./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 aae625cda61f26fa063b78c3d3a58aff5ded8a89 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:16:06,646 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:16:06,648 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:16:06,666 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:16:06,668 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:16:06,669 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:16:06,671 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:16:06,674 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:16:06,675 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:16:06,678 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:16:06,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:16:06,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:16:06,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:16:06,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:16:06,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:16:06,686 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:16:06,687 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:16:06,688 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:16:06,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:16:06,697 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:16:06,698 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:16:06,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:16:06,702 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:16:06,702 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:16:06,702 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:16:06,703 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:16:06,708 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:16:06,709 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:16:06,712 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:16:06,713 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:16:06,713 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:16:06,714 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:16:06,714 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:16:06,714 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:16:06,716 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:16:06,718 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:16:06,719 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:16:06,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:16:06,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:16:06,752 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:16:06,752 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:16:06,752 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:16:06,752 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:16:06,752 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:16:06,753 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:16:06,753 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:16:06,753 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:16:06,753 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:16:06,753 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:16:06,753 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:16:06,757 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:16:06,758 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:16:06,760 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:16:06,760 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:16:06,760 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:16:06,760 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:16:06,761 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:16:06,761 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:16:06,761 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:16:06,762 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:16:06,762 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> aae625cda61f26fa063b78c3d3a58aff5ded8a89 [2018-11-28 23:16:06,830 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:16:06,843 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:16:06,847 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:16:06,849 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:16:06,850 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:16:06,851 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-11-28 23:16:06,912 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c618b48df/f303dc37d813432f86e1760b6cfd879b/FLAGa9dc0af88 [2018-11-28 23:16:07,416 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:16:07,417 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/GCD3_true-termination_true-no-overflow.c [2018-11-28 23:16:07,425 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c618b48df/f303dc37d813432f86e1760b6cfd879b/FLAGa9dc0af88 [2018-11-28 23:16:07,756 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c618b48df/f303dc37d813432f86e1760b6cfd879b [2018-11-28 23:16:07,759 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:16:07,761 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:16:07,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:07,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:16:07,766 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:16:07,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:07" (1/1) ... [2018-11-28 23:16:07,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a57947c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:07, skipping insertion in model container [2018-11-28 23:16:07,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:07" (1/1) ... [2018-11-28 23:16:07,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:16:07,804 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:16:07,983 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:07,988 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:16:08,008 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:08,023 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:16:08,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08 WrapperNode [2018-11-28 23:16:08,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:08,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:08,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:16:08,025 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:16:08,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,040 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,061 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:08,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:16:08,062 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:16:08,062 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:16:08,072 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,076 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,082 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... [2018-11-28 23:16:08,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:16:08,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:16:08,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:16:08,086 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:16:08,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:16:08,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:16:08,522 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:16:08,523 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-28 23:16:08,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:08 BoogieIcfgContainer [2018-11-28 23:16:08,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:16:08,524 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:16:08,524 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:16:08,530 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:16:08,531 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,531 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:16:07" (1/3) ... [2018-11-28 23:16:08,533 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a15a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:08, skipping insertion in model container [2018-11-28 23:16:08,533 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,534 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08" (2/3) ... [2018-11-28 23:16:08,535 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@33a15a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:16:08, skipping insertion in model container [2018-11-28 23:16:08,535 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,535 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:08" (3/3) ... [2018-11-28 23:16:08,542 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD3_true-termination_true-no-overflow.c [2018-11-28 23:16:08,604 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:16:08,605 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:16:08,605 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:16:08,605 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:16:08,605 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:16:08,606 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:16:08,606 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:16:08,606 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:16:08,606 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:16:08,623 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:16:08,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:16:08,648 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:08,648 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:08,657 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:08,657 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:16:08,657 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:16:08,657 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states. [2018-11-28 23:16:08,659 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:16:08,660 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:08,660 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:08,660 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:08,660 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:16:08,670 INFO L794 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 11#L13-2true [2018-11-28 23:16:08,672 INFO L796 eck$LassoCheckResult]: Loop: 11#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17true assume 0 == main_~y~0;main_~y~0 := main_~y~0; 7#L21-2true assume !