./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/loop-invgen/nested6_true-unreach-call_true-termination.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/loop-invgen/nested6_true-unreach-call_true-termination.i -s /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 934ee9c856a834ce808d29dea79c6912619f897f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-10-27 06:11:51,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:11:51,916 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:11:51,925 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:11:51,926 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:11:51,926 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:11:51,927 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:11:51,929 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:11:51,931 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:11:51,931 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:11:51,932 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:11:51,932 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:11:51,933 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:11:51,934 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:11:51,935 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:11:51,935 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:11:51,936 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:11:51,938 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:11:51,939 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:11:51,940 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:11:51,941 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:11:51,942 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:11:51,944 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:11:51,944 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:11:51,945 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:11:51,945 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:11:51,946 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:11:51,947 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:11:51,947 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:11:51,948 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:11:51,949 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:11:51,949 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:11:51,950 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:11:51,950 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:11:51,950 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:11:51,951 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:11:51,951 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-10-27 06:11:51,963 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:11:51,964 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:11:51,965 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:11:51,965 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:11:51,965 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:11:51,965 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:11:51,965 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:11:51,965 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:11:51,966 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:11:51,966 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:11:51,967 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:11:51,968 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:11:51,968 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:11:51,968 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:11:51,968 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:11:51,971 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:11:51,971 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:11:51,971 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:11:51,972 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:11:51,972 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 934ee9c856a834ce808d29dea79c6912619f897f [2018-10-27 06:11:52,000 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:11:52,010 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:11:52,015 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:11:52,016 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:11:52,016 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:11:52,017 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/../../sv-benchmarks/c/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-27 06:11:52,057 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/data/f4c81568d/33077a73fc48435e982b071a01f65fe9/FLAG85f3e13a7 [2018-10-27 06:11:52,412 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:11:52,412 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/sv-benchmarks/c/loop-invgen/nested6_true-unreach-call_true-termination.i [2018-10-27 06:11:52,417 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/data/f4c81568d/33077a73fc48435e982b071a01f65fe9/FLAG85f3e13a7 [2018-10-27 06:11:52,429 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/data/f4c81568d/33077a73fc48435e982b071a01f65fe9 [2018-10-27 06:11:52,432 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:11:52,433 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:11:52,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:52,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:11:52,437 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:11:52,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@610ddef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52, skipping insertion in model container [2018-10-27 06:11:52,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:11:52,464 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:11:52,578 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:52,580 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:11:52,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:52,604 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:11:52,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52 WrapperNode [2018-10-27 06:11:52,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:52,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:52,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:11:52,605 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:11:52,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,632 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:52,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:11:52,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:11:52,632 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:11:52,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,641 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,641 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,642 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... [2018-10-27 06:11:52,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:11:52,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:11:52,649 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:11:52,649 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:11:52,650 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:52,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:11:52,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:11:53,155 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:11:53,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:53 BoogieIcfgContainer [2018-10-27 06:11:53,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:11:53,156 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:11:53,157 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:11:53,160 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:11:53,161 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:53,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:11:52" (1/3) ... [2018-10-27 06:11:53,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23fabf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:53, skipping insertion in model container [2018-10-27 06:11:53,162 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:53,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:52" (2/3) ... [2018-10-27 06:11:53,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@23fabf4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:53, skipping insertion in model container [2018-10-27 06:11:53,162 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:53,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:53" (3/3) ... [2018-10-27 06:11:53,164 INFO L375 chiAutomizerObserver]: Analyzing ICFG nested6_true-unreach-call_true-termination.i [2018-10-27 06:11:53,212 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:11:53,213 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:11:53,213 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:11:53,213 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:11:53,213 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:11:53,213 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:11:53,213 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:11:53,213 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:11:53,213 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:11:53,226 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states. [2018-10-27 06:11:53,245 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-10-27 06:11:53,245 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:53,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:53,251 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:53,251 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:53,251 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:11:53,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states. [2018-10-27 06:11:53,254 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 19 [2018-10-27 06:11:53,254 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:53,254 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:53,254 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:53,254 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:53,262 INFO L793 eck$LassoCheckResult]: Stem: 25#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 17#L14true assume !!