./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/GCD4_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/GCD4_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 e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 23:16:06,778 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:16:06,780 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:16:06,797 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:16:06,798 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:16:06,801 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:16:06,803 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:16:06,806 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:16:06,809 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:16:06,811 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:16:06,813 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:16:06,813 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:16:06,814 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:16:06,815 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:16:06,824 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:16:06,824 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:16:06,826 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:16:06,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:16:06,835 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:16:06,837 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:16:06,839 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:16:06,840 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:16:06,844 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:16:06,845 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:16:06,845 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:16:06,847 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:16:06,848 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:16:06,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:16:06,852 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:16:06,853 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:16:06,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:16:06,857 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:16:06,857 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:16:06,857 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:16:06,858 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:16:06,860 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:16:06,860 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:16:06,885 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:16:06,887 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:16:06,891 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:16:06,891 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:16:06,891 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:16:06,892 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:16:06,892 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:16:06,892 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:16:06,892 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:16:06,892 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:16:06,892 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:16:06,893 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:16:06,893 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:16:06,893 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:16:06,893 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:16:06,893 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:16:06,893 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:16:06,895 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:16:06,895 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:16:06,895 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:16:06,896 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:16:06,896 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:16:06,896 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:16:06,896 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:16:06,896 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:16:06,896 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:16:06,898 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:16:06,898 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:16:06,900 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:16:06,901 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 -> e1a6e72adfb4c8fee6c8faa90b8bdc807e2f6147 [2018-11-28 23:16:06,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:16:06,984 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:16:06,988 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:16:06,992 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:16:06,992 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:16:06,993 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-28 23:16:07,048 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd97bad3/cfab51cca977400fbee9341f4af4f3ac/FLAGb4030cce2 [2018-11-28 23:16:07,455 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:16:07,456 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/GCD4_true-termination_true-no-overflow.c [2018-11-28 23:16:07,462 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd97bad3/cfab51cca977400fbee9341f4af4f3ac/FLAGb4030cce2 [2018-11-28 23:16:07,845 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0bd97bad3/cfab51cca977400fbee9341f4af4f3ac [2018-11-28 23:16:07,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:16:07,850 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:16:07,851 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:07,851 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:16:07,855 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:16:07,855 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:07" (1/1) ... [2018-11-28 23:16:07,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576c7cb2 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 23:16:07,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:16:07" (1/1) ... [2018-11-28 23:16:07,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:16:07,884 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:16:08,106 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:08,115 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:16:08,135 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:16:08,157 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:16:08,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:16:08 WrapperNode [2018-11-28 23:16:08,158 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:16:08,158 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:08,159 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:16:08,159 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:16:08,169 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 23:16:08,175 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 23:16:08,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:16:08,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:16:08,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:16:08,204 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:16:08,215 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 23:16:08,216 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 23:16:08,216 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 23:16:08,217 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 23:16:08,220 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 23:16:08,227 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 23:16:08,228 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 23:16:08,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:16:08,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:16:08,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:16:08,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:16:08,231 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 23:16:08,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:16:08,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:16:08,603 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:16:08,604 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:16:08,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:16:08 BoogieIcfgContainer [2018-11-28 23:16:08,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:16:08,605 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:16:08,605 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:16:08,610 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:16:08,611 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,611 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:16:07" (1/3) ... [2018-11-28 23:16:08,612 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4abfc770 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 23:16:08,612 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,613 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 23:16:08,613 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4abfc770 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 23:16:08,613 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:16:08,613 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 23:16:08,615 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD4_true-termination_true-no-overflow.c [2018-11-28 23:16:08,716 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:16:08,719 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:16:08,720 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:16:08,720 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:16:08,720 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:16:08,720 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:16:08,720 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:16:08,721 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:16:08,722 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:16:08,749 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:08,774 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:08,774 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:08,774 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:08,782 