./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_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/UrbanMine-ESOP2014-Fig3_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 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:15:25,523 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:25,525 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:25,537 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:25,537 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:25,538 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:25,539 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:25,541 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:25,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:25,543 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:25,544 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:25,544 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:25,545 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:25,546 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:25,548 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:25,548 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:25,549 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:25,551 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:25,553 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:25,555 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:25,556 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:25,557 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:25,560 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:25,560 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:25,560 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:25,561 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:25,562 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:25,563 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:25,563 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:25,565 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:25,565 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:25,565 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:25,566 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:25,566 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:25,567 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:25,567 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:25,568 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:25,591 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:25,591 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:25,594 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:25,594 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:25,594 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:25,594 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:25,594 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:25,596 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:25,596 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:25,596 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:25,596 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:25,597 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:25,597 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:25,597 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:25,597 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:25,597 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:25,597 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:25,600 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:25,600 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:25,600 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:25,600 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:25,600 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:25,602 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:25,602 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:25,602 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:25,602 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:25,602 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:25,603 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:25,605 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:25,605 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 -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2018-11-28 23:15:25,668 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:25,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:25,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:25,686 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:25,686 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:25,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-28 23:15:25,744 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a046d3b/a481886908024d07bb45cad685ac1b17/FLAG5d8973970 [2018-11-28 23:15:26,152 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:26,153 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-28 23:15:26,160 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a046d3b/a481886908024d07bb45cad685ac1b17/FLAG5d8973970 [2018-11-28 23:15:26,532 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23a046d3b/a481886908024d07bb45cad685ac1b17 [2018-11-28 23:15:26,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:26,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:26,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:26,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:26,547 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:26,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac9139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26, skipping insertion in model container [2018-11-28 23:15:26,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:26,583 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:26,793 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:26,797 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:26,820 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:26,841 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:26,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26 WrapperNode [2018-11-28 23:15:26,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:26,842 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:26,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:26,843 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:26,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,859 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:26,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:26,887 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:26,887 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:26,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (1/1) ... [2018-11-28 23:15:26,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:26,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:26,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:26,919 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:26,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (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 23:15:27,075 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:27,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:27,328 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:27,328 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2018-11-28 23:15:27,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:27 BoogieIcfgContainer [2018-11-28 23:15:27,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:27,330 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:27,330 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:27,334 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:27,335 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:27,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:26" (1/3) ... [2018-11-28 23:15:27,336 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60b8804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:27, skipping insertion in model container [2018-11-28 23:15:27,336 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:27,336 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:26" (2/3) ... [2018-11-28 23:15:27,337 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@60b8804 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:27, skipping insertion in model container [2018-11-28 23:15:27,337 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:27,337 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:27" (3/3) ... [2018-11-28 23:15:27,339 INFO L375 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c [2018-11-28 23:15:27,402 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:27,403 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:27,403 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:27,403 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:27,403 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:27,403 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:27,404 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:27,404 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:27,404 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:27,440 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:27,488 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:27,488 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:27,491 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:27,503 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:27,503 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:27,503 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:27,504 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:15:27,506 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-28 23:15:27,506 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:27,506 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:27,507 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:27,507 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:27,519 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2018-11-28 23:15:27,520 INFO L796 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume !(main_~x~0 > 0); 5#L27true assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 10#L27-2true [2018-11-28 23:15:27,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:15:27,531 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,606 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,647 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,647 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2018-11-28 23:15:27,647 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,648 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,665 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2018-11-28 23:15:27,665 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,820 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:27,821 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:27,822 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:27,823 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:27,824 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:27,824 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,824 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:27,824 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:27,825 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:27,825 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:27,825 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:27,851 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 23:15:27,893 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 23:15:27,908 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 23:15:27,925 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 23:15:27,930 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 23:15:28,152 WARN L180 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-28 23:15:28,362 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:28,362 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,369 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,369 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,394 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,394 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,403 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,404 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,426 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,426 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,432 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,432 