./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 23:47:33,443 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 23:47:33,444 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 23:47:33,450 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 23:47:33,450 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 23:47:33,451 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 23:47:33,452 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 23:47:33,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 23:47:33,453 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 23:47:33,454 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 23:47:33,454 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 23:47:33,454 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 23:47:33,455 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 23:47:33,455 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 23:47:33,456 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 23:47:33,456 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 23:47:33,457 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 23:47:33,458 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 23:47:33,458 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 23:47:33,459 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 23:47:33,460 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 23:47:33,460 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 23:47:33,461 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 23:47:33,462 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 23:47:33,462 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 23:47:33,462 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 23:47:33,463 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 23:47:33,463 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 23:47:33,463 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 23:47:33,464 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 23:47:33,464 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 23:47:33,464 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 23:47:33,465 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 23:47:33,465 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 23:47:33,465 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 23:47:33,465 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 23:47:33,466 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-12-08 23:47:33,473 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 23:47:33,474 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 23:47:33,474 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 23:47:33,474 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 23:47:33,474 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 23:47:33,474 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 23:47:33,475 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 23:47:33,475 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 23:47:33,476 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 23:47:33,476 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 23:47:33,476 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 23:47:33,477 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 23:47:33,477 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_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7e9d7ee8b64b2fe79b2fb3806ae1ecb1089e2e41 [2018-12-08 23:47:33,493 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 23:47:33,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 23:47:33,502 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 23:47:33,503 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 23:47:33,503 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 23:47:33,504 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-12-08 23:47:33,538 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/data/7ffd02699/0edf4f2334fb46989bfeb7338b82c89c/FLAG8d73da6e7 [2018-12-08 23:47:33,922 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 23:47:33,922 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/sv-benchmarks/c/termination-crafted-lit/CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-12-08 23:47:33,926 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/data/7ffd02699/0edf4f2334fb46989bfeb7338b82c89c/FLAG8d73da6e7 [2018-12-08 23:47:33,933 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/bin-2019/uautomizer/data/7ffd02699/0edf4f2334fb46989bfeb7338b82c89c [2018-12-08 23:47:33,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 23:47:33,936 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 23:47:33,936 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:33,936 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 23:47:33,938 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 23:47:33,939 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:33" (1/1) ... [2018-12-08 23:47:33,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@432dabb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:33, skipping insertion in model container [2018-12-08 23:47:33,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 11:47:33" (1/1) ... [2018-12-08 23:47:33,944 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 23:47:33,953 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 23:47:34,036 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:34,039 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 23:47:34,047 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 23:47:34,057 INFO L195 MainTranslator]: Completed translation [2018-12-08 23:47:34,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34 WrapperNode [2018-12-08 23:47:34,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 23:47:34,058 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:34,058 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 23:47:34,058 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 23:47:34,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,066 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,076 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 23:47:34,076 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 23:47:34,076 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 23:47:34,076 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 23:47:34,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,082 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,082 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,086 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... [2018-12-08 23:47:34,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 23:47:34,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 23:47:34,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 23:47:34,087 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 23:47:34,087 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 23:47:34,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 23:47:34,219 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 23:47:34,220 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-12-08 23:47:34,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:34 BoogieIcfgContainer [2018-12-08 23:47:34,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 23:47:34,220 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 23:47:34,220 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 23:47:34,223 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 23:47:34,224 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:47:34,224 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 11:47:33" (1/3) ... [2018-12-08 23:47:34,225 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d76c59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:47:34, skipping insertion in model container [2018-12-08 23:47:34,225 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:47:34,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 11:47:34" (2/3) ... [2018-12-08 23:47:34,226 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3d76c59e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 11:47:34, skipping insertion in model container [2018-12-08 23:47:34,226 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 23:47:34,226 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:34" (3/3) ... [2018-12-08 23:47:34,228 INFO L375 chiAutomizerObserver]: Analyzing ICFG CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c [2018-12-08 23:47:34,269 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 23:47:34,270 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 23:47:34,270 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 23:47:34,270 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 23:47:34,270 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 23:47:34,270 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 23:47:34,270 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 23:47:34,270 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 23:47:34,270 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 23:47:34,279 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 23:47:34,291 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:34,291 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:47:34,291 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:47:34,295 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 23:47:34,295 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 23:47:34,295 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 23:47:34,295 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2018-12-08 23:47:34,296 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:34,296 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:47:34,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:47:34,296 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 23:47:34,296 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 23:47:34,301 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L19-2true [2018-12-08 23:47:34,301 INFO L796 eck$LassoCheckResult]: Loop: 6#L19-2true assume !!