./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 15:08:16,841 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 15:08:16,842 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 15:08:16,848 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 15:08:16,849 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 15:08:16,849 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 15:08:16,850 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 15:08:16,851 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 15:08:16,852 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 15:08:16,853 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 15:08:16,853 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 15:08:16,853 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 15:08:16,854 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 15:08:16,855 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 15:08:16,856 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 15:08:16,856 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 15:08:16,857 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 15:08:16,858 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 15:08:16,859 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 15:08:16,860 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 15:08:16,861 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 15:08:16,862 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 15:08:16,863 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 15:08:16,863 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 15:08:16,864 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 15:08:16,864 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 15:08:16,865 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 15:08:16,865 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 15:08:16,865 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 15:08:16,866 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 15:08:16,866 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 15:08:16,867 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 15:08:16,867 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 15:08:16,867 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 15:08:16,868 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 15:08:16,868 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 15:08:16,869 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-23 15:08:16,877 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 15:08:16,877 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 15:08:16,878 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 15:08:16,879 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 15:08:16,879 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 15:08:16,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 15:08:16,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 15:08:16,881 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 15:08:16,882 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 15:08:16,882 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 15:08:16,882 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 15:08:16,882 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 15:08:16,882 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 15:08:16,882 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 15:08:16,883 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 15:08:16,883 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_4367919d-b3bb-4bfb-9944-f785e773587c/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 -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-11-23 15:08:16,907 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 15:08:16,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 15:08:16,918 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 15:08:16,919 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 15:08:16,919 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 15:08:16,920 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 15:08:16,959 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/data/4cce5b72d/c56dda0ac1704614a8baafb96d91a02c/FLAG306958333 [2018-11-23 15:08:17,368 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 15:08:17,369 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 15:08:17,373 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/data/4cce5b72d/c56dda0ac1704614a8baafb96d91a02c/FLAG306958333 [2018-11-23 15:08:17,384 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/data/4cce5b72d/c56dda0ac1704614a8baafb96d91a02c [2018-11-23 15:08:17,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 15:08:17,388 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 15:08:17,389 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 15:08:17,389 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 15:08:17,392 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 15:08:17,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fbeed0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17, skipping insertion in model container [2018-11-23 15:08:17,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 15:08:17,418 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 15:08:17,543 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:08:17,545 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 15:08:17,553 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 15:08:17,562 INFO L195 MainTranslator]: Completed translation [2018-11-23 15:08:17,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17 WrapperNode [2018-11-23 15:08:17,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 15:08:17,563 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 15:08:17,563 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 15:08:17,563 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 15:08:17,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,583 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 15:08:17,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 15:08:17,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 15:08:17,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 15:08:17,588 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,589 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,589 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,592 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... [2018-11-23 15:08:17,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 15:08:17,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 15:08:17,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 15:08:17,593 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 15:08:17,594 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 15:08:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 15:08:17,665 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-23 15:08:17,665 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-23 15:08:17,749 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 15:08:17,749 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-23 15:08:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:17 BoogieIcfgContainer [2018-11-23 15:08:17,749 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 15:08:17,750 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 15:08:17,750 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 15:08:17,753 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 15:08:17,754 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:08:17,754 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 03:08:17" (1/3) ... [2018-11-23 15:08:17,755 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52c9fc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:08:17, skipping insertion in model container [2018-11-23 15:08:17,755 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:08:17,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:08:17" (2/3) ... [2018-11-23 15:08:17,755 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@52c9fc3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 03:08:17, skipping insertion in model container [2018-11-23 15:08:17,755 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 15:08:17,755 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:17" (3/3) ... [2018-11-23 15:08:17,756 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-23 15:08:17,790 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 15:08:17,790 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 15:08:17,790 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 15:08:17,791 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 15:08:17,791 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 15:08:17,791 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 15:08:17,791 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 15:08:17,791 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 15:08:17,791 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 15:08:17,800 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-23 15:08:17,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:08:17,816 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:17,816 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:17,822 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 15:08:17,822 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:08:17,822 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 15:08:17,822 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-23 15:08:17,823 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:08:17,824 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:17,824 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:17,824 