(main_~n~0 < 1000000); 19#L15true assume main_~k~0 == main_~n~0; 29#L15-1true main_~i~0 := 0; 20#L19-4true [2018-10-27 06:11:53,262 INFO L795 eck$LassoCheckResult]: Loop: 20#L19-4true assume true; 22#L19-1true assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 4#L20-4true assume !true; 21#L19-3true main_#t~post3 := main_~i~0;main_~i~0 := main_#t~post3 + 1;havoc main_#t~post3; 20#L19-4true [2018-10-27 06:11:53,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:53,268 INFO L82 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 1 times [2018-10-27 06:11:53,270 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:53,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:53,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,311 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:53,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:53,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1484584, now seen corresponding path program 1 times [2018-10-27 06:11:53,350 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:53,350 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:53,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:53,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:53,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:53,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:53,376 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:11:53,380 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:11:53,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-27 06:11:53,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-27 06:11:53,395 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2018-10-27 06:11:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:53,402 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-10-27 06:11:53,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:11:53,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 33 transitions. [2018-10-27 06:11:53,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-10-27 06:11:53,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 21 states and 24 transitions. [2018-10-27 06:11:53,410 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 21 [2018-10-27 06:11:53,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 21 [2018-10-27 06:11:53,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 24 transitions. [2018-10-27 06:11:53,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:53,411 INFO L705 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-10-27 06:11:53,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 24 transitions. [2018-10-27 06:11:53,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-10-27 06:11:53,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-10-27 06:11:53,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-10-27 06:11:53,436 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-10-27 06:11:53,437 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-10-27 06:11:53,437 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:11:53,437 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2018-10-27 06:11:53,438 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 16 [2018-10-27 06:11:53,438 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:53,438 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:53,438 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:53,438 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:53,438 INFO L793 eck$LassoCheckResult]: Stem: 83#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 78#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 79#L14 assume !!(main_~n~0 < 1000000); 64#L15 assume main_~k~0 == main_~n~0; 65#L15-1 main_~i~0 := 0; 66#L19-4 [2018-10-27 06:11:53,439 INFO L795 eck$LassoCheckResult]: Loop: 66#L19-4 assume true; 67#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 68#L20-4 assume true; 69#L20-1 assume !(main_~j~0 < main_~n~0); 70#L19-3 main_#t~post3 := main_~i~0;main_~i~0 := main_#t~post3 + 1;havoc main_#t~post3; 66#L19-4 [2018-10-27 06:11:53,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:53,439 INFO L82 PathProgramCache]: Analyzing trace with hash 28695784, now seen corresponding path program 2 times [2018-10-27 06:11:53,439 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:53,439 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:53,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,440 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:53,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:53,447 INFO L82 PathProgramCache]: Analyzing trace with hash 45964686, now seen corresponding path program 1 times [2018-10-27 06:11:53,447 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:53,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,449 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:53,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:53,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:53,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1098876665, now seen corresponding path program 1 times [2018-10-27 06:11:53,463 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:53,463 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:53,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:53,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:53,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:53,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:53,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:53,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:11:53,651 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:53,652 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:53,652 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:53,652 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:53,652 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:53,652 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:53,652 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:53,653 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:53,653 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration2_Loop [2018-10-27 06:11:53,653 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:53,653 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:53,671 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:53,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:53,839 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:53,840 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:53,843 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:53,843 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:53,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:53,888 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:54,186 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:54,187 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:54,187 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:54,188 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:54,188 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:54,188 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:54,188 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:54,188 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:54,188 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:54,188 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration2_Loop [2018-10-27 06:11:54,188 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:54,189 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:54,190 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:54,321 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-27 06:11:54,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:54,473 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:54,476 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:54,477 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:54,478 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:54,479 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:54,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:54,479 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:54,479 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:54,481 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:54,481 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:54,489 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:54,503 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:54,503 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:54,505 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:54,505 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:54,506 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:54,506 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2018-10-27 06:11:54,507 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:54,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:54,550 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:54,557 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:54,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:54,568 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:54,569 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-10-27 06:11:54,662 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 37 states and 44 transitions. Complement of second has 6 states. [2018-10-27 06:11:54,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:54,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:54,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 