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:08,783 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:16:08,783 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:16:08,783 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:16:08,784 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:08,785 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:08,785 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:08,785 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:16:08,785 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:16:08,795 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2018-11-28 23:16:08,796 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17-2true assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 9#L17-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 6#L13-2true [2018-11-28 23:16:08,802 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:08,803 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:16:08,805 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:08,806 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:08,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:08,873 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:08,916 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-28 23:16:08,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:08,916 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:08,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:08,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:08,938 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-28 23:16:08,938 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:08,938 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:08,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:08,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:08,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:09,131 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 15 [2018-11-28 23:16:09,165 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:09,166 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:09,167 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:09,167 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:09,167 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:09,167 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:09,167 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:09,167 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:09,168 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:09,168 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:09,168 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:09,193 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 23:16:09,296 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 23:16:09,324 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 23:16:09,523 WARN L180 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:16:09,701 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:09,702 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 23:16:09,710 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:09,711 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:16:09,746 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:09,746 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:10,776 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:10,779 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:10,779 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:10,779 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:10,779 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:10,780 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:10,780 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:10,780 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:10,780 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:10,780 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:16:10,780 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:10,780 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:10,783 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:10,789 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 23:16:10,811 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 23:16:10,958 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:16:11,009 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:11,015 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:11,016 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 23:16:11,018 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:11,018 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:11,019 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:11,019 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:11,023 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:11,024 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:11,034 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:11,035 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 23:16:11,038 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:11,038 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:11,039 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:11,039 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:11,039 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:11,042 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:11,042 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:11,060 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:11,077 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:11,077 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:11,079 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:11,079 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:11,080 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:11,080 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 23:16:11,082 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:11,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:11,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:11,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:11,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:11,243 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:11,460 WARN L180 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2018-11-28 23:16:11,521 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 23:16:11,536 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 23:16:11,538 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 4 states. [2018-11-28 23:16:11,775 WARN L180 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:16:11,947 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 10 states. [2018-11-28 23:16:11,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:11,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 24 transitions. [2018-11-28 23:16:11,954 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:16:11,955 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:11,955 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:16:11,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:11,956 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 24 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:16:11,956 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:11,958 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2018-11-28 23:16:11,963 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 23:16:11,969 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 11 states and 16 transitions. [2018-11-28 23:16:11,971 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:16:11,971 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:16:11,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 16 transitions. [2018-11-28 23:16:11,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:11,974 INFO L705 BuchiCegarLoop]: Abstraction has 11 states and 16 transitions. [2018-11-28 23:16:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states and 16 transitions. [2018-11-28 23:16:12,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 10. [2018-11-28 23:16:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2018-11-28 23:16:12,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 15 transitions. [2018-11-28 23:16:12,005 INFO L728 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-28 23:16:12,005 INFO L608 BuchiCegarLoop]: Abstraction has 10 states and 15 transitions. [2018-11-28 23:16:12,005 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:16:12,006 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 15 transitions. [2018-11-28 23:16:12,006 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 23:16:12,007 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:12,007 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:12,007 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 23:16:12,007 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:12,008 INFO L794 eck$LassoCheckResult]: Stem: 90#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 91#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 86#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2018-11-28 23:16:12,008 INFO L796 eck$LassoCheckResult]: Loop: 87#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 87#L17-2 [2018-11-28 23:16:12,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,008 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-28 23:16:12,008 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:12,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,022 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-28 23:16:12,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:12,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,030 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,030 INFO L82 PathProgramCache]: Analyzing trace with hash 963530, now seen corresponding path program 2 times [2018-11-28 23:16:12,031 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:12,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,110 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:12,110 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:12,111 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:12,111 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:12,111 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:12,111 