./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.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_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 10:48:33,877 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 10:48:33,878 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 10:48:33,885 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 10:48:33,886 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 10:48:33,886 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 10:48:33,887 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 10:48:33,888 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 10:48:33,889 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 10:48:33,890 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 10:48:33,890 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 10:48:33,891 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 10:48:33,891 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 10:48:33,892 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 10:48:33,893 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 10:48:33,893 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 10:48:33,894 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 10:48:33,895 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 10:48:33,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 10:48:33,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 10:48:33,898 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 10:48:33,899 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 10:48:33,900 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 10:48:33,901 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 10:48:33,901 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 10:48:33,901 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 10:48:33,902 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 10:48:33,903 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 10:48:33,903 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 10:48:33,904 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 10:48:33,904 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 10:48:33,904 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 10:48:33,905 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 10:48:33,905 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 10:48:33,905 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 10:48:33,906 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 10:48:33,906 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 10:48:33,917 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 10:48:33,917 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 10:48:33,918 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 10:48:33,918 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 10:48:33,918 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 10:48:33,918 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 10:48:33,919 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 10:48:33,919 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 10:48:33,920 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 10:48:33,921 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 10:48:33,921 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 10:48:33,921 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 10:48:33,921 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 10:48:33,921 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 10:48:33,921 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 10:48:33,922 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 10:48:33,922 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 10:48:33,922 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_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 -> 054e86c0b11592f66f6efc3e0f84c6f8bee49b59 [2018-11-28 10:48:33,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 10:48:33,953 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 10:48:33,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 10:48:33,956 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 10:48:33,956 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 10:48:33,957 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 10:48:33,992 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/data/443a3ec28/559b8c525c064583b053867987fb5bc9/FLAG88901702e [2018-11-28 10:48:34,383 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 10:48:34,383 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/sv-benchmarks/c/termination-crafted/Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 10:48:34,388 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/data/443a3ec28/559b8c525c064583b053867987fb5bc9/FLAG88901702e [2018-11-28 10:48:34,398 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/bin-2019/uautomizer/data/443a3ec28/559b8c525c064583b053867987fb5bc9 [2018-11-28 10:48:34,401 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 10:48:34,402 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 10:48:34,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 10:48:34,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 10:48:34,406 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 10:48:34,406 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bce3877 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34, skipping insertion in model container [2018-11-28 10:48:34,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 10:48:34,422 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 10:48:34,517 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:48:34,519 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 10:48:34,528 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 10:48:34,537 INFO L195 MainTranslator]: Completed translation [2018-11-28 10:48:34,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34 WrapperNode [2018-11-28 10:48:34,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 10:48:34,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 10:48:34,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 10:48:34,538 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 10:48:34,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,547 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 10:48:34,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 10:48:34,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 10:48:34,560 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 10:48:34,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,566 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,605 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... [2018-11-28 10:48:34,606 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 10:48:34,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 10:48:34,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 10:48:34,606 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 10:48:34,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 10:48:34,645 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 10:48:34,722 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 10:48:34,722 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 10:48:34,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:48:34 BoogieIcfgContainer [2018-11-28 10:48:34,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 10:48:34,723 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 10:48:34,723 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 10:48:34,725 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 10:48:34,726 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:48:34,726 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 10:48:34" (1/3) ... [2018-11-28 10:48:34,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32939589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 10:48:34, skipping insertion in model container [2018-11-28 10:48:34,728 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:48:34,728 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 10:48:34" (2/3) ... [2018-11-28 10:48:34,728 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32939589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 10:48:34, skipping insertion in model container [2018-11-28 10:48:34,729 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 10:48:34,729 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:48:34" (3/3) ... [2018-11-28 10:48:34,730 INFO L375 chiAutomizerObserver]: Analyzing ICFG Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 10:48:34,767 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 10:48:34,767 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 10:48:34,767 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 10:48:34,768 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 10:48:34,768 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 10:48:34,768 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 10:48:34,768 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 10:48:34,768 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 10:48:34,768 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 10:48:34,776 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 10:48:34,788 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:34,788 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:48:34,788 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:48:34,792 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 10:48:34,792 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:48:34,793 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 10:48:34,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-28 10:48:34,793 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:34,793 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:48:34,794 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:48:34,794 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 10:48:34,794 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:48:34,800 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L21-2true [2018-11-28 10:48:34,800 INFO L796 eck$LassoCheckResult]: Loop: 8#L21-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 4#L21true assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 8#L21-2true [2018-11-28 10:48:34,805 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 