24 transitions. [2018-10-27 06:11:54,667 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 5 letters. Loop has 5 letters. [2018-10-27 06:11:54,668 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:54,668 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 10 letters. Loop has 5 letters. [2018-10-27 06:11:54,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:54,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 24 transitions. Stem has 5 letters. Loop has 10 letters. [2018-10-27 06:11:54,671 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:54,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 44 transitions. [2018-10-27 06:11:54,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-10-27 06:11:54,675 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 36 states and 43 transitions. [2018-10-27 06:11:54,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-10-27 06:11:54,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-10-27 06:11:54,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 43 transitions. [2018-10-27 06:11:54,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:54,677 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-10-27 06:11:54,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 43 transitions. [2018-10-27 06:11:54,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-10-27 06:11:54,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-27 06:11:54,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-10-27 06:11:54,680 INFO L728 BuchiCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-10-27 06:11:54,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:11:54,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:11:54,684 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-10-27 06:11:54,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:54,736 INFO L93 Difference]: Finished difference Result 69 states and 81 transitions. [2018-10-27 06:11:54,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-27 06:11:54,737 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 69 states and 81 transitions. [2018-10-27 06:11:54,738 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 26 [2018-10-27 06:11:54,738 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 69 states to 69 states and 81 transitions. [2018-10-27 06:11:54,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2018-10-27 06:11:54,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2018-10-27 06:11:54,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 69 states and 81 transitions. [2018-10-27 06:11:54,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:54,739 INFO L705 BuchiCegarLoop]: Abstraction has 69 states and 81 transitions. [2018-10-27 06:11:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states and 81 transitions. [2018-10-27 06:11:54,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 39. [2018-10-27 06:11:54,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-27 06:11:54,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2018-10-27 06:11:54,742 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-10-27 06:11:54,742 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 46 transitions. [2018-10-27 06:11:54,742 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:11:54,742 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 46 transitions. [2018-10-27 06:11:54,743 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 13 [2018-10-27 06:11:54,743 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:54,743 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:54,743 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:54,743 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:11:54,744 INFO L793 eck$LassoCheckResult]: Stem: 319#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 313#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 314#L14 assume !!(main_~n~0 < 1000000); 284#L15 assume main_~k~0 == main_~n~0; 285#L15-1 main_~i~0 := 0; 286#L19-4 assume true; 288#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 291#L20-4 [2018-10-27 06:11:54,744 INFO L795 eck$LassoCheckResult]: Loop: 291#L20-4 assume true; 292#L20-1 assume !!(main_~j~0 < main_~n~0); 305#L21 assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 301#L22-4 assume true; 302#L22-1 assume !(main_~k~0 < main_~n~0); 296#L20-3 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 + 1;havoc main_#t~post4; 291#L20-4 [2018-10-27 06:11:54,744 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1806845229, now seen corresponding path program 1 times [2018-10-27 06:11:54,747 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:54,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:54,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:54,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,755 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1691124979, now seen corresponding path program 1 times [2018-10-27 06:11:54,755 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:54,755 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:54,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:54,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:54,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:11:54,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 06:11:54,779 INFO L810 eck$LassoCheckResult]: loop already infeasible [2018-10-27 06:11:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 06:11:54,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-27 06:11:54,779 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-10-27 06:11:54,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:54,854 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-10-27 06:11:54,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 06:11:54,855 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 50 transitions. [2018-10-27 06:11:54,856 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-10-27 06:11:54,856 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 50 transitions. [2018-10-27 06:11:54,856 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 22 [2018-10-27 06:11:54,857 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 22 [2018-10-27 06:11:54,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 50 transitions. [2018-10-27 06:11:54,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:54,857 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-10-27 06:11:54,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 50 transitions. [2018-10-27 06:11:54,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-10-27 06:11:54,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-10-27 06:11:54,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-10-27 06:11:54,861 INFO L728 BuchiCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-10-27 06:11:54,861 INFO L608 BuchiCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-10-27 06:11:54,861 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:11:54,861 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 50 transitions. [2018-10-27 06:11:54,862 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 15 [2018-10-27 06:11:54,862 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:54,862 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:54,864 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:54,864 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:54,865 INFO L793 eck$LassoCheckResult]: Stem: 414#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 402#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 403#L14 assume !!(main_~n~0 < 1000000); 375#L15 assume main_~k~0 == main_~n~0; 376#L15-1 main_~i~0 := 0; 377#L19-4 assume true; 378#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 382#L20-4 [2018-10-27 06:11:54,865 INFO L795 eck$LassoCheckResult]: Loop: 382#L20-4 assume true; 383#L20-1 assume !!(main_~j~0 < main_~n~0); 396#L21 assume !(main_#t~nondet5 != 0);havoc main_#t~nondet5;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 407#L4-3 assume !(__VERIFIER_assert_~cond == 0); 404#L4-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 400#L4-6 assume !(__VERIFIER_assert_~cond == 0); 390#L4-8 assume { :end_inline___VERIFIER_assert } true; 387#L20-3 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 + 1;havoc main_#t~post4; 382#L20-4 [2018-10-27 06:11:54,865 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,865 INFO L82 PathProgramCache]: Analyzing trace with hash 1806845229, now seen corresponding path program 2 times [2018-10-27 06:11:54,865 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:54,865 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:54,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:54,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1849498602, now seen corresponding path program 1 times [2018-10-27 06:11:54,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:54,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:54,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:54,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:54,889 INFO L82 PathProgramCache]: Analyzing trace with hash 421739842, now seen corresponding path program 1 times [2018-10-27 06:11:54,889 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:54,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:54,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:54,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:54,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:55,224 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 18 [2018-10-27 06:11:55,224 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:55,225 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:55,225 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:55,225 