not checked. [2018-10-24 13:24:25,956 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 13:24:25,956 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 13:24:25,965 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 13:24:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 13:24:26,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 13:24:32,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14485 backedges. 8699 proven. 0 refuted. 0 times theorem prover too weak. 5786 trivial. 0 not checked. [2018-10-24 13:24:32,143 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 13:24:32,144 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 11 [2018-10-24 13:24:32,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 13:24:32,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 13:24:32,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-24 13:24:32,150 INFO L87 Difference]: Start difference. First operand 107310 states and 108261 transitions. Second operand 11 states. Received shutdown request... [2018-10-24 13:24:33,128 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 13:24:33,129 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 13:24:33,135 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 13:24:33,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:24:33 BoogieIcfgContainer [2018-10-24 13:24:33,135 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 13:24:33,136 INFO L168 Benchmark]: Toolchain (without parser) took 219593.08 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,137 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. [2018-10-24 13:24:33,138 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2214.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,139 INFO L168 Benchmark]: Boogie Procedure Inliner took 528.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,139 INFO L168 Benchmark]: Boogie Preprocessor took 242.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,140 INFO L168 Benchmark]: RCFGBuilder took 8733.64 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 205.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -120.0 MB). Peak memory consumption was 653.5 MB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,142 INFO L168 Benchmark]: TraceAbstraction took 207868.97 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -771.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-10-24 13:24:33,148 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 2214.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 211.4 MB). Peak memory consumption was 211.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 528.06 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 242.23 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 35.6 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8733.64 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 205.5 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -120.0 MB). Peak memory consumption was 653.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207868.97 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: -771.7 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 4661]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 4661). Cancelled while BasicCegarLoop was constructing difference of abstraction (107310states) and FLOYD_HOARE automaton (currently 4 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (394 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 886 locations, 1 error locations. TIMEOUT Result, 207.7s OverallTime, 14 OverallIterations, 14 TraceHistogramMax, 122.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7613 SDtfs, 29711 SDslu, 1525 SDs, 0 SdLazy, 81518 SolverSat, 12534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10808 GetRequests, 10720 SyntacticMatches, 7 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 6.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=111448occurred in iteration=6, 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: 12.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 39432 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.4s SsaConstructionTime, 3.4s SatisfiabilityAnalysisTime, 27.4s InterpolantComputationTime, 32504 NumberOfCodeBlocks, 32504 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 32485 ConstructedInterpolants, 0 QuantifiedInterpolants, 183342195 SizeOfPredicates, 2 NumberOfNonLiveVariables, 12463 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 69418/70894 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown