./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash f36e762e796a59800b85d8514c20c7f73c19b5c1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 02:02:00,828 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 02:02:00,830 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 02:02:00,838 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 02:02:00,838 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 02:02:00,839 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 02:02:00,840 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 02:02:00,841 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 02:02:00,842 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 02:02:00,843 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 02:02:00,843 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 02:02:00,843 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 02:02:00,844 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 02:02:00,845 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 02:02:00,845 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 02:02:00,846 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 02:02:00,846 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 02:02:00,848 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 02:02:00,849 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 02:02:00,850 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 02:02:00,851 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 02:02:00,851 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 02:02:00,853 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 02:02:00,853 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 02:02:00,853 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 02:02:00,854 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 02:02:00,855 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 02:02:00,855 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 02:02:00,856 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 02:02:00,856 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 02:02:00,857 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 02:02:00,857 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 02:02:00,857 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 02:02:00,857 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 02:02:00,858 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 02:02:00,859 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 02:02:00,859 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-23 02:02:00,869 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 02:02:00,870 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 02:02:00,871 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-23 02:02:00,871 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-23 02:02:00,871 INFO L133 SettingsManager]: * Use SBE=true [2018-11-23 02:02:00,871 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-23 02:02:00,871 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-23 02:02:00,871 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-23 02:02:00,872 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 02:02:00,872 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 02:02:00,873 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-23 02:02:00,874 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 02:02:00,874 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 02:02:00,874 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-23 02:02:00,874 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 02:02:00,874 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-23 02:02:00,874 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-23 02:02:00,875 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-23 02:02:00,875 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_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f36e762e796a59800b85d8514c20c7f73c19b5c1 [2018-11-23 02:02:00,898 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 02:02:00,906 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 02:02:00,908 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 02:02:00,909 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 02:02:00,909 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 02:02:00,910 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:02:00,945 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/data/3633527d4/61227564c05d4c43942f9c07c69e9528/FLAGe2210a667 [2018-11-23 02:02:01,337 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 02:02:01,338 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/sv-benchmarks/c/termination-crafted/McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:02:01,342 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/data/3633527d4/61227564c05d4c43942f9c07c69e9528/FLAGe2210a667 [2018-11-23 02:02:01,350 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/data/3633527d4/61227564c05d4c43942f9c07c69e9528 [2018-11-23 02:02:01,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 02:02:01,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 02:02:01,353 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 02:02:01,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 02:02:01,355 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 02:02:01,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663897e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01, skipping insertion in model container [2018-11-23 02:02:01,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,363 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 02:02:01,373 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 02:02:01,477 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:02:01,479 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 02:02:01,487 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 02:02:01,495 INFO L195 MainTranslator]: Completed translation [2018-11-23 02:02:01,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01 WrapperNode [2018-11-23 02:02:01,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 02:02:01,496 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 02:02:01,496 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 02:02:01,496 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 02:02:01,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,508 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,522 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 02:02:01,522 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 02:02:01,522 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 02:02:01,522 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 02:02:01,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,536 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... [2018-11-23 02:02:01,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 02:02:01,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 02:02:01,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 02:02:01,538 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 02:02:01,539 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:01,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 02:02:01,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 02:02:01,699 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 02:02:01,699 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-23 02:02:01,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:01 BoogieIcfgContainer [2018-11-23 02:02:01,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 02:02:01,700 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-23 02:02:01,700 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-23 02:02:01,702 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-23 02:02:01,702 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:02:01,703 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 23.11 02:02:01" (1/3) ... [2018-11-23 02:02:01,703 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4093f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:02:01, skipping insertion in model container [2018-11-23 02:02:01,703 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:02:01,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:02:01" (2/3) ... [2018-11-23 02:02:01,704 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4093f3e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 23.11 02:02:01, skipping insertion in model container [2018-11-23 02:02:01,704 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-23 02:02:01,704 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:01" (3/3) ... [2018-11-23 02:02:01,706 INFO L375 chiAutomizerObserver]: Analyzing ICFG McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-23 02:02:01,751 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 02:02:01,752 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-23 02:02:01,752 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-23 02:02:01,752 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-23 02:02:01,752 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 02:02:01,753 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 02:02:01,753 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-23 02:02:01,753 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 02:02:01,753 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-23 02:02:01,765 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 02:02:01,782 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:01,782 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:01,782 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:01,786 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 02:02:01,786 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:01,786 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-23 02:02:01,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-11-23 02:02:01,787 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:01,787 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:01,787 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:01,787 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 02:02:01,787 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:01,792 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L15-2true [2018-11-23 02:02:01,793 INFO L796 eck$LassoCheckResult]: Loop: 8#L15-2true assume !!(main_~c~0 > 0); 3#L15true assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 8#L15-2true [2018-11-23 02:02:01,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:01,796 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-23 02:02:01,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:01,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:01,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:01,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:01,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-11-23 02:02:01,858 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:01,858 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:01,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:01,866 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-11-23 02:02:01,867 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:01,867 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:01,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,868 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:01,868 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:01,919 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:01,919 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:01,919 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:01,919 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:01,920 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:01,920 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:01,920 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:01,920 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:01,920 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-23 02:02:01,920 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:01,921 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:01,942 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:01,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:01,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:01,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,076 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,076 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,083 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,083 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,102 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:02,102 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,104 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,104 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,121 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:02,121 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,123 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,123 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,139 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:02,139 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,156 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:02,157 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:02,157 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:02,157 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:02,157 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:02,157 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:02,157 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,157 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:02,157 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:02,157 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration1_Loop [2018-11-23 02:02:02,157 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:02,157 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:02,159 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,181 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,183 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,238 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,243 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:02,244 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:02,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:02,245 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:02,246 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:02,246 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:02,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:02,248 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:02,248 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:02,254 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:02,258 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:02,258 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:02,260 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:02,260 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:02,260 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:02,260 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-23 02:02:02,261 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:02,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,292 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:02,308 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 02:02:02,309 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-11-23 02:02:02,340 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 6 states. [2018-11-23 02:02:02,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:02,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:02,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-23 02:02:02,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 02:02:02,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 02:02:02,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 02:02:02,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-23 02:02:02,347 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:02,350 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-23 02:02:02,351 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 02:02:02,351 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-23 02:02:02,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-23 02:02:02,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:02,352 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 02:02:02,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-23 02:02:02,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-11-23 02:02:02,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:02,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 02:02:02,368 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 02:02:02,369 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 02:02:02,369 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-23 02:02:02,369 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-11-23 02:02:02,369 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:02,369 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:02,369 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:02,370 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-23 02:02:02,370 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:02,370 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 68#L15-2 assume !!