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:55,225 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:55,225 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:55,225 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:55,225 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:55,225 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration4_Loop [2018-10-27 06:11:55,225 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:55,225 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:55,226 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,238 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,288 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:55,288 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:55,291 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:55,291 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:55,298 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:55,298 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:55,315 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:55,315 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:55,338 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:55,338 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:55,678 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:55,680 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:55,680 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:55,680 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:55,680 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:55,680 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:55,680 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:55,680 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:55,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:55,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration4_Loop [2018-10-27 06:11:55,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:55,681 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:55,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,736 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:55,919 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:55,919 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:55,919 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:55,920 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:55,920 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:55,920 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:55,920 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:55,922 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:55,923 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:55,923 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:55,925 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:55,925 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:55,926 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:55,926 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:55,926 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:55,926 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:55,926 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:55,926 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:55,927 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:55,932 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:55,932 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:55,933 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:55,933 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:55,933 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:55,933 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:55,933 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:55,934 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:55,934 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:55,939 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:55,944 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:55,944 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:55,945 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:55,945 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:55,945 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:55,945 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~j~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~j~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-10-27 06:11:55,945 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:56,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:56,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:56,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:56,073 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:56,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:56,115 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:56,115 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 50 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-10-27 06:11:56,150 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 50 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 112 states and 131 transitions. Complement of second has 7 states. [2018-10-27 06:11:56,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:56,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:56,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-10-27 06:11:56,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 8 letters. [2018-10-27 06:11:56,158 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:56,158 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 15 letters. Loop has 8 letters. [2018-10-27 06:11:56,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:56,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 7 letters. Loop has 16 letters. [2018-10-27 06:11:56,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:56,159 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 112 states and 131 transitions. [2018-10-27 06:11:56,160 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-10-27 06:11:56,161 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 112 states to 89 states and 104 transitions. [2018-10-27 06:11:56,161 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-10-27 06:11:56,161 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-10-27 06:11:56,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 104 transitions. [2018-10-27 06:11:56,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:56,162 INFO L705 BuchiCegarLoop]: Abstraction has 89 states and 104 transitions. [2018-10-27 06:11:56,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 104 transitions. [2018-10-27 06:11:56,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 82. [2018-10-27 06:11:56,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2018-10-27 06:11:56,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 96 transitions. [2018-10-27 06:11:56,169 INFO L728 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2018-10-27 06:11:56,169 INFO L608 BuchiCegarLoop]: Abstraction has 82 states and 96 transitions. [2018-10-27 06:11:56,169 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-10-27 06:11:56,169 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 82 states and 96 transitions. [2018-10-27 06:11:56,171 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 20 [2018-10-27 06:11:56,171 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:56,171 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:56,172 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:56,172 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:56,172 INFO L793 eck$LassoCheckResult]: Stem: 641#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 634#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 635#L14 assume !!(main_~n~0 < 1000000); 605#L15 assume main_~k~0 == main_~n~0; 606#L15-1 main_~i~0 := 0; 599#L19-4 assume true; 600#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 607#L20-4 assume true; 609#L20-1 assume !!(main_~j~0 < main_~n~0); 638#L21 assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 618#L22-4 [2018-10-27 06:11:56,172 INFO L795 eck$LassoCheckResult]: Loop: 618#L22-4 assume true; 619#L22-1 assume !!(main_~k~0 < main_~n~0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 636#L4 assume !(__VERIFIER_assert_~cond == 0); 644#L4-2 assume { :end_inline___VERIFIER_assert } true; 622#L22-3 main_#t~post6 := main_~k~0;main_~k~0 := main_#t~post6 + 1;havoc main_#t~post6; 618#L22-4 [2018-10-27 06:11:56,172 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:56,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1098876655, now seen corresponding path program 1 times [2018-10-27 06:11:56,173 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:56,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:56,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:56,183 INFO L82 PathProgramCache]: Analyzing trace with hash 66008015, now seen corresponding path program 1 times [2018-10-27 06:11:56,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:56,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:56,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:56,185 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:56,195 INFO L82 PathProgramCache]: Analyzing trace with hash -350231361, now seen corresponding path program 1 times [2018-10-27 06:11:56,196 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:56,196 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:56,197 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,197 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:56,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:56,239 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:56,239 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:56,239 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:56,239 