./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_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-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_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 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:14:58,887 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:14:58,889 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:14:58,908 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:14:58,908 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:14:58,909 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:14:58,910 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:14:58,913 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:14:58,914 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:14:58,915 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:14:58,916 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:14:58,917 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:14:58,918 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:14:58,919 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:14:58,921 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:14:58,921 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:14:58,923 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:14:58,925 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:14:58,927 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:14:58,929 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:14:58,931 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:14:58,932 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:14:58,935 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:14:58,935 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:14:58,936 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:14:58,937 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:14:58,938 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:14:58,939 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:14:58,940 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:14:58,941 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:14:58,942 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:14:58,943 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:14:58,943 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:14:58,943 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:14:58,944 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:14:58,949 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:14:58,949 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:14:58,985 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:14:58,987 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:14:58,989 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:14:58,989 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:14:58,989 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:14:58,991 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:14:58,992 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:14:58,992 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:14:58,993 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:14:58,993 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:14:58,993 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:14:58,993 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:14:58,993 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:14:58,994 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:14:58,995 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:14:58,997 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:14:58,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:14:58,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:14:58,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:14:58,998 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:14:58,999 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:14:58,999 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:14:58,999 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:14:59,003 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:14:59,004 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 -> 6c09c2a46ed7454ea61f3b2ddb99e3e2ba9fd4da [2018-11-28 23:14:59,063 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:14:59,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:14:59,088 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:14:59,089 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:14:59,090 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:14:59,091 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:14:59,164 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1e242d/ff0b59294b1b4a38b51b5ce60fd4cff7/FLAGbcbcda57b [2018-11-28 23:14:59,687 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:14:59,688 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:14:59,695 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1e242d/ff0b59294b1b4a38b51b5ce60fd4cff7/FLAGbcbcda57b [2018-11-28 23:15:00,039 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d1e242d/ff0b59294b1b4a38b51b5ce60fd4cff7 [2018-11-28 23:15:00,043 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:00,044 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:00,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:00,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:00,049 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:00,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bf05ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00, skipping insertion in model container [2018-11-28 23:15:00,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:00,083 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:00,313 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:00,320 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:00,343 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:00,361 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:00,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00 WrapperNode [2018-11-28 23:15:00,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:00,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:00,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:00,363 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:00,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,381 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,408 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:00,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:00,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:00,409 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:00,421 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,427 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... [2018-11-28 23:15:00,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:00,439 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:00,439 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:00,439 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:00,440 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:00,590 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:00,759 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:00,760 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:15:00,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:00 BoogieIcfgContainer [2018-11-28 23:15:00,761 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:00,761 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:00,761 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:00,765 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:00,766 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:00,766 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:00" (1/3) ... [2018-11-28 23:15:00,767 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b17d326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:00, skipping insertion in model container [2018-11-28 23:15:00,767 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:00,768 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:00" (2/3) ... [2018-11-28 23:15:00,768 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7b17d326 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:00, skipping insertion in model container [2018-11-28 23:15:00,768 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:00,768 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:00" (3/3) ... [2018-11-28 23:15:00,770 INFO L375 chiAutomizerObserver]: Analyzing ICFG BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c [2018-11-28 23:15:00,831 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:00,831 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:00,832 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:00,832 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:00,832 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:00,832 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:00,832 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:00,832 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:00,832 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:00,848 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:00,873 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:00,873 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:00,874 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:00,882 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:00,882 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:00,882 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:00,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:00,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:00,884 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:00,884 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:00,885 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:00,885 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:00,894 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 7#L18true assume main_~y1~0 > 0 && main_~y2~0 > 0; 8#L20-2true [2018-11-28 23:15:00,894 INFO L796 eck$LassoCheckResult]: Loop: 8#L20-2true assume !!