10:48:34,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:34,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:34,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:34,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:34,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-28 10:48:34,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:34,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:34,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,871 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:34,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,882 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:34,883 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-28 10:48:34,883 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:34,883 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:34,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:34,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:34,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:34,951 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:34,951 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:34,951 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:34,952 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:34,952 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:48:34,952 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:34,952 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:34,952 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:34,952 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 10:48:34,952 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:34,953 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:34,975 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 10:48:34,985 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 10:48:34,991 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 10:48:35,000 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 10:48:35,083 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,084 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,099 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,099 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,117 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,117 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_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,120 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,120 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,134 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,135 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_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,137 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,140 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,140 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_~y~0=0, ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,154 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,154 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:48:35,171 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,191 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:48:35,192 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:35,192 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:35,192 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:35,192 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:35,192 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:48:35,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:35,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:35,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:35,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-28 10:48:35,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:35,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:35,194 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 10:48:35,200 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 10:48:35,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 10:48:35,219 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 10:48:35,287 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,290 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:48:35,291 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 10:48:35,292 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,293 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,293 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,293 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,295 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:48:35,295 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:48:35,301 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,301 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 10:48:35,302 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,302 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,302 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,302 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,304 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:48:35,304 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:48:35,310 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,311 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 10:48:35,311 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,311 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:48:35,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,313 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 10:48:35,313 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:48:35,315 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,315 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 10:48:35,316 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,316 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:48:35,316 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,316 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,316 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,317 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 10:48:35,317 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:48:35,320 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:48:35,323 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 10:48:35,324 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 10:48:35,325 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:48:35,325 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 10:48:35,326 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:48:35,326 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 10:48:35,328 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 10:48:35,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,365 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,374 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,390 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 10:48:35,400 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 10:48:35,401 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-28 10:48:35,442 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 7 states. [2018-11-28 10:48:35,442 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 10:48:35,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:48:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-28 10:48:35,445 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-28 10:48:35,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 10:48:35,446 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,446 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-28 10:48:35,447 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,447 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-28 10:48:35,449 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:35,452 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-11-28 10:48:35,453 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 10:48:35,453 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 10:48:35,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-28 10:48:35,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 10:48:35,454 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 10:48:35,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-28 10:48:35,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-28 10:48:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 10:48:35,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-28 10:48:35,470 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 10:48:35,470 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 10:48:35,470 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 10:48:35,470 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-28 10:48:35,470 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:35,470 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:48:35,470 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:48:35,471 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 10:48:35,471 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:48:35,471 INFO L794 eck$LassoCheckResult]: Stem: 76#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 77#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 71#L21 [2018-11-28 10:48:35,471 INFO L796 eck$LassoCheckResult]: Loop: 71#L21 assume !