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:56,239 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:56,239 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:56,239 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:56,239 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:56,240 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration5_Loop [2018-10-27 06:11:56,240 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:56,240 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:56,241 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:56,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:56,314 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:56,315 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:56,325 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:56,326 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:56,331 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:56,331 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post6=0} Honda state: {ULTIMATE.start_main_#t~post6=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:56,350 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:56,350 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:56,374 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:56,374 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:56,730 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:56,732 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:56,732 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:56,732 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:56,732 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:56,733 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:56,733 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:56,733 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:56,733 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:56,733 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration5_Loop [2018-10-27 06:11:56,733 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:56,733 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:56,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:56,741 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:56,833 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:56,833 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:56,834 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:56,834 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:56,834 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:56,834 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:56,834 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:56,834 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:56,835 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:56,835 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:56,836 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:56,836 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:56,836 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:56,837 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:56,837 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:56,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:56,837 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:56,841 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:56,841 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:56,844 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:56,849 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:56,850 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:56,850 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:56,850 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:56,850 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:56,850 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-10-27 06:11:56,851 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:56,867 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:56,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:56,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:56,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:57,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:57,002 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:57,002 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 19 Second operand 4 states. [2018-10-27 06:11:57,248 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 82 states and 96 transitions. cyclomatic complexity: 19. Second operand 4 states. Result 257 states and 303 transitions. Complement of second has 7 states. [2018-10-27 06:11:57,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2018-10-27 06:11:57,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 10 letters. Loop has 5 letters. [2018-10-27 06:11:57,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:57,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 15 letters. Loop has 5 letters. [2018-10-27 06:11:57,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:57,250 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 10 letters. Loop has 10 letters. [2018-10-27 06:11:57,250 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:57,251 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 257 states and 303 transitions. [2018-10-27 06:11:57,253 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 36 [2018-10-27 06:11:57,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 257 states to 190 states and 222 transitions. [2018-10-27 06:11:57,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2018-10-27 06:11:57,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-10-27 06:11:57,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 190 states and 222 transitions. [2018-10-27 06:11:57,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:57,255 INFO L705 BuchiCegarLoop]: Abstraction has 190 states and 222 transitions. [2018-10-27 06:11:57,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states and 222 transitions. [2018-10-27 06:11:57,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 147. [2018-10-27 06:11:57,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-10-27 06:11:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 171 transitions. [2018-10-27 06:11:57,265 INFO L728 BuchiCegarLoop]: Abstraction has 147 states and 171 transitions. [2018-10-27 06:11:57,265 INFO L608 BuchiCegarLoop]: Abstraction has 147 states and 171 transitions. [2018-10-27 06:11:57,266 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-10-27 06:11:57,266 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 147 states and 171 transitions. [2018-10-27 06:11:57,268 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 28 [2018-10-27 06:11:57,268 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:57,268 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:57,269 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:57,269 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:57,269 INFO L793 eck$LassoCheckResult]: Stem: 1053#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1044#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 1045#L14 assume !!(main_~n~0 < 1000000); 1013#L15 assume main_~k~0 == main_~n~0; 1014#L15-1 main_~i~0 := 0; 1007#L19-4 assume true; 1009#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1116#L20-4 assume true; 1114#L20-1 assume !!(main_~j~0 < main_~n~0); 1115#L21 assume !(main_#t~nondet5 != 0);havoc main_#t~nondet5;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1106#L4-3 assume !(__VERIFIER_assert_~cond == 0); 1107#L4-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1096#L4-6 assume !(__VERIFIER_assert_~cond == 0); 1097#L4-8 assume { :end_inline___VERIFIER_assert } true; 1091#L20-3 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 + 1;havoc main_#t~post4; 1092#L20-4 assume true; 1086#L20-1 assume !(main_~j~0 < main_~n~0); 1085#L19-3 main_#t~post3 := main_~i~0;main_~i~0 := main_#t~post3 + 1;havoc main_#t~post3; 1010#L19-4 assume true; 1011#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 1022#L20-4 [2018-10-27 06:11:57,269 INFO L795 eck$LassoCheckResult]: Loop: 1022#L20-4 assume true; 1076#L20-1 assume !!(main_~j~0 < main_~n~0); 1048#L21 assume !(main_#t~nondet5 != 0);havoc main_#t~nondet5;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1049#L4-3 assume !(__VERIFIER_assert_~cond == 0); 1079#L4-5 assume { :end_inline___VERIFIER_assert } true;assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 <= main_~n~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 1078#L4-6 assume !