(main_~y1~0 != main_~y2~0); 10#L20true assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 8#L20-2true [2018-11-28 23:15:00,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2018-11-28 23:15:00,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:00,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:00,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:00,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:00,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:01,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:01,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 1 times [2018-11-28 23:15:01,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:01,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:01,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:01,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:01,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:01,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:01,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:01,025 INFO L82 PathProgramCache]: Analyzing trace with hash 957575, now seen corresponding path program 1 times [2018-11-28 23:15:01,025 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:01,025 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:01,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:01,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:01,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:01,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:01,340 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:01,342 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:01,342 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:01,342 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:01,342 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:01,342 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:01,342 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:01,343 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:01,343 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:15:01,343 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:01,343 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:01,374 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,444 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,466 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:01,819 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:01,820 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:01,832 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:01,833 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:01,850 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:01,850 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:01,888 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:01,888 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:01,917 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:01,917 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:02,056 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:02,059 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:02,059 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:02,059 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:02,059 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:02,059 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:02,059 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:02,059 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:02,060 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:02,060 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration1_Lasso [2018-11-28 23:15:02,060 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:02,060 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:02,063 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,107 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,120 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:02,264 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:02,269 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:02,271 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:02,272 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:02,273 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:02,273 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:02,273 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:02,280 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:02,280 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:02,329 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:02,355 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:02,355 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:02,358 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:02,361 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:02,362 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:02,363 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-28 23:15:02,379 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:02,626 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:02,658 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:02,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:02,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:02,710 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 23:15:02,711 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 23:15:03,047 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 28 states and 35 transitions. Complement of second has 6 states. [2018-11-28 23:15:03,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:03,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:03,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2018-11-28 23:15:03,054 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:15:03,056 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:03,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:03,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:03,057 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:15:03,057 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:03,058 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 35 transitions. [2018-11-28 23:15:03,062 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:03,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 8 states and 11 transitions. [2018-11-28 23:15:03,067 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 23:15:03,067 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2018-11-28 23:15:03,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 11 transitions. [2018-11-28 23:15:03,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:03,068 INFO L705 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:03,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states and 11 transitions. [2018-11-28 23:15:03,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2018-11-28 23:15:03,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:15:03,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-28 23:15:03,093 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:03,093 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:03,094 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:03,094 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-28 23:15:03,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:03,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:03,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:03,095 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:03,095 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:03,096 INFO L794 eck$LassoCheckResult]: Stem: 81#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 82#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 88#L20-2 assume !!(main_~y1~0 != main_~y2~0); 87#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 83#L20-2 [2018-11-28 23:15:03,096 INFO L796 eck$LassoCheckResult]: Loop: 83#L20-2 assume !!(main_~y1~0 != main_~y2~0); 84#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 83#L20-2 [2018-11-28 23:15:03,096 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,096 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 1 times [2018-11-28 23:15:03,096 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,096 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:03,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,109 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 2 times [2018-11-28 23:15:03,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:03,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:03,125 INFO L82 PathProgramCache]: Analyzing trace with hash 920231916, now seen corresponding path program 1 times [2018-11-28 23:15:03,125 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:03,127 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:03,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,129 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:03,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:03,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:03,290 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:03,291 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:03,291 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:03,291 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:03,291 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:03,291 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:03,291 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:03,292 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:03,292 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-28 23:15:03,292 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:03,292 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:03,294 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:03,317 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:03,344 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:03,525 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:03,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:03,580 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 23:15:03,943 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:03,943 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:03,948 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:03,949 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:03,970 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:03,970 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 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:03,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:03,978 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:03,981 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:03,981 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:04,004 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:04,004 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,031 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:04,031 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:04,194 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:04,196 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:04,196 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:04,196 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:04,196 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:04,197 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:04,197 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,197 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:04,197 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:04,197 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration2_Lasso [2018-11-28 23:15:04,197 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:04,197 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:04,200 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,204 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,206 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,248 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,251 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,368 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:04,369 