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,458 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,458 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,462 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,462 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,467 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:28,467 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-1} Honda state: {ULTIMATE.start_main_#t~nondet4=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,494 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:28,494 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,520 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:28,520 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:28,565 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:28,566 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:28,567 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:28,567 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:28,567 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:28,567 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:28,567 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:28,568 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:28,568 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:28,568 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:28,568 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:28,568 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:28,570 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:28,607 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 23:15:28,612 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 23:15:28,616 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 23:15:28,641 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:28,868 WARN L180 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-28 23:15:29,154 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:29,161 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:29,164 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 23:15:29,167 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:29,168 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:29,168 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:29,168 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:29,174 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:29,177 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:29,197 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:29,198 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 23:15:29,198 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:29,199 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:29,201 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:29,201 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:29,201 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:29,204 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:29,204 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:29,206 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:29,214 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 23:15:29,215 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:29,215 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:29,215 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:29,215 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:29,220 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:29,221 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:29,242 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:29,247 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 23:15:29,248 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:29,248 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:29,248 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:29,249 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:29,250 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:29,251 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:29,251 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:29,265 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:29,265 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 23:15:29,267 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:29,267 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:29,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:29,271 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:29,271 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:29,272 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:29,272 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:29,277 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:29,282 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:29,282 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:29,284 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:29,285 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:29,285 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:29,286 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:29,287 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:29,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:29,393 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:29,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:29,410 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:29,436 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 23:15:29,451 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:29,453 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2018-11-28 23:15:29,570 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2018-11-28 23:15:29,571 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2018-11-28 23:15:29,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:29,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2018-11-28 23:15:29,575 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:15:29,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:29,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:15:29,576 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:29,576 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:15:29,577 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:29,578 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2018-11-28 23:15:29,582 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 23:15:29,586 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2018-11-28 23:15:29,588 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2018-11-28 23:15:29,588 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2018-11-28 23:15:29,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2018-11-28 23:15:29,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:29,590 INFO L705 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2018-11-28 23:15:29,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2018-11-28 23:15:29,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-11-28 23:15:29,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 23:15:29,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2018-11-28 23:15:29,624 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2018-11-28 23:15:29,624 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2018-11-28 23:15:29,624 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:29,624 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2018-11-28 23:15:29,625 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 23:15:29,626 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:29,626 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:29,626 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:29,626 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:29,626 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2018-11-28 23:15:29,627 INFO L796 eck$LassoCheckResult]: Loop: 94#L19 assume main_~x~0 > 0; 95#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 96#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2018-11-28 23:15:29,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:29,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:15:29,627 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:29,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:29,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:29,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,639 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:29,640 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2018-11-28 23:15:29,640 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:29,640 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:29,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:29,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,654 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2018-11-28 23:15:29,655 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:29,655 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:29,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:29,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:29,711 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:29,711 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:29,711 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:29,712 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:29,712 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:29,712 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:29,712 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:29,712 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:29,712 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:29,712 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:29,713 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:29,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:29,722 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 23:15:29,725 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 23:15:29,730 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 23:15:29,812 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 23:15:30,287 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:30,287 INFO L412 LassoAnalysis]: Checking for nontermination... 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) [2018-11-28 23:15:30,300 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:30,300 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:30,322 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:30,322 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 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 23:15:30,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:30,327 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:30,349 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:30,350 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:30,355 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:30,355 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:30,358 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:30,358 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=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 23:15:30,379 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:30,379 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:30,403 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:30,403 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:30,464 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:30,466 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:30,466 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:30,466 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:30,466 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:30,467 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:30,467 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:30,467 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:30,467 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:30,467 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:30,467 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:30,467 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:30,470 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 23:15:30,480 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 23:15:30,486 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 23:15:30,492 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 23:15:30,526 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 23:15:30,622 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:30,622 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:30,623 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 23:15:30,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:30,625 