(main_~xtmp~0 > 0); 5#L31-2true assume !true; 4#L31-3true main_~y~0 := main_~xtmp~0; 15#L25-1true main_~x~0 := main_~tmp~0; 11#L13-2true [2018-11-28 23:16:08,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:08,679 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:16:08,681 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:08,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:08,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:08,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:08,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1187012529, now seen corresponding path program 1 times [2018-11-28 23:16:08,787 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:08,787 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:08,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:08,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:08,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:08,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:08,867 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:16:08,872 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:16:08,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:16:08,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:16:08,894 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2018-11-28 23:16:08,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:08,963 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2018-11-28 23:16:08,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:16:08,968 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 14 states and 17 transitions. [2018-11-28 23:16:08,969 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:16:08,975 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 14 states to 10 states and 13 transitions. [2018-11-28 23:16:08,976 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:16:08,976 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:16:08,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 13 transitions. [2018-11-28 23:16:08,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:08,978 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-28 23:16:08,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 13 transitions. [2018-11-28 23:16:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2018-11-28 23:16:09,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-28 23:16:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2018-11-28 23:16:09,005 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-28 23:16:09,005 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 13 transitions. [2018-11-28 23:16:09,005 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:09,005 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 13 transitions. [2018-11-28 23:16:09,006 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 9 [2018-11-28 23:16:09,006 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:09,006 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:09,007 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:09,007 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:09,007 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 40#L13-2 [2018-11-28 23:16:09,007 INFO L796 eck$LassoCheckResult]: Loop: 40#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 41#L17 assume !(0 == main_~y~0); 37#L21 assume !(main_~y~0 < 0); 38#L21-2 assume !(main_~xtmp~0 > 0); 45#L31-2 assume !(main_~xtmp~0 < 0); 42#L31-3 main_~y~0 := main_~xtmp~0; 43#L25-1 main_~x~0 := main_~tmp~0; 40#L13-2 [2018-11-28 23:16:09,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:09,009 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 2 times [2018-11-28 23:16:09,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:09,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:09,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:09,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,023 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:09,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1817939337, now seen corresponding path program 1 times [2018-11-28 23:16:09,024 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:09,024 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:09,026 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:09,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:09,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:09,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:16:09,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:16:09,121 INFO L811 eck$LassoCheckResult]: loop already infeasible [2018-11-28 23:16:09,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:16:09,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:16:09,122 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. cyclomatic complexity: 4 Second operand 3 states. [2018-11-28 23:16:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:09,258 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2018-11-28 23:16:09,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:16:09,259 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 14 transitions. [2018-11-28 23:16:09,260 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 11 [2018-11-28 23:16:09,262 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 14 transitions. [2018-11-28 23:16:09,262 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 12 [2018-11-28 23:16:09,262 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2018-11-28 23:16:09,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 14 transitions. [2018-11-28 23:16:09,264 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:09,264 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 14 transitions. [2018-11-28 23:16:09,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 14 transitions. [2018-11-28 23:16:09,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 8. [2018-11-28 23:16:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:16:09,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 9 transitions. [2018-11-28 23:16:09,266 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-28 23:16:09,266 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 9 transitions. [2018-11-28 23:16:09,266 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:09,267 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 9 transitions. [2018-11-28 23:16:09,267 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:16:09,267 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:09,267 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:09,268 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:09,268 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:09,268 INFO L794 eck$LassoCheckResult]: Stem: 67#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 68#L13-2 [2018-11-28 23:16:09,268 INFO L796 eck$LassoCheckResult]: Loop: 68#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 69#L17 assume !(0 == main_~y~0); 65#L21 assume !(main_~y~0 < 0); 66#L21-2 assume main_~xtmp~0 > 0; 72#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 70#L26-3 main_~y~0 := main_~xtmp~0; 71#L25-1 main_~x~0 := main_~tmp~0; 68#L13-2 [2018-11-28 23:16:09,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:09,271 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 3 times [2018-11-28 23:16:09,271 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:09,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:09,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,275 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:09,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:09,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1818401082, now seen corresponding path program 1 times [2018-11-28 23:16:09,284 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:09,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:09,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,286 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:09,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:09,322 INFO L82 PathProgramCache]: Analyzing trace with hash 669111751, now seen corresponding path program 1 times [2018-11-28 23:16:09,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:09,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:09,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:09,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:09,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,497 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 15 [2018-11-28 23:16:09,601 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:09,602 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:09,603 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:09,603 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:09,603 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:09,603 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:09,603 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:09,603 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:09,604 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:09,604 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:09,604 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:09,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:09,639 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:09,643 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:09,806 WARN L180 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:16:10,023 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:10,023 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:10,033 