./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash edcc597a46f9ad79563531282ca675b8b1d7c4bf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 12:12:07,845 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 12:12:07,847 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 12:12:07,854 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 12:12:07,854 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 12:12:07,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 12:12:07,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 12:12:07,857 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 12:12:07,858 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 12:12:07,859 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 12:12:07,860 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 12:12:07,860 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 12:12:07,860 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 12:12:07,861 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 12:12:07,862 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 12:12:07,862 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 12:12:07,863 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 12:12:07,864 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 12:12:07,866 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 12:12:07,867 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 12:12:07,867 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 12:12:07,868 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 12:12:07,870 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 12:12:07,870 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 12:12:07,870 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 12:12:07,871 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 12:12:07,872 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 12:12:07,872 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 12:12:07,873 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 12:12:07,874 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 12:12:07,874 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 12:12:07,875 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 12:12:07,875 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 12:12:07,875 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 12:12:07,875 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 12:12:07,876 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 12:12:07,876 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 12:12:07,887 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 12:12:07,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 12:12:07,888 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 12:12:07,889 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 12:12:07,889 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 12:12:07,890 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 12:12:07,890 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 12:12:07,891 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 12:12:07,891 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 12:12:07,891 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 12:12:07,892 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 12:12:07,892 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 12:12:07,892 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_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> edcc597a46f9ad79563531282ca675b8b1d7c4bf [2018-11-28 12:12:07,917 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 12:12:07,923 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 12:12:07,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 12:12:07,926 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 12:12:07,926 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 12:12:07,927 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/../../sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 12:12:07,966 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/data/766dd16b8/7622bfcef94a4c2aaa913eb72ba4e91c/FLAGf0d0bc4a9 [2018-11-28 12:12:08,384 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 12:12:08,384 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/sv-benchmarks/c/recursive/McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 12:12:08,389 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/data/766dd16b8/7622bfcef94a4c2aaa913eb72ba4e91c/FLAGf0d0bc4a9 [2018-11-28 12:12:08,401 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/data/766dd16b8/7622bfcef94a4c2aaa913eb72ba4e91c [2018-11-28 12:12:08,404 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 12:12:08,405 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 12:12:08,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 12:12:08,406 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 12:12:08,409 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 12:12:08,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473ab53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08, skipping insertion in model container [2018-11-28 12:12:08,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,418 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 12:12:08,429 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 12:12:08,532 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:12:08,534 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 12:12:08,544 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 12:12:08,552 INFO L195 MainTranslator]: Completed translation [2018-11-28 12:12:08,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08 WrapperNode [2018-11-28 12:12:08,553 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 12:12:08,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 12:12:08,554 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 12:12:08,554 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 12:12:08,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 12:12:08,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 12:12:08,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 12:12:08,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 12:12:08,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... [2018-11-28 12:12:08,583 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 12:12:08,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 12:12:08,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 12:12:08,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 12:12:08,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:08,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 12:12:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 12:12:08,654 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2018-11-28 12:12:08,654 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2018-11-28 12:12:08,736 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 12:12:08,736 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 12:12:08,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:12:08 BoogieIcfgContainer [2018-11-28 12:12:08,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 12:12:08,737 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 12:12:08,737 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 12:12:08,739 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 12:12:08,740 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:12:08,740 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 12:12:08" (1/3) ... [2018-11-28 12:12:08,741 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bf36755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:12:08, skipping insertion in model container [2018-11-28 12:12:08,741 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:12:08,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 12:12:08" (2/3) ... [2018-11-28 12:12:08,741 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5bf36755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 12:12:08, skipping insertion in model container [2018-11-28 12:12:08,741 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 12:12:08,741 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:12:08" (3/3) ... [2018-11-28 12:12:08,743 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_true-unreach-call_true-no-overflow_true-termination.c [2018-11-28 12:12:08,780 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 12:12:08,781 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 12:12:08,781 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 12:12:08,781 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 12:12:08,781 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 12:12:08,781 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 12:12:08,781 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 12:12:08,781 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 12:12:08,781 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 12:12:08,791 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 12:12:08,806 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 12:12:08,806 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:08,806 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:08,811 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:12:08,811 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:12:08,811 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 12:12:08,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states. [2018-11-28 12:12:08,812 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 12:12:08,813 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:08,813 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:08,813 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 12:12:08,813 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:12:08,818 INFO L794 eck$LassoCheckResult]: Stem: 12#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 3#L26true call main_#t~ret3 := f91(main_~x~0);< 16#f91ENTRYtrue [2018-11-28 12:12:08,818 INFO L796 eck$LassoCheckResult]: Loop: 16#f91ENTRYtrue ~x := #in~x; 10#L16true assume !