(main_~y~0 < 0); 72#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 71#L21 [2018-11-28 10:48:35,471 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 10:48:35,471 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,471 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,473 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:35,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,479 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 1 times [2018-11-28 10:48:35,479 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,479 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,480 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:35,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,484 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,484 INFO L82 PathProgramCache]: Analyzing trace with hash 963397, now seen corresponding path program 1 times [2018-11-28 10:48:35,484 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,484 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,485 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:35,485 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,508 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:35,508 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:35,508 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:35,509 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:35,509 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:48:35,509 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:35,509 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:35,509 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:35,509 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 10:48:35,509 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:35,509 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:35,510 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 10:48:35,516 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 10:48:35,518 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 10:48:35,523 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 10:48:35,547 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,547 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,549 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,567 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,568 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_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,572 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,572 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,587 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,587 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,590 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,590 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,605 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 10:48:35,605 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,607 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,624 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:48:35,624 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,640 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:48:35,641 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:35,641 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:35,642 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:35,642 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:35,642 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:48:35,642 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:35,642 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:35,642 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:35,642 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-28 10:48:35,642 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:35,642 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:35,643 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 10:48:35,650 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 10:48:35,656 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 10:48:35,659 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 10:48:35,707 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,707 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:48:35,708 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 10:48:35,708 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,709 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,709 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,709 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,711 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:48:35,714 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:48:35,717 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,718 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 10:48:35,718 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,718 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,719 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,723 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,724 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 10:48:35,724 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 10:48:35,728 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,729 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 10:48:35,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,729 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:48:35,730 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,730 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,730 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,730 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 10:48:35,730 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:48:35,731 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 10:48:35,731 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 10:48:35,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,732 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:48:35,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,732 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,732 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,733 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 10:48:35,733 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:48:35,736 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:48:35,738 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 10:48:35,738 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 10:48:35,738 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:48:35,738 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 10:48:35,739 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:48:35,739 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-28 10:48:35,739 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 10:48:35,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,779 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 10:48:35,780 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 10:48:35,780 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 10:48:35,815 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 14 states and 19 transitions. Complement of second has 5 states. [2018-11-28 10:48:35,816 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 10:48:35,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:48:35,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-28 10:48:35,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 10:48:35,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 10:48:35,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 10:48:35,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:35,817 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 19 transitions. [2018-11-28 10:48:35,817 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:35,818 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 9 states and 12 transitions. [2018-11-28 10:48:35,818 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 10:48:35,818 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 10:48:35,818 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2018-11-28 10:48:35,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 10:48:35,818 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2018-11-28 10:48:35,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2018-11-28 10:48:35,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 7. [2018-11-28 10:48:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-28 10:48:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-28 10:48:35,819 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 10:48:35,819 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-28 10:48:35,819 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 10:48:35,819 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-28 10:48:35,819 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 10:48:35,819 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 10:48:35,819 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 10:48:35,820 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-11-28 10:48:35,820 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 10:48:35,820 INFO L794 eck$LassoCheckResult]: Stem: 130#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 131#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 127#L21 assume main_~y~0 < 0;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet2;havoc main_#t~nondet2; 128#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 125#L21 [2018-11-28 10:48:35,820 INFO L796 eck$LassoCheckResult]: Loop: 125#L21 assume !(main_~y~0 < 0); 126#L21-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0);main_~y~0 := main_~y~0 - 1; 125#L21 [2018-11-28 10:48:35,820 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,820 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-11-28 10:48:35,820 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,820 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,821 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 10:48:35,821 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-11-28 10:48:35,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:48:35,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,831 INFO L82 PathProgramCache]: Analyzing trace with hash 925765410, now seen corresponding path program 1 times [2018-11-28 10:48:35,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 10:48:35,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 10:48:35,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,832 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 10:48:35,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 10:48:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 10:48:35,855 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:35,855 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:35,855 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:35,855 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:35,855 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 10:48:35,855 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:35,855 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:35,855 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:35,856 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 10:48:35,856 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:35,856 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:35,857 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 10:48:35,862 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 