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:10,033 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:10,064 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:10,064 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:10,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:10,071 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:10,096 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:10,096 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:10,100 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:10,101 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:10,133 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:10,133 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:15,669 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:15,672 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:15,672 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:15,672 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:15,672 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:15,672 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:15,672 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:15,673 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:15,673 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:15,673 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:15,673 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:15,673 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:15,679 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:15,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:15,719 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:15,845 WARN L180 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-28 23:16:15,932 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:15,939 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:15,941 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:15,942 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:15,943 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:15,943 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:15,943 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:15,948 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:15,948 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:15,954 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:15,955 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:15,956 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:15,956 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:15,956 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:15,956 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:15,959 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:15,959 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:15,975 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:15,976 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:15,976 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:15,980 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:15,980 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:15,981 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:15,981 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:15,985 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:15,985 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:16,018 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:16,031 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:16,031 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:16,033 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:16,034 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:16,034 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:16,034 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:16:16,036 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:16,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:16,150 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:16,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:16,178 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:16,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:16,634 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 [2018-11-28 23:16:16,635 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2 Second operand 6 states. [2018-11-28 23:16:16,790 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 9 transitions. cyclomatic complexity: 2. Second operand 6 states. Result 27 states and 32 transitions. Complement of second has 9 states. [2018-11-28 23:16:16,794 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:16,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:16:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 12 transitions. [2018-11-28 23:16:16,796 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 7 letters. [2018-11-28 23:16:16,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:16,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 8 letters. Loop has 7 letters. [2018-11-28 23:16:16,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:16,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 12 transitions. Stem has 1 letters. Loop has 14 letters. [2018-11-28 23:16:16,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:16,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-28 23:16:16,801 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-28 23:16:16,802 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 24 states and 28 transitions. [2018-11-28 23:16:16,802 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 23:16:16,804 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:16,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 28 transitions. [2018-11-28 23:16:16,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:16,805 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-28 23:16:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 28 transitions. [2018-11-28 23:16:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2018-11-28 23:16:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 23:16:16,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2018-11-28 23:16:16,809 INFO L728 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-28 23:16:16,809 INFO L608 BuchiCegarLoop]: Abstraction has 21 states and 24 transitions. [2018-11-28 23:16:16,809 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:16,810 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 21 states and 24 transitions. [2018-11-28 23:16:16,810 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:16:16,811 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:16,811 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:16,811 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 23:16:16,811 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:16,812 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 159#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 161#L17 assume !(0 == main_~y~0); 174#L21 assume !(main_~y~0 < 0); 173#L21-2 assume main_~xtmp~0 > 0; 169#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2018-11-28 23:16:16,813 INFO L796 eck$LassoCheckResult]: Loop: 170#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 170#L26-2 [2018-11-28 23:16:16,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,813 INFO L82 PathProgramCache]: Analyzing trace with hash 925834904, now seen corresponding path program 1 times [2018-11-28 23:16:16,813 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,813 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,815 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,815 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,828 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 1 times [2018-11-28 23:16:16,829 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:16,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889015, now seen corresponding path program 2 times [2018-11-28 23:16:16,834 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:16,835 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:16,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:16,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:16,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:16,998 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 19 [2018-11-28 23:16:17,008 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:17,008 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:17,008 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:17,009 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:17,009 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:17,009 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,009 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:17,010 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:17,010 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:16:17,010 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:17,010 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:17,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,022 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,048 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,141 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,144 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,271 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:17,271 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,279 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:17,280 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:17,301 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:17,301 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,307 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:17,307 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:17,312 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:17,312 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,347 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:17,347 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:17,384 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:17,555 