(~x > 100); 7#L19true call #t~ret0 := f91(11 + ~x);< 16#f91ENTRYtrue [2018-11-28 12:12:08,821 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:08,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1015, now seen corresponding path program 1 times [2018-11-28 12:12:08,823 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:08,823 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:08,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:08,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:08,885 INFO L82 PathProgramCache]: Analyzing trace with hash 43828, now seen corresponding path program 1 times [2018-11-28 12:12:08,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:08,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:08,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,886 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:08,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:08,897 INFO L82 PathProgramCache]: Analyzing trace with hash 30251902, now seen corresponding path program 1 times [2018-11-28 12:12:08,898 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:08,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:08,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:08,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:08,974 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:08,975 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:08,975 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:08,975 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:08,975 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:12:08,975 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:08,975 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:08,976 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:08,976 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-28 12:12:08,976 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:08,976 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:08,989 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 12:12:08,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,002 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 12:12:09,009 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 12:12:09,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,047 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:09,047 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:09,051 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:09,061 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:09,061 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,077 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:09,077 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:09,079 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:09,079 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,095 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:09,095 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:12:09,112 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:09,128 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:12:09,129 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:09,130 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:09,130 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:09,130 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:09,130 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:12:09,130 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:09,130 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:09,130 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:09,130 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration1_Loop [2018-11-28 12:12:09,130 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:09,130 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:09,131 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 12:12:09,133 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 12:12:09,135 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 12:12:09,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,197 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:09,200 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:12:09,201 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 12:12:09,202 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:09,203 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:09,203 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:09,203 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:09,203 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:09,205 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:09,205 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:09,208 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:09,208 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:12:09,209 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:09,209 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:09,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:09,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:09,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:09,209 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:09,209 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:09,211 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:09,211 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 12:12:09,211 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:09,212 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:09,212 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:09,212 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:09,212 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:09,213 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:09,213 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:09,219 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:12:09,222 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:12:09,222 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:12:09,223 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:12:09,223 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:12:09,223 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:12:09,224 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -2*f91_#in~x + 211 Supporting invariants [] [2018-11-28 12:12:09,224 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:12:09,245 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:09,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:09,259 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:09,272 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:09,323 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 12:12:09,332 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 12:12:09,333 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states. Second operand 4 states. [2018-11-28 12:12:09,408 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states.. Second operand 4 states. Result 33 states and 41 transitions. Complement of second has 12 states. [2018-11-28 12:12:09,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 12:12:09,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 12:12:09,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 12:12:09,412 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:09,412 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 12:12:09,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:09,413 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 12:12:09,413 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:09,415 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 41 transitions. [2018-11-28 12:12:09,417 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 12:12:09,423 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 18 states and 24 transitions. [2018-11-28 12:12:09,424 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 12:12:09,424 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 13 [2018-11-28 12:12:09,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 24 transitions. [2018-11-28 12:12:09,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:09,426 INFO L705 BuchiCegarLoop]: Abstraction has 18 states and 24 transitions. [2018-11-28 12:12:09,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 24 transitions. [2018-11-28 12:12:09,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2018-11-28 12:12:09,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 12:12:09,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2018-11-28 12:12:09,451 INFO L728 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-28 12:12:09,451 INFO L608 BuchiCegarLoop]: Abstraction has 16 states and 20 transitions. [2018-11-28 12:12:09,451 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 12:12:09,451 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 20 transitions. [2018-11-28 12:12:09,451 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 12:12:09,452 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:09,452 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:09,452 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:12:09,452 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:12:09,452 INFO L794 eck$LassoCheckResult]: Stem: 105#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 99#L26 call main_#t~ret3 := f91(main_~x~0);< 104#f91ENTRY ~x := #in~x; 109#L16 assume !