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-23 15:08:17,824 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:08:17,831 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2018-11-23 15:08:17,831 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2018-11-23 15:08:17,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:17,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2018-11-23 15:08:17,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:17,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:17,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:17,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:17,899 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2018-11-23 15:08:17,899 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:17,899 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:17,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,900 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:17,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:17,912 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2018-11-23 15:08:17,912 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:17,912 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:17,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:17,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:17,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:17,971 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:17,972 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:17,972 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:17,972 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:17,972 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:08:17,972 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:17,972 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:17,972 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:17,972 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 15:08:17,973 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:17,973 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:17,990 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:17,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,055 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:18,056 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,062 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:18,062 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:18,068 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:18,068 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,094 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:18,094 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:18,097 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:18,097 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:18,112 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,128 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:08:18,128 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:18,144 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:08:18,145 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:18,145 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:18,145 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:18,146 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:18,146 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:08:18,146 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:18,146 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:18,146 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:18,146 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-23 15:08:18,146 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:18,146 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:18,147 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,149 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,150 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,156 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,205 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:18,209 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:08:18,211 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 [2018-11-23 15:08:18,212 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:18,212 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:18,213 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:18,213 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:18,213 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:18,215 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:18,215 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:18,218 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:18,219 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 [2018-11-23 15:08:18,219 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:18,219 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:18,220 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:18,220 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:18,220 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:18,220 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:18,220 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:18,222 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:18,222 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 [2018-11-23 15:08:18,222 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:18,222 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:18,223 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:18,223 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:18,223 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:18,223 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:18,224 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:18,229 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:08:18,233 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:08:18,233 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 15:08:18,234 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:08:18,235 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:08:18,235 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:08:18,235 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-23 15:08:18,236 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:08:18,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:18,279 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:18,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:18,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:18,338 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 15:08:18,339 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2018-11-23 15:08:18,435 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 4 states. Result 33 states and 41 transitions. Complement of second has 12 states. [2018-11-23 15:08:18,435 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 [2018-11-23 15:08:18,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 15:08:18,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-23 15:08:18,437 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-23 15:08:18,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:18,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-23 15:08:18,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:18,438 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-23 15:08:18,438 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:18,439 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2018-11-23 15:08:18,441 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:08:18,446 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2018-11-23 15:08:18,446 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-23 15:08:18,446 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-23 15:08:18,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-23 15:08:18,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:18,448 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-23 15:08:18,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-23 15:08:18,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-23 15:08:18,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-23 15:08:18,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-11-23 15:08:18,468 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-23 15:08:18,468 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-23 15:08:18,468 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 15:08:18,468 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-11-23 15:08:18,468 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 15:08:18,469 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:18,469 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:18,469 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:08:18,469 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 15:08:18,469 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2018-11-23 15:08:18,470 INFO L796 eck$LassoCheckResult]: Loop: 101#L19-1 call #t~ret1 := f91(#t~ret0);< 106#f91ENTRY ~x := #in~x; 113#L16 assume !