(main_~x~0 > 0 && main_~y~0 > 0); 8#L19true assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 6#L19-2true [2018-12-08 23:47:34,304 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-12-08 23:47:34,305 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,306 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:34,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 1 times [2018-12-08 23:47:34,370 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,371 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,371 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:34,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,378 INFO L82 PathProgramCache]: Analyzing trace with hash 31075, now seen corresponding path program 1 times [2018-12-08 23:47:34,378 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,378 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:34,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,411 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:34,412 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:34,412 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:34,412 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:34,412 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:47:34,412 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:34,412 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:34,412 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:34,412 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 23:47:34,412 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:34,413 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:34,427 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,433 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,435 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,450 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,509 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:34,510 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,514 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:34,514 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:34,539 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:34,539 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_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,542 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:34,542 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:34,556 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:34,556 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_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,559 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:34,559 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,575 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:47:34,575 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:34,593 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:47:34,594 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:34,594 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:34,594 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:34,594 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:34,594 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:47:34,594 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:34,594 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:34,594 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:34,595 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration1_Loop [2018-12-08 23:47:34,595 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:34,595 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:34,596 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,600 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,604 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,606 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,642 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:34,645 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:47:34,646 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 [2018-12-08 23:47:34,646 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:34,647 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:34,647 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:34,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:34,649 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:34,649 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:34,654 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:34,654 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 [2018-12-08 23:47:34,655 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:34,655 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:34,655 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:34,655 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:34,656 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:34,657 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:34,661 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:34,661 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 [2018-12-08 23:47:34,662 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:34,662 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:34,662 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:34,662 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:34,662 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:34,663 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:34,663 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:34,666 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:47:34,667 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:47:34,668 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 23:47:34,669 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:47:34,669 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:47:34,669 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:47:34,669 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 23:47:34,670 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:47:34,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:34,694 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:34,700 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:34,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:34,718 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 [2018-12-08 23:47:34,718 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states. Second operand 3 states. [2018-12-08 23:47:34,746 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 7 states.. Second operand 3 states. Result 23 states and 30 transitions. Complement of second has 8 states. [2018-12-08 23:47:34,746 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-12-08 23:47:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:34,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 11 transitions. [2018-12-08 23:47:34,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 23:47:34,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 23:47:34,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,749 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 11 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 23:47:34,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,750 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-08 23:47:34,751 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:34,754 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-12-08 23:47:34,754 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-12-08 23:47:34,754 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-12-08 23:47:34,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-12-08 23:47:34,755 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:47:34,755 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 23:47:34,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-12-08 23:47:34,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2018-12-08 23:47:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2018-12-08 23:47:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 10 transitions. [2018-12-08 23:47:34,770 INFO L728 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 23:47:34,771 INFO L608 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-12-08 23:47:34,771 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 23:47:34,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states and 10 transitions. [2018-12-08 23:47:34,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:34,771 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:47:34,771 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:47:34,771 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 23:47:34,771 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 23:47:34,772 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 73#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 69#L19-2 [2018-12-08 23:47:34,772 INFO L796 eck$LassoCheckResult]: Loop: 69#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 70#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 69#L19-2 [2018-12-08 23:47:34,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 1 times [2018-12-08 23:47:34,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:34,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,778 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,778 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 2 times [2018-12-08 23:47:34,778 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,778 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:34,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,782 INFO L82 PathProgramCache]: Analyzing trace with hash 29865320, now seen corresponding path program 1 times [2018-12-08 23:47:34,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:34,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:34,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,783 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:47:34,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:34,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:34,810 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:34,810 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:34,810 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:34,810 