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:30,625 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:30,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:30,628 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:30,628 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:30,633 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:30,633 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 23:15:30,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:30,635 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:30,635 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:30,635 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:30,638 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:30,638 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:30,644 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:30,644 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 23:15:30,646 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:30,646 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:30,646 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:30,647 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:30,647 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:30,647 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:30,647 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:30,650 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:30,650 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 23:15:30,651 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:30,651 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:30,651 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:30,651 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:30,651 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:30,653 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:30,654 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:30,658 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:30,663 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:30,663 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:30,663 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:30,663 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:30,664 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:30,664 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:15:30,664 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:30,697 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:30,705 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:30,715 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:30,736 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 23:15:30,737 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:30,737 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-11-28 23:15:30,796 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 42 states and 70 transitions. Complement of second has 7 states. [2018-11-28 23:15:30,797 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 23:15:30,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:30,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:15:30,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2018-11-28 23:15:30,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:30,799 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:30,799 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:30,800 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2018-11-28 23:15:30,800 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:30,800 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2018-11-28 23:15:30,803 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 23:15:30,805 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2018-11-28 23:15:30,805 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2018-11-28 23:15:30,805 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:15:30,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2018-11-28 23:15:30,806 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:30,806 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2018-11-28 23:15:30,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2018-11-28 23:15:30,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2018-11-28 23:15:30,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2018-11-28 23:15:30,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2018-11-28 23:15:30,810 INFO L728 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2018-11-28 23:15:30,811 INFO L608 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2018-11-28 23:15:30,811 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:30,811 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2018-11-28 23:15:30,812 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2018-11-28 23:15:30,812 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:30,812 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:30,813 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:30,813 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:30,813 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2018-11-28 23:15:30,814 INFO L796 eck$LassoCheckResult]: Loop: 192#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 209#L19 assume !(main_~x~0 > 0); 208#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 192#L27-2 [2018-11-28 23:15:30,814 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:30,814 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2018-11-28 23:15:30,814 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:30,814 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:30,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,816 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:30,816 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:30,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:30,827 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2018-11-28 23:15:30,828 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:30,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:30,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:30,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:30,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:30,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2018-11-28 23:15:30,835 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:30,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:30,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,837 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:30,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:30,919 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:30,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:15:30,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:15:30,966 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:30,966 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:30,966 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:30,966 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:30,967 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:30,967 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:30,967 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:30,967 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:30,967 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:30,968 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:30,968 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:30,970 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 23:15:30,976 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 23:15:31,007 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 23:15:31,029 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 23:15:31,047 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 23:15:31,192 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:31,192 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:15:31,195 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:31,195 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:31,214 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:31,214 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:31,220 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:31,220 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:31,224 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:31,224 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-1} Honda state: {ULTIMATE.start_main_#t~nondet4=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:31,247 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:31,247 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:31,266 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:31,266 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 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 23:15:31,271 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:31,271 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:31,309 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:31,309 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:31,330 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:31,332 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:31,332 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:31,332 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:31,332 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:31,332 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:31,332 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:31,332 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:31,333 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:31,333 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:31,333 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:31,333 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:31,335 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 23:15:31,343 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 23:15:31,350 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 23:15:31,358 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:31,378 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 23:15:31,541 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-28 23:15:31,573 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:31,574 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:31,575 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 23:15:31,576 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,576 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:31,576 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,577 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,577 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,577 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:31,577 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:31,580 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,581 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 23:15:31,581 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,582 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:31,582 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,582 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:31,582 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,583 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:31,583 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:31,586 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,588 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 23:15:31,588 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,589 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,589 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,589 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,590 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:31,590 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:31,600 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:31,602 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 23:15:31,604 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:31,604 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:31,604 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:31,604 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:31,604 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:31,605 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:31,605 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:31,608 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:31,610 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:31,611 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:31,611 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:31,611 