(~x > 100); 102#L19 call #t~ret0 := f91(11 + ~x);< 106#f91ENTRY ~x := #in~x; 113#L16 assume ~x > 100;#res := ~x - 10; 103#f91FINAL assume true; 108#f91EXIT >#26#return; 101#L19-1 [2018-11-23 15:08:18,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2018-11-23 15:08:18,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:18,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:18,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:18,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,478 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:18,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2018-11-23 15:08:18,478 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:18,478 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:18,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:18,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:18,485 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2018-11-23 15:08:18,485 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:18,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:18,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:18,486 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:18,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:18,585 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:18,585 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:18,586 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:18,586 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:18,586 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:08:18,586 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:18,586 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:18,586 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:18,586 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 15:08:18,586 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:18,586 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:18,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,602 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:18,643 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:18,643 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,645 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:18,645 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:18,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:08:18,669 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:30,699 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 15:08:30,702 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:30,702 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:30,702 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:30,702 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:30,702 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:08:30,702 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:30,703 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:30,703 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:30,703 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-23 15:08:30,703 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:30,703 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:30,704 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:30,711 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:30,713 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:30,741 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:30,742 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:08:30,742 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 [2018-11-23 15:08:30,743 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:30,743 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:30,743 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:30,744 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:30,744 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:30,745 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:30,745 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:30,753 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:08:30,757 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:08:30,758 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 15:08:30,758 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:08:30,758 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:08:30,758 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:08:30,758 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-23 15:08:30,759 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:08:30,774 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:30,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:30,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:30,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:30,887 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 15:08:30,891 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-23 15:08:31,041 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 50 states and 72 transitions. Complement of second has 32 states. [2018-11-23 15:08:31,042 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 15:08:31,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 15:08:31,044 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-23 15:08:31,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:31,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2018-11-23 15:08:31,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:31,046 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2018-11-23 15:08:31,046 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:31,047 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2018-11-23 15:08:31,050 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-23 15:08:31,052 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2018-11-23 15:08:31,052 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-23 15:08:31,053 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-23 15:08:31,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2018-11-23 15:08:31,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:31,053 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2018-11-23 15:08:31,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2018-11-23 15:08:31,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-23 15:08:31,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-23 15:08:31,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2018-11-23 15:08:31,057 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-23 15:08:31,057 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-23 15:08:31,057 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 15:08:31,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2018-11-23 15:08:31,058 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-23 15:08:31,058 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:31,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:31,058 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 15:08:31,058 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-23 15:08:31,059 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2018-11-23 15:08:31,059 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2018-11-23 15:08:31,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:31,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2018-11-23 15:08:31,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:31,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:31,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:31,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:31,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:31,067 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2018-11-23 15:08:31,067 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:31,067 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:31,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:08:31,068 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:31,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2018-11-23 15:08:31,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:31,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:31,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,072 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:08:31,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 15:08:31,122 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 15:08:31,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-23 15:08:31,141 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:31,141 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:31,141 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:31,141 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:31,141 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:08:31,141 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:31,141 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:31,142 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:31,142 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 15:08:31,142 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:31,142 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:31,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:31,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:31,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:31,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:31,169 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:31,169 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:31,181 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:31,181 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:31,184 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:31,184 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:31,199 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:31,199 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:31,201 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:31,201 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 10 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:31,217 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:31,217 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:31,219 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:31,219 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:31,233 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:31,234 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:31,255 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:08:31,255 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:43,276 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 