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:17,557 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:17,557 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:17,557 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:17,557 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:17,557 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:17,558 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:17,558 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:17,558 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:17,558 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:16:17,558 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:17,558 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:17,562 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,590 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,610 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,625 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:17,746 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:17,747 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:17,747 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:17,748 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:17,748 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:17,748 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:17,749 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:17,752 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:17,752 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:17,764 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:17,765 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:17,767 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:17,767 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:17,768 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:17,768 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:17,771 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:17,771 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:17,802 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:17,821 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:17,821 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:16:17,822 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:17,824 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:16:17,824 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:17,824 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-28 23:16:17,845 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:16:18,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,101 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:18,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:18,121 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:18,121 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5 Second operand 3 states. [2018-11-28 23:16:18,214 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 21 states and 24 transitions. cyclomatic complexity: 5. Second operand 3 states. Result 25 states and 31 transitions. Complement of second has 6 states. [2018-11-28 23:16:18,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:18,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:18,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:18,215 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 23:16:18,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:18,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:16:18,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:18,216 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:16:18,216 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:18,216 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 31 transitions. [2018-11-28 23:16:18,218 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:16:18,219 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 24 states and 29 transitions. [2018-11-28 23:16:18,219 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 23:16:18,219 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2018-11-28 23:16:18,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 29 transitions. [2018-11-28 23:16:18,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:18,219 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 29 transitions. [2018-11-28 23:16:18,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 29 transitions. [2018-11-28 23:16:18,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2018-11-28 23:16:18,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:16:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2018-11-28 23:16:18,223 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-28 23:16:18,223 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 28 transitions. [2018-11-28 23:16:18,223 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:16:18,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 28 transitions. [2018-11-28 23:16:18,224 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-11-28 23:16:18,224 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:18,224 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:18,225 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:18,225 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:18,225 INFO L794 eck$LassoCheckResult]: Stem: 256#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 257#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 271#L17 assume !(0 == main_~y~0); 274#L21 assume !(main_~y~0 < 0); 273#L21-2 assume main_~xtmp~0 > 0; 272#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 270#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 262#L26-3 [2018-11-28 23:16:18,225 INFO L796 eck$LassoCheckResult]: Loop: 262#L26-3 main_~y~0 := main_~xtmp~0; 263#L25-1 main_~x~0 := main_~tmp~0; 258#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 259#L17 assume !(0 == main_~y~0); 252#L21 assume !(main_~y~0 < 0); 253#L21-2 assume main_~xtmp~0 > 0; 266#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 262#L26-3 [2018-11-28 23:16:18,225 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:18,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 1 times [2018-11-28 23:16:18,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:18,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:18,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,230 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:18,230 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:18,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:18,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:18,241 INFO L82 PathProgramCache]: Analyzing trace with hash 1776384388, now seen corresponding path program 2 times [2018-11-28 23:16:18,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:18,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:18,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:18,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:18,251 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:18,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190014, now seen corresponding path program 1 times [2018-11-28 23:16:18,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:18,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:18,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,253 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:18,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,495 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:16:18,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:16:18,495 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:16:18,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:18,516 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:18,529 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:16:18,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:16:18,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 23:16:18,615 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:18,616 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:18,616 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:18,616 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:18,616 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:18,616 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,617 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:18,617 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:18,617 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:18,617 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:18,617 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:18,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,662 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,752 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:18,753 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:16:18,764 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:18,764 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,792 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:18,792 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,797 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:18,797 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:18,829 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:26,640 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:26,643 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:26,643 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:26,643 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:26,643 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:26,643 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:26,643 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:26,643 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:26,644 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:26,644 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:26,644 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:26,644 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:26,645 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:26,656 