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:12,111 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:12,111 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:12,112 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:12,112 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:12,112 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:12,114 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 23:16:12,122 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 23:16:12,131 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 23:16:12,263 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:12,264 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:16:12,269 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:12,270 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:12,291 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:12,291 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 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 23:16:12,297 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:12,297 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:12,317 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:12,317 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:16:12,329 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:12,329 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:16:12,475 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:12,476 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:12,577 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:12,579 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:12,579 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:12,579 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:12,580 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:12,580 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:12,580 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:12,580 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:12,580 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:12,580 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:16:12,580 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:12,581 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:12,582 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:12,598 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:12,603 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 23:16:12,736 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:12,738 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:12,738 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 23:16:12,739 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:12,739 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:12,739 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:12,740 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:12,742 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:12,744 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:12,757 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:12,757 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 23:16:12,758 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:12,758 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:12,758 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:12,759 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:12,764 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:12,764 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:12,776 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:12,777 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 23:16:12,777 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:12,781 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:12,781 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:12,781 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:12,781 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:12,782 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:12,782 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:12,793 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:12,800 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:12,801 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:16:12,801 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:12,801 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:12,801 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:12,802 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 23:16:12,803 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:12,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:12,846 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:12,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:12,855 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 23:16:12,856 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:12,856 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8 Second operand 2 states. [2018-11-28 23:16:12,880 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 15 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 15 states and 22 transitions. Complement of second has 5 states. [2018-11-28 23:16:12,881 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:16:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2018-11-28 23:16:12,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-28 23:16:12,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:12,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 4 letters. Loop has 1 letters. [2018-11-28 23:16:12,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:12,885 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 3 letters. Loop has 2 letters. [2018-11-28 23:16:12,885 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:12,885 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 15 states and 22 transitions. [2018-11-28 23:16:12,886 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:12,887 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 15 states to 13 states and 19 transitions. [2018-11-28 23:16:12,887 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2018-11-28 23:16:12,887 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2018-11-28 23:16:12,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2018-11-28 23:16:12,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:12,888 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2018-11-28 23:16:12,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2018-11-28 23:16:12,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 11. [2018-11-28 23:16:12,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-11-28 23:16:12,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 17 transitions. [2018-11-28 23:16:12,890 INFO L728 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2018-11-28 23:16:12,890 INFO L608 BuchiCegarLoop]: Abstraction has 11 states and 17 transitions. [2018-11-28 23:16:12,890 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:16:12,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 11 states and 17 transitions. [2018-11-28 23:16:12,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:16:12,891 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:12,891 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:12,893 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:16:12,893 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:16:12,893 INFO L794 eck$LassoCheckResult]: Stem: 146#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 147#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 150#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 153#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2018-11-28 23:16:12,894 INFO L796 eck$LassoCheckResult]: Loop: 144#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 148#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 143#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 144#L17-3 [2018-11-28 23:16:12,894 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,894 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 1 times [2018-11-28 23:16:12,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,896 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:12,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash 52221, now seen corresponding path program 2 times [2018-11-28 23:16:12,907 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,907 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:12,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:12,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:12,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285994, now seen corresponding path program 1 times [2018-11-28 23:16:12,916 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:12,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:12,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:12,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:12,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:13,040 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:16:13,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:16:13,043 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:16:13,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:13,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:13,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:16:13,209 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:16:13,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-11-28 23:16:13,315 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:13,316 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:13,316 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:13,316 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:13,316 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:13,316 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:13,316 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:13,317 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:13,317 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:13,317 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:13,317 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:13,319 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 23:16:13,353 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 