15:08:43,279 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:43,279 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:43,279 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:43,280 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:43,280 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:08:43,280 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:43,280 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:43,280 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:43,280 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-23 15:08:43,280 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:43,280 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:43,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,284 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,311 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:43,311 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:08:43,311 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 [2018-11-23 15:08:43,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:43,312 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:43,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:43,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:43,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:43,313 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:43,313 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:43,314 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:43,314 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 [2018-11-23 15:08:43,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:43,314 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:43,315 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:43,315 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:43,315 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:43,315 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:43,315 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:43,316 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:43,316 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 [2018-11-23 15:08:43,317 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:43,317 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:43,317 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:43,317 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:43,317 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:43,318 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:43,318 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:43,318 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:43,319 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 [2018-11-23 15:08:43,319 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:43,319 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:43,319 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:43,320 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:43,320 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:43,320 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:43,320 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:43,324 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:08:43,326 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:08:43,326 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 15:08:43,326 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:08:43,326 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:08:43,327 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:08:43,327 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-23 15:08:43,327 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:08:43,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:43,389 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 15:08:43,389 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 15:08:43,431 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-23 15:08:43,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:43,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 15:08:43,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-23 15:08:43,435 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 15:08:43,435 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:43,435 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:43,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:43,483 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 15:08:43,483 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 15:08:43,522 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-23 15:08:43,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:43,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 15:08:43,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-23 15:08:43,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 15:08:43,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:43,523 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:43,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,540 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,554 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:43,570 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-23 15:08:43,570 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-23 15:08:43,620 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 70 states and 99 transitions. Complement of second has 16 states. [2018-11-23 15:08:43,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:43,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 15:08:43,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-11-23 15:08:43,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-23 15:08:43,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:43,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-23 15:08:43,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:43,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-23 15:08:43,623 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:43,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2018-11-23 15:08:43,624 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-23 15:08:43,625 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2018-11-23 15:08:43,626 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-23 15:08:43,626 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-23 15:08:43,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2018-11-23 15:08:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:43,626 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2018-11-23 15:08:43,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2018-11-23 15:08:43,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-11-23 15:08:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-23 15:08:43,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2018-11-23 15:08:43,630 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2018-11-23 15:08:43,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-23 15:08:43,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-23 15:08:43,632 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2018-11-23 15:08:43,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:08:43,688 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-11-23 15:08:43,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-23 15:08:43,688 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2018-11-23 15:08:43,690 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 15:08:43,691 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2018-11-23 15:08:43,691 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-23 15:08:43,691 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-23 15:08:43,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2018-11-23 15:08:43,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:43,692 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-23 15:08:43,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2018-11-23 15:08:43,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-23 15:08:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-23 15:08:43,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2018-11-23 15:08:43,697 INFO L728 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-23 15:08:43,697 INFO L608 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-23 15:08:43,697 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 15:08:43,697 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2018-11-23 15:08:43,698 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-23 15:08:43,698 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:43,698 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:43,698 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-23 15:08:43,698 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-23 15:08:43,699 INFO L794 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 812#L26 call main_#t~ret3 := f91(main_~x~0);< 813#f91ENTRY ~x := #in~x; 834#L16 assume !(~x > 100); 835#L19 call #t~ret0 := f91(11 + ~x);< 841#f91ENTRY ~x := #in~x; 844#L16 assume !(~x > 100); 839#L19 call #t~ret0 := f91(11 + ~x);< 842#f91ENTRY ~x := #in~x; 845#L16 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 840#f91EXIT >#26#return; 810#L19-1 call #t~ret1 := f91(#t~ret0);< 817#f91ENTRY ~x := #in~x; 859#L16 assume ~x > 100;#res := ~x - 10; 858#f91FINAL assume true; 855#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 848#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-23 15:08:43,699 INFO L796 eck$LassoCheckResult]: Loop: 851#f91ENTRY ~x := #in~x; 846#L16 assume !(~x > 100); 821#L19 call #t~ret0 := f91(11 + ~x);< 822#f91ENTRY ~x := #in~x; 830#L16 assume !