./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/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 60bddbffe1e2002d3081296e00d2a4e7e030158e .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 07:06:14,362 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 07:06:14,363 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 07:06:14,370 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 07:06:14,370 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 07:06:14,371 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 07:06:14,372 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 07:06:14,373 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 07:06:14,374 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 07:06:14,375 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 07:06:14,376 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 07:06:14,376 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 07:06:14,377 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 07:06:14,378 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 07:06:14,378 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 07:06:14,379 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 07:06:14,380 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 07:06:14,381 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 07:06:14,382 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 07:06:14,384 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 07:06:14,384 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 07:06:14,385 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 07:06:14,387 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 07:06:14,387 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 07:06:14,387 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 07:06:14,388 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 07:06:14,389 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 07:06:14,390 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 07:06:14,390 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 07:06:14,391 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 07:06:14,391 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 07:06:14,392 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 07:06:14,392 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 07:06:14,392 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 07:06:14,393 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 07:06:14,393 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 07:06:14,394 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 07:06:14,405 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 07:06:14,405 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 07:06:14,406 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 07:06:14,406 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 07:06:14,406 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 07:06:14,406 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 07:06:14,407 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 07:06:14,407 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 07:06:14,408 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 07:06:14,409 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 07:06:14,409 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 07:06:14,409 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 07:06:14,409 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 07:06:14,409 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 07:06:14,409 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 07:06:14,410 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 07:06:14,410 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_bcd7ced6-538a-445d-83c2-c70001a600b6/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 -> 60bddbffe1e2002d3081296e00d2a4e7e030158e [2018-11-10 07:06:14,434 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 07:06:14,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 07:06:14,446 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 07:06:14,447 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 07:06:14,448 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 07:06:14,448 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-10 07:06:14,493 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/data/e130ad98a/1fd5c583e43c4293adc9b470f5139b84/FLAGca14e3dab [2018-11-10 07:06:14,821 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 07:06:14,822 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-10 07:06:14,827 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/data/e130ad98a/1fd5c583e43c4293adc9b470f5139b84/FLAGca14e3dab [2018-11-10 07:06:14,839 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/data/e130ad98a/1fd5c583e43c4293adc9b470f5139b84 [2018-11-10 07:06:14,842 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 07:06:14,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 07:06:14,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 07:06:14,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 07:06:14,847 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 07:06:14,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:06:14" (1/1) ... [2018-11-10 07:06:14,850 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adf90f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:14, skipping insertion in model container [2018-11-10 07:06:14,851 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 07:06:14" (1/1) ... [2018-11-10 07:06:14,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 07:06:14,873 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 07:06:14,999 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:06:15,001 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 07:06:15,011 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 07:06:15,020 INFO L193 MainTranslator]: Completed translation [2018-11-10 07:06:15,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15 WrapperNode [2018-11-10 07:06:15,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 07:06:15,021 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 07:06:15,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 07:06:15,021 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 07:06:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,039 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 07:06:15,039 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 07:06:15,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 07:06:15,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 07:06:15,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,045 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,045 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,048 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... [2018-11-10 07:06:15,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 07:06:15,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 07:06:15,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 07:06:15,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 07:06:15,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 07:06:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 07:06:15,124 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-10 07:06:15,124 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-10 07:06:15,231 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 07:06:15,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:06:15 BoogieIcfgContainer [2018-11-10 07:06:15,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 07:06:15,232 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 07:06:15,232 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 07:06:15,234 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 07:06:15,235 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:06:15,235 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 07:06:14" (1/3) ... [2018-11-10 07:06:15,235 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4da5bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:06:15, skipping insertion in model container [2018-11-10 07:06:15,235 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:06:15,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 07:06:15" (2/3) ... [2018-11-10 07:06:15,236 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4da5bdb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 07:06:15, skipping insertion in model container [2018-11-10 07:06:15,236 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 07:06:15,236 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:06:15" (3/3) ... [2018-11-10 07:06:15,237 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-termination_true-no-overflow.c [2018-11-10 07:06:15,277 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 07:06:15,278 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 07:06:15,278 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 07:06:15,278 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 07:06:15,278 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 07:06:15,278 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 07:06:15,278 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 07:06:15,278 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 07:06:15,278 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 07:06:15,287 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-10 07:06:15,305 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 07:06:15,306 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:06:15,306 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:06:15,312 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:15,312 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:15,312 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 07:06:15,312 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-11-10 07:06:15,314 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-10 07:06:15,314 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:06:15,314 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:06:15,314 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:15,314 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:15,321 INFO L793 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 19#L34true assume !