./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 64bit --witnessprinter.graph.data.programhash 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:25:33,891 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:25:33,892 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:25:33,899 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:25:33,900 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:25:33,900 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:25:33,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:25:33,902 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:25:33,903 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:25:33,903 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:25:33,903 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:25:33,904 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:25:33,904 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:25:33,905 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:25:33,905 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:25:33,906 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:25:33,906 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:25:33,907 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:25:33,908 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:25:33,909 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:25:33,910 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:25:33,910 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:25:33,911 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:25:33,911 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:25:33,911 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:25:33,912 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:25:33,913 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:25:33,913 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:25:33,914 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:25:33,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:25:33,914 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:25:33,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:25:33,915 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:25:33,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:25:33,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:25:33,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:25:33,917 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 11:25:33,925 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:25:33,925 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:25:33,926 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:25:33,926 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:25:33,926 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:25:33,926 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 11:25:33,926 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 11:25:33,927 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:25:33,927 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:25:33,928 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 11:25:33,929 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:25:33,929 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 11:25:33,929 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:25:33,929 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:25:33,929 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 11:25:33,929 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:25:33,929 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:25:33,930 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 11:25:33,930 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 11:25:33,930 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_72eccfe4-39df-4c52-a553-4188383e1b53/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2018-11-28 11:25:33,955 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:25:33,964 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:25:33,967 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:25:33,968 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:25:33,968 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:25:33,969 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 11:25:34,014 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/data/b67c0d866/356de20a685d4f7f8057673c232d8606/FLAG93feb534b [2018-11-28 11:25:34,413 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:25:34,413 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 11:25:34,417 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/data/b67c0d866/356de20a685d4f7f8057673c232d8606/FLAG93feb534b [2018-11-28 11:25:34,428 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/data/b67c0d866/356de20a685d4f7f8057673c232d8606 [2018-11-28 11:25:34,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:25:34,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:25:34,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:34,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:25:34,435 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:25:34,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a39b0ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34, skipping insertion in model container [2018-11-28 11:25:34,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,445 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:25:34,457 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:25:34,553 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:34,556 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:25:34,564 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:25:34,572 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:25:34,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34 WrapperNode [2018-11-28 11:25:34,572 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:25:34,573 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:25:34,573 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:25:34,573 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:25:34,578 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:25:34,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:25:34,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:25:34,592 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:25:34,598 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,598 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,603 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... [2018-11-28 11:25:34,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:25:34,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:25:34,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:25:34,604 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:25:34,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:25:34,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:25:34,752 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:25:34,752 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 11:25:34,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:34 BoogieIcfgContainer [2018-11-28 11:25:34,753 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:25:34,753 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 11:25:34,753 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 11:25:34,755 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 11:25:34,756 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:25:34,756 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:25:34" (1/3) ... [2018-11-28 11:25:34,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@306f53a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:25:34, skipping insertion in model container [2018-11-28 11:25:34,757 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:25:34,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:25:34" (2/3) ... [2018-11-28 11:25:34,757 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@306f53a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:25:34, skipping insertion in model container [2018-11-28 11:25:34,757 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:25:34,757 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:34" (3/3) ... [2018-11-28 11:25:34,758 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-11-28 11:25:34,793 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:25:34,794 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 11:25:34,794 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 11:25:34,794 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 11:25:34,794 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:25:34,794 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:25:34,794 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 11:25:34,794 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:25:34,795 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 11:25:34,803 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 11:25:34,816 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:34,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:25:34,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:25:34,820 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 11:25:34,821 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 11:25:34,821 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 11:25:34,821 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 11:25:34,821 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:34,821 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:25:34,821 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:25:34,822 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 11:25:34,822 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 11:25:34,826 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2018-11-28 11:25:34,827 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2018-11-28 11:25:34,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:34,831 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 11:25:34,832 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:34,833 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:34,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:34,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,892 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:34,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 11:25:34,892 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:34,892 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:34,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:34,900 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 11:25:34,901 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:34,901 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:34,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:34,964 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:34,965 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:34,965 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:34,965 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:34,966 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:25:34,966 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:34,966 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:34,966 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:34,966 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 11:25:34,966 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:34,966 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:34,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:34,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:34,999 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,018 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,098 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:35,099 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,111 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,129 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,130 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,132 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,132 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,147 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,147 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,150 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,150 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,167 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:25:35,167 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,183 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:25:35,184 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:35,184 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:35,184 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:35,185 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:35,185 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:25:35,185 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,185 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:35,185 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:35,185 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 11:25:35,185 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:35,185 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:35,187 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,202 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,256 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:35,260 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:25:35,261 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 [2018-11-28 11:25:35,263 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:35,263 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:35,263 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:35,263 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:35,267 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:35,267 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:35,274 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:35,274 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 [2018-11-28 11:25:35,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:35,275 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:35,275 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:35,275 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:35,277 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:35,277 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:35,283 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:35,284 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 [2018-11-28 11:25:35,284 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:35,284 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:35,285 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:35,285 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:35,285 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:35,286 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:35,286 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:35,289 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:25:35,292 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:25:35,292 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:25:35,294 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:25:35,294 