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:34,811 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:47:34,811 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:34,811 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:34,811 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:34,811 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 23:47:34,811 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:34,811 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:34,812 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,814 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,850 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:34,850 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,852 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:34,852 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:34,866 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:34,867 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_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,869 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:34,869 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:34,886 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:47:34,886 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:34,902 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:47:34,903 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:34,903 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:34,903 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:34,903 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:34,903 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:47:34,903 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:34,903 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:34,903 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:34,903 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration2_Loop [2018-12-08 23:47:34,903 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:34,903 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:34,904 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,907 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,910 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,913 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:34,945 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:34,945 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:47:34,945 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 [2018-12-08 23:47:34,946 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:34,946 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:34,946 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:34,946 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:34,947 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:34,948 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:34,951 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:34,951 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 [2018-12-08 23:47:34,952 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:34,952 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:34,952 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:34,952 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:34,952 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:34,953 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:34,953 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:34,957 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:47:34,960 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:47:34,960 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 23:47:34,960 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:47:34,961 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:47:34,961 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:47:34,961 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 23:47:34,961 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:47:34,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:34,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:34,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:34,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:34,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:34,987 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 [2018-12-08 23:47:34,988 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 7 states and 10 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-12-08 23:47:34,994 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. [2018-12-08 23:47:34,994 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 [2018-12-08 23:47:34,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:34,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 23:47:34,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 23:47:34,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 23:47:34,996 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,996 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 3 letters. Loop has 4 letters. [2018-12-08 23:47:34,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:34,997 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 16 transitions. [2018-12-08 23:47:34,997 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:34,998 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 23:47:34,998 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-12-08 23:47:34,998 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 23:47:34,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-12-08 23:47:34,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:47:34,998 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 23:47:34,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-12-08 23:47:34,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-12-08 23:47:34,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-12-08 23:47:34,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 16 transitions. [2018-12-08 23:47:35,000 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 23:47:35,000 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-12-08 23:47:35,000 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 23:47:35,000 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 16 transitions. [2018-12-08 23:47:35,000 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-12-08 23:47:35,000 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:47:35,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:47:35,001 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1] [2018-12-08 23:47:35,001 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 23:47:35,001 INFO L794 eck$LassoCheckResult]: Stem: 121#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 122#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 127#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 128#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 129#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 123#L19-2 [2018-12-08 23:47:35,001 INFO L796 eck$LassoCheckResult]: Loop: 123#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 124#L19 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 123#L19-2 [2018-12-08 23:47:35,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,001 INFO L82 PathProgramCache]: Analyzing trace with hash 29865322, now seen corresponding path program 2 times [2018-12-08 23:47:35,002 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,002 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:35,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1284, now seen corresponding path program 3 times [2018-12-08 23:47:35,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,011 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:47:35,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1364196307, now seen corresponding path program 2 times [2018-12-08 23:47:35,014 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,014 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,015 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:47:35,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,035 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:35,035 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:35,035 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:35,035 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:35,036 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:47:35,036 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:35,036 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:35,036 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:35,036 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 23:47:35,036 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:35,036 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:35,037 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,039 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,042 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,043 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,072 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:35,072 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,073 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,074 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,077 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,077 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=7} Honda state: {ULTIMATE.start_main_#t~nondet2=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,100 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,100 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,122 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,122 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,125 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,125 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,149 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,149 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,152 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,152 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,168 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,168 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,171 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,171 