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:04,370 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:04,371 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:04,372 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:04,372 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:04,372 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:04,375 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:04,375 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:04,379 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:04,380 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:04,380 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:04,381 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:04,381 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:04,381 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:04,382 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:04,383 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:04,383 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:04,384 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:04,386 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:04,386 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:04,387 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:04,387 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:04,387 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:04,392 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:04,392 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:04,432 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:04,455 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:04,455 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:04,456 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:04,457 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:04,458 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:04,458 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y1~0 - 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-28 23:15:04,484 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:04,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:04,571 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:04,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:04,645 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:04,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:04,646 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:04,646 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 4 states. [2018-11-28 23:15:04,721 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 5. Second operand 4 states. Result 12 states and 17 transitions. Complement of second has 6 states. [2018-11-28 23:15:04,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:15:04,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:04,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:04,725 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:15:04,725 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:04,726 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-28 23:15:04,726 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:04,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 17 transitions. [2018-11-28 23:15:04,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:04,728 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 12 states and 17 transitions. [2018-11-28 23:15:04,729 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2018-11-28 23:15:04,729 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:15:04,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 17 transitions. [2018-11-28 23:15:04,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:04,729 INFO L705 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-28 23:15:04,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states and 17 transitions. [2018-11-28 23:15:04,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-28 23:15:04,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-28 23:15:04,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 17 transitions. [2018-11-28 23:15:04,732 INFO L728 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-28 23:15:04,732 INFO L608 BuchiCegarLoop]: Abstraction has 12 states and 17 transitions. [2018-11-28 23:15:04,732 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:04,732 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 17 transitions. [2018-11-28 23:15:04,733 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:15:04,733 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:04,733 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:04,734 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2018-11-28 23:15:04,734 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:04,734 INFO L794 eck$LassoCheckResult]: Stem: 151#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 152#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 153#L20-2 assume !!(main_~y1~0 != main_~y2~0); 158#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 159#L20-2 assume !!(main_~y1~0 != main_~y2~0); 160#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 154#L20-2 [2018-11-28 23:15:04,734 INFO L796 eck$LassoCheckResult]: Loop: 154#L20-2 assume !!(main_~y1~0 != main_~y2~0); 155#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 154#L20-2 [2018-11-28 23:15:04,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,735 INFO L82 PathProgramCache]: Analyzing trace with hash 920231918, now seen corresponding path program 2 times [2018-11-28 23:15:04,735 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:04,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1380, now seen corresponding path program 3 times [2018-11-28 23:15:04,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,749 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:04,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:04,754 INFO L82 PathProgramCache]: Analyzing trace with hash -420389359, now seen corresponding path program 2 times [2018-11-28 23:15:04,754 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:04,754 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:04,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,756 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:04,756 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:04,890 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:04,890 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:04,891 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:04,891 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:04,891 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:04,891 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:04,892 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:04,892 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:04,892 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-28 23:15:04,892 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:04,892 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:04,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,905 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,912 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,914 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,916 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:04,941 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,091 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:05,091 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 23:15:05,101 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,102 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,120 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,120 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:05,143 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,143 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,162 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,163 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:05,168 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,168 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,171 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,172 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} 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 23:15:05,198 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,198 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,218 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:05,219 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:05,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:05,226 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 23:15:05,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:05,250 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:05,370 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:05,372 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:05,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:05,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:05,373 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:05,373 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:05,373 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:05,373 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:05,373 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:05,373 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration3_Lasso [2018-11-28 23:15:05,373 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:05,376 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:05,377 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,385 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,390 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,394 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:05,485 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:05,486 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:05,486 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:05,488 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,489 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:05,489 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,489 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,489 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,490 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:05,490 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:05,492 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,492 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:05,493 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,493 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:05,493 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,494 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,494 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,494 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:05,494 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:05,495 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,495 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:05,496 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,496 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,496 