(main_~c~0 > 0); 63#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 64#L15-2 [2018-11-23 02:02:02,370 INFO L796 eck$LassoCheckResult]: Loop: 64#L15-2 assume !!(main_~c~0 > 0); 69#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 64#L15-2 [2018-11-23 02:02:02,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-11-23 02:02:02,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,370 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,371 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:02,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-11-23 02:02:02,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,377 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:02,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,381 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-11-23 02:02:02,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,382 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:02,383 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,398 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:02,398 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:02,398 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:02,398 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:02,398 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:02,398 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,399 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:02,399 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:02,399 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-23 02:02:02,399 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:02,399 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:02,400 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,402 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,405 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,431 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,468 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,468 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,488 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:02,488 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,490 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,490 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,505 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:02,505 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,507 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,507 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:02,524 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,540 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:02,541 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:02,541 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:02,541 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:02,542 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:02,542 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:02,542 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,542 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:02,542 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:02,542 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration2_Loop [2018-11-23 02:02:02,542 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:02,542 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:02,543 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,545 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,550 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,587 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,587 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:02,587 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:02,588 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:02,588 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:02,588 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:02,588 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:02,590 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:02,590 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:02,594 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:02,595 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:02,595 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:02,595 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:02,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:02,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:02,596 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:02,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:02,597 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:02,600 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:02,604 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:02,604 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:02,604 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:02,604 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:02,605 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:02,605 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-23 02:02:02,605 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:02,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:02,637 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 02:02:02,637 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-23 02:02:02,647 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 11 states and 16 transitions. Complement of second has 5 states. [2018-11-23 02:02:02,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:02,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:02,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 02:02:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 02:02:02,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 02:02:02,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-11-23 02:02:02,649 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,649 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-11-23 02:02:02,650 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:02,651 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-11-23 02:02:02,651 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-23 02:02:02,651 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 02:02:02,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-23 02:02:02,651 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:02,651 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 02:02:02,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-23 02:02:02,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-11-23 02:02:02,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-23 02:02:02,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-11-23 02:02:02,653 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 02:02:02,653 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-23 02:02:02,653 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-23 02:02:02,653 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2018-11-23 02:02:02,653 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-23 02:02:02,654 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:02,654 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:02,654 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-23 02:02:02,654 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:02,655 INFO L794 eck$LassoCheckResult]: Stem: 120#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 121#L15-2 assume !!(main_~c~0 > 0); 116#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 117#L15-2 assume !!(main_~c~0 > 0); 124#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 122#L15-2 [2018-11-23 02:02:02,655 INFO L796 eck$LassoCheckResult]: Loop: 122#L15-2 assume !!(main_~c~0 > 0); 123#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 122#L15-2 [2018-11-23 02:02:02,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,656 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2018-11-23 02:02:02,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:02,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-11-23 02:02:02,666 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,666 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:02,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,672 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,672 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2018-11-23 02:02:02,672 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:02,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:02,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,673 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:02,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:02,692 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:02,692 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:02,692 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:02,692 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:02,692 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:02,692 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,692 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:02,693 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:02,693 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-23 02:02:02,693 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:02,693 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:02,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,712 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,716 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,775 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,775 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,783 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:02,783 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,811 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:02,811 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:02,827 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:02,828 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:02,828 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:02,828 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:02,828 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:02,828 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:02,829 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:02,829 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:02,829 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:02,829 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration3_Loop [2018-11-23 02:02:02,829 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:02,829 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:02,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,839 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,844 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:02,883 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:02,883 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:02,883 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:02,884 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:02,884 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:02,884 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:02,884 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:02,884 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:02,885 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:02,885 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:02,890 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:02,892 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:02,892 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:02,893 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:02,893 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:02,893 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:02,893 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2018-11-23 02:02:02,893 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:02,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:02,929 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:02,929 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 02:02:02,937 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-23 02:02:02,937 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:02,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 02:02:02,938 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 02:02:02,938 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,938 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:02,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,960 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:02,967 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:02,967 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 02:02:02,973 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 13 states and 20 transitions. Complement of second has 5 states. [2018-11-23 02:02:02,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:02,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:02,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-23 02:02:02,974 