(main_~n~0 <= 0); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-11-10 07:06:15,321 INFO L795 eck$LassoCheckResult]: Loop: 5#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 22#L16true assume !(~y1 <= 0 || ~y2 <= 0); 16#L19true assume !(~y1 == ~y2); 12#L22true assume ~y1 > ~y2; 3#L23true call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 5#gcdENTRYtrue [2018-11-10 07:06:15,326 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:15,326 INFO L82 PathProgramCache]: Analyzing trace with hash 28695875, now seen corresponding path program 1 times [2018-11-10 07:06:15,328 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:15,328 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:15,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,358 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:15,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:15,390 INFO L82 PathProgramCache]: Analyzing trace with hash 52613989, now seen corresponding path program 1 times [2018-11-10 07:06:15,390 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:15,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:15,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:15,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:15,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1513025379, now seen corresponding path program 1 times [2018-11-10 07:06:15,398 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:15,398 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:15,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,399 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:15,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:15,532 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:15,533 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:15,533 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:15,533 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:15,533 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:06:15,534 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,534 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:15,534 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:15,535 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:06:15,535 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:15,535 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:15,553 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,586 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,593 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,671 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:15,671 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,674 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:06:15,675 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:06:15,682 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:06:15,682 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,699 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:06:15,699 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,717 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:06:15,717 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:06:15,744 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:06:15,745 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:15,745 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:15,745 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:15,745 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:15,745 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:06:15,745 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:15,746 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:15,746 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:15,746 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-10 07:06:15,746 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:15,746 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:15,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,758 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,781 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:15,816 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:15,819 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:06:15,820 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:15,821 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:15,821 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:15,822 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:15,822 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:15,822 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:15,823 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:15,824 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:15,826 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:06:15,826 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:15,827 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:15,827 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:15,827 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:15,827 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:15,827 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:15,828 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:15,828 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:15,829 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:06:15,829 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:15,829 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:15,829 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:15,830 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:15,830 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:15,830 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:15,830 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:15,831 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:15,838 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:06:15,841 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:06:15,842 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:06:15,843 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:06:15,843 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:06:15,843 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:06:15,844 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-11-10 07:06:15,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:06:15,874 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:15,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:15,887 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:15,900 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:06:15,932 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 4 loop predicates [2018-11-10 07:06:15,933 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 5 states. [2018-11-10 07:06:16,095 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states.. Second operand 5 states. Result 94 states and 130 transitions. Complement of second has 30 states. [2018-11-10 07:06:16,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-10 07:06:16,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-10 07:06:16,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2018-11-10 07:06:16,100 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-10 07:06:16,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:16,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-10 07:06:16,101 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:16,101 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-10 07:06:16,102 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:16,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 130 transitions. [2018-11-10 07:06:16,107 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 07:06:16,111 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 36 states and 41 transitions. [2018-11-10 07:06:16,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-10 07:06:16,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-10 07:06:16,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2018-11-10 07:06:16,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:06:16,112 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-11-10 07:06:16,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2018-11-10 07:06:16,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2018-11-10 07:06:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-10 07:06:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-11-10 07:06:16,131 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-10 07:06:16,131 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-11-10 07:06:16,131 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-10 07:06:16,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-11-10 07:06:16,131 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 07:06:16,132 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:06:16,132 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:06:16,132 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-10 07:06:16,132 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:16,132 INFO L793 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 204#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 220#L34 assume !(main_~n~0 <= 0); 207#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 209#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-11-10 07:06:16,132 INFO L795 eck$LassoCheckResult]: Loop: 212#L16 assume !(~y1 <= 0 || ~y2 <= 0); 216#L19 assume !(~y1 == ~y2); 217#L22 assume !