(~x > 100); 100#L19 call #t~ret0 := f91(11 + ~x);< 107#f91ENTRY ~x := #in~x; 110#L16 assume ~x > 100;#res := ~x - 10; 112#f91FINAL assume true; 111#f91EXIT >#26#return; 101#L19-1 [2018-11-28 12:12:09,453 INFO L796 eck$LassoCheckResult]: Loop: 101#L19-1 call #t~ret1 := f91(#t~ret0);< 106#f91ENTRY ~x := #in~x; 113#L16 assume !(~x > 100); 102#L19 call #t~ret0 := f91(11 + ~x);< 106#f91ENTRY ~x := #in~x; 113#L16 assume ~x > 100;#res := ~x - 10; 103#f91FINAL assume true; 108#f91EXIT >#26#return; 101#L19-1 [2018-11-28 12:12:09,453 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:09,453 INFO L82 PathProgramCache]: Analyzing trace with hash -495039419, now seen corresponding path program 1 times [2018-11-28 12:12:09,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:09,453 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:09,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,454 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:09,454 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,461 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:09,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 1 times [2018-11-28 12:12:09,461 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:09,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,462 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:09,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:09,468 INFO L82 PathProgramCache]: Analyzing trace with hash -984000794, now seen corresponding path program 1 times [2018-11-28 12:12:09,468 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:09,468 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:09,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:09,469 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:09,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:09,555 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:09,555 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:09,556 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:09,556 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:09,556 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:12:09,556 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:09,556 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:09,556 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:09,556 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-28 12:12:09,556 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:09,556 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:09,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:09,568 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 12:12:09,596 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:09,596 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,598 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:09,598 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:09,620 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:12:09,620 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:21,655 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 12:12:21,659 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:21,659 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:21,659 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:21,659 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:21,659 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:12:21,659 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:21,659 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:21,659 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:21,660 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration2_Loop [2018-11-28 12:12:21,660 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:21,660 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:21,661 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 12:12:21,667 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 12:12:21,669 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 12:12:21,717 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:21,718 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:12:21,718 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 12:12:21,719 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:21,719 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:21,719 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:21,719 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:21,720 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:21,720 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:21,720 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:21,726 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:12:21,731 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:12:21,731 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:12:21,732 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:12:21,732 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:12:21,732 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:12:21,732 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-28 12:12:21,732 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:12:21,741 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:21,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:21,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:21,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:21,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:12:21,863 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-28 12:12:21,864 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6 Second operand 9 states. [2018-11-28 12:12:22,019 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 20 transitions. cyclomatic complexity: 6. Second operand 9 states. Result 50 states and 72 transitions. Complement of second has 32 states. [2018-11-28 12:12:22,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 12:12:22,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-28 12:12:22,022 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 8 letters. [2018-11-28 12:12:22,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:22,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 17 letters. Loop has 8 letters. [2018-11-28 12:12:22,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:22,024 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 9 letters. Loop has 16 letters. [2018-11-28 12:12:22,024 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:22,025 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 72 transitions. [2018-11-28 12:12:22,028 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 12:12:22,030 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 41 states and 61 transitions. [2018-11-28 12:12:22,030 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-28 12:12:22,030 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 26 [2018-11-28 12:12:22,030 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 61 transitions. [2018-11-28 12:12:22,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:22,031 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 61 transitions. [2018-11-28 12:12:22,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 61 transitions. [2018-11-28 12:12:22,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2018-11-28 12:12:22,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 12:12:22,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2018-11-28 12:12:22,035 INFO L728 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-28 12:12:22,035 INFO L608 BuchiCegarLoop]: Abstraction has 35 states and 50 transitions. [2018-11-28 12:12:22,035 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 12:12:22,035 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 50 transitions. [2018-11-28 12:12:22,036 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 12:12:22,036 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:22,036 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:22,037 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 12:12:22,037 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 12:12:22,037 INFO L794 eck$LassoCheckResult]: Stem: 291#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 289#L26 call main_#t~ret3 := f91(main_~x~0);< 290#f91ENTRY ~x := #in~x; 312#L16 assume !(~x > 100); 281#L19 call #t~ret0 := f91(11 + ~x);< 297#f91ENTRY ~x := #in~x; 303#L16 assume ~x > 100;#res := ~x - 10; 310#f91FINAL assume true; 309#f91EXIT >#26#return; 285#L19-1 call #t~ret1 := f91(#t~ret0);< 294#f91ENTRY ~x := #in~x; 313#L16 assume !(~x > 100); 295#L19 [2018-11-28 12:12:22,037 INFO L796 eck$LassoCheckResult]: Loop: 295#L19 call #t~ret0 := f91(11 + ~x);< 296#f91ENTRY ~x := #in~x; 304#L16 assume !