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,496 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,500 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:05,500 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:05,504 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,505 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:05,505 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,506 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,506 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,506 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,507 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:05,508 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:05,523 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:05,524 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:05,524 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:05,528 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:05,528 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:05,528 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:05,530 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:05,530 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:05,558 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:05,570 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:05,570 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:05,571 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:05,573 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:05,573 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:05,574 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = -1*ULTIMATE.start_main_~y2~0 + 1*ULTIMATE.start_main_~y1~0 Supporting invariants [1*ULTIMATE.start_main_~y2~0 - 1 >= 0] [2018-11-28 23:15:05,601 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:05,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,696 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:05,697 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:05,697 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:15:05,739 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-11-28 23:15:05,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:05,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:05,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:15:05,742 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:15:05,742 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:05,742 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:05,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,773 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:05,794 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:05,794 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:15:05,831 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 14 states and 21 transitions. Complement of second has 6 states. [2018-11-28 23:15:05,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:05,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:05,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 7 transitions. [2018-11-28 23:15:05,833 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 7 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:15:05,834 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:05,834 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:05,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,884 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:05,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:05,908 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 1 loop predicates [2018-11-28 23:15:05,908 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8 Second operand 4 states. [2018-11-28 23:15:06,007 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 17 transitions. cyclomatic complexity: 8. Second operand 4 states. Result 16 states and 24 transitions. Complement of second has 5 states. [2018-11-28 23:15:06,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:06,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:06,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2018-11-28 23:15:06,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 2 letters. [2018-11-28 23:15:06,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 2 letters. [2018-11-28 23:15:06,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 6 letters. Loop has 4 letters. [2018-11-28 23:15:06,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 16 states and 24 transitions. [2018-11-28 23:15:06,014 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:06,015 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 16 states to 14 states and 20 transitions. [2018-11-28 23:15:06,015 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:15:06,016 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2018-11-28 23:15:06,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2018-11-28 23:15:06,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:06,016 INFO L705 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2018-11-28 23:15:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2018-11-28 23:15:06,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 6. [2018-11-28 23:15:06,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-28 23:15:06,018 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:06,018 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:06,018 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:06,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-28 23:15:06,018 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:06,019 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:06,019 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:06,019 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:06,019 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:06,019 INFO L794 eck$LassoCheckResult]: Stem: 330#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 331#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 332#L20-2 [2018-11-28 23:15:06,019 INFO L796 eck$LassoCheckResult]: Loop: 332#L20-2 assume !!(main_~y1~0 != main_~y2~0); 334#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 332#L20-2 [2018-11-28 23:15:06,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,022 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 2 times [2018-11-28 23:15:06,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,022 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,024 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:06,024 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,029 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1382, now seen corresponding path program 1 times [2018-11-28 23:15:06,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,032 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:06,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,037 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,037 INFO L82 PathProgramCache]: Analyzing trace with hash 957577, now seen corresponding path program 3 times [2018-11-28 23:15:06,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:06,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,094 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:06,094 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:06,094 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:06,094 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:06,095 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:06,095 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,095 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:06,095 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:06,095 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:15:06,095 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:06,095 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:06,097 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,102 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,105 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 23:15:06,108 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,128 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,228 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:06,228 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 23:15:06,243 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,244 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,260 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,260 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,312 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,313 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,318 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,318 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,338 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,339 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,358 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,359 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 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 23:15:06,363 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,363 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,366 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:06,366 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,388 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:06,388 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,417 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:06,417 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:06,544 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:06,546 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:06,546 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:06,546 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:06,546 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:06,546 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:06,546 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,546 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:06,546 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:06,547 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration4_Lasso [2018-11-28 23:15:06,547 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:06,547 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:06,549 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,557 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,560 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,563 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,575 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,589 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,655 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:06,656 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:06,656 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:06,657 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,657 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:06,657 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,657 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,658 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,658 