10:48:35,864 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 10:48:35,865 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 10:48:35,891 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,891 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,893 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 10:48:35,893 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_eea41ba1-9f5c-470a-98d0-4a99a6211e8a/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 10:48:35,909 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 10:48:35,909 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 10:48:35,924 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 10:48:35,925 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 10:48:35,925 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 10:48:35,926 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 10:48:35,926 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 10:48:35,926 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 10:48:35,926 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 10:48:35,926 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 10:48:35,926 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 10:48:35,926 INFO L131 ssoRankerPreferences]: Filename of dumped script: Nyala-2lex_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-28 10:48:35,926 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 10:48:35,926 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 10:48:35,927 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 10:48:35,931 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 10:48:35,933 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 10:48:35,935 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 10:48:35,959 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 10:48:35,959 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 10:48:35,960 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 10:48:35,960 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 10:48:35,960 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 10:48:35,960 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 10:48:35,960 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 10:48:35,960 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 10:48:35,961 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 10:48:35,961 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 10:48:35,963 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 10:48:35,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 10:48:35,965 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 10:48:35,965 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 10:48:35,965 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 10:48:35,965 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 10:48:35,965 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2018-11-28 10:48:35,966 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 10:48:35,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:35,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:35,987 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:35,996 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 10:48:35,996 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 10:48:35,996 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 10:48:36,003 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-11-28 10:48:36,004 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 10:48:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:48:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-28 10:48:36,004 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 10:48:36,004 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:36,005 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 10:48:36,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:36,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:36,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:36,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:36,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:36,035 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 10:48:36,036 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 10:48:36,036 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 10:48:36,042 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 5 states. [2018-11-28 10:48:36,042 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 10:48:36,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:48:36,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-28 10:48:36,042 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 10:48:36,042 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:36,042 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 10:48:36,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 10:48:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:36,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 10:48:36,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 10:48:36,072 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 10:48:36,072 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 10:48:36,073 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 10:48:36,080 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 4. Second operand 3 states. Result 10 states and 13 transitions. Complement of second has 4 states. [2018-11-28 10:48:36,081 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 10:48:36,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 10:48:36,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-28 10:48:36,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 10:48:36,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:36,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 10:48:36,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:36,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 10:48:36,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 10:48:36,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 13 transitions. [2018-11-28 10:48:36,083 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 10:48:36,083 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 0 states and 0 transitions. [2018-11-28 10:48:36,083 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 10:48:36,083 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 10:48:36,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 10:48:36,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 10:48:36,084 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:48:36,084 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:48:36,084 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 10:48:36,084 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 10:48:36,084 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 10:48:36,084 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 10:48:36,084 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 10:48:36,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 10:48:36 BoogieIcfgContainer [2018-11-28 10:48:36,089 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 10:48:36,089 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 10:48:36,089 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 10:48:36,089 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 10:48:36,090 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 10:48:34" (3/4) ... [2018-11-28 10:48:36,092 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 10:48:36,092 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 10:48:36,092 INFO L168 Benchmark]: Toolchain (without parser) took 1690.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 953.3 MB in the beginning and 907.6 MB in the end (delta: 45.7 MB). Peak memory consumption was 174.2 MB. Max. memory is 11.5 GB. [2018-11-28 10:48:36,093 INFO L168 Benchmark]: CDTParser took 0.11 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 10:48:36,093 INFO L168 Benchmark]: CACSL2BoogieTranslator took 134.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2018-11-28 10:48:36,094 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.93 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:48:36,094 INFO L168 Benchmark]: Boogie Preprocessor took 46.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-11-28 10:48:36,095 INFO L168 Benchmark]: RCFGBuilder took 116.86 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. [2018-11-28 10:48:36,095 INFO L168 Benchmark]: BuchiAutomizer took 1365.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.6 MB in the end (delta: 209.9 MB). Peak memory consumption was 209.9 MB. Max. memory is 11.5 GB. [2018-11-28 10:48:36,095 INFO L168 Benchmark]: Witness Printer took 2.62 ms. Allocated memory is still 1.2 GB. Free memory is still 907.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 10:48:36,097 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 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 134.55 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 945.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 21.93 ms. Allocated memory is still 1.0 GB. Free memory is still 942.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 46.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 128.5 MB). Free memory was 942.5 MB in the beginning and 1.1 GB in the end (delta: -186.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 116.86 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: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1365.86 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 907.6 MB in the end (delta: 209.9 MB). Peak memory consumption was 209.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.62 ms. Allocated memory is still 1.2 GB. Free memory is still 907.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function 2 * y + 1 and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 0.9s. 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 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 7 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 18 SDslu, 10 SDs, 0 SdLazy, 36 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax178 hnf97 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq155 hnf93 smp100 dnf100 smp100 tf113 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 10ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...