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:25:35,294 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:25:35,295 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 11:25:35,296 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:25:35,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:35,342 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:35,353 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:35,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:35,397 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:35,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-28 11:25:35,426 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2018-11-28 11:25:35,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:35,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:35,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-28 11:25:35,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 11:25:35,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 11:25:35,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,429 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 11:25:35,429 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,430 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-28 11:25:35,431 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:35,434 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 11:25:35,434 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 11:25:35,435 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 11:25:35,435 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 11:25:35,435 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:25:35,435 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:25:35,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 11:25:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-28 11:25:35,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 11:25:35,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 11:25:35,452 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:25:35,452 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 11:25:35,452 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 11:25:35,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 11:25:35,453 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:35,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:25:35,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:25:35,453 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 11:25:35,453 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 11:25:35,453 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2018-11-28 11:25:35,453 INFO L796 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2018-11-28 11:25:35,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,454 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-28 11:25:35,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:35,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-28 11:25:35,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:35,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-11-28 11:25:35,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:25:35,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,490 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:35,490 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:35,490 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:35,490 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:35,490 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:25:35,490 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,491 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:35,491 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:35,491 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 11:25:35,491 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:35,491 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:35,492 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,506 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,509 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,511 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:35,564 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,566 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,580 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,580 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,583 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,583 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,599 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:25:35,599 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,615 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:25:35,615 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:35,616 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:35,616 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:35,616 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:35,616 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:25:35,616 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,616 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:35,616 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:35,616 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 11:25:35,616 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:35,616 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:35,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,623 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,626 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,657 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:35,657 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:25:35,657 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 [2018-11-28 11:25:35,658 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:35,658 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:35,658 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:35,658 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:35,660 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:35,660 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:35,663 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:35,664 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 [2018-11-28 11:25:35,664 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:35,665 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:35,665 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:35,665 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:35,665 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:35,665 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:35,666 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:35,668 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:25:35,671 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:25:35,671 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:25:35,672 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:25:35,672 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:25:35,672 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:25:35,672 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 11:25:35,672 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:25:35,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:35,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:35,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:35,711 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:35,711 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 11:25:35,724 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-11-28 11:25:35,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:35,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:35,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 11:25:35,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 11:25:35,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 11:25:35,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,727 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-28 11:25:35,727 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:35,727 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-11-28 11:25:35,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:35,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 11:25:35,728 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 11:25:35,728 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 11:25:35,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-28 11:25:35,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:25:35,731 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 11:25:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-28 11:25:35,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-28 11:25:35,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 11:25:35,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-11-28 11:25:35,735 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 11:25:35,735 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 11:25:35,735 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 11:25:35,735 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2018-11-28 11:25:35,735 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 11:25:35,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:25:35,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:25:35,736 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-28 11:25:35,736 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 11:25:35,736 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2018-11-28 11:25:35,736 INFO L796 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2018-11-28 11:25:35,736 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,737 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2018-11-28 11:25:35,737 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:35,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-11-28 11:25:35,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,748 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:25:35,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:35,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2018-11-28 11:25:35,752 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:35,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:35,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,753 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:25:35,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:35,802 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:35,802 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:35,802 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:35,802 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:35,802 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:25:35,802 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,802 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:35,802 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:35,802 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 11:25:35,803 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:35,803 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:35,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,806 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,808 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,809 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,811 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,843 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:35,843 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,861 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,861 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,864 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,864 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,888 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,912 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,912 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,932 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,932 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,937 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,937 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,952 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:35,953 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,955 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:35,955 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:35,973 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:25:35,973 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:35,989 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:25:35,990 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:35,990 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:35,990 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:35,990 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:35,990 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:25:35,990 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:35,991 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:35,991 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:35,991 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 11:25:35,991 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:35,991 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:35,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:35,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,042 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:36,043 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:25:36,043 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 [2018-11-28 11:25:36,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,044 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:36,044 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,044 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 11:25:36,044 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,045 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 11:25:36,045 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:36,047 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,047 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 [2018-11-28 11:25:36,048 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,048 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,048 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,048 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,049 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:36,049 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:36,053 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,054 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 [2018-11-28 11:25:36,054 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,054 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:36,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,055 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,055 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:36,055 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:36,056 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,056 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 [2018-11-28 11:25:36,057 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,057 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,057 