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:06,658 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:06,659 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,659 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:06,660 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,660 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:06,660 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,660 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,660 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,661 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:06,661 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:06,661 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,662 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:06,662 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,662 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:06,663 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,663 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,663 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,663 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:06,663 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:06,664 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,664 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:06,665 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,665 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,665 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,665 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,666 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:06,667 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:06,669 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:06,669 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:06,670 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:06,670 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:06,670 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:06,670 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:06,671 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:06,671 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:06,681 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:06,690 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:06,690 INFO L444 ModelExtractionUtils]: 4 out of 10 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:06,690 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:06,691 INFO L440 nArgumentSynthesizer]: Removed 1 redundant supporting invariants from a total of 2. [2018-11-28 23:15:06,691 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:06,692 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y1~0, ULTIMATE.start_main_~y2~0) = -1*ULTIMATE.start_main_~y1~0 + 1*ULTIMATE.start_main_~y2~0 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-28 23:15:06,713 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:06,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:06,784 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:06,787 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:06,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:06,789 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 23:15:06,789 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3 Second operand 3 states. [2018-11-28 23:15:06,856 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 3. Second operand 3 states. Result 12 states and 18 transitions. Complement of second has 5 states. [2018-11-28 23:15:06,857 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 23:15:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:06,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 4 transitions. [2018-11-28 23:15:06,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:15:06,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,858 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:15:06,858 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,859 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 4 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:15:06,859 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:06,859 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 12 states and 18 transitions. [2018-11-28 23:15:06,860 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:06,860 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 12 states to 10 states and 14 transitions. [2018-11-28 23:15:06,861 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-11-28 23:15:06,861 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-11-28 23:15:06,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2018-11-28 23:15:06,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:06,861 INFO L705 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2018-11-28 23:15:06,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2018-11-28 23:15:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 9. [2018-11-28 23:15:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2018-11-28 23:15:06,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 13 transitions. [2018-11-28 23:15:06,864 INFO L728 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-28 23:15:06,864 INFO L608 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-28 23:15:06,864 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:06,864 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states and 13 transitions. [2018-11-28 23:15:06,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:06,866 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:06,866 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:06,868 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 23:15:06,868 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:15:06,868 INFO L794 eck$LassoCheckResult]: Stem: 389#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 390#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 391#L20-2 assume !!(main_~y1~0 != main_~y2~0); 392#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 397#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-11-28 23:15:06,868 INFO L796 eck$LassoCheckResult]: Loop: 395#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 396#L20-2 assume !!(main_~y1~0 != main_~y2~0); 395#L20 [2018-11-28 23:15:06,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 2 times [2018-11-28 23:15:06,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:06,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,876 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1532, now seen corresponding path program 2 times [2018-11-28 23:15:06,877 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,877 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,880 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:06,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,885 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:06,885 INFO L82 PathProgramCache]: Analyzing trace with hash -1537641183, now seen corresponding path program 3 times [2018-11-28 23:15:06,885 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:06,885 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:06,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,888 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:06,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:06,963 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:06,963 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:06,963 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:06,964 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:06,964 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:06,964 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:06,964 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:06,964 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:06,964 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-28 23:15:06,965 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:06,965 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:06,967 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,970 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,971 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,977 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,979 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:06,987 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,111 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:07,112 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,124 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,124 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,147 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,147 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 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,153 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,153 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,160 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,160 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#res=0} Honda state: {ULTIMATE.start_main_#res=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,180 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,180 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,183 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,184 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 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 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,205 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,205 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,210 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,210 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet0=0} Honda state: {ULTIMATE.start_main_#t~nondet0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,230 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,230 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,251 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:07,251 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 26 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 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,255 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:07,255 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 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 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,281 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:07,281 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:07,613 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:07,615 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:07,615 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:07,615 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:07,615 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:07,615 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:07,615 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:07,615 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:07,616 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:07,616 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration5_Lasso [2018-11-28 23:15:07,616 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:07,616 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:07,617 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,627 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,630 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,634 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,640 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,646 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:07,833 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:07,833 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:07,834 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,837 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,837 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,837 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,838 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,838 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:07,839 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:07,846 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,847 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,847 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,847 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:07,853 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,853 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,853 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,854 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:07,854 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:07,854 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,855 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 23:15:07,855 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,855 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,858 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,858 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,859 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:07,860 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:07,864 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,865 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,865 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,865 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:07,868 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,868 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,868 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,869 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:07,869 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:07,870 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,870 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,870 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,874 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:07,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:07,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:07,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,875 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:07,875 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:07,877 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:07,878 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:07,878 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:07,879 INFO L205 nArgumentSynthesizer]: 2 stem disjuncts [2018-11-28 23:15:07,879 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:07,879 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:07,885 INFO L402 nArgumentSynthesizer]: We have 20 Motzkin's Theorem applications. [2018-11-28 23:15:07,885 INFO L403 nArgumentSynthesizer]: A total of 4 supporting invariants were added. [2018-11-28 23:15:07,944 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:07,973 INFO L443 ModelExtractionUtils]: Simplification made 6 calls to the SMT solver. [2018-11-28 23:15:07,973 INFO L444 ModelExtractionUtils]: 8 out of 16 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:15:07,974 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:07,977 INFO L440 nArgumentSynthesizer]: Removed 3 redundant supporting invariants from a total of 4. [2018-11-28 23:15:07,978 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:07,978 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0, ULTIMATE.start_main_~y1~0) = 2*ULTIMATE.start_main_~y2~0 - 2*ULTIMATE.start_main_~y1~0 + 1 Supporting invariants [1*ULTIMATE.start_main_~y1~0 - 1 >= 0] [2018-11-28 23:15:08,004 INFO L297 tatePredicateManager]: 0 out of 1 supporting invariants were superfluous and have been removed [2018-11-28 23:15:08,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,223 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,237 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:08,277 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-28 23:15:08,277 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:15:08,333 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 14 states and 18 transitions. Complement of second has 6 states. [2018-11-28 23:15:08,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:08,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:08,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 6 transitions. [2018-11-28 23:15:08,337 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 6 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:15:08,337 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,338 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:08,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:08,461 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-28 23:15:08,462 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:15:08,514 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 11 states and 15 transitions. Complement of second has 6 states. [2018-11-28 23:15:08,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:08,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:08,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 5 transitions. [2018-11-28 23:15:08,518 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 5 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:15:08,518 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,518 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:08,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:08,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:08,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:08,677 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.2 stem predicates 2 loop predicates [2018-11-28 23:15:08,677 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6 Second operand 4 states. [2018-11-28 23:15:08,716 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states and 13 transitions. cyclomatic complexity: 6. Second operand 4 states. Result 17 states and 21 transitions. Complement of second has 5 states. [2018-11-28 23:15:08,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 2 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:08,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:08,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2018-11-28 23:15:08,717 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:15:08,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 7 letters. Loop has 2 letters. [2018-11-28 23:15:08,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 23:15:08,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:08,720 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 21 transitions. [2018-11-28 23:15:08,721 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2018-11-28 23:15:08,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 17 transitions. [2018-11-28 23:15:08,722 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2018-11-28 23:15:08,722 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:08,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 17 transitions. [2018-11-28 23:15:08,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:08,723 INFO L705 BuchiCegarLoop]: Abstraction has 13 states and 17 transitions. [2018-11-28 23:15:08,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 17 transitions. [2018-11-28 23:15:08,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 8. [2018-11-28 23:15:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2018-11-28 23:15:08,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2018-11-28 23:15:08,724 INFO L728 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:08,724 INFO L608 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2018-11-28 23:15:08,724 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:15:08,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2018-11-28 23:15:08,728 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2018-11-28 23:15:08,728 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:08,728 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:08,729 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 23:15:08,729 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [2, 1, 1] [2018-11-28 23:15:08,729 INFO L794 eck$LassoCheckResult]: Stem: 554#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~y1~0, main_~y2~0;havoc main_~y1~0;havoc main_~y2~0;main_~y1~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y2~0 := main_#t~nondet1;havoc main_#t~nondet1; 555#L18 assume main_~y1~0 > 0 && main_~y2~0 > 0; 556#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-11-28 23:15:08,729 INFO L796 eck$LassoCheckResult]: Loop: 560#L20 assume !(main_~y1~0 > main_~y2~0);main_~y2~0 := main_~y2~0 - main_~y1~0; 559#L20-2 assume !!(main_~y1~0 != main_~y2~0); 557#L20 assume main_~y1~0 > main_~y2~0;main_~y1~0 := main_~y1~0 - main_~y2~0; 561#L20-2 assume !!