./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_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:20,086 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:09:20,087 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:09:20,096 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:09:20,096 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:09:20,097 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:09:20,098 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:09:20,099 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:09:20,101 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:09:20,101 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:09:20,102 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:09:20,102 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:09:20,103 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:09:20,104 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:09:20,105 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:09:20,105 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:09:20,106 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:09:20,107 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:09:20,109 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:09:20,110 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:09:20,111 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:09:20,112 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:09:20,113 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:09:20,114 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:09:20,114 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:09:20,115 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:09:20,116 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:09:20,117 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:09:20,117 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:09:20,118 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:09:20,118 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:09:20,118 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:09:20,119 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:09:20,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:09:20,119 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:09:20,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:09:20,120 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:09:20,131 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:09:20,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:09:20,133 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:09:20,133 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:09:20,133 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:09:20,133 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:09:20,133 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:09:20,133 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:09:20,133 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:09:20,134 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:09:20,134 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:09:20,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:09:20,134 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:09:20,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:09:20,135 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:09:20,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:09:20,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:09:20,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:09:20,137 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:09:20,137 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:09:20,137 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:09:20,137 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:09:20,138 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:09:20,138 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_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:20,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:09:20,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:09:20,176 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:09:20,177 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:09:20,177 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:09:20,178 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/../../sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-10-27 06:09:20,223 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/data/167c14ee8/41c5f85a8465491fbba439740b5a50de/FLAG7239ca264 [2018-10-27 06:09:20,558 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:09:20,559 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/sv-benchmarks/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-10-27 06:09:20,565 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/data/167c14ee8/41c5f85a8465491fbba439740b5a50de/FLAG7239ca264 [2018-10-27 06:09:20,575 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/bin-2019/uautomizer/data/167c14ee8/41c5f85a8465491fbba439740b5a50de [2018-10-27 06:09:20,577 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:09:20,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:09:20,579 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:20,579 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:09:20,583 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:09:20,583 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14956367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20, skipping insertion in model container [2018-10-27 06:09:20,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,594 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:09:20,607 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:09:20,714 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:20,716 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:09:20,728 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:09:20,736 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:09:20,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20 WrapperNode [2018-10-27 06:09:20,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:09:20,737 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:20,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:09:20,738 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:09:20,745 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,750 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:09:20,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:09:20,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:09:20,765 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:09:20,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,779 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... [2018-10-27 06:09:20,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:09:20,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:09:20,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:09:20,781 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:09:20,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:09:20,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:09:20,894 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-10-27 06:09:20,895 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-10-27 06:09:21,285 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:09:21,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:21 BoogieIcfgContainer [2018-10-27 06:09:21,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:09:21,287 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:09:21,287 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:09:21,291 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:09:21,292 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:21,292 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:09:20" (1/3) ... [2018-10-27 06:09:21,293 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400fd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:21, skipping insertion in model container [2018-10-27 06:09:21,293 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:21,293 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:09:20" (2/3) ... [2018-10-27 06:09:21,293 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@400fd507 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:09:21, skipping insertion in model container [2018-10-27 06:09:21,294 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:09:21,294 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:21" (3/3) ... [2018-10-27 06:09:21,297 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-termination_true-no-overflow.c [2018-10-27 06:09:21,348 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:09:21,349 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:09:21,349 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:09:21,349 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:09:21,349 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:09:21,349 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:09:21,349 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:09:21,349 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:09:21,349 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:09:21,363 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-10-27 06:09:21,389 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:21,390 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:21,390 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:21,403 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:21,404 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:21,404 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:09:21,404 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states. [2018-10-27 06:09:21,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-10-27 06:09:21,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:21,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:21,408 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:21,408 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:21,416 INFO L793 eck$LassoCheckResult]: Stem: 15#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 14#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 19#L34true assume !