23:16:13,358 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 23:16:13,466 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:13,467 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:16:13,471 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:13,472 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:13,500 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:13,501 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:18,511 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:18,514 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:18,514 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:18,514 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:18,514 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:18,515 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:18,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:18,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:18,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:18,515 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:16:18,515 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:18,515 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:18,518 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 23:16:18,521 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:18,580 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 23:16:18,721 WARN L180 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:16:19,034 WARN L180 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-11-28 23:16:19,042 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:19,042 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:19,043 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 23:16:19,043 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:19,044 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:19,044 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:19,044 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:19,046 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:19,046 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:19,052 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:19,053 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 23:16:19,053 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:19,054 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:19,054 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:19,054 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:19,054 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:19,056 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:19,056 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:19,063 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:19,069 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:19,069 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:19,070 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:19,070 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:19,070 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:19,070 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 23:16:19,070 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:19,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:19,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:19,169 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:19,292 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 23:16:19,293 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 23:16:19,293 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9 Second operand 4 states. [2018-11-28 23:16:19,399 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 11 states and 17 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 33 states and 52 transitions. Complement of second has 10 states. [2018-11-28 23:16:19,402 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 6 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:19,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:19,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 17 transitions. [2018-11-28 23:16:19,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:16:19,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 23:16:19,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 6 states and 17 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-28 23:16:19,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:19,405 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 52 transitions. [2018-11-28 23:16:19,409 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2018-11-28 23:16:19,409 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 24 states and 35 transitions. [2018-11-28 23:16:19,410 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 23:16:19,410 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2018-11-28 23:16:19,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 35 transitions. [2018-11-28 23:16:19,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:19,410 INFO L705 BuchiCegarLoop]: Abstraction has 24 states and 35 transitions. [2018-11-28 23:16:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 35 transitions. [2018-11-28 23:16:19,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2018-11-28 23:16:19,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-11-28 23:16:19,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 33 transitions. [2018-11-28 23:16:19,415 INFO L728 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2018-11-28 23:16:19,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:16:19,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:16:19,420 INFO L87 Difference]: Start difference. First operand 22 states and 33 transitions. Second operand 9 states. [2018-11-28 23:16:19,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:16:19,644 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-11-28 23:16:19,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:16:19,645 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-11-28 23:16:19,647 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 5 [2018-11-28 23:16:19,648 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 26 transitions. [2018-11-28 23:16:19,648 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 15 [2018-11-28 23:16:19,648 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:16:19,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 26 transitions. [2018-11-28 23:16:19,648 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:19,648 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 26 transitions. [2018-11-28 23:16:19,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 26 transitions. [2018-11-28 23:16:19,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 12. [2018-11-28 23:16:19,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:16:19,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions. [2018-11-28 23:16:19,654 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 23:16:19,654 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 16 transitions. [2018-11-28 23:16:19,654 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:16:19,654 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 16 transitions. [2018-11-28 23:16:19,655 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:16:19,655 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:19,655 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:19,655 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:16:19,655 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-28 23:16:19,655 INFO L794 eck$LassoCheckResult]: Stem: 322#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 323#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 326#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 325#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2018-11-28 23:16:19,657 INFO L796 eck$LassoCheckResult]: Loop: 321#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 324#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 318#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 319#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 321#L17-3 [2018-11-28 23:16:19,657 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,658 INFO L82 PathProgramCache]: Analyzing trace with hash 963528, now seen corresponding path program 2 times [2018-11-28 23:16:19,658 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:19,658 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:19,659 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:19,661 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,685 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1618930, now seen corresponding path program 1 times [2018-11-28 23:16:19,685 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:19,686 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:19,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,689 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:19,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,707 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:19,707 INFO L82 PathProgramCache]: Analyzing trace with hash 780807225, now seen corresponding path program 2 times [2018-11-28 23:16:19,708 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:19,708 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:19,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,709 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:16:19,709 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:19,848 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2018-11-28 23:16:19,869 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:19,869 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:19,870 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:19,870 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:19,870 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:19,870 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,870 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:19,870 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:19,871 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:16:19,871 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:19,871 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:19,872 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 