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 02:02:02,974 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:02,974 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:02,989 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:02,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:02,996 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,001 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:03,001 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-11-23 02:02:03,008 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8. Second operand 3 states. Result 15 states and 23 transitions. Complement of second has 4 states. [2018-11-23 02:02:03,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:03,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:03,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-23 02:02:03,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-23 02:02:03,009 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,009 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-23 02:02:03,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-23 02:02:03,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,010 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2018-11-23 02:02:03,011 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 02:02:03,011 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-11-23 02:02:03,011 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 02:02:03,011 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 02:02:03,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-23 02:02:03,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:03,012 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-23 02:02:03,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-23 02:02:03,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2018-11-23 02:02:03,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:02:03,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-11-23 02:02:03,012 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-23 02:02:03,012 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-11-23 02:02:03,013 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-23 02:02:03,013 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2018-11-23 02:02:03,013 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 02:02:03,013 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:03,013 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:03,013 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-23 02:02:03,013 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:03,013 INFO L794 eck$LassoCheckResult]: Stem: 267#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 264#L15-2 [2018-11-23 02:02:03,013 INFO L796 eck$LassoCheckResult]: Loop: 264#L15-2 assume !!(main_~c~0 > 0); 263#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 264#L15-2 [2018-11-23 02:02:03,013 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-23 02:02:03,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2018-11-23 02:02:03,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,019 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,023 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2018-11-23 02:02:03,023 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:03,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,041 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,041 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,041 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,041 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,041 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:03,041 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,042 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,042 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,042 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-23 02:02:03,042 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,042 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,050 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,051 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,053 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,095 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,095 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,098 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,098 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,119 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:03,120 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,125 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,125 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=1}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}] Lambdas: [1, 0, 0] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,140 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,140 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,154 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,155 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,158 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,158 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,173 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,173 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,175 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,191 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:03,191 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,207 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:03,208 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,208 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,208 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,208 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,208 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:03,208 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,208 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,208 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,209 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration4_Loop [2018-11-23 02:02:03,209 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,209 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,210 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,215 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,216 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,242 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,242 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:03,242 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,242 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,243 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,243 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,243 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,243 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,244 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,244 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,247 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,247 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,248 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,248 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,248 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,248 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,249 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:03,249 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:03,256 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,256 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,258 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,259 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:03,259 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:03,262 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,262 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,263 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,263 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,263 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,263 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,263 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,264 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,264 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,266 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:03,270 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:03,271 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 02:02:03,275 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:03,275 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:03,275 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:03,275 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~n~0 + 211 Supporting invariants [] [2018-11-23 02:02:03,276 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:03,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,299 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,300 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-23 02:02:03,300 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-23 02:02:03,305 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 5 states. [2018-11-23 02:02:03,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:03,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:03,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2018-11-23 02:02:03,305 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 2 letters. [2018-11-23 02:02:03,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-23 02:02:03,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 3 transitions. Stem has 1 letters. Loop has 4 letters. [2018-11-23 02:02:03,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,306 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2018-11-23 02:02:03,307 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 02:02:03,307 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 9 states and 13 transitions. [2018-11-23 02:02:03,307 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-23 02:02:03,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-23 02:02:03,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-11-23 02:02:03,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:03,308 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-23 02:02:03,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-11-23 02:02:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2018-11-23 02:02:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 02:02:03,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 12 transitions. [2018-11-23 02:02:03,309 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2018-11-23 02:02:03,309 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 12 transitions. [2018-11-23 02:02:03,309 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-23 02:02:03,309 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 12 transitions. [2018-11-23 02:02:03,310 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-23 02:02:03,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:03,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:03,311 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1] [2018-11-23 02:02:03,311 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-23 02:02:03,311 INFO L794 eck$LassoCheckResult]: Stem: 312#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 313#L15-2 assume !!(main_~c~0 > 0); 314#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 315#L15-2 assume !!(main_~c~0 > 0); 308#L15 [2018-11-23 02:02:03,312 INFO L796 eck$LassoCheckResult]: Loop: 308#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 309#L15-2 assume !!(main_~c~0 > 0); 308#L15 [2018-11-23 02:02:03,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,312 INFO L82 PathProgramCache]: Analyzing trace with hash 963335, now seen corresponding path program 2 times [2018-11-23 02:02:03,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,336 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:02:03,336 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-23 02:02:03,338 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 02:02:03,338 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1436, now seen corresponding path program 2 times [2018-11-23 02:02:03,338 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,338 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,339 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,353 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,353 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,353 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,353 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,353 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:03,353 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,353 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,353 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,353 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-23 02:02:03,353 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,353 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,362 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,389 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,389 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,391 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,392 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,406 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,406 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,409 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,409 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,424 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,424 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,427 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,427 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,443 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:03,444 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,471 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,471 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=0} Honda state: {ULTIMATE.start_main_~c~0=0} Generalized eigenvectors: [{ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=0}, {ULTIMATE.start_main_~c~0=1}] Lambdas: [3, 12, 1] Nus: [0, 0] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,493 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,493 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,524 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:03,524 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,543 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:03,544 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,544 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,544 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,544 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,545 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:03,545 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,545 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,545 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,545 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration5_Loop [2018-11-23 02:02:03,545 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,545 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,546 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,551 