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:26,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:26,770 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:26,770 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:26,771 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:26,771 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:26,772 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:26,772 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:26,772 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:26,774 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:26,774 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:26,783 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:26,785 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:26,787 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:26,787 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:26,787 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:26,788 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:26,788 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:26,796 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:26,796 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:26,809 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:26,817 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:26,818 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:26,819 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:26,819 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:26,819 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:26,819 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-28 23:16:26,822 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:26,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:26,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:26,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:26,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:26,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:26,939 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:16:26,939 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:16:27,008 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 28 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 58 states and 72 transitions. Complement of second has 8 states. [2018-11-28 23:16:27,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 18 transitions. [2018-11-28 23:16:27,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 7 letters. [2018-11-28 23:16:27,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:27,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 14 letters. Loop has 7 letters. [2018-11-28 23:16:27,012 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:27,012 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 18 transitions. Stem has 7 letters. Loop has 14 letters. [2018-11-28 23:16:27,013 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:27,013 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 58 states and 72 transitions. [2018-11-28 23:16:27,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-28 23:16:27,019 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 58 states to 53 states and 67 transitions. [2018-11-28 23:16:27,020 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-11-28 23:16:27,020 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 25 [2018-11-28 23:16:27,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 67 transitions. [2018-11-28 23:16:27,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:27,020 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 67 transitions. [2018-11-28 23:16:27,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 67 transitions. [2018-11-28 23:16:27,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2018-11-28 23:16:27,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 23:16:27,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2018-11-28 23:16:27,027 INFO L728 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2018-11-28 23:16:27,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:16:27,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:16:27,029 INFO L87 Difference]: Start difference. First operand 46 states and 58 transitions. Second operand 8 states. [2018-11-28 23:16:27,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:27,255 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2018-11-28 23:16:27,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:16:27,256 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 60 transitions. [2018-11-28 23:16:27,258 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-28 23:16:27,258 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 31 states and 37 transitions. [2018-11-28 23:16:27,258 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 24 [2018-11-28 23:16:27,259 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2018-11-28 23:16:27,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 37 transitions. [2018-11-28 23:16:27,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:27,260 INFO L705 BuchiCegarLoop]: Abstraction has 31 states and 37 transitions. [2018-11-28 23:16:27,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 37 transitions. [2018-11-28 23:16:27,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2018-11-28 23:16:27,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-11-28 23:16:27,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2018-11-28 23:16:27,263 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-28 23:16:27,263 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 27 transitions. [2018-11-28 23:16:27,263 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:16:27,263 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 27 transitions. [2018-11-28 23:16:27,265 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 8 [2018-11-28 23:16:27,266 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:27,266 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:27,266 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:27,266 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:27,267 INFO L794 eck$LassoCheckResult]: Stem: 559#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 560#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 576#L17 assume !(0 == main_~y~0); 575#L21 assume !(main_~y~0 < 0); 574#L21-2 assume main_~xtmp~0 > 0; 573#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 572#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 563#L26-3 [2018-11-28 23:16:27,267 INFO L796 eck$LassoCheckResult]: Loop: 563#L26-3 main_~y~0 := main_~xtmp~0; 564#L25-1 main_~x~0 := main_~tmp~0; 561#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 562#L17 assume !(0 == main_~y~0); 557#L21 assume !(main_~y~0 < 0); 558#L21-2 assume main_~xtmp~0 > 0; 565#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 566#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 563#L26-3 [2018-11-28 23:16:27,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:27,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1363889017, now seen corresponding path program 2 times [2018-11-28 23:16:27,267 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:27,267 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:27,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:27,281 INFO L82 PathProgramCache]: Analyzing trace with hash -766658727, now seen corresponding path program 1 times [2018-11-28 23:16:27,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:27,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:27,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,283 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:27,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,293 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:27,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1189119455, now seen corresponding path program 2 times [2018-11-28 23:16:27,293 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:27,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:27,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:27,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:27,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:27,407 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:27,408 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:27,408 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:27,408 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:27,408 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:27,408 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:27,409 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:27,409 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:27,409 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:16:27,409 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:27,409 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:27,410 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:27,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:27,428 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:27,502 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:27,502 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:27,514 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:27,514 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:27,543 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:27,543 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:34,295 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:34,299 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:34,299 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:34,299 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:34,299 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:34,299 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:34,299 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:34,300 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:34,300 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:34,300 