23:16:19,875 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 23:16:19,877 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 23:16:19,987 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:19,988 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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:19,993 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:19,993 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:20,015 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:20,015 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /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 23:16:20,023 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:20,023 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:20,050 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:20,051 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_7=0} Honda state: {v_rep~unnamed0~0~false_7=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:16:20,055 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:20,056 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:16:20,084 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:20,084 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:30,068 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:30,072 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:30,072 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:30,072 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:30,072 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:30,073 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:30,073 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:30,073 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:30,073 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:30,073 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:16:30,073 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:30,074 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:30,075 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 23:16:30,105 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 23:16:30,109 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 23:16:30,223 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:30,224 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:30,225 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 23:16:30,225 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:30,226 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:30,226 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:30,226 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:30,226 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:30,227 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:30,227 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:30,235 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:30,242 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:16:30,242 INFO L444 ModelExtractionUtils]: 3 out of 6 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:16:30,242 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:30,242 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:30,243 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:30,243 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 23:16:30,243 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:30,264 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:30,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:30,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:30,284 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:30,307 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 23:16:30,308 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 23:16:30,308 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:16:30,359 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 16 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 23 states and 32 transitions. Complement of second has 6 states. [2018-11-28 23:16:30,362 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 23:16:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:16:30,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-28 23:16:30,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:16:30,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:30,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-28 23:16:30,363 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:30,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-28 23:16:30,366 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:30,366 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 32 transitions. [2018-11-28 23:16:30,367 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:30,368 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 19 states and 27 transitions. [2018-11-28 23:16:30,368 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 9 [2018-11-28 23:16:30,368 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2018-11-28 23:16:30,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 27 transitions. [2018-11-28 23:16:30,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:16:30,368 INFO L705 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2018-11-28 23:16:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states and 27 transitions. [2018-11-28 23:16:30,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 14. [2018-11-28 23:16:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-11-28 23:16:30,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2018-11-28 23:16:30,370 INFO L728 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:16:30,370 INFO L608 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:16:30,370 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:16:30,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2018-11-28 23:16:30,371 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:16:30,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:16:30,371 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:16:30,372 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1] [2018-11-28 23:16:30,372 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:16:30,372 INFO L794 eck$LassoCheckResult]: Stem: 405#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 406#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 415#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 412#L17-2 assume !(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0); 411#L17-3 main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 407#L13-2 assume !!(main_~y~0 > 0 && main_~x~0 > 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 402#L17-2 [2018-11-28 23:16:30,372 INFO L796 eck$LassoCheckResult]: Loop: 402#L17-2 assume !!(main_~xtmp~0 >= main_~y~0 && main_~y~0 > 0);main_~xtmp~0 := main_~xtmp~0 - main_~y~0; 402#L17-2 [2018-11-28 23:16:30,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:30,372 INFO L82 PathProgramCache]: Analyzing trace with hash 925951131, now seen corresponding path program 3 times [2018-11-28 23:16:30,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:30,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:30,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,374 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:30,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:30,392 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-28 23:16:30,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:30,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:30,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,393 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:30,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,400 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:30,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1360285992, now seen corresponding path program 4 times [2018-11-28 23:16:30,400 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:16:30,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:16:30,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,402 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:16:30,402 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:16:30,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:16:30,435 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:30,435 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:30,435 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:30,435 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:30,435 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:16:30,435 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:30,436 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:30,436 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:30,436 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:30,436 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:30,436 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:30,437 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 23:16:30,443 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 23:16:30,448 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:30,537 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:30,538 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:16:30,543 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:30,543 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:30,562 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:30,563 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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) [2018-11-28 23:16:30,572 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:30,572 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:30,599 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:16:30,599 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} 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 23:16:30,604 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:16:30,604 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 23:16:30,635 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:16:30,635 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:16:30,743 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:16:30,745 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:16:30,745 