(~x > 100); 295#L19 [2018-11-28 12:12:22,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:22,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1198389434, now seen corresponding path program 2 times [2018-11-28 12:12:22,037 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:22,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:22,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:22,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:22,045 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:22,045 INFO L82 PathProgramCache]: Analyzing trace with hash 54268, now seen corresponding path program 2 times [2018-11-28 12:12:22,046 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:22,046 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:22,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,046 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:12:22,047 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:22,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:22,049 INFO L82 PathProgramCache]: Analyzing trace with hash 1451488419, now seen corresponding path program 3 times [2018-11-28 12:12:22,050 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:22,050 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:22,050 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,050 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:12:22,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:22,092 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 12:12:22,093 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 12:12:22,093 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-28 12:12:22,112 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:22,112 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:22,112 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:22,112 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:22,112 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:12:22,112 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:22,112 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:22,112 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:22,112 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-28 12:12:22,113 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:22,113 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:22,114 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 12:12:22,117 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 12:12:22,119 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 12:12:22,122 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 12:12:22,147 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:22,147 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:22,155 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:22,156 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:22,158 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:22,158 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:22,173 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:22,173 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:22,175 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:22,175 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:22,190 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:22,190 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:22,192 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:22,192 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:22,207 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:22,207 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/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 12:12:22,229 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:12:22,229 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:34,251 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 12:12:34,254 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:34,255 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:34,255 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:34,255 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:34,255 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:12:34,255 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:34,255 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:34,255 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:34,255 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration3_Loop [2018-11-28 12:12:34,255 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:34,255 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:34,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:34,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:34,259 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 12:12:34,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 12:12:34,297 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:34,298 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:12:34,298 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 12:12:34,299 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:34,300 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:34,301 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:34,301 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:34,301 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:34,301 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:34,301 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:34,302 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:34,303 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 12:12:34,303 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:34,303 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:34,303 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:34,303 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:34,303 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:34,304 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:34,304 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:34,304 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:34,305 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 12:12:34,305 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:34,305 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:34,305 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:34,305 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:34,306 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:34,306 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:34,306 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:34,307 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:34,307 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 12:12:34,307 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:34,308 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:34,308 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:34,308 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:34,308 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:34,308 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:34,309 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:34,313 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:12:34,316 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:12:34,316 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:12:34,316 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:12:34,317 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:12:34,317 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:12:34,317 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_~x) = -2*f91_~x + 189 Supporting invariants [] [2018-11-28 12:12:34,317 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:12:34,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,343 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,360 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,385 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 12:12:34,385 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 12:12:34,385 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-28 12:12:34,429 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-28 12:12:34,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:34,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:12:34,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-28 12:12:34,432 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 12:12:34,432 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:34,432 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:34,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,464 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,481 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 12:12:34,481 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 12:12:34,481 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-28 12:12:34,522 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 42 states and 58 transitions. Complement of second has 13 states. [2018-11-28 12:12:34,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:34,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:12:34,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 10 transitions. [2018-11-28 12:12:34,523 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 10 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 12:12:34,523 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:34,523 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:34,530 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,568 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 12:12:34,569 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 3 loop predicates [2018-11-28 12:12:34,569 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19 Second operand 5 states. [2018-11-28 12:12:34,612 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 50 transitions. cyclomatic complexity: 19. Second operand 5 states. Result 70 states and 99 