./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-numeric/gcd01_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-numeric/gcd01_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 60bddbffe1e2002d3081296e00d2a4e7e030158e ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:15:51,757 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:51,759 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:51,773 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:51,774 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:51,775 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:51,776 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:51,779 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:51,781 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:51,781 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:51,782 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:51,783 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:51,784 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:51,785 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:51,787 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:51,787 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:51,789 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:51,790 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:51,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:51,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:51,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:51,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:51,799 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:51,800 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:51,800 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:51,801 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:51,802 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:51,803 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:51,804 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:51,805 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:51,806 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:51,807 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:51,807 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:51,807 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:51,808 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:51,809 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:51,810 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:51,826 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:51,827 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:51,828 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:51,828 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:51,828 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:51,828 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:51,829 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:51,829 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:51,830 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:51,830 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:51,830 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:51,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:51,830 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:51,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:51,831 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:51,833 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:51,833 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:51,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:51,834 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:51,834 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:51,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:51,834 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:51,834 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:51,836 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:51,836 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 -> 60bddbffe1e2002d3081296e00d2a4e7e030158e [2018-11-28 23:15:51,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:51,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:51,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:51,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:51,892 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:51,894 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-28 23:15:51,952 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287844517/aa2e116efc2b44559c38762ffd3ca657/FLAGb24ae1780 [2018-11-28 23:15:52,388 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:52,388 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/gcd01_true-termination_true-no-overflow.c [2018-11-28 23:15:52,396 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287844517/aa2e116efc2b44559c38762ffd3ca657/FLAGb24ae1780 [2018-11-28 23:15:52,749 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/287844517/aa2e116efc2b44559c38762ffd3ca657 [2018-11-28 23:15:52,752 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:52,754 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:52,755 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:52,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:52,758 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:52,759 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:52" (1/1) ... [2018-11-28 23:15:52,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7ff94c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:52, skipping insertion in model container [2018-11-28 23:15:52,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:52" (1/1) ... [2018-11-28 23:15:52,773 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:52,792 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:52,995 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:53,000 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:53,019 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:53,035 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:53,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53 WrapperNode [2018-11-28 23:15:53,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:53,036 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:53,036 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:53,036 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:53,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:53,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:53,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:53,073 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:53,083 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,087 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (1/1) ... [2018-11-28 23:15:53,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:53,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:53,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:53,094 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:53,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (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 23:15:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2018-11-28 23:15:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2018-11-28 23:15:53,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:53,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:53,551 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:53,551 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-11-28 23:15:53,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:53 BoogieIcfgContainer [2018-11-28 23:15:53,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:53,552 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:53,552 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:53,556 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:53,557 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:53,557 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:52" (1/3) ... [2018-11-28 23:15:53,558 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f1d3eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:53, skipping insertion in model container [2018-11-28 23:15:53,558 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:53,558 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:53" (2/3) ... [2018-11-28 23:15:53,559 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3f1d3eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:53, skipping insertion in model container [2018-11-28 23:15:53,559 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:53,559 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:53" (3/3) ... [2018-11-28 23:15:53,561 INFO L375 chiAutomizerObserver]: Analyzing ICFG gcd01_true-termination_true-no-overflow.c [2018-11-28 23:15:53,620 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:53,620 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:53,621 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:53,621 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:53,621 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:53,621 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:53,621 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:53,621 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:53,621 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:53,639 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-28 23:15:53,669 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:15:53,669 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:53,669 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:53,679 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:53,679 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:15:53,680 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:53,680 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20 states. [2018-11-28 23:15:53,682 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:15:53,683 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:53,683 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:53,683 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:53,684 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:15:53,693 INFO L794 eck$LassoCheckResult]: Stem: 14#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 10#L30true assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 18#L34true assume !(main_~n~0 <= 0); 4#L37true call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 5#gcdENTRYtrue [2018-11-28 23:15:53,693 INFO L796 eck$LassoCheckResult]: Loop: 5#gcdENTRYtrue ~y1 := #in~y1;~y2 := #in~y2; 21#L16true assume !(~y1 <= 0 || ~y2 <= 0); 15#L19true assume !