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,555 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,600 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,600 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:03,600 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,601 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,601 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,601 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,601 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,602 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:03,602 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:03,604 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,604 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,605 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,605 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,605 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,605 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,605 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,606 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,606 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,608 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,608 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,608 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,608 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,609 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,609 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,609 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,609 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,609 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,611 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:03,616 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:03,616 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 02:02:03,616 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:03,616 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:03,616 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:03,616 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~n~0 + 211 Supporting invariants [] [2018-11-23 02:02:03,617 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:03,629 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,631 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,634 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,651 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:03,651 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-23 02:02:03,656 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 13 states and 17 transitions. Complement of second has 5 states. [2018-11-23 02:02:03,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:03,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:03,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 02:02:03,656 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 02:02:03,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,657 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:03,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,665 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,667 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,675 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:03,675 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-23 02:02:03,686 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 10 states and 14 transitions. Complement of second has 5 states. [2018-11-23 02:02:03,686 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:03,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:03,687 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 02:02:03,687 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,687 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:03,695 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:03,709 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-23 02:02:03,709 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6 Second operand 3 states. [2018-11-23 02:02:03,716 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 12 transitions. cyclomatic complexity: 6. Second operand 3 states. Result 16 states and 20 transitions. Complement of second has 4 states. [2018-11-23 02:02:03,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-23 02:02:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-23 02:02:03,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-23 02:02:03,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-23 02:02:03,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-23 02:02:03,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:03,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 20 transitions. [2018-11-23 02:02:03,722 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-23 02:02:03,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 12 states and 16 transitions. [2018-11-23 02:02:03,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 02:02:03,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 02:02:03,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 16 transitions. [2018-11-23 02:02:03,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:03,723 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-23 02:02:03,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 16 transitions. [2018-11-23 02:02:03,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 7. [2018-11-23 02:02:03,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:03,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-11-23 02:02:03,724 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-23 02:02:03,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:02:03,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:02:03,726 INFO L87 Difference]: Start difference. First operand 7 states and 10 transitions. Second operand 4 states. [2018-11-23 02:02:03,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:02:03,737 INFO L93 Difference]: Finished difference Result 10 states and 12 transitions. [2018-11-23 02:02:03,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:02:03,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10 states and 12 transitions. [2018-11-23 02:02:03,738 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:02:03,739 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10 states to 8 states and 10 transitions. [2018-11-23 02:02:03,739 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 02:02:03,739 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 02:02:03,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 10 transitions. [2018-11-23 02:02:03,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:03,739 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 10 transitions. [2018-11-23 02:02:03,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 10 transitions. [2018-11-23 02:02:03,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 7. [2018-11-23 02:02:03,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:03,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 9 transitions. [2018-11-23 02:02:03,740 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 02:02:03,740 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 9 transitions. [2018-11-23 02:02:03,740 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-23 02:02:03,740 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 9 transitions. [2018-11-23 02:02:03,740 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-23 02:02:03,740 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:03,740 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:03,742 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [3, 1, 1, 1] [2018-11-23 02:02:03,742 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-11-23 02:02:03,742 INFO L794 eck$LassoCheckResult]: Stem: 461#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 462#L15-2 assume !!(main_~c~0 > 0); 460#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 459#L15-2 assume !!(main_~c~0 > 0); 463#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 464#L15-2 assume !!(main_~c~0 > 0); 458#L15 [2018-11-23 02:02:03,743 INFO L796 eck$LassoCheckResult]: Loop: 458#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 459#L15-2 assume !!(main_~c~0 > 0); 463#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 464#L15-2 assume !!(main_~c~0 > 0); 458#L15 [2018-11-23 02:02:03,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,743 INFO L82 PathProgramCache]: Analyzing trace with hash 925824930, now seen corresponding path program 3 times [2018-11-23 02:02:03,743 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,743 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,744 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1380409, now seen corresponding path program 1 times [2018-11-23 02:02:03,749 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,750 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:03,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,754 INFO L82 PathProgramCache]: Analyzing trace with hash -1848815782, now seen corresponding path program 4 times [2018-11-23 02:02:03,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:03,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:03,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,755 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:03,755 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:03,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:03,796 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,797 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,797 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,797 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,797 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:03,797 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,797 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,797 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,797 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-23 02:02:03,797 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,797 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,798 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,799 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,801 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,804 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,831 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,831 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,835 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,835 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,849 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,850 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,852 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,867 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,867 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,870 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,870 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,885 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:03,885 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~c~0=1} Honda state: {ULTIMATE.start_main_~c~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,887 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:03,887 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,908 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:03,908 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:03,910 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:03,923 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:03,924 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:03,924 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:03,924 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:03,924 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:03,924 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:03,924 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:03,924 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:03,924 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration6_Loop [2018-11-23 02:02:03,924 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:03,924 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:03,925 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,927 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,929 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,933 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:03,958 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:03,958 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:03,959 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,959 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,959 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,959 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,959 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,960 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:03,960 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:03,962 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,962 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,962 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,962 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,962 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,962 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,962 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,963 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,963 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,965 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:03,965 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:03,965 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:03,965 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:03,966 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:03,966 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:03,966 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:03,966 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:03,966 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:03,969 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:03,970 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:03,970 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-23 02:02:03,970 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:03,971 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:03,971 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:03,971 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = -2*ULTIMATE.start_main_~n~0 + 201 Supporting invariants [] [2018-11-23 02:02:03,971 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:03,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:03,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:03,994 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,016 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,016 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,016 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-23 02:02:04,020 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 16 transitions. Complement of second has 5 states. [2018-11-23 02:02:04,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:02:04,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-23 