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:31,612 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:31,612 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:31,612 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:31,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:31,647 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:31,665 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 23:15:31,665 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:31,665 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2018-11-28 23:15:31,714 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 43 states and 69 transitions. Complement of second has 7 states. [2018-11-28 23:15:31,717 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 23:15:31,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:31,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 23:15:31,718 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:15:31,718 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 23:15:31,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,719 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-28 23:15:31,719 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:31,719 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2018-11-28 23:15:31,722 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-28 23:15:31,724 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2018-11-28 23:15:31,724 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2018-11-28 23:15:31,724 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2018-11-28 23:15:31,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2018-11-28 23:15:31,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:31,724 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2018-11-28 23:15:31,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2018-11-28 23:15:31,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2018-11-28 23:15:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2018-11-28 23:15:31,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2018-11-28 23:15:31,730 INFO L728 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2018-11-28 23:15:31,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:15:31,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:15:31,734 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2018-11-28 23:15:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:31,772 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2018-11-28 23:15:31,772 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:15:31,773 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2018-11-28 23:15:31,774 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2018-11-28 23:15:31,775 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2018-11-28 23:15:31,775 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2018-11-28 23:15:31,776 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2018-11-28 23:15:31,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2018-11-28 23:15:31,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:31,776 INFO L705 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2018-11-28 23:15:31,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2018-11-28 23:15:31,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2018-11-28 23:15:31,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-28 23:15:31,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2018-11-28 23:15:31,780 INFO L728 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2018-11-28 23:15:31,780 INFO L608 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2018-11-28 23:15:31,780 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:31,780 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2018-11-28 23:15:31,781 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:15:31,781 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:31,781 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:31,781 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-28 23:15:31,782 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:31,782 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2018-11-28 23:15:31,782 INFO L796 eck$LassoCheckResult]: Loop: 393#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 390#L19 assume main_~x~0 > 0; 391#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2018-11-28 23:15:31,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,782 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2018-11-28 23:15:31,782 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:31,782 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:31,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:31,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,791 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,791 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2018-11-28 23:15:31,791 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:31,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:31,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,793 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:31,793 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,798 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:31,798 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2018-11-28 23:15:31,798 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:31,798 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:31,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,799 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:31,799 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:31,884 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:31,884 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:31,884 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:31,884 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:31,884 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:31,884 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:31,884 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:31,884 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:31,884 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:31,885 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:31,885 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:31,888 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 23:15:31,891 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 23:15:31,898 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 23:15:31,906 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 23:15:31,909 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 23:15:31,970 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:31,970 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:15:31,978 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:31,979 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,001 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:32,002 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:32,007 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,007 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,011 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:32,012 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=5, ULTIMATE.start_main_#t~nondet3=5} Honda state: {ULTIMATE.start_main_~y~0=5, ULTIMATE.start_main_#t~nondet3=5} Generalized eigenvectors: [] Lambdas: [] Nus: [] 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 23:15:32,034 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,034 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:32,057 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:32,057 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,079 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:32,081 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:32,081 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:32,082 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:32,082 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:32,082 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:32,082 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,082 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:32,082 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:32,082 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration4_Loop [2018-11-28 23:15:32,082 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:32,082 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:32,083 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 23:15:32,096 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 23:15:32,098 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 23:15:32,105 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 23:15:32,108 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 23:15:32,207 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:32,207 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:32,207 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 23:15:32,209 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:32,209 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:32,209 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:32,209 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:32,209 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:32,210 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:32,210 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:32,214 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:32,214 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 23:15:32,215 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:32,215 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:32,215 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:32,215 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:32,216 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:32,217 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:32,220 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:32,221 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 23:15:32,221 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:32,221 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:32,222 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:32,222 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:32,222 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:32,222 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:32,223 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:32,225 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:32,227 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:32,228 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:32,228 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:32,228 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:32,228 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:32,228 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:32,229 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:32,305 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,320 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,326 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,346 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 23:15:32,347 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:32,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2018-11-28 23:15:32,367 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 35 states and 52 transitions. Complement of second has 6 states. [2018-11-28 23:15:32,368 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 23:15:32,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:32,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2018-11-28 23:15:32,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:15:32,370 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:32,370 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2018-11-28 23:15:32,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:32,371 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2018-11-28 23:15:32,371 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:32,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2018-11-28 23:15:32,373 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:15:32,373 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2018-11-28 23:15:32,373 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2018-11-28 23:15:32,374 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2018-11-28 23:15:32,374 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2018-11-28 23:15:32,374 