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:16:34,300 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:34,300 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:34,301 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,319 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,389 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:34,390 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:34,391 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:34,391 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:34,392 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:34,392 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:34,392 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:34,392 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:34,393 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:34,393 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:34,398 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:34,401 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:34,401 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:34,401 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:34,401 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:34,402 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:34,402 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~xtmp~0) = 1*ULTIMATE.start_main_~xtmp~0 Supporting invariants [] [2018-11-28 23:16:34,402 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:34,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:34,437 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:34,445 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:34,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:16:34,577 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:16:34,577 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:16:34,769 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 54 transitions. Complement of second has 6 states. [2018-11-28 23:16:34,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:34,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:34,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2018-11-28 23:16:34,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-28 23:16:34,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:34,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 8 letters. [2018-11-28 23:16:34,771 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:34,771 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 7 letters. Loop has 16 letters. [2018-11-28 23:16:34,773 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:34,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 54 transitions. [2018-11-28 23:16:34,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:34,778 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 37 states and 45 transitions. [2018-11-28 23:16:34,778 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 19 [2018-11-28 23:16:34,779 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-11-28 23:16:34,779 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 45 transitions. [2018-11-28 23:16:34,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:34,779 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 45 transitions. [2018-11-28 23:16:34,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 45 transitions. [2018-11-28 23:16:34,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2018-11-28 23:16:34,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 23:16:34,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2018-11-28 23:16:34,782 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-28 23:16:34,782 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 34 transitions. [2018-11-28 23:16:34,782 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:16:34,782 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 34 transitions. [2018-11-28 23:16:34,785 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:34,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:34,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:34,786 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2018-11-28 23:16:34,786 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:34,786 INFO L794 eck$LassoCheckResult]: Stem: 699#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 700#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 718#L17 assume !(0 == main_~y~0); 717#L21 assume !(main_~y~0 < 0); 716#L21-2 assume main_~xtmp~0 > 0; 715#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 713#L26-2 assume !(main_~xtmp~0 >= main_~y~0); 712#L26-3 main_~y~0 := main_~xtmp~0; 708#L25-1 main_~x~0 := main_~tmp~0; 701#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 702#L17 assume !(0 == main_~y~0); 695#L21 assume !(main_~y~0 < 0); 696#L21-2 assume main_~xtmp~0 > 0; 709#L26-2 [2018-11-28 23:16:34,786 INFO L796 eck$LassoCheckResult]: Loop: 709#L26-2 assume !!(main_~xtmp~0 >= main_~y~0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 709#L26-2 [2018-11-28 23:16:34,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:34,786 INFO L82 PathProgramCache]: Analyzing trace with hash -521667071, now seen corresponding path program 3 times [2018-11-28 23:16:34,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:34,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:34,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:34,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,800 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:34,801 INFO L82 PathProgramCache]: Analyzing trace with hash 64, now seen corresponding path program 2 times [2018-11-28 23:16:34,801 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:34,801 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:34,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,803 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:34,803 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:34,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1008190016, now seen corresponding path program 4 times [2018-11-28 23:16:34,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:34,808 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,810 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:34,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:34,950 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:34,950 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:34,950 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:34,950 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:34,950 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:34,950 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:34,951 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:34,951 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:34,951 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-28 23:16:34,951 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:34,951 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:34,953 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,964 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,980 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,983 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,985 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:34,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,077 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:35,077 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:35,084 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:35,085 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:35,092 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:35,092 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:35,112 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:35,113 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:35,141 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:35,141 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:35,290 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:35,292 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:35,292 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:35,292 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:35,293 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:35,293 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:35,293 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:35,293 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:35,293 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:35,293 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD3_true-termination_true-no-overflow.c_Iteration7_Lasso [2018-11-28 23:16:35,293 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:35,293 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:35,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,302 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,304 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,308 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,313 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:35,400 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:35,401 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:35,401 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,402 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,402 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:35,402 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,403 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,403 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,403 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:35,403 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:35,406 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:35,406 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,407 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,407 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:35,407 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,407 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,407 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,408 