(~x > 100); 820#L19 call #t~ret0 := f91(11 + ~x);< 823#f91ENTRY ~x := #in~x; 829#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 831#f91EXIT >#26#return; 807#L19-1 call #t~ret1 := f91(#t~ret0);< 815#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 824#f91FINAL assume true; 825#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 847#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-23 15:08:43,699 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,699 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2018-11-23 15:08:43,699 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:43,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,699 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:08:43,699 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:43,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2018-11-23 15:08:43,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:43,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:43,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:43,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:43,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:43,716 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:43,717 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2018-11-23 15:08:43,717 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:43,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:43,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,717 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 15:08:43,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:43,756 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-23 15:08:43,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:08:43,757 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:08:43,769 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-23 15:08:43,778 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-23 15:08:43,778 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:08:43,779 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:43,786 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-23 15:08:43,813 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 15:08:43,813 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-23 15:08:43,938 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:43,938 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:43,938 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:43,938 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:43,938 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:08:43,938 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:43,938 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:43,938 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:43,938 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-23 15:08:43,939 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:43,939 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:43,939 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,944 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,946 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,950 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:43,975 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:43,976 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:43,982 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:43,982 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:43,984 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:43,984 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:44,014 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:44,014 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:44,016 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:44,016 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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 [2018-11-23 15:08:44,046 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:44,046 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:44,048 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:44,048 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/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) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:44,073 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:44,073 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:44,075 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:44,075 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:44,093 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:44,093 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:44,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:08:44,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:44,426 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 15:08:44,427 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:44,427 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:44,428 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:44,428 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:44,428 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:08:44,428 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:44,428 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:44,428 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:44,428 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-23 15:08:44,428 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:44,428 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:44,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:44,429 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:44,430 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:44,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:44,432 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:44,449 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:44,449 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:08:44,450 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 [2018-11-23 15:08:44,450 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:44,450 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:44,450 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:44,450 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:44,450 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:44,450 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:44,451 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:44,451 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:44,451 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 [2018-11-23 15:08:44,451 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:44,451 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:44,451 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:44,452 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:44,452 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:44,452 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:44,452 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:44,452 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:44,452 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 [2018-11-23 15:08:44,453 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:44,453 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:44,453 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:44,453 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:44,453 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:44,453 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:44,453 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:44,453 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:44,454 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 [2018-11-23 15:08:44,454 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:44,454 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:44,454 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:44,454 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:44,454 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:44,454 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:44,454 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:44,455 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 15:08:44,455 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 [2018-11-23 15:08:44,455 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:44,455 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:44,455 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:44,455 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:44,455 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:44,456 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:44,456 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:44,458 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:08:44,459 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:08:44,459 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 15:08:44,459 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:08:44,459 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:08:44,460 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:08:44,460 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-23 15:08:44,460 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:08:44,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:44,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:44,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:44,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 15:08:44,621 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 15:08:44,622 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 15:08:44,878 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-23 15:08:44,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 15:08:44,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-23 15:08:44,879 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 15:08:44,879 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:44,879 