(~y1 == ~y2); 12#L22true assume ~y1 > ~y2; 3#L23true call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 5#gcdENTRYtrue [2018-11-28 23:15:53,700 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:53,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1513559, now seen corresponding path program 1 times [2018-11-28 23:15:53,702 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:53,703 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:53,758 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:53,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:53,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:53,828 INFO L82 PathProgramCache]: Analyzing trace with hash 28756386, now seen corresponding path program 1 times [2018-11-28 23:15:53,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:53,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:53,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:53,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:53,866 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:53,866 INFO L82 PathProgramCache]: Analyzing trace with hash -15763700, now seen corresponding path program 1 times [2018-11-28 23:15:53,866 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:53,866 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:53,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:53,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:53,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:54,039 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 18 [2018-11-28 23:15:54,200 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:54,201 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:54,201 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:54,201 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:54,202 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:54,202 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:54,202 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:54,202 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:54,202 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:54,203 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:54,203 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:54,231 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 23:15:54,261 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 23:15:54,315 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 23:15:54,332 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 23:15:54,339 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 23:15:54,349 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 23:15:54,601 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:54,602 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) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:54,607 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:54,607 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:54,618 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:54,618 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#res=0} Honda state: {gcd_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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 23:15:54,645 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:54,645 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:54,671 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:54,671 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:54,716 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:54,718 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:54,718 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:54,718 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:54,718 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:54,719 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:54,719 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:54,719 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:54,719 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:54,719 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:54,719 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:54,719 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:54,721 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 23:15:54,740 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 23:15:54,749 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:54,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:54,786 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 23:15:54,788 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 23:15:54,918 WARN L180 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:54,950 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:54,957 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:54,959 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:54,961 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:54,961 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:54,963 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:54,963 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:54,963 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:54,966 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:54,966 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:54,971 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:54,971 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 23:15:54,972 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:54,972 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:54,973 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:54,974 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:54,974 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:54,975 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:54,975 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:54,977 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:54,977 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 23:15:54,979 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:54,979 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:54,979 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:54,980 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:54,980 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:54,981 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:54,982 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:54,993 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:55,002 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:55,003 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:55,005 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:55,005 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:55,006 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:55,006 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_#in~y1) = 1*gcd_#in~y1 Supporting invariants [] [2018-11-28 23:15:55,008 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:55,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:55,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:55,368 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:55,408 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:55,481 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 23:15:55,497 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 23:15:55,499 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 20 states. Second operand 5 states. [2018-11-28 23:15:56,497 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 20 states.. Second operand 5 states. Result 93 states and 129 transitions. Complement of second has 30 states. [2018-11-28 23:15:56,499 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 7 states 1 stem states 5 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:56,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-11-28 23:15:56,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 24 transitions. [2018-11-28 23:15:56,507 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 5 letters. [2018-11-28 23:15:56,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:56,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 9 letters. Loop has 5 letters. [2018-11-28 23:15:56,511 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:56,511 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 7 states and 24 transitions. Stem has 4 letters. Loop has 10 letters. [2018-11-28 23:15:56,512 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:56,514 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 93 states and 129 transitions. [2018-11-28 23:15:56,535 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:15:56,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 93 states to 35 states and 40 transitions. [2018-11-28 23:15:56,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 16 [2018-11-28 23:15:56,549 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 18 [2018-11-28 23:15:56,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 40 transitions. [2018-11-28 23:15:56,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:56,552 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-11-28 23:15:56,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 40 transitions. [2018-11-28 23:15:56,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 17. [2018-11-28 23:15:56,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:15:56,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2018-11-28 23:15:56,595 INFO L728 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 23:15:56,595 INFO L608 BuchiCegarLoop]: Abstraction has 17 states and 20 transitions. [2018-11-28 23:15:56,596 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:56,596 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 17 states and 20 transitions. [2018-11-28 23:15:56,597 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:15:56,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:56,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:56,597 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2018-11-28 23:15:56,597 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:15:56,598 INFO L794 eck$LassoCheckResult]: Stem: 208#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 209#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 214#L34 assume !(main_~n~0 <= 0); 200#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 202#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2018-11-28 23:15:56,598 INFO L796 eck$LassoCheckResult]: Loop: 205#L16 assume !(~y1 <= 0 || ~y2 <= 0); 210#L19 assume !(~y1 == ~y2); 211#L22 assume !