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:16:30,746 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:16:30,746 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:16:30,746 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:16:30,746 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:16:30,746 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:16:30,746 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:16:30,746 INFO L131 ssoRankerPreferences]: Filename of dumped script: GCD4_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:16:30,746 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:16:30,746 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:16:30,747 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:16:30,799 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 23:16:30,803 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 23:16:30,854 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:16:30,855 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:16:30,855 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 23:16:30,856 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:30,856 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:30,856 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:30,856 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:30,858 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:30,858 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:30,860 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:30,861 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 23:16:30,861 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:30,861 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:30,861 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:30,862 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:30,863 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:16:30,863 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:16:30,866 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:16:30,867 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 23:16:30,867 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:16:30,867 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:16:30,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:16:30,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:16:30,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:16:30,868 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:16:30,869 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:16:30,871 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:16:30,874 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:16:30,874 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:16:30,875 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:16:30,875 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:16:30,875 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:16:30,875 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 23:16:30,875 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:16:30,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:30,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:30,977 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:30,982 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:30,982 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 23:16:30,982 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:30,983 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-28 23:16:31,003 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2018-11-28 23:16:31,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:31,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:16:31,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:16:31,005 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 23:16:31,005 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:31,005 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:31,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:31,041 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:31,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:31,063 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 23:16:31,063 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:16:31,063 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-28 23:16:31,094 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 20 states and 28 transitions. Complement of second has 5 states. [2018-11-28 23:16:31,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:16:31,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:16:31,095 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 23:16:31,095 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:31,095 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:16:31,110 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:16:31,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:31,117 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:31,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:16:31,122 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:16:31,122 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 23:16:31,122 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 1 loop predicates [2018-11-28 23:16:31,123 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9 Second operand 2 states. [2018-11-28 23:16:31,134 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 9. Second operand 2 states. Result 22 states and 30 transitions. Complement of second has 4 states. [2018-11-28 23:16:31,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:16:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:16:31,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 23:16:31,136 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 23:16:31,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:31,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 7 letters. Loop has 1 letters. [2018-11-28 23:16:31,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:31,137 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:16:31,137 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:16:31,137 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 22 states and 30 transitions. [2018-11-28 23:16:31,138 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:31,138 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 22 states to 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:16:31,139 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:16:31,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:16:31,139 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:16:31,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:16:31,139 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:16:31,140 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:16:31,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:16:31 BoogieIcfgContainer [2018-11-28 23:16:31,147 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:16:31,148 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:16:31,148 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:16:31,148 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:16:31,148 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 23:16:31,158 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:16:31,158 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:16:31,159 INFO L168 Benchmark]: Toolchain (without parser) took 23309.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 194.5 MB). Free memory was 952.7 MB in the beginning and 1.1 GB in the end (delta: -139.1 MB). Peak memory consumption was 55.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:31,160 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:31,160 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:31,163 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.21 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:31,164 INFO L168 Benchmark]: Boogie Preprocessor took 25.45 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:31,164 INFO L168 Benchmark]: RCFGBuilder took 374.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:31,168 INFO L168 Benchmark]: BuchiAutomizer took 22542.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:16:31,169 INFO L168 Benchmark]: Witness Printer took 10.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:16:31,173 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.44 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 940.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.21 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.45 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 374.79 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.9 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -163.4 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 22542.26 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 66.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.2 MB). Peak memory consumption was 78.8 MB. Max. memory is 11.5 GB. * Witness Printer took 10.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (1 trivial, 4 deterministic, 1 nondeterministic). One deterministic module has affine ranking function y and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 3 locations. One deterministic module has affine ranking function xtmp and consists of 6 locations. One deterministic module has affine ranking function xtmp and consists of 4 locations. One nondeterministic module has affine ranking function xtmp and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 22.4s and 6 iterations. TraceHistogramMax:2. Analysis of lassos took 20.4s. Construction of modules took 0.3s. Büchi inclusion checks took 1.4s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 14 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 1/1 HoareTripleCheckerStatistics: 33 SDtfs, 45 SDslu, 9 SDs, 0 SdLazy, 102 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf95 lsp58 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq166 hnf91 smp100 dnf100 smp100 tf108 neg100 sie109 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 18ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 6 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 16.7s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...