(__VERIFIER_assert_~cond == 0); 1077#L4-8 assume { :end_inline___VERIFIER_assert } true; 1021#L20-3 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 + 1;havoc main_#t~post4; 1022#L20-4 [2018-10-27 06:11:57,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:57,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1366941033, now seen corresponding path program 1 times [2018-10-27 06:11:57,270 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:57,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:57,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:57,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:57,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:57,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:57,316 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:57,317 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:11:57,317 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:11:57,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:57,333 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:57,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:57,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:11:57,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2018-10-27 06:11:57,430 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:11:57,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:57,431 INFO L82 PathProgramCache]: Analyzing trace with hash -1849498602, now seen corresponding path program 2 times [2018-10-27 06:11:57,431 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:57,431 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:57,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:57,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:57,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:57,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:57,553 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:57,553 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:57,553 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:57,553 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:57,553 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:57,553 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:57,553 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:57,553 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:57,553 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration6_Loop [2018-10-27 06:11:57,553 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:57,554 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:57,554 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:57,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:57,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:57,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:57,612 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:57,612 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:57,631 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:57,631 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:57,649 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:57,649 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~post4=0} Honda state: {ULTIMATE.start_main_#t~post4=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:57,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:57,671 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:57,676 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:11:57,677 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet5=0} Honda state: {ULTIMATE.start_main_#t~nondet5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:57,695 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:57,695 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:57,715 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:57,715 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:11:58,078 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:58,080 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:58,080 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:58,080 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:58,080 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:58,080 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:58,080 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:58,080 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:58,080 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:58,080 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration6_Loop [2018-10-27 06:11:58,080 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:58,080 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:58,082 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,094 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,131 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:58,132 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:58,132 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:58,132 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:58,132 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:58,133 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:58,133 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:58,133 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:58,133 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:58,133 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:58,134 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:58,134 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:58,135 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:58,135 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:58,135 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:58,135 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:58,135 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:58,135 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:58,135 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:58,136 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:58,140 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:58,141 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:58,141 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:58,141 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:58,141 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:58,141 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:58,142 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:58,142 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:58,144 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:58,144 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:58,145 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:58,145 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:58,145 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:58,145 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:58,145 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:58,146 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:58,146 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:58,152 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:58,155 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:58,157 INFO L444 ModelExtractionUtils]: 1 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:58,158 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:58,158 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:58,158 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:58,158 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0, ULTIMATE.start_main_~j~0) = 1*ULTIMATE.start_main_~n~0 - 1*ULTIMATE.start_main_~j~0 Supporting invariants [] [2018-10-27 06:11:58,158 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:58,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,185 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,209 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:58,229 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:58,230 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37 Second operand 4 states. [2018-10-27 06:11:58,282 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37. Second operand 4 states. Result 228 states and 265 transitions. Complement of second has 7 states. [2018-10-27 06:11:58,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:58,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:58,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-10-27 06:11:58,286 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 20 letters. Loop has 8 letters. [2018-10-27 06:11:58,286 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:58,286 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:58,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:58,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:58,333 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:58,333 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37 Second operand 4 states. [2018-10-27 06:11:58,360 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37. Second operand 4 states. Result 228 states and 265 transitions. Complement of second has 7 states. [2018-10-27 06:11:58,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:58,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 25 transitions. [2018-10-27 06:11:58,362 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 25 transitions. Stem has 20 letters. Loop has 8 letters. [2018-10-27 06:11:58,362 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:58,362 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:58,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,378 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:58,414 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:58,414 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37 Second operand 4 states. [2018-10-27 06:11:58,467 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 147 states and 171 transitions. cyclomatic complexity: 37. Second operand 4 states. Result 278 states and 325 transitions. Complement of second has 6 states. [2018-10-27 06:11:58,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2018-10-27 06:11:58,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 20 letters. Loop has 8 letters. [2018-10-27 06:11:58,469 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:58,469 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 28 letters. Loop has 8 letters. [2018-10-27 06:11:58,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:58,470 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 20 letters. Loop has 16 letters. [2018-10-27 06:11:58,470 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:58,470 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 278 states and 325 transitions. [2018-10-27 06:11:58,472 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 10 [2018-10-27 06:11:58,473 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 278 states to 160 states and 186 transitions. [2018-10-27 06:11:58,473 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 26 [2018-10-27 06:11:58,473 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-10-27 06:11:58,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 160 states and 186 