(~y1 > ~y2); 204#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 203#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 205#L16 [2018-11-28 23:15:56,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:56,598 INFO L82 PathProgramCache]: Analyzing trace with hash 46920329, now seen corresponding path program 1 times [2018-11-28 23:15:56,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:56,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:56,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,603 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:56,603 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:56,622 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 1 times [2018-11-28 23:15:56,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:56,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:56,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:56,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:56,647 INFO L82 PathProgramCache]: Analyzing trace with hash -488671755, now seen corresponding path program 1 times [2018-11-28 23:15:56,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:56,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:56,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:56,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:56,869 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:56,870 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:56,870 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:56,870 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:56,870 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:56,871 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:56,871 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:56,871 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:56,871 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:56,872 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:56,872 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:56,873 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 23:15:56,895 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 23:15:56,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:56,901 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 23:15:57,010 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-28 23:15:57,048 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:57,048 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:15:57,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:57,054 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:57,082 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:57,082 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:02,126 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:02,129 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,129 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,129 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,129 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,129 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:02,130 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,130 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,130 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,130 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:02,130 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,130 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,133 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 23:16:02,168 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 23:16:02,172 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 23:16:02,179 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 23:16:02,310 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-28 23:16:02,379 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,379 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:02,380 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 23:16:02,381 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:02,381 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:02,381 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:02,381 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:02,382 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:02,383 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:02,383 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:02,395 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:02,402 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:02,403 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:02,403 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:02,403 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:02,404 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:02,404 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-28 23:16:02,404 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:02,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,451 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:02,474 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:02,535 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 23:16:02,535 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 23:16:02,535 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-28 23:16:02,601 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 17 states and 20 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 53 states and 60 transitions. Complement of second has 11 states. [2018-11-28 23:16:02,604 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 23:16:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:02,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:02,605 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 5 letters. [2018-11-28 23:16:02,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 23:16:02,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,606 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 10 letters. [2018-11-28 23:16:02,606 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:02,608 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 60 transitions. [2018-11-28 23:16:02,610 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:16:02,611 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 32 states and 36 transitions. [2018-11-28 23:16:02,612 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:16:02,612 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:16:02,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 36 transitions. [2018-11-28 23:16:02,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:02,612 INFO L705 BuchiCegarLoop]: Abstraction has 32 states and 36 transitions. [2018-11-28 23:16:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 36 transitions. [2018-11-28 23:16:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 24. [2018-11-28 23:16:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:16:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2018-11-28 23:16:02,617 INFO L728 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 23:16:02,617 INFO L608 BuchiCegarLoop]: Abstraction has 24 states and 27 transitions. [2018-11-28 23:16:02,619 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:02,619 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 24 states and 27 transitions. [2018-11-28 23:16:02,620 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:16:02,620 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:02,620 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:02,621 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:16:02,621 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2018-11-28 23:16:02,621 INFO L794 eck$LassoCheckResult]: Stem: 335#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_~m~0, main_~n~0, main_~z~0;main_~m~0 := main_#t~nondet2;havoc main_#t~nondet2; 336#L30 assume !(main_~m~0 <= 0);main_~n~0 := main_#t~nondet3;havoc main_#t~nondet3; 344#L34 assume !(main_~n~0 <= 0); 331#L37 call main_#t~ret4 := gcd(main_~m~0, main_~n~0);< 332#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 333#L16 assume !(~y1 <= 0 || ~y2 <= 0); 349#L19 assume !(~y1 == ~y2); 348#L22 assume ~y1 > ~y2; 327#L23 call #t~ret0 := gcd(~y1 - ~y2, ~y2);< 329#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2018-11-28 23:16:02,621 INFO L796 eck$LassoCheckResult]: Loop: 345#L16 assume !(~y1 <= 0 || ~y2 <= 0); 337#L19 assume !(~y1 == ~y2); 339#L22 assume !(~y1 > ~y2); 338#L25 call #t~ret1 := gcd(~y1, ~y2 - ~y1);< 342#gcdENTRY ~y1 := #in~y1;~y2 := #in~y2; 345#L16 [2018-11-28 23:16:02,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash -488674700, now seen corresponding path program 2 times [2018-11-28 23:16:02,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,624 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:02,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,638 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash 32576381, now seen corresponding path program 2 times [2018-11-28 23:16:02,639 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,639 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,640 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:02,640 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:02,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1201587990, now seen corresponding path program 1 times [2018-11-28 23:16:02,648 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:02,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:02,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,649 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:02,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:02,818 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:02,818 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:02,818 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:02,818 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:02,819 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:02,819 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,819 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:02,819 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:02,819 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:02,819 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:02,820 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:02,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,826 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:02,845 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 23:16:02,934 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:02,935 INFO L412 LassoAnalysis]: Checking for nontermination... 