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:35,408 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:35,408 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:35,412 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,413 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,413 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,413 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,413 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,414 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:35,414 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:35,420 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:35,420 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,421 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,421 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:35,421 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,422 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,422 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,422 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:35,422 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:35,426 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:35,426 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,427 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,427 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,427 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,427 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,429 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:35,429 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:35,439 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:35,439 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:16:35,440 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:35,440 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:35,443 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:35,443 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:35,445 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:35,445 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:35,466 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:35,485 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:35,485 INFO L444 ModelExtractionUtils]: 10 out of 16 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:16:35,485 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:35,486 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:16:35,487 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:35,487 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~xtmp~0) = -2*ULTIMATE.start_main_~y~0 + 2*ULTIMATE.start_main_~xtmp~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y~0 - 1 >= 0] [2018-11-28 23:16:35,513 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:16:35,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,608 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:35,625 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:35,626 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-28 23:16:35,688 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2018-11-28 23:16:35,690 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:35,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:16:35,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-28 23:16:35,691 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:35,691 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:35,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,718 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,729 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:35,730 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:35,730 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-28 23:16:35,762 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 30 states and 37 transitions. Complement of second has 6 states. [2018-11-28 23:16:35,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:35,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:35,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:16:35,765 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-28 23:16:35,765 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:35,765 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:35,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:35,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:35,811 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:35,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:16:35,811 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:16:35,812 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9 Second operand 3 states. [2018-11-28 23:16:35,856 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 34 transitions. cyclomatic complexity: 9. Second operand 3 states. Result 32 states and 39 transitions. Complement of second has 5 states. [2018-11-28 23:16:35,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:35,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:16:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:16:35,860 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 1 letters. [2018-11-28 23:16:35,860 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:35,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 14 letters. Loop has 1 letters. [2018-11-28 23:16:35,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:35,861 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 13 letters. Loop has 2 letters. [2018-11-28 23:16:35,861 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:35,861 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2018-11-28 23:16:35,862 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:35,862 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 0 states and 0 transitions. [2018-11-28 23:16:35,866 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:35,866 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:35,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:35,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:35,866 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:35,866 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:35,867 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:35,868 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 23:16:35,868 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:35,868 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:35,868 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:35,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:35 BoogieIcfgContainer [2018-11-28 23:16:35,875 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:35,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:35,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:35,876 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:35,876 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:08" (3/4) ... [2018-11-28 23:16:35,880 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:35,880 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:35,881 INFO L168 Benchmark]: Toolchain (without parser) took 28121.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 201.9 MB). Free memory was 948.7 MB in the beginning and 1.0 GB in the end (delta: -62.8 MB). Peak memory consumption was 139.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:35,882 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:35,883 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:35,884 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.73 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:35,884 INFO L168 Benchmark]: Boogie Preprocessor took 23.70 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:35,886 INFO L168 Benchmark]: RCFGBuilder took 438.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:35,887 INFO L168 Benchmark]: BuchiAutomizer took 27350.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 165.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:35,889 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:35,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 262.04 ms. Allocated memory is still 1.0 GB. Free memory was 948.7 MB in the beginning and 937.9 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 36.73 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.70 ms. Allocated memory is still 1.0 GB. Free memory is still 937.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 438.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 937.9 MB in the beginning and 1.1 GB in the end (delta: -164.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 27350.79 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 73.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 91.1 MB). Peak memory consumption was 165.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 8 terminating modules (3 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function -2 * y + 2 * xtmp + 1 and consists of 4 locations. One deterministic module has affine ranking function xtmp and consists of 5 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function -2 * y + 2 * xtmp + 1 and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 27.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 24.6s. Construction of modules took 0.5s. Büchi inclusion checks took 1.8s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 32 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 28 states and ocurred in iteration 6. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 56 SDtfs, 93 SDslu, 16 SDs, 0 SdLazy, 185 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time LassoAnalysisResults: nont0 unkn0 SFLI2 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso2 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf96 lsp64 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq174 hnf90 smp100 dnf100 smp100 tf103 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 14ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 20.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...