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,057 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,058 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:36,058 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:36,060 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,061 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 [2018-11-28 11:25:36,061 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,061 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:36,061 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,061 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,062 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,062 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:36,062 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:36,064 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:25:36,066 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:25:36,066 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:25:36,067 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:25:36,067 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:25:36,067 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:25:36,067 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 11:25:36,067 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:25:36,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,097 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:36,109 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:36,109 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-28 11:25:36,118 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-28 11:25:36,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:36,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:36,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 11:25:36,119 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 11:25:36,119 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,120 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 11:25:36,128 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:36,142 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:36,142 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-28 11:25:36,157 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-28 11:25:36,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:36,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:36,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 11:25:36,159 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 11:25:36,159 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,159 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 11:25:36,170 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:36,188 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:36,189 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-28 11:25:36,199 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2018-11-28 11:25:36,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:36,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-28 11:25:36,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 11:25:36,200 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,200 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 11:25:36,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,201 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 11:25:36,201 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,201 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2018-11-28 11:25:36,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 11:25:36,202 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-11-28 11:25:36,202 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 11:25:36,202 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 11:25:36,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-28 11:25:36,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:25:36,203 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-28 11:25:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-28 11:25:36,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2018-11-28 11:25:36,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 11:25:36,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-11-28 11:25:36,204 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-28 11:25:36,204 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-28 11:25:36,204 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 11:25:36,204 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2018-11-28 11:25:36,204 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 11:25:36,204 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:25:36,207 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:25:36,207 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 11:25:36,207 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 11:25:36,207 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L19-2 [2018-11-28 11:25:36,208 INFO L796 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2018-11-28 11:25:36,208 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,208 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-28 11:25:36,208 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:36,208 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:36,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,209 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:25:36,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,212 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2018-11-28 11:25:36,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:36,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:36,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,214 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 11:25:36,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,217 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,217 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2018-11-28 11:25:36,217 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:25:36,217 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:25:36,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,218 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:25:36,218 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:25:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:25:36,254 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:36,254 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:36,254 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:36,254 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:36,254 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:25:36,255 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:36,255 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:36,255 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:36,255 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 11:25:36,255 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:36,255 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:36,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,263 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,265 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,297 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:36,297 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:36,305 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:36,305 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:36,307 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:36,308 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:36,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:36,330 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:36,344 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:25:36,345 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:36,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:25:36,347 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_72eccfe4-39df-4c52-a553-4188383e1b53/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 [2018-11-28 11:25:36,363 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:25:36,364 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:25:36,379 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:25:36,380 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:25:36,380 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:25:36,380 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:25:36,380 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:25:36,380 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:25:36,380 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:25:36,380 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:25:36,380 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:25:36,381 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 11:25:36,381 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:25:36,381 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:25:36,382 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,386 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,389 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,391 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:25:36,424 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:25:36,425 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:25:36,425 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 [2018-11-28 11:25:36,425 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,425 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:36,425 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,425 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,426 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,426 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:36,426 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:36,426 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,427 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 [2018-11-28 11:25:36,427 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,427 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,427 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,427 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,428 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 11:25:36,428 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 11:25:36,431 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:25:36,431 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 [2018-11-28 11:25:36,432 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:25:36,432 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:25:36,432 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:25:36,432 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:25:36,432 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:25:36,433 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:25:36,433 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:25:36,435 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:25:36,436 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:25:36,436 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 11:25:36,437 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:25:36,437 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:25:36,437 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:25:36,437 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 11:25:36,437 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:25:36,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:25:36,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:25:36,449 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:25:36,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:25:36,459 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:25:36,459 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 11:25:36,464 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2018-11-28 11:25:36,464 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:25:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:25:36,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 11:25:36,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 11:25:36,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 11:25:36,465 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,465 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 11:25:36,466 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:25:36,466 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2018-11-28 11:25:36,466 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:25:36,466 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:25:36,467 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:25:36,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:25:36,467 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 11:25:36,467 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:25:36,467 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:25:36,467 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 11:25:36,472 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:25:36 BoogieIcfgContainer [2018-11-28 11:25:36,472 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 11:25:36,472 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:25:36,472 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:25:36,472 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:25:36,473 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:25:34" (3/4) ... [2018-11-28 11:25:36,475 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:25:36,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:25:36,476 INFO L168 Benchmark]: Toolchain (without parser) took 2044.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 953.3 MB in the beginning and 1.1 GB in the end (delta: -132.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:36,477 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:36,477 INFO L168 Benchmark]: CACSL2BoogieTranslator took 140.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:36,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:36,477 INFO L168 Benchmark]: Boogie Preprocessor took 11.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:36,478 INFO L168 Benchmark]: RCFGBuilder took 148.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:36,478 INFO L168 Benchmark]: BuchiAutomizer took 1718.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:25:36,479 INFO L168 Benchmark]: Witness Printer took 3.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:25:36,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 140.42 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.35 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.68 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 148.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.8 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -174.8 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1718.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.6 MB). Peak memory consumption was 28.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.17 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. 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 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.6s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 13ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...