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) [2018-11-28 23:16:02,944 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:02,944 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:02,949 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:02,950 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {gcd_#t~ret0=0} Honda state: {gcd_#t~ret0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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 23:16:02,970 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:02,970 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 23:16:02,997 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:02,997 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:03,773 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:03,776 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:03,776 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:03,776 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:03,776 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:03,777 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:03,777 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:03,777 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:03,777 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:03,777 INFO L131 ssoRankerPreferences]: Filename of dumped script: gcd01_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:03,777 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:03,777 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:03,779 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 23:16:03,785 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 23:16:03,829 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 23:16:03,833 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 23:16:04,019 WARN L180 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 20 [2018-11-28 23:16:04,050 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:04,051 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:04,051 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 23:16:04,052 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,052 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,052 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,052 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,052 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,052 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,055 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,057 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:04,058 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 23:16:04,058 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:04,058 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:04,059 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:04,059 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:04,059 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:04,062 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:04,062 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:04,070 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:04,076 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:04,076 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:04,077 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:04,077 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:04,077 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:04,077 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(gcd_~y2) = 1*gcd_~y2 Supporting invariants [] [2018-11-28 23:16:04,079 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:04,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:04,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,339 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 23:16:04,339 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 23:16:04,339 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:16:04,385 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2018-11-28 23:16:04,389 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 23:16:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:04,390 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 23:16:04,390 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,390 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:04,410 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,455 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,489 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 23:16:04,490 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:16:04,490 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:16:04,554 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 45 states and 50 transitions. Complement of second has 11 states. [2018-11-28 23:16:04,555 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 23:16:04,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:04,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:16:04,556 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 23:16:04,556 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,556 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:04,574 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,596 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:04,614 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:04,650 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 23:16:04,650 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2018-11-28 23:16:04,651 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:16:04,686 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 24 states and 27 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 74 states and 85 transitions. Complement of second has 12 states. [2018-11-28 23:16:04,688 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 23:16:04,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 23:16:04,689 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 5 letters. [2018-11-28 23:16:04,690 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,691 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 15 letters. Loop has 5 letters. [2018-11-28 23:16:04,692 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,692 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 10 letters. Loop has 10 letters. [2018-11-28 23:16:04,693 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:04,693 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 85 transitions. [2018-11-28 23:16:04,697 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,697 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 0 states and 0 transitions. [2018-11-28 23:16:04,697 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:04,697 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:04,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:04,699 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,699 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,699 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:04,699 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:04,699 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:04,699 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:04,699 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:04,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:04 BoogieIcfgContainer [2018-11-28 23:16:04,709 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:04,709 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:04,709 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:04,710 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:04,710 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:53" (3/4) ... [2018-11-28 23:16:04,716 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:04,716 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:04,717 INFO L168 Benchmark]: Toolchain (without parser) took 11964.02 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 946.0 MB in the beginning and 825.0 MB in the end (delta: 121.0 MB). Peak memory consumption was 263.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,718 INFO L168 Benchmark]: CDTParser took 0.20 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 23:16:04,720 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.27 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,721 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.14 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,722 INFO L168 Benchmark]: Boogie Preprocessor took 20.88 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,722 INFO L168 Benchmark]: RCFGBuilder took 457.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,723 INFO L168 Benchmark]: BuchiAutomizer took 11156.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 825.0 MB in the end (delta: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:04,725 INFO L168 Benchmark]: Witness Printer took 6.67 ms. Allocated memory is still 1.2 GB. Free memory is still 825.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:04,730 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 281.27 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 36.14 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.88 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 457.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -185.6 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 11156.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 825.0 MB in the end (delta: 295.9 MB). Peak memory consumption was 295.9 MB. Max. memory is 11.5 GB. * Witness Printer took 6.67 ms. Allocated memory is still 1.2 GB. Free memory is still 825.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 3 terminating modules (0 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function \old(y1) and consists of 7 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function y2 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 11.1s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 8.6s. Construction of modules took 0.6s. Büchi inclusion checks took 1.6s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 26 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 24 states and ocurred in iteration 2. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 47 SDtfs, 78 SDslu, 8 SDs, 0 SdLazy, 115 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT3 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital25 mio100 ax100 hnf91 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq177 hnf91 smp89 dnf100 smp100 tf106 neg98 sie112 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 12ms VariablesStem: 0 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 5.9s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...