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:44,886 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:44,903 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:44,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:45,022 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 15:08:45,023 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 15:08:45,023 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 15:08:45,256 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-23 15:08:45,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:45,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 15:08:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-23 15:08:45,257 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 15:08:45,257 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:45,257 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:45,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:45,277 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:45,302 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:45,377 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-23 15:08:45,377 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-23 15:08:45,377 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-23 15:08:45,873 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 430 states and 530 transitions. Complement of second has 216 states. [2018-11-23 15:08:45,874 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:45,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-23 15:08:45,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2018-11-23 15:08:45,874 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-23 15:08:45,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:45,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2018-11-23 15:08:45,875 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:45,875 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2018-11-23 15:08:45,876 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:45,876 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2018-11-23 15:08:45,882 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-23 15:08:45,886 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2018-11-23 15:08:45,886 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2018-11-23 15:08:45,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2018-11-23 15:08:45,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2018-11-23 15:08:45,887 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:45,887 INFO L705 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2018-11-23 15:08:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2018-11-23 15:08:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2018-11-23 15:08:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-23 15:08:45,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2018-11-23 15:08:45,899 INFO L728 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2018-11-23 15:08:45,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:08:45,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:08:45,899 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 9 states. [2018-11-23 15:08:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:08:46,026 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2018-11-23 15:08:46,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-23 15:08:46,027 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2018-11-23 15:08:46,029 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-23 15:08:46,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2018-11-23 15:08:46,031 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2018-11-23 15:08:46,031 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-23 15:08:46,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2018-11-23 15:08:46,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 15:08:46,031 INFO L705 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2018-11-23 15:08:46,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2018-11-23 15:08:46,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-11-23 15:08:46,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-23 15:08:46,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-11-23 15:08:46,040 INFO L728 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-23 15:08:46,040 INFO L608 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-23 15:08:46,040 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 15:08:46,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2018-11-23 15:08:46,041 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-23 15:08:46,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 15:08:46,041 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 15:08:46,042 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2018-11-23 15:08:46,042 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-23 15:08:46,042 INFO L794 eck$LassoCheckResult]: Stem: 2797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2789#L26 call main_#t~ret3 := f91(main_~x~0);< 2790#f91ENTRY ~x := #in~x; 2818#L16 assume !(~x > 100); 2814#L19 call #t~ret0 := f91(11 + ~x);< 2813#f91ENTRY ~x := #in~x; 2816#L16 assume !(~x > 100); 2815#L19 call #t~ret0 := f91(11 + ~x);< 2847#f91ENTRY ~x := #in~x; 2850#L16 assume ~x > 100;#res := ~x - 10; 2849#f91FINAL assume true; 2848#f91EXIT >#26#return; 2843#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2865#L16 assume ~x > 100;#res := ~x - 10; 2851#f91FINAL assume true; 2842#f91EXIT >#28#return; 2841#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2839#f91FINAL assume true; 2838#f91EXIT >#26#return; 2832#L19-1 call #t~ret1 := f91(#t~ret0);< 2837#f91ENTRY ~x := #in~x; 2835#L16 assume !(~x > 100); 2799#L19 call #t~ret0 := f91(11 + ~x);< 2807#f91ENTRY ~x := #in~x; 2840#L16 assume !(~x > 100); 2800#L19 call #t~ret0 := f91(11 + ~x);< 2806#f91ENTRY ~x := #in~x; 2882#L16 assume ~x > 100;#res := ~x - 10; 2881#f91FINAL assume true; 2878#f91EXIT >#26#return; 2798#L19-1 [2018-11-23 15:08:46,042 INFO L796 eck$LassoCheckResult]: Loop: 2798#L19-1 call #t~ret1 := f91(#t~ret0);< 2801#f91ENTRY ~x := #in~x; 2830#L16 assume !(~x > 100); 2831#L19 call #t~ret0 := f91(11 + ~x);< 2879#f91ENTRY ~x := #in~x; 2886#L16 assume ~x > 100;#res := ~x - 10; 2885#f91FINAL assume true; 2877#f91EXIT >#26#return; 2798#L19-1 [2018-11-23 15:08:46,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:46,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2018-11-23 15:08:46,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:46,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:46,043 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:08:46,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:46,101 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-23 15:08:46,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 15:08:46,102 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 15:08:46,117 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-23 15:08:46,127 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-23 15:08:46,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 15:08:46,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:46,133 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-23 15:08:46,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-23 15:08:46,149 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-23 15:08:46,149 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 15:08:46,149 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:46,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2018-11-23 15:08:46,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 15:08:46,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 15:08:46,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:46,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 15:08:46,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 15:08:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 15:08:46,208 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:46,208 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:46,208 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:46,208 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:46,208 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 15:08:46,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:46,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:46,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:46,208 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-23 15:08:46,208 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:46,208 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:46,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:46,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:46,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:46,231 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:46,231 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:46,234 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:46,234 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:46,236 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:46,236 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:46,251 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:46,251 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:46,253 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 15:08:46,253 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:46,268 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 15:08:46,268 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_4367919d-b3bb-4bfb-9944-f785e773587c/bin-2019/uautomizer/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:46,288 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 15:08:46,289 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 