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:32,374 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2018-11-28 23:15:32,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2018-11-28 23:15:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-11-28 23:15:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-11-28 23:15:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2018-11-28 23:15:32,378 INFO L728 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2018-11-28 23:15:32,378 INFO L608 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2018-11-28 23:15:32,378 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 23:15:32,378 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2018-11-28 23:15:32,379 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 23:15:32,379 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:32,379 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:32,380 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 23:15:32,380 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:32,380 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2018-11-28 23:15:32,380 INFO L796 eck$LassoCheckResult]: Loop: 502#L19 assume main_~x~0 > 0; 504#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 501#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2018-11-28 23:15:32,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,381 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2018-11-28 23:15:32,381 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,382 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:32,382 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,391 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2018-11-28 23:15:32,391 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,391 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,392 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:32,392 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,396 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2018-11-28 23:15:32,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:32,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:32,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,398 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:32,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:32,487 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:32,487 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:32,488 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:32,488 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:32,488 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:32,488 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,488 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:32,488 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:32,488 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:15:32,488 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:32,488 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:32,490 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 23:15:32,498 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 23:15:32,505 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 23:15:32,510 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 23:15:32,513 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 23:15:32,562 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:32,562 INFO L412 LassoAnalysis]: Checking for nontermination... 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) [2018-11-28 23:15:32,572 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,573 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,577 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:32,577 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=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 23:15:32,596 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:32,597 INFO L163 nArgumentSynthesizer]: Using integer mode. 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 23:15:32,620 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:32,620 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:32,674 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:32,675 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:32,676 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:32,676 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:32,676 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:32,676 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:32,676 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:32,676 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:32,676 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:32,676 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration5_Loop [2018-11-28 23:15:32,676 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:32,676 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:32,678 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 23:15:32,681 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 23:15:32,687 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 23:15:32,691 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 23:15:32,694 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 23:15:32,749 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:32,750 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:32,750 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 23:15:32,752 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:32,752 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:32,752 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:32,752 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:32,753 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:32,753 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:32,753 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:32,755 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:32,756 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 23:15:32,756 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:32,756 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:32,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:32,759 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:32,759 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:32,760 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:32,760 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:32,764 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:32,767 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:32,767 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:32,767 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:32,767 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:32,768 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:32,768 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2018-11-28 23:15:32,768 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:32,786 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,793 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,806 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,822 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 23:15:32,822 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:32,822 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2018-11-28 23:15:32,881 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2018-11-28 23:15:32,883 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 23:15:32,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:15:32,884 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:32,884 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:32,884 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:32,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,914 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,923 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 23:15:32,924 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:32,924 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2018-11-28 23:15:32,961 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2018-11-28 23:15:32,965 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 23:15:32,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2018-11-28 23:15:32,966 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:32,966 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:32,966 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:32,976 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,983 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:32,988 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,022 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 23:15:33,022 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:33,023 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2018-11-28 23:15:33,055 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 59 states and 92 transitions. Complement of second has 8 states. [2018-11-28 23:15:33,059 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 23:15:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 23:15:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2018-11-28 23:15:33,059 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2018-11-28 23:15:33,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2018-11-28 23:15:33,060 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,060 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2018-11-28 23:15:33,061 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,061 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2018-11-28 23:15:33,065 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:33,066 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2018-11-28 23:15:33,066 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2018-11-28 23:15:33,066 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2018-11-28 23:15:33,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2018-11-28 23:15:33,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:33,066 INFO L705 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2018-11-28 23:15:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2018-11-28 23:15:33,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2018-11-28 23:15:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 23:15:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2018-11-28 23:15:33,068 INFO L728 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-11-28 23:15:33,068 INFO L608 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2018-11-28 23:15:33,068 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 23:15:33,069 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2018-11-28 23:15:33,070 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:33,070 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:33,070 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:33,070 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2018-11-28 23:15:33,070 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:33,071 INFO L794 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2018-11-28 23:15:33,071 INFO L796 eck$LassoCheckResult]: Loop: 814#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 815#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 824#L19 assume !