transitions. Complement of second has 16 states. [2018-11-28 12:12:34,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 2 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 12:12:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 18 transitions. [2018-11-28 12:12:34,613 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 12:12:34,613 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:34,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 12:12:34,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:34,614 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 18 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 12:12:34,614 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:34,614 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 70 states and 99 transitions. [2018-11-28 12:12:34,616 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 12:12:34,617 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 70 states to 47 states and 73 transitions. [2018-11-28 12:12:34,618 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 25 [2018-11-28 12:12:34,618 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 27 [2018-11-28 12:12:34,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 73 transitions. [2018-11-28 12:12:34,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:34,618 INFO L705 BuchiCegarLoop]: Abstraction has 47 states and 73 transitions. [2018-11-28 12:12:34,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states and 73 transitions. [2018-11-28 12:12:34,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2018-11-28 12:12:34,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 12:12:34,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 59 transitions. [2018-11-28 12:12:34,621 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 59 transitions. [2018-11-28 12:12:34,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 12:12:34,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 12:12:34,624 INFO L87 Difference]: Start difference. First operand 41 states and 59 transitions. Second operand 8 states. [2018-11-28 12:12:34,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:12:34,686 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2018-11-28 12:12:34,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 12:12:34,687 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 81 transitions. [2018-11-28 12:12:34,688 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-28 12:12:34,689 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 57 states and 74 transitions. [2018-11-28 12:12:34,689 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 12:12:34,689 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-28 12:12:34,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 57 states and 74 transitions. [2018-11-28 12:12:34,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:34,690 INFO L705 BuchiCegarLoop]: Abstraction has 57 states and 74 transitions. [2018-11-28 12:12:34,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states and 74 transitions. [2018-11-28 12:12:34,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-28 12:12:34,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 12:12:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 73 transitions. [2018-11-28 12:12:34,693 INFO L728 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-28 12:12:34,693 INFO L608 BuchiCegarLoop]: Abstraction has 56 states and 73 transitions. [2018-11-28 12:12:34,694 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 12:12:34,694 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 56 states and 73 transitions. [2018-11-28 12:12:34,695 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 11 [2018-11-28 12:12:34,695 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:34,695 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:34,696 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2018-11-28 12:12:34,696 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 3, 2, 2, 2, 2, 2, 1, 1] [2018-11-28 12:12:34,696 INFO L794 eck$LassoCheckResult]: Stem: 814#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 812#L26 call main_#t~ret3 := f91(main_~x~0);< 813#f91ENTRY ~x := #in~x; 834#L16 assume !(~x > 100); 835#L19 call #t~ret0 := f91(11 + ~x);< 841#f91ENTRY ~x := #in~x; 844#L16 assume !(~x > 100); 839#L19 call #t~ret0 := f91(11 + ~x);< 842#f91ENTRY ~x := #in~x; 845#L16 assume ~x > 100;#res := ~x - 10; 843#f91FINAL assume true; 840#f91EXIT >#26#return; 810#L19-1 call #t~ret1 := f91(#t~ret0);< 817#f91ENTRY ~x := #in~x; 859#L16 assume ~x > 100;#res := ~x - 10; 858#f91FINAL assume true; 855#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 848#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-28 12:12:34,696 INFO L796 eck$LassoCheckResult]: Loop: 851#f91ENTRY ~x := #in~x; 846#L16 assume !(~x > 100); 821#L19 call #t~ret0 := f91(11 + ~x);< 822#f91ENTRY ~x := #in~x; 830#L16 assume !(~x > 100); 820#L19 call #t~ret0 := f91(11 + ~x);< 823#f91ENTRY ~x := #in~x; 829#L16 assume ~x > 100;#res := ~x - 10; 861#f91FINAL assume true; 831#f91EXIT >#26#return; 807#L19-1 call #t~ret1 := f91(#t~ret0);< 815#f91ENTRY ~x := #in~x; 850#L16 assume ~x > 100;#res := ~x - 10; 824#f91FINAL assume true; 825#f91EXIT >#28#return; 853#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 854#f91FINAL assume true; 852#f91EXIT >#26#return; 847#L19-1 call #t~ret1 := f91(#t~ret0);< 851#f91ENTRY [2018-11-28 12:12:34,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,696 INFO L82 PathProgramCache]: Analyzing trace with hash 803701992, now seen corresponding path program 1 times [2018-11-28 12:12:34,697 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:34,697 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:34,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,697 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:12:34,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:34,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:34,708 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1260361570, now seen corresponding path program 1 times [2018-11-28 12:12:34,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:34,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:34,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:34,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:34,721 INFO L82 PathProgramCache]: Analyzing trace with hash 187356247, now seen corresponding path program 2 times [2018-11-28 12:12:34,721 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:34,721 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:34,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 12:12:34,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:34,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:34,769 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-28 12:12:34,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:12:34,770 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:12:34,784 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 12:12:34,793 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 12:12:34,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:12:34,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:34,803 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-28 12:12:34,822 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 12:12:34,822 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 12:12:34,956 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:34,956 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:34,956 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:34,956 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:34,956 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:12:34,956 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:34,956 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:34,956 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:34,956 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-28 12:12:34,957 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:34,957 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:34,957 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 12:12:34,962 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 12:12:34,964 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 12:12:34,966 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 12:12:34,968 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 12:12:35,007 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:35,007 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,018 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:35,018 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:35,021 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:35,021 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,041 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:35,041 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:35,043 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:35,043 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_~x=0} Honda state: {f91_~x=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,068 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:35,068 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:35,071 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:35,071 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,095 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:35,096 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:35,098 