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,187 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:47:35,187 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,202 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:47:35,203 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:35,203 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:35,204 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:35,204 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:35,204 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:47:35,204 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:35,204 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:35,204 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:35,204 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration3_Loop [2018-12-08 23:47:35,204 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:35,204 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:35,205 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,209 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,213 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,244 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:35,245 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:47:35,245 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 [2018-12-08 23:47:35,245 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,245 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:35,245 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,246 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-12-08 23:47:35,246 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,246 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-12-08 23:47:35,246 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:35,248 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,248 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 [2018-12-08 23:47:35,249 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,249 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,249 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,249 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,250 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:35,250 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:35,252 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,252 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 [2018-12-08 23:47:35,253 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,253 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:35,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,253 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,253 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:35,253 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:35,254 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,254 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 [2018-12-08 23:47:35,255 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,255 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,255 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,255 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,256 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:35,256 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:35,257 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,257 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 [2018-12-08 23:47:35,258 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,258 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:35,258 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,258 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,258 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,258 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:35,258 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:35,260 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:47:35,261 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:47:35,261 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 23:47:35,262 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:47:35,262 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:47:35,262 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:47:35,262 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-12-08 23:47:35,262 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:47:35,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,287 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:35,293 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 [2018-12-08 23:47:35,294 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 23:47:35,302 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. [2018-12-08 23:47:35,303 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 [2018-12-08 23:47:35,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:35,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 23:47:35,303 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 23:47:35,303 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,303 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:47:35,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:35,326 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 [2018-12-08 23:47:35,326 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 23:47:35,331 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. [2018-12-08 23:47:35,331 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 [2018-12-08 23:47:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:35,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-12-08 23:47:35,332 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 23:47:35,332 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,332 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-12-08 23:47:35,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,347 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:35,357 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 [2018-12-08 23:47:35,357 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 16 transitions. cyclomatic complexity: 8 Second operand 3 states. [2018-12-08 23:47:35,364 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. [2018-12-08 23:47:35,365 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 [2018-12-08 23:47:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:35,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 7 transitions. [2018-12-08 23:47:35,365 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 2 letters. [2018-12-08 23:47:35,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 7 letters. Loop has 2 letters. [2018-12-08 23:47:35,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,366 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 7 transitions. Stem has 5 letters. Loop has 4 letters. [2018-12-08 23:47:35,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 23 transitions. [2018-12-08 23:47:35,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:47:35,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-12-08 23:47:35,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-12-08 23:47:35,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-12-08 23:47:35,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-12-08 23:47:35,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 23:47:35,368 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-12-08 23:47:35,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-12-08 23:47:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 5. [2018-12-08 23:47:35,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-12-08 23:47:35,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2018-12-08 23:47:35,370 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-12-08 23:47:35,370 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2018-12-08 23:47:35,370 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 23:47:35,370 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2018-12-08 23:47:35,370 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-12-08 23:47:35,370 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 23:47:35,370 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 23:47:35,371 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-12-08 23:47:35,371 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-12-08 23:47:35,371 INFO L794 eck$LassoCheckResult]: Stem: 268#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 269#L19-2 [2018-12-08 23:47:35,371 INFO L796 eck$LassoCheckResult]: Loop: 269#L19-2 assume !!(main_~x~0 > 0 && main_~y~0 > 0); 271#L19 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~x~0 := main_#t~nondet3;havoc main_#t~nondet3;main_~y~0 := main_~y~0 - 1; 269#L19-2 [2018-12-08 23:47:35,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,371 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-12-08 23:47:35,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,373 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:47:35,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1286, now seen corresponding path program 1 times [2018-12-08 23:47:35,376 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,376 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,377 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-12-08 23:47:35,377 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,381 INFO L82 PathProgramCache]: Analyzing trace with hash 31077, now seen corresponding path program 3 times [2018-12-08 23:47:35,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 23:47:35,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 23:47:35,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,382 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 23:47:35,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 23:47:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 23:47:35,413 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:35,413 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:35,413 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:35,413 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:35,413 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 23:47:35,413 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:35,413 