(~y1 > ~y2); 211#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 210#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-11-10 07:06:16,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:16,133 INFO L82 PathProgramCache]: Analyzing trace with hash 889572150, now seen corresponding path program 1 times [2018-11-10 07:06:16,133 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:16,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:16,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:16,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:16,139 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 1 times [2018-11-10 07:06:16,139 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:16,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:16,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:16,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,145 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:16,145 INFO L82 PathProgramCache]: Analyzing trace with hash -340850537, now seen corresponding path program 1 times [2018-11-10 07:06:16,145 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:16,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:16,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:16,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:16,234 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:16,234 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:16,234 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:16,234 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:16,234 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:06:16,234 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:16,235 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:16,235 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:16,235 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:06:16,235 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:16,235 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:16,236 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:16,250 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:16,253 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:16,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:16,323 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:16,323 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:16,326 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:06:16,326 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:16,349 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:06:16,349 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:06:17,714 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:06:17,716 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:17,716 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:17,716 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:17,716 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:17,716 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:06:17,716 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:17,716 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:17,716 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:17,717 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-10 07:06:17,717 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:17,717 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:17,718 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:17,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:17,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:17,731 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:17,809 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:17,809 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:06:17,810 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:17,811 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:17,814 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:17,814 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:17,815 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:17,815 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:17,816 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:17,816 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:17,824 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:06:17,829 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:06:17,830 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:06:17,830 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:06:17,830 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:06:17,830 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:06:17,830 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-10 07:06:17,831 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:06:17,854 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:17,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:17,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:06:17,890 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:06:17,891 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-10 07:06:17,910 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 54 states and 61 transitions. Complement of second has 11 states. [2018-11-10 07:06:17,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:06:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:06:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 07:06:17,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2018-11-10 07:06:17,912 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:17,912 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 07:06:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:17,913 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2018-11-10 07:06:17,913 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:17,913 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2018-11-10 07:06:17,915 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 07:06:17,915 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2018-11-10 07:06:17,916 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-11-10 07:06:17,916 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-10 07:06:17,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2018-11-10 07:06:17,916 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-10 07:06:17,916 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-11-10 07:06:17,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2018-11-10 07:06:17,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-11-10 07:06:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-10 07:06:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-11-10 07:06:17,919 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 07:06:17,919 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-11-10 07:06:17,919 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-10 07:06:17,919 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2018-11-10 07:06:17,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-10 07:06:17,919 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 07:06:17,919 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 07:06:17,920 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-10 07:06:17,920 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-10 07:06:17,920 INFO L793 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 337#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 338#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 355#L34 assume !(main_~n~0 <= 0); 340#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 344#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 360#L19 assume !(~y1 == ~y2); 359#L22 assume ~y1 > ~y2; 339#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 341#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-11-10 07:06:17,920 INFO L795 eck$LassoCheckResult]: Loop: 356#L16 assume !(~y1 <= 0 || ~y2 <= 0); 348#L19 assume !(~y1 == ~y2); 350#L22 assume !(~y1 > ~y2); 349#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 353#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-11-10 07:06:17,920 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:17,921 INFO L82 PathProgramCache]: Analyzing trace with hash -340853482, now seen corresponding path program 2 times [2018-11-10 07:06:17,921 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:17,921 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:17,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 07:06:17,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:17,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:17,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:17,929 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 2 times [2018-11-10 07:06:17,930 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:17,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:17,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,930 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:06:17,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:17,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:17,937 INFO L82 PathProgramCache]: Analyzing trace with hash 307888823, now seen corresponding path program 1 times [2018-11-10 07:06:17,937 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 07:06:17,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 07:06:17,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,938 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-10 07:06:17,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 07:06:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:17,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 07:06:18,002 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:18,002 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:18,002 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:18,003 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:18,003 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-10 07:06:18,003 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:18,003 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:18,003 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:18,003 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:06:18,003 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:18,003 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:18,004 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,005 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,013 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,015 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,057 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:18,057 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:18,061 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:06:18,061 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:06:18,063 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-11-10 07:06:18,063 INFO L446 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret0=0} Honda state: {gcd_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:18,080 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-10 07:06:18,080 