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:35,098 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret0=0} Honda state: {f91_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,114 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:35,114 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,133 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:12:35,133 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:35,453 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 12:12:35,455 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:35,455 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:35,455 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:35,455 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:35,455 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:12:35,455 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:35,455 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:35,455 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:35,456 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration4_Loop [2018-11-28 12:12:35,456 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:35,456 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:35,456 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 12:12:35,458 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 12:12:35,458 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 12:12:35,459 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 12:12:35,460 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 12:12:35,477 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:35,478 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:12:35,478 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 12:12:35,478 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:35,479 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:35,479 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:35,479 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:35,479 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:35,479 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:35,479 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:35,481 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:35,481 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 12:12:35,482 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:35,482 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:35,482 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:35,482 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:35,482 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:35,482 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:35,482 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:35,482 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:35,483 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 12:12:35,483 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:35,483 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:35,483 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:35,483 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:35,483 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:35,484 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:35,484 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:35,484 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:35,484 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 12:12:35,484 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:35,485 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:35,485 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:35,485 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:35,485 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:35,485 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:35,485 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:35,486 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 12:12:35,486 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 12:12:35,486 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:35,486 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:35,486 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:35,487 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:35,487 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:35,487 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:35,487 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:35,489 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:12:35,491 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:12:35,491 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:12:35,491 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:12:35,491 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:12:35,491 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:12:35,491 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#in~x) = -1*f91_#in~x + 90 Supporting invariants [] [2018-11-28 12:12:35,492 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:12:35,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:35,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:35,537 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:35,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:35,684 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 12:12:35,685 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-28 12:12:35,685 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-28 12:12:35,949 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-28 12:12:35,950 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:35,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 12:12:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-28 12:12:35,950 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-28 12:12:35,951 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:35,951 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:35,957 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:35,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:35,973 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:36,014 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:36,091 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 12:12:36,092 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-28 12:12:36,092 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-28 12:12:36,325 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 124 states and 149 transitions. Complement of second has 47 states. [2018-11-28 12:12:36,325 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 14 states 2 stem states 11 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:36,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 12:12:36,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 33 transitions. [2018-11-28 12:12:36,326 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 14 states and 33 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-28 12:12:36,326 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:36,326 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:36,333 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:36,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:36,371 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:36,464 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-28 12:12:36,464 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 10 loop predicates [2018-11-28 12:12:36,464 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21 Second operand 12 states. [2018-11-28 12:12:36,940 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 56 states and 73 transitions. cyclomatic complexity: 21. Second operand 12 states. Result 430 states and 530 transitions. Complement of second has 216 states. [2018-11-28 12:12:36,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 20 states 2 stem states 17 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:36,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 12:12:36,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 48 transitions. [2018-11-28 12:12:36,941 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 19 letters. [2018-11-28 12:12:36,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:36,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 40 letters. Loop has 19 letters. [2018-11-28 12:12:36,942 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:36,942 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 20 states and 48 transitions. Stem has 21 letters. Loop has 38 letters. [2018-11-28 12:12:36,943 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:36,943 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 430 states and 530 transitions. [2018-11-28 12:12:36,952 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 29 [2018-11-28 12:12:36,956 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 430 states to 202 states and 268 transitions. [2018-11-28 12:12:36,956 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 94 [2018-11-28 12:12:36,957 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 105 [2018-11-28 12:12:36,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 202 states and 268 transitions. [2018-11-28 12:12:36,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:36,958 INFO L705 BuchiCegarLoop]: Abstraction has 202 states and 268 transitions. [2018-11-28 12:12:36,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states and 268 transitions. [2018-11-28 12:12:36,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 156. [2018-11-28 