transitions. [2018-10-27 06:11:58,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:58,474 INFO L705 BuchiCegarLoop]: Abstraction has 160 states and 186 transitions. [2018-10-27 06:11:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states and 186 transitions. [2018-10-27 06:11:58,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 87. [2018-10-27 06:11:58,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-10-27 06:11:58,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2018-10-27 06:11:58,480 INFO L728 BuchiCegarLoop]: Abstraction has 87 states and 102 transitions. [2018-10-27 06:11:58,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-27 06:11:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-10-27 06:11:58,480 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 11 states. [2018-10-27 06:11:58,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:58,555 INFO L93 Difference]: Finished difference Result 267 states and 306 transitions. [2018-10-27 06:11:58,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 06:11:58,557 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 267 states and 306 transitions. [2018-10-27 06:11:58,558 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 15 [2018-10-27 06:11:58,560 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 267 states to 257 states and 296 transitions. [2018-10-27 06:11:58,560 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-10-27 06:11:58,560 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-10-27 06:11:58,560 INFO L73 IsDeterministic]: Start isDeterministic. Operand 257 states and 296 transitions. [2018-10-27 06:11:58,560 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:11:58,560 INFO L705 BuchiCegarLoop]: Abstraction has 257 states and 296 transitions. [2018-10-27 06:11:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states and 296 transitions. [2018-10-27 06:11:58,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 104. [2018-10-27 06:11:58,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-10-27 06:11:58,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 121 transitions. [2018-10-27 06:11:58,567 INFO L728 BuchiCegarLoop]: Abstraction has 104 states and 121 transitions. [2018-10-27 06:11:58,567 INFO L608 BuchiCegarLoop]: Abstraction has 104 states and 121 transitions. [2018-10-27 06:11:58,567 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-10-27 06:11:58,567 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 104 states and 121 transitions. [2018-10-27 06:11:58,568 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:11:58,568 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:58,568 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:58,569 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:11:58,569 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:11:58,569 INFO L793 eck$LassoCheckResult]: Stem: 2635#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 2630#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet1, main_#t~nondet2, main_#t~nondet5, main_#t~post6, main_#t~post4, main_#t~post3, main_~i~0, main_~j~0, main_~k~0, main_~n~0;havoc main_~i~0;havoc main_~j~0;havoc main_~k~0;havoc main_~n~0;main_~k~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~n~0 := main_#t~nondet2;havoc main_#t~nondet2; 2631#L14 assume !!(main_~n~0 < 1000000); 2603#L15 assume main_~k~0 == main_~n~0; 2604#L15-1 main_~i~0 := 0; 2605#L19-4 assume true; 2606#L19-1 assume !!(main_~i~0 < main_~n~0);main_~j~0 := 2 * main_~i~0; 2610#L20-4 assume true; 2611#L20-1 assume !!(main_~j~0 < main_~n~0); 2627#L21 assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 2619#L22-4 assume true; 2620#L22-1 assume !!(main_~k~0 < main_~n~0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2633#L4 assume !(__VERIFIER_assert_~cond == 0); 2637#L4-2 assume { :end_inline___VERIFIER_assert } true; 2623#L22-3 main_#t~post6 := main_~k~0;main_~k~0 := main_#t~post6 + 1;havoc main_#t~post6; 2624#L22-4 assume true; 2684#L22-1 assume !(main_~k~0 < main_~n~0); 2654#L20-3 main_#t~post4 := main_~j~0;main_~j~0 := main_#t~post4 + 1;havoc main_#t~post4; 2640#L20-4 assume true; 2625#L20-1 assume !!(main_~j~0 < main_~n~0); 2626#L21 assume main_#t~nondet5 != 0;havoc main_#t~nondet5;main_~k~0 := main_~j~0; 2617#L22-4 [2018-10-27 06:11:58,569 INFO L795 eck$LassoCheckResult]: Loop: 2617#L22-4 assume true; 2618#L22-1 assume !!(main_~k~0 < main_~n~0);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond := (if main_~k~0 >= 2 * main_~i~0 then 1 else 0);havoc __VERIFIER_assert_~cond;__VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; 2632#L4 assume !(__VERIFIER_assert_~cond == 0); 2636#L4-2 assume { :end_inline___VERIFIER_assert } true; 2622#L22-3 main_#t~post6 := main_~k~0;main_~k~0 := main_#t~post6 + 1;havoc main_#t~post6; 2617#L22-4 [2018-10-27 06:11:58,569 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:58,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1586620147, now seen corresponding path program 1 times [2018-10-27 06:11:58,569 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:58,569 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:58,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:58,576 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:11:58,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:58,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:58,608 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 06:11:58,608 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 06:11:58,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:58,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:58,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-27 06:11:58,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-10-27 06:11:58,646 INFO L798 eck$LassoCheckResult]: stem already infeasible [2018-10-27 06:11:58,646 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:58,646 INFO L82 PathProgramCache]: Analyzing trace with hash 66008015, now seen corresponding path program 2 times [2018-10-27 06:11:58,646 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:58,646 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:58,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:58,647 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:58,647 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:58,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:58,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:58,673 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:58,673 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:58,673 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:58,673 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:58,673 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:11:58,673 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:58,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:58,673 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:58,674 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration7_Loop [2018-10-27 06:11:58,674 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:58,674 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:58,675 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,682 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:58,716 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:58,716 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:58,729 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:11:58,732 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1270a6b6-f99b-4e6b-86fe-3de2044e108d/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 06:11:58,780 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:11:58,780 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:59,123 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:11:59,125 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:11:59,125 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:11:59,125 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:11:59,125 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:11:59,125 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:11:59,125 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:11:59,125 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:11:59,125 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:11:59,125 INFO L131 ssoRankerPreferences]: Filename of dumped script: nested6_true-unreach-call_true-termination.i_Iteration7_Loop [2018-10-27 06:11:59,125 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:11:59,125 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:11:59,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:59,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:11:59,208 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:11:59,208 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:11:59,208 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:59,209 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:59,209 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:59,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:59,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:59,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:59,209 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:59,209 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:59,210 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:11:59,210 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:11:59,210 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:11:59,210 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:11:59,211 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:11:59,211 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:11:59,211 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:11:59,211 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:11:59,211 