(main_~n~0 <= 0); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-10-27 06:09:21,418 INFO L795 eck$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 [2018-10-27 06:09:21,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:21,424 INFO L82 PathProgramCache]: Analyzing trace with hash 28695875, now seen corresponding path program 1 times [2018-10-27 06:09:21,426 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:21,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:21,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,468 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:21,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:21,521 INFO L82 PathProgramCache]: Analyzing trace with hash 52613989, now seen corresponding path program 1 times [2018-10-27 06:09:21,521 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:21,521 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:21,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:21,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:21,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1513025379, now seen corresponding path program 1 times [2018-10-27 06:09:21,536 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:21,536 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:21,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:21,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:21,741 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-10-27 06:09:21,808 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:21,808 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:21,809 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:21,809 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:21,809 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:21,809 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:21,809 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:21,809 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:21,809 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:09:21,809 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:21,810 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:21,823 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:21,828 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:21,855 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:21,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:21,864 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:21,866 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,109 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:22,109 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:22,113 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:22,113 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:22,119 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:22,119 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_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:22,137 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:22,138 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:22,159 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:22,160 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:22,200 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:22,202 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:22,202 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:22,202 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:22,202 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:22,202 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:22,202 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:22,202 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:22,202 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:22,203 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-10-27 06:09:22,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:22,203 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:22,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,219 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,230 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,281 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,282 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,287 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:22,412 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:22,416 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:22,417 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 [2018-10-27 06:09:22,418 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:22,418 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:22,419 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:22,419 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:22,419 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:22,421 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:22,421 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:22,425 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:22,425 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 [2018-10-27 06:09:22,426 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:22,426 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:22,426 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:22,426 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:22,427 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:22,427 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:22,427 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:22,428 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:22,429 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 [2018-10-27 06:09:22,429 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:22,429 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:22,429 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:22,430 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:22,430 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:22,431 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:22,431 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:22,438 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:22,443 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:22,444 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:22,445 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:22,445 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:22,446 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:22,446 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-10-27 06:09:22,447 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:22,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:22,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:22,498 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:22,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:22,818 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 [2018-10-27 06:09:22,819 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states. Second operand 5 states. [2018-10-27 06:09:23,363 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. [2018-10-27 06:09:23,365 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 [2018-10-27 06:09:23,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:09:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 25 transitions. [2018-10-27 06:09:23,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 5 letters. [2018-10-27 06:09:23,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:23,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 10 letters. Loop has 5 letters. [2018-10-27 06:09:23,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:23,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 25 transitions. Stem has 5 letters. Loop has 10 letters. [2018-10-27 06:09:23,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:23,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 94 states and 130 transitions. [2018-10-27 06:09:23,379 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:23,383 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 94 states to 36 states and 41 transitions. [2018-10-27 06:09:23,385 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-10-27 06:09:23,385 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-10-27 06:09:23,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 41 transitions. [2018-10-27 06:09:23,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:23,387 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 41 transitions. [2018-10-27 06:09:23,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 41 transitions. [2018-10-27 06:09:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 18. [2018-10-27 06:09:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-10-27 06:09:23,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2018-10-27 06:09:23,409 INFO L728 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-10-27 06:09:23,409 INFO L608 BuchiCegarLoop]: Abstraction has 18 states and 21 transitions. [2018-10-27 06:09:23,410 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:09:23,410 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 21 transitions. [2018-10-27 06:09:23,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:23,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:23,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:23,411 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-10-27 06:09:23,411 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:23,411 INFO L793 eck$LassoCheckResult]: Stem: 215#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 203#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 204#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 220#L34 assume !