(main_~x~0 > 0); 814#L27 [2018-11-28 23:15:33,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,071 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2018-11-28 23:15:33,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:33,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:33,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:33,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,102 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2018-11-28 23:15:33,102 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:33,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,103 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:33,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,113 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2018-11-28 23:15:33,113 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:33,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:33,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:33,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:33,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:33,171 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:33,171 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:33,171 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:33,171 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:33,171 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:33,171 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:33,171 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:33,171 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:33,172 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:33,172 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:33,172 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:33,173 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 23:15:33,179 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:33,183 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 23:15:33,187 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 23:15:33,190 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 23:15:33,290 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:33,290 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:15:33,299 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:33,299 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:33,305 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:33,305 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=-1} Honda state: {ULTIMATE.start_main_#t~nondet4=-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 23:15:33,325 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:33,325 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:33,347 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:33,348 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 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 23:15:33,351 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:33,352 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:33,371 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:33,372 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 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 23:15:33,376 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:33,377 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:33,396 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:33,396 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} 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) [2018-11-28 23:15:33,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:33,410 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 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) [2018-11-28 23:15:33,451 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:33,451 INFO L163 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:33,525 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:33,527 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:33,527 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:33,527 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:33,527 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:33,527 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:33,528 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:33,528 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:33,528 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:33,528 INFO L131 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3_true-termination_true-no-overflow.c_Iteration6_Loop [2018-11-28 23:15:33,528 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:33,528 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:33,529 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 23:15:33,532 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 23:15:33,537 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 23:15:33,539 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 23:15:33,552 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 23:15:33,614 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:33,615 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:33,615 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 23:15:33,616 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,616 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:33,618 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,618 INFO L206 nArgumentSynthesizer]: 2 loop disjuncts [2018-11-28 23:15:33,618 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,619 INFO L402 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2018-11-28 23:15:33,619 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:33,624 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:33,624 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 23:15:33,624 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,625 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,625 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,625 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,626 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:33,626 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:33,634 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:33,634 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 23:15:33,635 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,635 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:33,635 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,635 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,635 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,636 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:33,639 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:33,640 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:33,640 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 23:15:33,641 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:33,641 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:33,641 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:33,641 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:33,641 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:33,646 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:33,646 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:33,650 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:33,652 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:33,652 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:33,653 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:33,653 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:33,653 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:33,653 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:33,656 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:33,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,688 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,698 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,704 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 23:15:33,705 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:33,705 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-28 23:15:33,736 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2018-11-28 23:15:33,738 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 23:15:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:33,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 23:15:33,739 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:15:33,739 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,739 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:33,754 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,780 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,802 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,827 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 23:15:33,827 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:33,827 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-28 23:15:33,849 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2018-11-28 23:15:33,852 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 23:15:33,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2018-11-28 23:15:33,852 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:15:33,853 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,853 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:33,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:33,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,871 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:33,877 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:33,891 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 23:15:33,891 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 23:15:33,891 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2018-11-28 23:15:33,925 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 4 states. [2018-11-28 23:15:33,927 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 23:15:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 23:15:33,928 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 23:15:33,929 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,929 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 23:15:33,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,930 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 23:15:33,930 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:33,931 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2018-11-28 23:15:33,931 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:33,932 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2018-11-28 23:15:33,932 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:33,932 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:33,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:33,932 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:33,932 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,932 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,932 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:33,933 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 23:15:33,933 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:33,933 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:33,933 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:33,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:33 BoogieIcfgContainer [2018-11-28 23:15:33,945 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:33,946 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:33,946 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:33,946 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:33,948 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:27" (3/4) ... [2018-11-28 23:15:33,952 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:33,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:33,955 INFO L168 Benchmark]: Toolchain (without parser) took 7417.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 202.9 MB). Free memory was 951.4 MB in the beginning and 1.0 GB in the end (delta: -75.3 MB). Peak memory consumption was 127.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,955 INFO L168 Benchmark]: CDTParser took 0.21 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 23:15:33,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.91 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,956 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.48 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,958 INFO L168 Benchmark]: Boogie Preprocessor took 31.20 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,958 INFO L168 Benchmark]: RCFGBuilder took 410.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,960 INFO L168 Benchmark]: BuchiAutomizer took 6615.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.0 MB). Peak memory consumption was 155.2 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:33,961 INFO L168 Benchmark]: Witness Printer took 7.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:33,971 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 301.91 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 44.48 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.20 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 410.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 121.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -160.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 6615.54 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 81.3 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 74.0 MB). Peak memory consumption was 155.2 MB. Max. memory is 11.5 GB. * Witness Printer took 7.97 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.5s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 5.1s. Construction of modules took 0.2s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 73 SDslu, 32 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 33ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.8s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...