15:08:58,317 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-23 15:08:58,321 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 15:08:58,321 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 15:08:58,321 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 15:08:58,321 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 15:08:58,321 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 15:08:58,321 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 15:08:58,322 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 15:08:58,322 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 15:08:58,322 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-23 15:08:58,322 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 15:08:58,322 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 15:08:58,322 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:58,334 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:58,335 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 15:08:58,354 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 15:08:58,354 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 15:08:58,354 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 [2018-11-23 15:08:58,355 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 15:08:58,355 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 15:08:58,355 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 15:08:58,355 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 15:08:58,355 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 15:08:58,356 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 15:08:58,356 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 15:08:58,359 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 15:08:58,361 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 15:08:58,361 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 15:08:58,361 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 15:08:58,361 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 15:08:58,361 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 15:08:58,362 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-23 15:08:58,362 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 15:08:58,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:58,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,415 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:58,471 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 15:08:58,471 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 15:08:58,586 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-23 15:08:58,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:58,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 15:08:58,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 15:08:58,589 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 15:08:58,589 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:58,589 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:58,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,616 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,682 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:58,682 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 15:08:58,682 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 15:08:58,789 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-23 15:08:58,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 15:08:58,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-23 15:08:58,790 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 15:08:58,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:58,790 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 15:08:58,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 15:08:58,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 15:08:58,843 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 15:08:58,887 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 15:08:58,888 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-23 15:08:58,888 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-23 15:08:59,004 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 180 states and 210 transitions. Complement of second has 27 states. [2018-11-23 15:08:59,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 15:08:59,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-23 15:08:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-11-23 15:08:59,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-23 15:08:59,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:59,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2018-11-23 15:08:59,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:59,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2018-11-23 15:08:59,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 15:08:59,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2018-11-23 15:08:59,008 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:08:59,009 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2018-11-23 15:08:59,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:08:59,009 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:08:59,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:08:59,009 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:08:59,009 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:08:59,009 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:08:59,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-23 15:08:59,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-23 15:08:59,009 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-23 15:08:59,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 15:08:59,010 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-23 15:08:59,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:08:59,010 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 15:08:59,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 15:08:59,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 15:08:59,010 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:08:59,010 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 15:08:59,011 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 15:08:59,011 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 15:08:59,011 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 15:08:59,011 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 15:08:59,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 03:08:59 BoogieIcfgContainer [2018-11-23 15:08:59,019 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 15:08:59,019 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 15:08:59,019 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 15:08:59,019 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 15:08:59,019 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:08:17" (3/4) ... [2018-11-23 15:08:59,022 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 15:08:59,022 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 15:08:59,023 INFO L168 Benchmark]: Toolchain (without parser) took 41635.52 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 181.4 MB). Free memory was 960.8 MB in the beginning and 870.7 MB in the end (delta: 90.2 MB). Peak memory consumption was 271.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:08:59,024 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:08:59,024 INFO L168 Benchmark]: CACSL2BoogieTranslator took 173.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 950.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 15:08:59,025 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.33 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 15:08:59,026 INFO L168 Benchmark]: Boogie Preprocessor took 9.59 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:08:59,026 INFO L168 Benchmark]: RCFGBuilder took 156.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 15:08:59,026 INFO L168 Benchmark]: BuchiAutomizer took 41268.85 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.7 MB). Free memory was 1.1 GB in the beginning and 870.7 MB in the end (delta: 249.8 MB). Peak memory consumption was 296.5 MB. Max. memory is 11.5 GB. [2018-11-23 15:08:59,027 INFO L168 Benchmark]: Witness Printer took 3.42 ms. Allocated memory is still 1.2 GB. Free memory is still 870.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 15:08:59,029 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 173.22 ms. Allocated memory is still 1.0 GB. Free memory was 960.8 MB in the beginning and 950.1 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 20.33 ms. Allocated memory is still 1.0 GB. Free memory was 950.1 MB in the beginning and 944.7 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.59 ms. Allocated memory is still 1.0 GB. Free memory is still 944.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 156.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -175.8 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41268.85 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 46.7 MB). Free memory was 1.1 GB in the beginning and 870.7 MB in the end (delta: 249.8 MB). Peak memory consumption was 296.5 MB. Max. memory is 11.5 GB. * Witness Printer took 3.42 ms. Allocated memory is still 1.2 GB. Free memory is still 870.7 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 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.2s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.0s. Construction of modules took 0.4s. Büchi inclusion checks took 2.5s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 99 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 155 SDtfs, 273 SDslu, 162 SDs, 0 SdLazy, 735 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...