(main_~n~0 <= 0); 207#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 209#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 212#L16 [2018-10-27 06:09:23,411 INFO L795 eck$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 [2018-10-27 06:09:23,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash 889572150, now seen corresponding path program 1 times [2018-10-27 06:09:23,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:23,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:23,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:23,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,420 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:23,420 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 1 times [2018-10-27 06:09:23,420 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:23,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:23,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,421 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:23,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash -340850537, now seen corresponding path program 1 times [2018-10-27 06:09:23,430 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:23,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:23,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:23,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:23,573 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:23,573 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:23,573 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:23,573 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:23,573 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:23,573 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:23,573 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:23,574 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:23,574 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:23,574 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:23,574 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:23,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:23,637 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:23,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:23,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:23,766 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:23,767 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:23,770 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:23,771 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:23,795 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:23,795 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:25,131 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:25,132 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:25,133 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:25,133 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:25,133 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:25,133 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:25,133 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:25,133 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:25,133 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:25,133 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-10-27 06:09:25,134 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:25,134 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:25,135 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,152 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,271 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:25,272 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:25,272 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 [2018-10-27 06:09:25,273 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:25,273 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:25,273 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:25,273 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:25,273 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:25,274 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:25,274 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:25,281 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:25,288 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:25,288 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:25,288 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:25,289 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:25,289 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:25,290 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-10-27 06:09:25,290 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:25,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:25,325 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:25,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:25,345 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:25,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:25,369 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 [2018-10-27 06:09:25,370 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 21 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-10-27 06:09:25,397 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. [2018-10-27 06:09:25,399 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 [2018-10-27 06:09:25,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:25,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-10-27 06:09:25,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 5 letters. [2018-10-27 06:09:25,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:25,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-10-27 06:09:25,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:25,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 6 letters. Loop has 10 letters. [2018-10-27 06:09:25,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:25,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 61 transitions. [2018-10-27 06:09:25,403 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:25,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 33 states and 37 transitions. [2018-10-27 06:09:25,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2018-10-27 06:09:25,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-10-27 06:09:25,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 37 transitions. [2018-10-27 06:09:25,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-10-27 06:09:25,405 INFO L705 BuchiCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-10-27 06:09:25,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states and 37 transitions. [2018-10-27 06:09:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-10-27 06:09:25,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-27 06:09:25,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-10-27 06:09:25,409 INFO L728 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-10-27 06:09:25,409 INFO L608 BuchiCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-10-27 06:09:25,409 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-10-27 06:09:25,409 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 25 states and 28 transitions. [2018-10-27 06:09:25,410 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-10-27 06:09:25,410 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:09:25,410 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:09:25,411 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 06:09:25,411 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-10-27 06:09:25,411 INFO L793 eck$LassoCheckResult]: Stem: 347#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 337#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 338#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 355#L34 assume !(main_~n~0 <= 0); 340#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 344#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 360#L19 assume !(~y1 == ~y2); 359#L22 assume ~y1 > ~y2; 339#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 341#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 356#L16 [2018-10-27 06:09:25,411 INFO L795 eck$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 [2018-10-27 06:09:25,411 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:25,412 INFO L82 PathProgramCache]: Analyzing trace with hash -340853482, now seen corresponding path program 2 times [2018-10-27 06:09:25,412 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:25,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:25,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:09:25,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:25,432 INFO L82 PathProgramCache]: Analyzing trace with hash 56433324, now seen corresponding path program 2 times [2018-10-27 06:09:25,432 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:25,432 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,433 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:25,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,441 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:25,441 INFO L82 PathProgramCache]: Analyzing trace with hash 307888823, now seen corresponding path program 1 times [2018-10-27 06:09:25,441 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:09:25,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:09:25,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,442 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:09:25,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:09:25,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:09:25,568 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:25,568 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:25,568 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:25,568 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:25,569 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-10-27 06:09:25,569 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:25,569 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:25,569 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:25,569 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:25,569 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:25,569 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:25,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,583 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:25,631 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:25,631 INFO L410 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:25,634 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:25,634 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:25,636 INFO L443 LassoAnalysis]: Proved nontermination for one component. [2018-10-27 06:09:25,637 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_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:25,667 