02:02:04,021 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 02:02:04,022 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,022 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:04,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,037 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,042 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,070 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,071 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,071 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-23 02:02:04,088 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 11 states and 14 transitions. Complement of second has 5 states. [2018-11-23 02:02:04,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:02:04,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:04,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 02:02:04,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,089 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:04,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,098 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,102 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,118 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,118 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-23 02:02:04,122 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 16 states and 19 transitions. Complement of second has 4 states. [2018-11-23 02:02:04,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:02:04,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-23 02:02:04,122 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 02:02:04,122 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,122 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:04,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,131 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,134 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,151 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,151 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-23 02:02:04,163 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states and 9 transitions. cyclomatic complexity: 3. Second operand 4 states. Result 13 states and 18 transitions. Complement of second has 4 states. [2018-11-23 02:02:04,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:02:04,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-23 02:02:04,164 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 02:02:04,164 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,164 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:04,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,174 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,193 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,193 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,194 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. [2018-11-23 02:02:04,248 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 7 states and 9 transitions. cyclomatic complexity: 3 Second operand 4 states. Result 72 states and 96 transitions. Complement of second has 37 states 8 powerset states29 rank states. The highest rank that occured is 5 [2018-11-23 02:02:04,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-23 02:02:04,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2018-11-23 02:02:04,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-23 02:02:04,251 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,251 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 4 letters. [2018-11-23 02:02:04,252 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,252 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 6 letters. Loop has 8 letters. [2018-11-23 02:02:04,253 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,253 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 72 states and 96 transitions. [2018-11-23 02:02:04,255 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 10 [2018-11-23 02:02:04,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 72 states to 27 states and 38 transitions. [2018-11-23 02:02:04,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2018-11-23 02:02:04,255 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2018-11-23 02:02:04,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 38 transitions. [2018-11-23 02:02:04,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:04,256 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 38 transitions. [2018-11-23 02:02:04,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 38 transitions. [2018-11-23 02:02:04,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 15. [2018-11-23 02:02:04,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-23 02:02:04,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 22 transitions. [2018-11-23 02:02:04,258 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2018-11-23 02:02:04,258 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 22 transitions. [2018-11-23 02:02:04,258 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-23 02:02:04,258 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 22 transitions. [2018-11-23 02:02:04,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-23 02:02:04,259 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:04,259 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:04,259 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [4, 2, 1, 1] [2018-11-23 02:02:04,259 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2018-11-23 02:02:04,259 INFO L794 eck$LassoCheckResult]: Stem: 825#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 827#L15-2 assume !!(main_~c~0 > 0); 824#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 823#L15-2 assume !!(main_~c~0 > 0); 832#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 831#L15-2 assume !!(main_~c~0 > 0); 830#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L15-2 assume !!(main_~c~0 > 0); 822#L15 [2018-11-23 02:02:04,259 INFO L796 eck$LassoCheckResult]: Loop: 822#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 823#L15-2 assume !!(main_~c~0 > 0); 832#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 831#L15-2 assume !!(main_~c~0 > 0); 830#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 829#L15-2 assume !!(main_~c~0 > 0); 822#L15 [2018-11-23 02:02:04,259 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,259 INFO L82 PathProgramCache]: Analyzing trace with hash 659527871, now seen corresponding path program 5 times [2018-11-23 02:02:04,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:04,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:04,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,261 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:04,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:02:04,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:02:04,273 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:02:04,280 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-23 02:02:04,284 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-23 02:02:04,285 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-23 02:02:04,285 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:02:04,302 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:02:04,302 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-23 02:02:04,302 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-23 02:02:04,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 2 times [2018-11-23 02:02:04,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:04,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:04,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,303 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:04,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,356 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:04,356 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:04,356 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:04,356 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:04,356 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:04,356 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,356 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:04,356 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:04,356 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-23 02:02:04,356 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:04,356 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:04,357 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,360 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,366 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,404 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:04,404 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,407 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:04,407 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:04,422 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:04,422 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 31 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 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,425 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:04,425 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 32 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 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,442 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:04,442 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:04,480 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:04,482 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:04,482 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:04,482 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:04,482 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:04,482 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:04,482 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,482 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:04,482 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:04,482 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration7_Loop [2018-11-23 02:02:04,482 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:04,482 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:04,483 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,488 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,489 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,517 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:04,517 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:04,517 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:04,518 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:04,518 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:04,518 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:04,518 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:04,518 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:04,518 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:04,518 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:04,520 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:04,521 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:04,521 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:04,522 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:04,522 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:04,522 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:04,522 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2018-11-23 02:02:04,522 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:04,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,539 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-23 02:02:04,548 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-23 02:02:04,548 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9 Second operand 5 states. [2018-11-23 02:02:04,565 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 22 transitions. cyclomatic complexity: 9. Second operand 5 states. Result 61 states and 87 transitions. Complement of second has 9 states. [2018-11-23 02:02:04,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:02:04,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 10 transitions. [2018-11-23 02:02:04,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 6 letters. [2018-11-23 02:02:04,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 14 letters. Loop has 6 letters. [2018-11-23 02:02:04,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 10 transitions. Stem has 8 letters. Loop has 12 letters. [2018-11-23 02:02:04,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,566 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 87 transitions. [2018-11-23 02:02:04,567 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-23 02:02:04,567 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 52 states and 75 transitions. [2018-11-23 02:02:04,567 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 02:02:04,567 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 02:02:04,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 75 transitions. [2018-11-23 02:02:04,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:04,567 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 75 transitions. [2018-11-23 02:02:04,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 75 transitions. [2018-11-23 02:02:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2018-11-23 02:02:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-23 02:02:04,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 67 transitions. [2018-11-23 02:02:04,570 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 67 transitions. [2018-11-23 02:02:04,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-23 02:02:04,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-23 02:02:04,570 INFO L87 Difference]: Start difference. First operand 46 states and 67 transitions. Second operand 5 states. [2018-11-23 02:02:04,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:02:04,581 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2018-11-23 02:02:04,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-23 02:02:04,581 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 51 transitions. [2018-11-23 02:02:04,581 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-23 02:02:04,582 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 27 states and 36 transitions. [2018-11-23 02:02:04,582 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2018-11-23 02:02:04,582 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2 [2018-11-23 02:02:04,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 36 transitions. [2018-11-23 02:02:04,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:04,582 INFO L705 BuchiCegarLoop]: Abstraction has 27 states and 36 transitions. [2018-11-23 02:02:04,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 36 transitions. [2018-11-23 02:02:04,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2018-11-23 02:02:04,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-23 02:02:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 30 transitions. [2018-11-23 02:02:04,583 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-23 02:02:04,583 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 30 transitions. [2018-11-23 02:02:04,583 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-23 02:02:04,583 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 30 transitions. [2018-11-23 02:02:04,583 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-23 02:02:04,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:04,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:04,583 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [5, 2, 2, 1] [2018-11-23 02:02:04,584 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [3, 2, 1] [2018-11-23 02:02:04,584 INFO L794 eck$LassoCheckResult]: Stem: 1080#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 1081#L15-2 assume !!