12:12:36,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2018-11-28 12:12:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 197 transitions. [2018-11-28 12:12:36,971 INFO L728 BuchiCegarLoop]: Abstraction has 156 states and 197 transitions. [2018-11-28 12:12:36,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:12:36,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:12:36,972 INFO L87 Difference]: Start difference. First operand 156 states and 197 transitions. Second operand 9 states. [2018-11-28 12:12:37,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:12:37,096 INFO L93 Difference]: Finished difference Result 158 states and 187 transitions. [2018-11-28 12:12:37,098 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 12:12:37,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 158 states and 187 transitions. [2018-11-28 12:12:37,100 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 12:12:37,101 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 158 states to 103 states and 122 transitions. [2018-11-28 12:12:37,102 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2018-11-28 12:12:37,102 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-28 12:12:37,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 103 states and 122 transitions. [2018-11-28 12:12:37,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 12:12:37,102 INFO L705 BuchiCegarLoop]: Abstraction has 103 states and 122 transitions. [2018-11-28 12:12:37,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states and 122 transitions. [2018-11-28 12:12:37,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2018-11-28 12:12:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-28 12:12:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2018-11-28 12:12:37,110 INFO L728 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-28 12:12:37,110 INFO L608 BuchiCegarLoop]: Abstraction has 99 states and 118 transitions. [2018-11-28 12:12:37,110 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 12:12:37,111 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 99 states and 118 transitions. [2018-11-28 12:12:37,111 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 12:12:37,112 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 12:12:37,112 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 12:12:37,114 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [7, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1] [2018-11-28 12:12:37,114 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1, 1, 1, 1, 1] [2018-11-28 12:12:37,114 INFO L794 eck$LassoCheckResult]: Stem: 2797#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~ret3, main_~x~0, main_~result~0;main_~x~0 := main_#t~nondet2;havoc main_#t~nondet2; 2789#L26 call main_#t~ret3 := f91(main_~x~0);< 2790#f91ENTRY ~x := #in~x; 2818#L16 assume !(~x > 100); 2814#L19 call #t~ret0 := f91(11 + ~x);< 2813#f91ENTRY ~x := #in~x; 2816#L16 assume !(~x > 100); 2815#L19 call #t~ret0 := f91(11 + ~x);< 2847#f91ENTRY ~x := #in~x; 2850#L16 assume ~x > 100;#res := ~x - 10; 2849#f91FINAL assume true; 2848#f91EXIT >#26#return; 2843#L19-1 call #t~ret1 := f91(#t~ret0);< 2845#f91ENTRY ~x := #in~x; 2865#L16 assume ~x > 100;#res := ~x - 10; 2851#f91FINAL assume true; 2842#f91EXIT >#28#return; 2841#L19-2 #res := #t~ret1;havoc #t~ret0;havoc #t~ret1; 2839#f91FINAL assume true; 2838#f91EXIT >#26#return; 2832#L19-1 call #t~ret1 := f91(#t~ret0);< 2837#f91ENTRY ~x := #in~x; 2835#L16 assume !(~x > 100); 2799#L19 call #t~ret0 := f91(11 + ~x);< 2807#f91ENTRY ~x := #in~x; 2840#L16 assume !(~x > 100); 2800#L19 call #t~ret0 := f91(11 + ~x);< 2806#f91ENTRY ~x := #in~x; 2882#L16 assume ~x > 100;#res := ~x - 10; 2881#f91FINAL assume true; 2878#f91EXIT >#26#return; 2798#L19-1 [2018-11-28 12:12:37,114 INFO L796 eck$LassoCheckResult]: Loop: 2798#L19-1 call #t~ret1 := f91(#t~ret0);< 2801#f91ENTRY ~x := #in~x; 2830#L16 assume !(~x > 100); 2831#L19 call #t~ret0 := f91(11 + ~x);< 2879#f91ENTRY ~x := #in~x; 2886#L16 assume ~x > 100;#res := ~x - 10; 2885#f91FINAL assume true; 2877#f91EXIT >#26#return; 2798#L19-1 [2018-11-28 12:12:37,114 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash -1994701169, now seen corresponding path program 3 times [2018-11-28 12:12:37,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:37,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:37,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:37,115 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:12:37,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 28 proven. 8 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-28 12:12:37,176 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 12:12:37,176 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 12:12:37,189 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 12:12:37,206 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 12:12:37,206 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 12:12:37,207 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:37,212 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-28 12:12:37,227 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 12:12:37,227 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 9 [2018-11-28 12:12:37,228 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 12:12:37,228 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:37,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1917219166, now seen corresponding path program 2 times [2018-11-28 12:12:37,228 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 12:12:37,228 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 12:12:37,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:37,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 12:12:37,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 12:12:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:37,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 12:12:37,286 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:37,286 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:37,287 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:37,287 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:37,287 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 12:12:37,287 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:37,287 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:37,287 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:37,287 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-28 12:12:37,287 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:37,287 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:37,287 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 12:12:37,288 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 12:12:37,289 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 12:12:37,310 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:37,310 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:37,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:37,312 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:37,314 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:37,314 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#res=0} Honda state: {f91_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:37,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:37,329 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:37,331 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 12:12:37,331 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {f91_#t~ret1=0} Honda state: {f91_#t~ret1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:37,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 12:12:37,347 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8cf115b4-2159-47af-934a-3b33a6fd2cc9/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:37,367 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 12:12:37,368 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 12:12:49,396 INFO L450 LassoAnalysis]: Proving nontermination failed: SMT Solver returned 'unknown'. [2018-11-28 12:12:49,400 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 12:12:49,400 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 12:12:49,400 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 12:12:49,400 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 12:12:49,400 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 12:12:49,400 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 12:12:49,400 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 12:12:49,400 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 12:12:49,400 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_true-unreach-call_true-no-overflow_true-termination.c_Iteration5_Loop [2018-11-28 12:12:49,400 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 12:12:49,400 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 12:12:49,401 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 12:12:49,406 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 12:12:49,407 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 12:12:49,423 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 12:12:49,424 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 12:12:49,424 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 12:12:49,424 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 12:12:49,424 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 12:12:49,424 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 12:12:49,425 