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:35,413 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:35,413 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 23:47:35,414 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:35,414 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:35,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,416 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,422 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,450 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:35,450 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,452 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,452 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,454 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,454 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,483 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 23:47:35,483 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_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,486 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 23:47:35,486 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b7e054c4-70eb-419f-adae-db0c78937c91/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 [2018-12-08 23:47:35,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 23:47:35,502 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 23:47:35,517 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 23:47:35,518 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 23:47:35,518 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 23:47:35,518 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 23:47:35,518 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 23:47:35,518 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 23:47:35,519 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 23:47:35,519 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 23:47:35,519 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 23:47:35,519 INFO L131 ssoRankerPreferences]: Filename of dumped script: CookSeeZuleger-TACAS2013-Fig1_true-termination_true-no-overflow.c_Iteration4_Loop [2018-12-08 23:47:35,519 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 23:47:35,519 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 23:47:35,519 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,528 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,531 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 23:47:35,573 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 23:47:35,573 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 23:47:35,574 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 [2018-12-08 23:47:35,574 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,574 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:35,574 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,575 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,575 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,575 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:35,575 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:35,576 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,576 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 [2018-12-08 23:47:35,577 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,577 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,577 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,577 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,578 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-12-08 23:47:35,578 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-12-08 23:47:35,580 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 23:47:35,580 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 [2018-12-08 23:47:35,580 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 23:47:35,580 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 23:47:35,581 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 23:47:35,581 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 23:47:35,581 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 23:47:35,581 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 23:47:35,581 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 23:47:35,583 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 23:47:35,584 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 23:47:35,584 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-12-08 23:47:35,584 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 23:47:35,584 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 23:47:35,584 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 23:47:35,585 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-12-08 23:47:35,585 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 23:47:35,593 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 23:47:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 23:47:35,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 23:47:35,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 23:47:35,602 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 [2018-12-08 23:47:35,602 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-12-08 23:47:35,608 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 11 states and 17 transitions. Complement of second has 4 states. [2018-12-08 23:47:35,608 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 [2018-12-08 23:47:35,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 23:47:35,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-12-08 23:47:35,608 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 2 letters. [2018-12-08 23:47:35,608 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2018-12-08 23:47:35,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,609 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 1 letters. Loop has 4 letters. [2018-12-08 23:47:35,609 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 23:47:35,609 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 17 transitions. [2018-12-08 23:47:35,609 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 23:47:35,609 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 23:47:35,610 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 23:47:35,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 23:47:35,610 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 23:47:35,610 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 23:47:35,610 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 23:47:35,610 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 23:47:35,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 11:47:35 BoogieIcfgContainer [2018-12-08 23:47:35,614 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 23:47:35,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 23:47:35,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 23:47:35,614 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 23:47:35,615 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 11:47:34" (3/4) ... [2018-12-08 23:47:35,617 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 23:47:35,617 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 23:47:35,617 INFO L168 Benchmark]: Toolchain (without parser) took 1682.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 962.4 MB in the beginning and 835.8 MB in the end (delta: 126.6 MB). Peak memory consumption was 271.3 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:35,618 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:35,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 121.36 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:35,619 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.14 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:35,619 INFO L168 Benchmark]: Boogie Preprocessor took 10.49 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:35,619 INFO L168 Benchmark]: RCFGBuilder took 133.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:35,620 INFO L168 Benchmark]: BuchiAutomizer took 1393.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.8 MB in the end (delta: 289.1 MB). Peak memory consumption was 289.1 MB. Max. memory is 11.5 GB. [2018-12-08 23:47:35,620 INFO L168 Benchmark]: Witness Printer took 2.75 ms. Allocated memory is still 1.2 GB. Free memory is still 835.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 23:47:35,621 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 121.36 ms. Allocated memory is still 1.0 GB. Free memory was 962.4 MB in the beginning and 951.7 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 18.14 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.49 ms. Allocated memory is still 1.0 GB. Free memory is still 950.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 133.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 945.3 MB in the beginning and 1.1 GB in the end (delta: -179.6 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1393.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 835.8 MB in the end (delta: 289.1 MB). Peak memory consumption was 289.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.75 ms. Allocated memory is still 1.2 GB. Free memory is still 835.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (0 trivial, 3 deterministic, 1 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function x and consists of 3 locations. One deterministic module has affine ranking function y and consists of 3 locations. One nondeterministic module has affine ranking function x and consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.3s and 5 iterations. TraceHistogramMax:2. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 3. Automata minimization 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 11 states and ocurred in iteration 2. Nontrivial modules had stage [3, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 27 SDtfs, 19 SDslu, 7 SDs, 0 SdLazy, 35 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax168 hnf100 lsp33 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 9 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 4 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...