(main_~c~0 > 0); 1095#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1093#L15-2 assume !!(main_~c~0 > 0); 1086#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1077#L15-2 assume !!(main_~c~0 > 0); 1087#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1085#L15-2 assume !!(main_~c~0 > 0); 1084#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L15-2 assume !!(main_~c~0 > 0); 1076#L15 [2018-11-23 02:02:04,584 INFO L796 eck$LassoCheckResult]: Loop: 1076#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1077#L15-2 assume !!(main_~c~0 > 0); 1087#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1085#L15-2 assume !!(main_~c~0 > 0); 1084#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1083#L15-2 assume !!(main_~c~0 > 0); 1076#L15 [2018-11-23 02:02:04,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,584 INFO L82 PathProgramCache]: Analyzing trace with hash -1791617062, now seen corresponding path program 6 times [2018-11-23 02:02:04,584 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:04,584 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:04,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,585 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:04,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1326573462, now seen corresponding path program 3 times [2018-11-23 02:02:04,591 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:04,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:04,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:04,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:04,597 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,597 INFO L82 PathProgramCache]: Analyzing trace with hash 709032111, now seen corresponding path program 7 times [2018-11-23 02:02:04,597 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:04,597 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:04,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,598 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:04,598 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,625 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:02:04,625 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-23 02:02:04,625 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-23 02:02:04,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:04,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,638 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,641 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 41 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:02:04,656 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-23 02:02:04,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-23 02:02:04,697 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:04,697 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:04,697 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:04,697 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:04,697 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:04,697 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,697 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:04,698 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:04,698 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-23 02:02:04,698 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:04,698 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:04,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,709 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,744 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:04,744 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 34 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 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,750 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:04,751 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:04,775 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:04,775 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,779 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:04,779 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 36 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 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,799 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:04,799 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:04,802 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:04,816 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:04,816 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:04,816 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:04,816 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:04,817 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:04,817 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:04,817 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:04,817 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:04,817 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration8_Loop [2018-11-23 02:02:04,817 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:04,817 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:04,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,822 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,830 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:04,860 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:04,861 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:04,861 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:04,861 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:04,861 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:04,862 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:04,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:04,862 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:04,862 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:04,864 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:04,865 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:04,865 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:04,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:04,865 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:04,865 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:04,865 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:04,866 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:04,866 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:04,867 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:04,869 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:04,869 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:04,869 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:04,869 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:04,869 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:04,869 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-23 02:02:04,869 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:04,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,893 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:04,924 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-23 02:02:04,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2018-11-23 02:02:04,944 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2018-11-23 02:02:04,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:02:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-23 02:02:04,949 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-23 02:02:04,949 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:04,950 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:04,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:04,989 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,005 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,006 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-23 02:02:05,006 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2018-11-23 02:02:05,022 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 45 states and 56 transitions. Complement of second has 7 states. [2018-11-23 02:02:05,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:02:05,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-23 02:02:05,023 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-23 02:02:05,023 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,024 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:05,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,043 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,060 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-23 02:02:05,060 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13 Second operand 5 states. [2018-11-23 02:02:05,080 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 30 transitions. cyclomatic complexity: 13. Second operand 5 states. Result 75 states and 99 transitions. Complement of second has 13 states. [2018-11-23 02:02:05,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-23 02:02:05,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-23 02:02:05,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 6 letters. [2018-11-23 02:02:05,081 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,081 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 16 letters. Loop has 6 letters. [2018-11-23 02:02:05,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,082 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 10 letters. Loop has 12 letters. [2018-11-23 02:02:05,082 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,083 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 99 transitions. [2018-11-23 02:02:05,084 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 22 [2018-11-23 02:02:05,084 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 52 states and 71 transitions. [2018-11-23 02:02:05,084 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-23 02:02:05,084 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-23 02:02:05,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 71 transitions. [2018-11-23 02:02:05,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:05,085 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 71 transitions. [2018-11-23 02:02:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 71 transitions. [2018-11-23 02:02:05,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-11-23 02:02:05,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-23 02:02:05,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 58 transitions. [2018-11-23 02:02:05,088 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 58 transitions. [2018-11-23 02:02:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-23 02:02:05,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-23 02:02:05,088 INFO L87 Difference]: Start difference. First operand 40 states and 58 transitions. Second operand 7 states. [2018-11-23 02:02:05,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:02:05,102 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2018-11-23 02:02:05,103 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-23 02:02:05,103 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 68 states and 85 transitions. [2018-11-23 02:02:05,104 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 18 [2018-11-23 02:02:05,105 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 68 states to 51 states and 67 transitions. [2018-11-23 02:02:05,105 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2 [2018-11-23 02:02:05,105 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-23 02:02:05,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 67 transitions. [2018-11-23 02:02:05,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:05,105 INFO L705 BuchiCegarLoop]: Abstraction has 51 states and 67 transitions. [2018-11-23 02:02:05,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states and 67 transitions. [2018-11-23 02:02:05,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 33. [2018-11-23 02:02:05,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 02:02:05,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2018-11-23 02:02:05,107 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2018-11-23 02:02:05,108 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 43 transitions. [2018-11-23 02:02:05,108 INFO L442 BuchiCegarLoop]: ======== Iteration 9============ [2018-11-23 02:02:05,108 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 43 transitions. [2018-11-23 02:02:05,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 12 [2018-11-23 02:02:05,108 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:05,108 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:05,109 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-23 02:02:05,109 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [4, 2, 2] [2018-11-23 02:02:05,109 INFO L794 eck$LassoCheckResult]: Stem: 1623#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 1625#L15-2 assume !!(main_~c~0 > 0); 1639#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1636#L15-2 assume !!(main_~c~0 > 0); 1632#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1631#L15-2 [2018-11-23 02:02:05,109 INFO L796 eck$LassoCheckResult]: Loop: 1631#L15-2 assume !!(main_~c~0 > 0); 1628#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1629#L15-2 assume !!(main_~c~0 > 0); 1633#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1626#L15-2 assume !!(main_~c~0 > 0); 1619#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1620#L15-2 assume !!