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:11:59,221 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:11:59,224 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-10-27 06:11:59,224 INFO L444 ModelExtractionUtils]: 3 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:11:59,224 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:11:59,225 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:11:59,225 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:11:59,225 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~k~0, ULTIMATE.start_main_~n~0) = -1*ULTIMATE.start_main_~k~0 + 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-10-27 06:11:59,226 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:11:59,238 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:59,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,255 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:59,261 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:59,262 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25 Second operand 4 states. [2018-10-27 06:11:59,289 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25. Second operand 4 states. Result 178 states and 211 transitions. Complement of second has 7 states. [2018-10-27 06:11:59,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:59,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2018-10-27 06:11:59,290 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 21 letters. Loop has 5 letters. [2018-10-27 06:11:59,291 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:59,291 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:59,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,304 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:59,318 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:59,318 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25 Second operand 4 states. [2018-10-27 06:11:59,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25. Second operand 4 states. Result 178 states and 211 transitions. Complement of second has 7 states. [2018-10-27 06:11:59,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:59,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:59,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 36 transitions. [2018-10-27 06:11:59,341 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 36 transitions. Stem has 21 letters. Loop has 5 letters. [2018-10-27 06:11:59,341 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:59,341 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:11:59,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,363 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:11:59,367 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:11:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:11:59,373 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-10-27 06:11:59,373 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25 Second operand 4 states. [2018-10-27 06:11:59,419 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 104 states and 121 transitions. cyclomatic complexity: 25. Second operand 4 states. Result 169 states and 201 transitions. Complement of second has 6 states. [2018-10-27 06:11:59,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-10-27 06:11:59,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:11:59,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 43 transitions. [2018-10-27 06:11:59,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 21 letters. Loop has 5 letters. [2018-10-27 06:11:59,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:59,420 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 26 letters. Loop has 5 letters. [2018-10-27 06:11:59,420 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:59,421 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 43 transitions. Stem has 21 letters. Loop has 10 letters. [2018-10-27 06:11:59,421 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:11:59,421 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 169 states and 201 transitions. [2018-10-27 06:11:59,422 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:59,422 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 169 states to 0 states and 0 transitions. [2018-10-27 06:11:59,422 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:11:59,422 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:11:59,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:11:59,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:59,423 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:59,423 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:59,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 06:11:59,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 06:11:59,423 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-10-27 06:11:59,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:11:59,423 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-10-27 06:11:59,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-27 06:11:59,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-10-27 06:11:59,423 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:59,424 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-10-27 06:11:59,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:11:59,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:11:59,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:11:59,424 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:11:59,424 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:59,424 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:59,424 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:11:59,424 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-10-27 06:11:59,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:11:59,425 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:11:59,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:11:59,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:11:59 BoogieIcfgContainer [2018-10-27 06:11:59,431 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:11:59,431 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:11:59,431 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:11:59,431 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:11:59,432 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:53" (3/4) ... [2018-10-27 06:11:59,435 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:11:59,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:11:59,436 INFO L168 Benchmark]: Toolchain (without parser) took 7003.80 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 962.4 MB in the beginning and 976.4 MB in the end (delta: -14.1 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:59,437 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:59,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 170.92 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:59,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:59,438 INFO L168 Benchmark]: Boogie Preprocessor took 16.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:59,438 INFO L168 Benchmark]: RCFGBuilder took 507.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:59,439 INFO L168 Benchmark]: BuchiAutomizer took 6274.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.4 MB in the end (delta: 161.0 MB). Peak memory consumption was 161.0 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:59,440 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 1.2 GB. Free memory is still 976.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:59,442 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 170.92 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.94 ms. Allocated memory is still 1.0 GB. Free memory is still 951.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.13 ms. Allocated memory is still 1.0 GB. Free memory was 951.6 MB in the beginning and 946.2 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 507.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -191.2 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6274.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 976.4 MB in the end (delta: 161.0 MB). Peak memory consumption was 161.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.35 ms. Allocated memory is still 1.2 GB. Free memory is still 976.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (5 trivial, 3 deterministic, 2 nondeterministic). One deterministic module has affine ranking function n + -1 * i and consists of 4 locations. One deterministic module has affine ranking function -1 * j + n and consists of 4 locations. One deterministic module has affine ranking function -1 * k + n and consists of 4 locations. One nondeterministic module has affine ranking function n + -1 * j and consists of 4 locations. One nondeterministic module has affine ranking function -1 * k + n and consists of 4 locations. 5 modules have a trivial ranking function, the largest among these consists of 11 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 4.5s. Construction of modules took 0.5s. Büchi inclusion checks took 0.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 7. Automata minimization 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 306 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 147 states and ocurred in iteration 5. Nontrivial modules had stage [3, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 306 SDtfs, 457 SDslu, 217 SDs, 0 SdLazy, 280 SolverSat, 29 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital24 mio100 ax100 hnf98 lsp85 ukn100 mio100 lsp100 div100 bol100 ite114 ukn100 eq152 hnf93 smp82 dnf98 smp100 tf107 neg98 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 28ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...