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-10-27 06:09:25,667 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2f63dd06-9de5-45bc-803f-1a246ea229ec/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 [2018-10-27 06:09:25,690 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-10-27 06:09:25,690 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-10-27 06:09:26,141 INFO L450 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-10-27 06:09:26,143 INFO L214 LassoAnalysis]: Preferences: [2018-10-27 06:09:26,143 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-10-27 06:09:26,144 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-10-27 06:09:26,144 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-10-27 06:09:26,144 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-10-27 06:09:26,144 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-10-27 06:09:26,144 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-10-27 06:09:26,144 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-10-27 06:09:26,144 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-10-27 06:09:26,144 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-10-27 06:09:26,144 INFO L280 LassoAnalysis]: Starting lasso preprocessing... [2018-10-27 06:09:26,145 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:26,164 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:26,174 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:26,176 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-10-27 06:09:26,252 INFO L298 LassoAnalysis]: Preprocessing complete. [2018-10-27 06:09:26,252 INFO L496 LassoAnalysis]: Using template 'affine'. [2018-10-27 06:09:26,252 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 [2018-10-27 06:09:26,253 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:26,253 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:26,253 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:26,253 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:26,254 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:26,254 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:26,254 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:26,255 INFO L529 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-10-27 06:09:26,256 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-10-27 06:09:26,256 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-10-27 06:09:26,256 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-10-27 06:09:26,256 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-10-27 06:09:26,257 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-10-27 06:09:26,257 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-10-27 06:09:26,258 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-10-27 06:09:26,258 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-10-27 06:09:26,265 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-10-27 06:09:26,269 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-10-27 06:09:26,270 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-10-27 06:09:26,270 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-10-27 06:09:26,270 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-10-27 06:09:26,271 INFO L517 LassoAnalysis]: Proved termination. [2018-10-27 06:09:26,271 INFO L519 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-10-27 06:09:26,272 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-10-27 06:09:26,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,392 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:26,514 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 [2018-10-27 06:09:26,514 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:09:26,549 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. [2018-10-27 06:09:26,551 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 [2018-10-27 06:09:26,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:26,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-10-27 06:09:26,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-10-27 06:09:26,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:26,552 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:09:26,561 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,587 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:26,607 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 [2018-10-27 06:09:26,607 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:09:26,630 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. [2018-10-27 06:09:26,632 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 [2018-10-27 06:09:26,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:26,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-10-27 06:09:26,632 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 11 letters. Loop has 5 letters. [2018-10-27 06:09:26,633 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:26,633 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-10-27 06:09:26,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:09:26,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,660 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:09:26,670 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 06:09:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:09:26,696 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 [2018-10-27 06:09:26,697 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 25 states and 28 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-10-27 06:09:26,720 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. [2018-10-27 06:09:26,723 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 [2018-10-27 06:09:26,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-10-27 06:09:26,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 19 transitions. [2018-10-27 06:09:26,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 5 letters. [2018-10-27 06:09:26,724 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:26,724 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 16 letters. Loop has 5 letters. [2018-10-27 06:09:26,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:26,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 19 transitions. Stem has 11 letters. Loop has 10 letters. [2018-10-27 06:09:26,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-10-27 06:09:26,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 75 states and 86 transitions. [2018-10-27 06:09:26,729 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:26,729 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 75 states to 0 states and 0 transitions. [2018-10-27 06:09:26,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-10-27 06:09:26,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-10-27 06:09:26,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-10-27 06:09:26,730 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:09:26,730 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:26,730 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:26,730 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-27 06:09:26,730 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-10-27 06:09:26,730 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-10-27 06:09:26,730 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-10-27 06:09:26,730 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-10-27 06:09:26,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:09:26 BoogieIcfgContainer [2018-10-27 06:09:26,739 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:09:26,739 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:09:26,739 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:09:26,740 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:09:26,740 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:09:21" (3/4) ... [2018-10-27 06:09:26,744 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-10-27 06:09:26,745 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:09:26,745 INFO L168 Benchmark]: Toolchain (without parser) took 6167.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 960.7 MB in the beginning and 1.1 GB in the end (delta: -137.7 MB). Peak memory consumption was 13.3 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:26,747 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:26,747 INFO L168 Benchmark]: CACSL2BoogieTranslator took 157.94 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:26,748 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.88 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. [2018-10-27 06:09:26,748 INFO L168 Benchmark]: Boogie Preprocessor took 15.44 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:26,750 INFO L168 Benchmark]: RCFGBuilder took 505.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:26,750 INFO L168 Benchmark]: BuchiAutomizer took 5452.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:09:26,751 INFO L168 Benchmark]: Witness Printer took 5.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:09:26,753 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 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 157.94 ms. Allocated memory is still 1.0 GB. Free memory was 960.7 MB in the beginning and 950.0 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 26.88 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 15.44 ms. Allocated memory is still 1.0 GB. Free memory was 950.0 MB in the beginning and 947.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 505.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 151.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 5452.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 11.5 GB. * Witness Printer took 5.44 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 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 5.4s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 3.8s. Construction of modules took 0.2s. Büchi inclusion checks took 1.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 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, 0.2s 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: 8ms 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...