(main_~y1~0 != main_~y2~0); 560#L20 [2018-11-28 23:15:08,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,729 INFO L82 PathProgramCache]: Analyzing trace with hash 29684838, now seen corresponding path program 3 times [2018-11-28 23:15:08,729 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,733 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:08,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,745 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,746 INFO L82 PathProgramCache]: Analyzing trace with hash 1472761, now seen corresponding path program 1 times [2018-11-28 23:15:08,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,747 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:08,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,756 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:08,756 INFO L82 PathProgramCache]: Analyzing trace with hash -204426530, now seen corresponding path program 4 times [2018-11-28 23:15:08,756 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:08,758 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:08,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,760 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:08,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:09,059 WARN L180 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 17 [2018-11-28 23:15:09,215 WARN L180 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-28 23:15:09,235 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:09,235 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:09,235 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:09,235 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:09,235 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:09,235 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,236 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:09,236 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:09,236 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:09,236 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:09,236 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:09,237 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:09,278 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:09,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:09,489 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:09,489 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,493 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:09,493 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:09,513 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:09,514 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 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 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,518 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:09,518 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:09,539 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:09,540 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 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 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,544 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:09,544 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2018-11-28 23:15:09,574 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:09,574 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,931 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:09,933 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:09,933 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:09,934 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:09,934 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:09,934 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:09,934 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:09,934 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:09,934 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:09,934 INFO L131 ssoRankerPreferences]: Filename of dumped script: BradleyMannaSipma-CAV2005-Fig1_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:09,934 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:09,934 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:09,935 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:09,956 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:09,958 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:10,083 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:10,084 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:10,084 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:10,085 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:10,085 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:10,085 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:10,085 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:10,090 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:10,090 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:10,093 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:10,093 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:10,094 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:10,096 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:10,096 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:10,096 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:10,097 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:10,097 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:10,099 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:10,099 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 23:15:10,100 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:10,101 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:10,101 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:10,101 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:10,101 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:10,102 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:10,102 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:10,115 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:10,124 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2018-11-28 23:15:10,124 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 2 variables to zero. [2018-11-28 23:15:10,125 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:10,125 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:10,125 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:10,125 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y2~0) = 1*ULTIMATE.start_main_~y2~0 Supporting invariants [] [2018-11-28 23:15:10,125 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:10,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:10,313 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:10,337 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:10,338 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 23:15:10,338 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4 Second operand 4 states. [2018-11-28 23:15:10,365 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states and 11 transitions. cyclomatic complexity: 4. Second operand 4 states. Result 27 states and 41 transitions. Complement of second has 6 states. [2018-11-28 23:15:10,366 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 23:15:10,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:10,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 12 transitions. [2018-11-28 23:15:10,367 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 4 letters. [2018-11-28 23:15:10,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 9 letters. Loop has 4 letters. [2018-11-28 23:15:10,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,368 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 12 transitions. Stem has 5 letters. Loop has 8 letters. [2018-11-28 23:15:10,368 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:10,368 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 41 transitions. [2018-11-28 23:15:10,370 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:10,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-28 23:15:10,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:10,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:10,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:10,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:10,370 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,370 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,371 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:10,371 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:15:10,371 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:10,371 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:10,371 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:10,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:10 BoogieIcfgContainer [2018-11-28 23:15:10,379 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:10,379 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:10,379 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:10,379 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:10,380 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:00" (3/4) ... [2018-11-28 23:15:10,384 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:10,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:10,385 INFO L168 Benchmark]: Toolchain (without parser) took 10341.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 198.2 MB). Free memory was 947.3 MB in the beginning and 900.8 MB in the end (delta: 46.5 MB). Peak memory consumption was 244.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,386 INFO L168 Benchmark]: CDTParser took 0.17 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 23:15:10,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.70 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,388 INFO L168 Benchmark]: Boogie Preprocessor took 30.49 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,388 INFO L168 Benchmark]: RCFGBuilder took 321.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,389 INFO L168 Benchmark]: BuchiAutomizer took 9617.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 900.8 MB in the end (delta: 212.5 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:10,390 INFO L168 Benchmark]: Witness Printer took 4.92 ms. Allocated memory is still 1.2 GB. Free memory is still 900.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:10,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 316.70 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 45.67 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.49 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 321.55 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 9617.56 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 65.5 MB). Free memory was 1.1 GB in the beginning and 900.8 MB in the end (delta: 212.5 MB). Peak memory consumption was 278.0 MB. Max. memory is 11.5 GB. * Witness Printer took 4.92 ms. Allocated memory is still 1.2 GB. Free memory is still 900.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 6 terminating modules (0 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One deterministic module has affine ranking function y1 + -1 * y2 and consists of 4 locations. One deterministic module has affine ranking function -1 * y1 + y2 and consists of 3 locations. One deterministic module has affine ranking function y2 and consists of 4 locations. One nondeterministic module has affine ranking function -1 * y2 + y1 and consists of 4 locations. One nondeterministic module has affine ranking function 2 * y2 + -2 * y1 + 1 and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 7.0s. Construction of modules took 0.2s. Büchi inclusion checks took 2.0s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 5. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 12 states and ocurred in iteration 2. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/2 HoareTripleCheckerStatistics: 32 SDtfs, 45 SDslu, 3 SDs, 0 SdLazy, 97 SolverSat, 40 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso5 LassoPreprocessingBenchmarks: Lassos: inital23 mio100 ax152 hnf92 lsp62 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq153 hnf96 smp87 dnf123 smp96 tf100 neg95 sie124 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 100ms VariablesStem: 2 VariablesLoop: 3 DisjunctsStem: 2 DisjunctsLoop: 2 SupportingInvariants: 4 MotzkinApplications: 20 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 18 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...