(main_~c~0 > 0); 1632#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1631#L15-2 [2018-11-23 02:02:05,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,109 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 4 times [2018-11-23 02:02:05,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 02:02:05,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,115 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1687002897, now seen corresponding path program 4 times [2018-11-23 02:02:05,115 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-23 02:02:05,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-23 02:02:05,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-23 02:02:05,147 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-23 02:02:05,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-23 02:02:05,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-23 02:02:05,147 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-23 02:02:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-23 02:02:05,154 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2018-11-23 02:02:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-23 02:02:05,155 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 63 transitions. [2018-11-23 02:02:05,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-23 02:02:05,156 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 39 states and 47 transitions. [2018-11-23 02:02:05,156 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-23 02:02:05,156 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-23 02:02:05,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 47 transitions. [2018-11-23 02:02:05,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:05,156 INFO L705 BuchiCegarLoop]: Abstraction has 39 states and 47 transitions. [2018-11-23 02:02:05,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 47 transitions. [2018-11-23 02:02:05,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 33. [2018-11-23 02:02:05,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-23 02:02:05,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2018-11-23 02:02:05,158 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2018-11-23 02:02:05,159 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 41 transitions. [2018-11-23 02:02:05,159 INFO L442 BuchiCegarLoop]: ======== Iteration 10============ [2018-11-23 02:02:05,159 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 41 transitions. [2018-11-23 02:02:05,159 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-23 02:02:05,159 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:05,159 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:05,160 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-23 02:02:05,160 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [5, 3, 2] [2018-11-23 02:02:05,160 INFO L794 eck$LassoCheckResult]: Stem: 1714#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 1716#L15-2 assume !!(main_~c~0 > 0); 1730#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1725#L15-2 assume !!(main_~c~0 > 0); 1721#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1717#L15-2 [2018-11-23 02:02:05,160 INFO L796 eck$LassoCheckResult]: Loop: 1717#L15-2 assume !!(main_~c~0 > 0); 1718#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1720#L15-2 assume !!(main_~c~0 > 0); 1726#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1724#L15-2 assume !!(main_~c~0 > 0); 1710#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1711#L15-2 assume !!(main_~c~0 > 0); 1729#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 1727#L15-2 assume !!(main_~c~0 > 0); 1723#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 1717#L15-2 [2018-11-23 02:02:05,160 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,160 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 5 times [2018-11-23 02:02:05,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,161 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,166 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,166 INFO L82 PathProgramCache]: Analyzing trace with hash 2007111828, now seen corresponding path program 5 times [2018-11-23 02:02:05,166 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,166 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,167 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,171 INFO L82 PathProgramCache]: Analyzing trace with hash -254222659, now seen corresponding path program 8 times [2018-11-23 02:02:05,171 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,244 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:05,244 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:05,244 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:05,244 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:05,244 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:05,244 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,244 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:05,244 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:05,244 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-23 02:02:05,244 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:05,244 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:05,245 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,247 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,277 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:05,277 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 37 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 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,283 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:05,283 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:05,308 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-23 02:02:05,308 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_17=1} Honda state: {v_rep~unnamed0~0~true_17=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,317 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:05,318 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,348 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:05,348 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:05,350 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:05,364 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:05,364 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:05,364 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:05,364 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:05,364 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:05,364 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,364 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:05,364 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:05,364 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration10_Loop [2018-11-23 02:02:05,364 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:05,364 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:05,365 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,367 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,375 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,380 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,403 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:05,403 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:05,403 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:05,404 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:05,404 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:05,404 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:05,404 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:05,405 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-23 02:02:05,405 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-23 02:02:05,407 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-23 02:02:05,408 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:05,408 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:05,408 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:05,408 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:05,408 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:05,409 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:05,409 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:05,409 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:05,410 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:05,412 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:05,412 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:05,412 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:05,412 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:05,413 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:05,413 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~n~0) = 1*ULTIMATE.start_main_~n~0 Supporting invariants [] [2018-11-23 02:02:05,413 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:05,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,450 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,491 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,491 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 02:02:05,491 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-11-23 02:02:05,494 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2018-11-23 02:02:05,494 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:05,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:05,495 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:02:05,495 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,495 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:05,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,504 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,510 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,536 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 02:02:05,537 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-11-23 02:02:05,540 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 37 states and 47 transitions. Complement of second has 5 states. [2018-11-23 02:02:05,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:05,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:05,541 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:02:05,541 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,541 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:05,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,587 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,587 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 02:02:05,587 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-11-23 02:02:05,593 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 46 states and 60 transitions. Complement of second has 4 states. [2018-11-23 02:02:05,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:05,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-11-23 02:02:05,593 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:02:05,593 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,594 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:05,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,609 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,636 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,636 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 02:02:05,636 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-11-23 02:02:05,680 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 41 transitions. cyclomatic complexity: 12. Second operand 7 states. Result 63 states and 75 transitions. Complement of second has 8 states. [2018-11-23 02:02:05,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-11-23 02:02:05,682 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:02:05,682 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,682 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:05,691 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:05,702 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 14 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-23 02:02:05,725 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemin loopwithout honda bouncer for stem and without honda bouncer for loop.1 stem predicates 5 loop predicates [2018-11-23 02:02:05,726 INFO L104 BuchiDifferenceFKV]: Start buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. [2018-11-23 02:02:05,752 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,753 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,753 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,753 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,756 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,779 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,779 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,779 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,780 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,780 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,780 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,780 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,780 WARN L278 uchiComplementFKVNwa]: big8 [2018-11-23 02:02:05,785 INFO L108 BuchiDifferenceFKV]: Finished buchiDifferenceFKV. First operand 33 states and 41 transitions. cyclomatic complexity: 12 Second operand 7 states. Result 404 states and 547 transitions. Complement of second has 85 states 12 powerset states73 rank states. The highest rank that occured is 7 [2018-11-23 02:02:05,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:05,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-11-23 02:02:05,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 29 transitions. [2018-11-23 02:02:05,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-23 02:02:05,787 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,787 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 15 letters. Loop has 10 letters. [2018-11-23 02:02:05,788 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,788 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 29 transitions. Stem has 5 letters. Loop has 20 letters. [2018-11-23 02:02:05,790 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:05,790 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 404 states and 547 transitions. [2018-11-23 02:02:05,794 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 24 [2018-11-23 02:02:05,795 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 404 states to 145 states and 187 transitions. [2018-11-23 02:02:05,795 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-23 02:02:05,795 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-23 02:02:05,795 INFO L73 IsDeterministic]: Start isDeterministic. Operand 145 states and 187 transitions. [2018-11-23 02:02:05,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-23 02:02:05,795 INFO L705 BuchiCegarLoop]: Abstraction has 145 states and 187 transitions. [2018-11-23 02:02:05,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states and 187 transitions. [2018-11-23 02:02:05,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 96. [2018-11-23 02:02:05,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-23 02:02:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 129 transitions. [2018-11-23 02:02:05,800 INFO L728 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2018-11-23 02:02:05,800 INFO L608 BuchiCegarLoop]: Abstraction has 96 states and 129 transitions. [2018-11-23 02:02:05,800 INFO L442 BuchiCegarLoop]: ======== Iteration 11============ [2018-11-23 02:02:05,801 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 96 states and 129 transitions. [2018-11-23 02:02:05,801 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 17 [2018-11-23 02:02:05,801 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-23 02:02:05,801 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-23 02:02:05,802 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-11-23 02:02:05,802 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [7, 4, 3] [2018-11-23 02:02:05,802 INFO L794 eck$LassoCheckResult]: Stem: 2707#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_~c~0, main_~n~0;havoc main_~c~0;havoc main_~n~0;main_~c~0 := 1;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 2710#L15-2 assume !!(main_~c~0 > 0); 2734#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 2730#L15-2 assume !!(main_~c~0 > 0); 2716#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 2712#L15-2 [2018-11-23 02:02:05,802 INFO L796 eck$LassoCheckResult]: Loop: 2712#L15-2 assume !!