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_bcd7ced6-538a-445d-83c2-c70001a600b6/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:18,102 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-10 07:06:18,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-10 07:06:18,567 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-10 07:06:18,569 INFO L214 LassoAnalysis]: Preferences: [2018-11-10 07:06:18,569 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-10 07:06:18,569 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-10 07:06:18,569 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-10 07:06:18,569 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-10 07:06:18,569 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-10 07:06:18,570 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-10 07:06:18,570 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-10 07:06:18,570 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-10 07:06:18,570 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-10 07:06:18,570 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-11-10 07:06:18,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,573 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,587 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,588 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-10 07:06:18,638 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-11-10 07:06:18,638 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-11-10 07:06:18,639 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:18,639 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:18,639 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:18,639 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:18,640 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:18,640 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:18,640 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:18,640 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:18,641 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-10 07:06:18,642 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-10 07:06:18,642 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-10 07:06:18,642 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-10 07:06:18,642 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-10 07:06:18,643 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-10 07:06:18,643 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-10 07:06:18,644 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-10 07:06:18,645 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-10 07:06:18,650 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-10 07:06:18,653 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-10 07:06:18,654 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-10 07:06:18,654 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-10 07:06:18,654 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-10 07:06:18,654 INFO L517 LassoAnalysis]: Proved termination. [2018-11-10 07:06:18,654 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-10 07:06:18,654 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-10 07:06:18,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:18,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,677 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,685 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:06:18,735 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:06:18,735 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 07:06:18,752 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2018-11-10 07:06:18,752 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:06:18,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:06:18,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 07:06:18,753 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 07:06:18,753 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:18,753 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:06:18,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:06:18,803 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:06:18,803 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 07:06:18,828 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 46 states and 51 transitions. Complement of second has 11 states. [2018-11-10 07:06:18,828 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:06:18,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:06:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-10 07:06:18,829 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 07:06:18,829 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:18,829 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-10 07:06:18,840 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 07:06:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,851 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 07:06:18,859 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 07:06:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 07:06:18,884 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-10 07:06:18,884 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-10 07:06:18,902 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 75 states and 86 transitions. Complement of second has 12 states. [2018-11-10 07:06:18,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-10 07:06:18,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-10 07:06:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-11-10 07:06:18,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2018-11-10 07:06:18,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:18,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2018-11-10 07:06:18,904 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:18,904 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2018-11-10 07:06:18,905 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-10 07:06:18,905 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2018-11-10 07:06:18,906 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:06:18,907 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2018-11-10 07:06:18,907 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-10 07:06:18,907 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-10 07:06:18,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-10 07:06:18,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-10 07:06:18,907 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:06:18,907 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:06:18,907 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-10 07:06:18,907 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-10 07:06:18,907 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-10 07:06:18,908 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-10 07:06:18,908 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-10 07:06:18,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 07:06:18 BoogieIcfgContainer [2018-11-10 07:06:18,912 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 07:06:18,913 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 07:06:18,913 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 07:06:18,913 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 07:06:18,913 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 07:06:15" (3/4) ... [2018-11-10 07:06:18,916 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-10 07:06:18,916 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 07:06:18,916 INFO L168 Benchmark]: Toolchain (without parser) took 4073.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 961.8 MB in the beginning and 854.9 MB in the end (delta: 106.9 MB). Peak memory consumption was 275.2 MB. Max. memory is 11.5 GB. [2018-11-10 07:06:18,917 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:06:18,918 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.80 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 950.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-11-10 07:06:18,918 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.07 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:06:18,918 INFO L168 Benchmark]: Boogie Preprocessor took 10.13 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 944.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-10 07:06:18,919 INFO L168 Benchmark]: RCFGBuilder took 182.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-11-10 07:06:18,919 INFO L168 Benchmark]: BuchiAutomizer took 3680.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 854.9 MB in the end (delta: 296.3 MB). Peak memory consumption was 296.3 MB. Max. memory is 11.5 GB. [2018-11-10 07:06:18,920 INFO L168 Benchmark]: Witness Printer took 3.23 ms. Allocated memory is still 1.2 GB. Free memory is still 854.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 07:06:18,922 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 176.80 ms. Allocated memory is still 1.0 GB. Free memory was 961.8 MB in the beginning and 950.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.07 ms. Allocated memory is still 1.0 GB. Free memory is still 950.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 10.13 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 944.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 182.23 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 944.6 MB in the beginning and 1.2 GB in the end (delta: -206.6 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3680.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 854.9 MB in the end (delta: 296.3 MB). Peak memory consumption was 296.3 MB. Max. memory is 11.5 GB. * Witness Printer took 3.23 ms. Allocated memory is still 1.2 GB. Free memory is still 854.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y1) and consists of 7 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.6s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.9s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 25 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 52 SDtfs, 81 SDslu, 9 SDs, 0 SdLazy, 122 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf91 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp89 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 6ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...