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 12:12:49,425 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 12:12:49,425 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 12:12:49,425 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 12:12:49,427 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 12:12:49,429 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 12:12:49,429 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 12:12:49,430 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 12:12:49,430 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 12:12:49,430 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 12:12:49,430 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(f91_#t~ret0) = -2*f91_#t~ret0 + 201 Supporting invariants [] [2018-11-28 12:12:49,430 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 12:12:49,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,465 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,486 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:12:49,536 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-28 12:12:49,536 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-28 12:12:49,645 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-28 12:12:49,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:49,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 12:12:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-28 12:12:49,646 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-28 12:12:49,647 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:49,647 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:49,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:49,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,679 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:12:49,747 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-28 12:12:49,747 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-28 12:12:49,850 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 138 states and 160 transitions. Complement of second has 24 states. [2018-11-28 12:12:49,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 12:12:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 16 transitions. [2018-11-28 12:12:49,851 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 16 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-28 12:12:49,851 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:49,851 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 12:12:49,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 12:12:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,881 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 12:12:49,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 12:12:49,948 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 12:12:49,948 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 7 loop predicates [2018-11-28 12:12:49,948 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24 Second operand 9 states. [2018-11-28 12:12:50,081 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 99 states and 118 transitions. cyclomatic complexity: 24. Second operand 9 states. Result 180 states and 210 transitions. Complement of second has 27 states. [2018-11-28 12:12:50,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 8 states 2 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 12:12:50,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 12:12:50,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 20 transitions. [2018-11-28 12:12:50,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 8 letters. [2018-11-28 12:12:50,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:50,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 39 letters. Loop has 8 letters. [2018-11-28 12:12:50,083 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:50,083 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 8 states and 20 transitions. Stem has 31 letters. Loop has 16 letters. [2018-11-28 12:12:50,084 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 12:12:50,084 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 180 states and 210 transitions. [2018-11-28 12:12:50,086 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:12:50,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 180 states to 0 states and 0 transitions. [2018-11-28 12:12:50,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 12:12:50,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 12:12:50,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 12:12:50,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:12:50,086 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:12:50,087 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:12:50,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 12:12:50,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-28 12:12:50,087 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 9 states. [2018-11-28 12:12:50,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 12:12:50,087 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 12:12:50,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 12:12:50,087 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 12:12:50,087 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:12:50,088 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 12:12:50,088 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 12:12:50,088 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 12:12:50,088 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 12:12:50,088 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 12:12:50,088 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 12:12:50,088 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 12:12:50,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 12:12:50 BoogieIcfgContainer [2018-11-28 12:12:50,097 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 12:12:50,097 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 12:12:50,097 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 12:12:50,097 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 12:12:50,097 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 12:12:08" (3/4) ... [2018-11-28 12:12:50,099 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 12:12:50,099 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 12:12:50,100 INFO L168 Benchmark]: Toolchain (without parser) took 41695.58 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 953.3 MB in the beginning and 1.2 GB in the end (delta: -229.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:12:50,101 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 12:12:50,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.20 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:12:50,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:12:50,102 INFO L168 Benchmark]: Boogie Preprocessor took 9.57 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-28 12:12:50,102 INFO L168 Benchmark]: RCFGBuilder took 153.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-11-28 12:12:50,103 INFO L168 Benchmark]: BuchiAutomizer took 41359.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -62.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:12:50,103 INFO L168 Benchmark]: Witness Printer took 2.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 12:12:50,105 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 147.20 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 942.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 19.68 ms. Allocated memory is still 1.0 GB. Free memory is still 942.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 9.57 ms. Allocated memory is still 1.0 GB. Free memory was 942.6 MB in the beginning and 939.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.6 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -180.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 41359.44 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -62.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 2.64 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 2 deterministic, 3 nondeterministic). One deterministic module has affine ranking function -2 * \old(x) + 211 and consists of 4 locations. One deterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. One nondeterministic module has affine ranking function -2 * x + 189 and consists of 6 locations. One nondeterministic module has affine ranking function -1 * \old(x) + 90 and consists of 20 locations. One nondeterministic module has affine ranking function -2 * aux-f91(x+11)-aux + 201 and consists of 8 locations. 3 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 41.3s and 6 iterations. TraceHistogramMax:7. Analysis of lassos took 38.0s. Construction of modules took 0.4s. Büchi inclusion checks took 2.6s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 65 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 99 states and ocurred in iteration 4. Nontrivial modules had stage [2, 0, 3, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 12/24 HoareTripleCheckerStatistics: 155 SDtfs, 273 SDslu, 162 SDs, 0 SdLazy, 735 SolverSat, 231 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf96 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf92 smp100 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 11 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 3 LassoNonterminationAnalysisTime: 36.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...