(main_~c~0 > 0); 2713#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 2764#L15-2 assume !!(main_~c~0 > 0); 2758#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 2756#L15-2 assume !!(main_~c~0 > 0); 2750#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 2749#L15-2 assume !!(main_~c~0 > 0); 2748#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 2740#L15-2 assume !!(main_~c~0 > 0); 2719#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 2731#L15-2 assume !!(main_~c~0 > 0); 2729#L15 assume main_~n~0 > 100;main_~n~0 := main_~n~0 - 10;main_~c~0 := main_~c~0 - 1; 2727#L15-2 assume !!(main_~c~0 > 0); 2715#L15 assume !(main_~n~0 > 100);main_~n~0 := 11 + main_~n~0;main_~c~0 := 1 + main_~c~0; 2712#L15-2 [2018-11-23 02:02:05,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,802 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 6 times [2018-11-23 02:02:05,802 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,802 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,806 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,806 INFO L82 PathProgramCache]: Analyzing trace with hash 822111324, now seen corresponding path program 6 times [2018-11-23 02:02:05,807 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 128316933, now seen corresponding path program 9 times [2018-11-23 02:02:05,814 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-23 02:02:05,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-23 02:02:05,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,814 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-23 02:02:05,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 02:02:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 02:02:05,896 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:05,896 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:05,896 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:05,896 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:05,896 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-23 02:02:05,896 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,896 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:05,896 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:05,896 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration11_Loop [2018-11-23 02:02:05,896 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:05,896 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:05,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,903 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:05,938 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:05,939 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,941 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-23 02:02:05,941 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_26225a3a-96a6-4a5c-8f5e-9f0b947df697/bin-2019/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:05,958 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-23 02:02:05,958 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-23 02:02:05,999 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-23 02:02:06,000 INFO L216 LassoAnalysis]: Preferences: [2018-11-23 02:02:06,000 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-23 02:02:06,000 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-23 02:02:06,000 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-23 02:02:06,000 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-23 02:02:06,000 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-23 02:02:06,000 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-23 02:02:06,000 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-23 02:02:06,000 INFO L131 ssoRankerPreferences]: Filename of dumped script: McCarthy91_Iteration_true-no-overflow_true-termination_true-valid-memsafety.c_Iteration11_Loop [2018-11-23 02:02:06,000 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-23 02:02:06,000 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-23 02:02:06,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:06,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:06,010 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:06,011 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-23 02:02:06,031 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-23 02:02:06,032 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-23 02:02:06,032 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-23 02:02:06,032 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-23 02:02:06,032 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-23 02:02:06,032 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-23 02:02:06,033 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-23 02:02:06,033 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-23 02:02:06,033 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-23 02:02:06,033 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-23 02:02:06,034 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-23 02:02:06,035 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-23 02:02:06,035 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-23 02:02:06,036 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-23 02:02:06,036 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-23 02:02:06,036 INFO L518 LassoAnalysis]: Proved termination. [2018-11-23 02:02:06,036 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~c~0) = 1*ULTIMATE.start_main_~c~0 Supporting invariants [] [2018-11-23 02:02:06,036 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-23 02:02:06,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 02:02:06,086 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2018-11-23 02:02:06,086 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 8 states. [2018-11-23 02:02:06,092 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 8 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2018-11-23 02:02:06,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 02:02:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:06,092 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2018-11-23 02:02:06,093 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,093 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:06,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,144 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 02:02:06,145 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2018-11-23 02:02:06,145 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 8 states. [2018-11-23 02:02:06,153 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 8 states. Result 104 states and 145 transitions. Complement of second has 5 states. [2018-11-23 02:02:06,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:06,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 02:02:06,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-23 02:02:06,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 5 letters. Loop has 14 letters. [2018-11-23 02:02:06,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,155 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:06,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,175 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,210 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 02:02:06,210 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 6 loop predicates [2018-11-23 02:02:06,210 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 8 states. [2018-11-23 02:02:06,222 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 8 states. Result 150 states and 202 transitions. Complement of second has 7 states. [2018-11-23 02:02:06,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:06,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 02:02:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-23 02:02:06,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 14 letters. [2018-11-23 02:02:06,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,223 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-23 02:02:06,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 02:02:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,234 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-23 02:02:06,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-23 02:02:06,267 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-23 02:02:06,268 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and with honda bouncer for loop.1 stem predicates 6 loop predicates [2018-11-23 02:02:06,268 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42 Second operand 8 states. [2018-11-23 02:02:06,296 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 96 states and 129 transitions. cyclomatic complexity: 42. Second operand 8 states. Result 195 states and 261 transitions. Complement of second has 12 states. [2018-11-23 02:02:06,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 4 non-accepting loop states 1 accepting loop states [2018-11-23 02:02:06,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-23 02:02:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 13 transitions. [2018-11-23 02:02:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 14 letters. [2018-11-23 02:02:06,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,298 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 19 letters. Loop has 14 letters. [2018-11-23 02:02:06,298 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,299 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 13 transitions. Stem has 5 letters. Loop has 28 letters. [2018-11-23 02:02:06,299 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-23 02:02:06,299 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 195 states and 261 transitions. [2018-11-23 02:02:06,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 02:02:06,301 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 195 states to 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-23 02:02:06,301 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-23 02:02:06,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-23 02:02:06,301 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L442 BuchiCegarLoop]: ======== Iteration 12============ [2018-11-23 02:02:06,301 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-23 02:02:06,301 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-23 02:02:06,301 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-23 02:02:06,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 23.11 02:02:06 BoogieIcfgContainer [2018-11-23 02:02:06,307 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-23 02:02:06,307 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 02:02:06,307 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 02:02:06,308 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 02:02:06,308 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:02:01" (3/4) ... [2018-11-23 02:02:06,311 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 02:02:06,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 02:02:06,312 INFO L168 Benchmark]: Toolchain (without parser) took 4959.64 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 316.1 MB). Free memory was 959.1 MB in the beginning and 1.1 GB in the end (delta: -133.3 MB). Peak memory consumption was 182.8 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,313 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:02:06,313 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.89 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,313 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,314 INFO L168 Benchmark]: Boogie Preprocessor took 15.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,314 INFO L168 Benchmark]: RCFGBuilder took 161.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,315 INFO L168 Benchmark]: BuchiAutomizer took 4607.37 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 185.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 207.4 MB. Max. memory is 11.5 GB. [2018-11-23 02:02:06,315 INFO L168 Benchmark]: Witness Printer took 3.79 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 02:02:06,317 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.89 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 948.4 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 25.63 ms. Allocated memory is still 1.0 GB. Free memory was 948.4 MB in the beginning and 945.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.88 ms. Allocated memory is still 1.0 GB. Free memory was 945.7 MB in the beginning and 940.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 161.30 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 131.1 MB). Free memory was 940.3 MB in the beginning and 1.1 GB in the end (delta: -174.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4607.37 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 185.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.3 MB). Peak memory consumption was 207.4 MB. Max. memory is 11.5 GB. * Witness Printer took 3.79 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 14 terminating modules (4 trivial, 4 deterministic, 6 nondeterministic). One deterministic module has affine ranking function n and consists of 4 locations. One deterministic module has affine ranking function n and consists of 3 locations. One deterministic module has affine ranking function -2 * n + 211 and consists of 3 locations. One deterministic module has affine ranking function c and consists of 5 locations. One nondeterministic module has affine ranking function c and consists of 3 locations. One nondeterministic module has affine ranking function -2 * n + 211 and consists of 3 locations. One nondeterministic module has affine ranking function -2 * n + 201 and consists of 5 locations. One nondeterministic module has affine ranking function n and consists of 5 locations. One nondeterministic module has affine ranking function n and consists of 7 locations. One nondeterministic module has affine ranking function c and consists of 6 locations. 4 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.5s and 12 iterations. TraceHistogramMax:7. Analysis of lassos took 2.8s. Construction of modules took 0.1s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 7. Minimization of det autom 1. Minimization of nondet autom 13. Automata minimization 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 124 StatesRemovedByMinimization, 11 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 96 states and ocurred in iteration 10. Nontrivial modules had stage [4, 0, 3, 1, 2]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 58/76 HoareTripleCheckerStatistics: 130 SDtfs, 119 SDslu, 53 SDs, 0 SdLazy, 240 SolverSat, 67 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT7 conc0 concLT1 SILN0 SILU0 SILI0 SILT2 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax160 hnf98 lsp36 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf94 smp98 dnf100 smp100 tf112 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 7ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 14 LassoNonterminationAnalysisSatUnbounded: 2 LassoNonterminationAnalysisUnsat: 10 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...