./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_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/PodelskiRybalchenko-TACAS2011-Fig2_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 ff3652fa62b489d4e6a4a85c8349c06d13bd2232 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 23:15:22,337 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:15:22,339 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:15:22,352 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:15:22,353 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:15:22,354 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:15:22,356 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:15:22,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:15:22,360 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:15:22,361 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:15:22,362 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:15:22,363 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:15:22,364 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:15:22,365 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:15:22,367 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:15:22,368 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:15:22,369 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:15:22,371 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:15:22,373 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:15:22,376 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:15:22,378 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:15:22,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:15:22,382 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:15:22,383 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:15:22,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:15:22,384 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:15:22,386 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:15:22,387 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:15:22,388 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:15:22,389 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:15:22,389 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:15:22,390 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:15:22,390 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:15:22,391 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:15:22,392 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:15:22,394 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:15:22,394 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:15:22,411 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:15:22,412 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:15:22,415 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:15:22,415 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:15:22,415 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:15:22,415 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:15:22,415 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:15:22,416 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:15:22,416 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:15:22,416 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:15:22,416 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:15:22,416 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:15:22,416 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:15:22,417 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:15:22,418 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:15:22,421 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:15:22,421 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:15:22,421 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:15:22,421 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:15:22,422 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:15:22,422 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:15:22,422 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:15:22,422 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:15:22,426 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:15:22,429 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 -> ff3652fa62b489d4e6a4a85c8349c06d13bd2232 [2018-11-28 23:15:22,494 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:15:22,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:15:22,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:15:22,523 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:15:22,524 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:15:22,525 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-28 23:15:22,595 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89d9f125/1e9be3f7e4c64e5391e66ea7335d4354/FLAG546aebd6d [2018-11-28 23:15:23,081 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:15:23,082 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-28 23:15:23,088 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89d9f125/1e9be3f7e4c64e5391e66ea7335d4354/FLAG546aebd6d [2018-11-28 23:15:23,442 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e89d9f125/1e9be3f7e4c64e5391e66ea7335d4354 [2018-11-28 23:15:23,446 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:15:23,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:15:23,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:23,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:15:23,454 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:15:23,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1074d184 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23, skipping insertion in model container [2018-11-28 23:15:23,461 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:15:23,491 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:15:23,738 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:23,746 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:15:23,768 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:15:23,785 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:15:23,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23 WrapperNode [2018-11-28 23:15:23,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:15:23,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:23,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:15:23,787 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:15:23,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,803 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:15:23,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:15:23,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:15:23,832 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:15:23,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (1/1) ... [2018-11-28 23:15:23,858 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:15:23,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:15:23,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:15:23,859 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:15:23,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (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 23:15:24,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:15:24,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:15:24,177 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:15:24,177 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2018-11-28 23:15:24,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:24 BoogieIcfgContainer [2018-11-28 23:15:24,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:15:24,178 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:15:24,179 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:15:24,182 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:15:24,183 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:24,184 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:15:23" (1/3) ... [2018-11-28 23:15:24,185 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@716f2dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:24, skipping insertion in model container [2018-11-28 23:15:24,185 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:24,185 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:15:23" (2/3) ... [2018-11-28 23:15:24,185 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@716f2dab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:15:24, skipping insertion in model container [2018-11-28 23:15:24,186 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:15:24,186 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:24" (3/3) ... [2018-11-28 23:15:24,187 INFO L375 chiAutomizerObserver]: Analyzing ICFG PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c [2018-11-28 23:15:24,247 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:15:24,248 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:15:24,248 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:15:24,248 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:15:24,248 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:15:24,248 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:15:24,248 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:15:24,249 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:15:24,249 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:15:24,264 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:24,285 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:24,286 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:24,286 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:24,292 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:24,292 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:24,292 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:15:24,292 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2018-11-28 23:15:24,294 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 23:15:24,294 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:24,294 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:24,294 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2018-11-28 23:15:24,295 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 23:15:24,304 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 3#L17-2true [2018-11-28 23:15:24,304 INFO L796 eck$LassoCheckResult]: Loop: 3#L17-2true assume !!(main_~x~0 >= 0);main_~y~0 := 1; 6#L19-2true assume !(main_~y~0 < main_~x~0); 5#L19-3true main_~x~0 := main_~x~0 - 1; 3#L17-2true [2018-11-28 23:15:24,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,311 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2018-11-28 23:15:24,314 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,315 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:24,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,426 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,427 INFO L82 PathProgramCache]: Analyzing trace with hash 39951, now seen corresponding path program 1 times [2018-11-28 23:15:24,427 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,427 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:24,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:24,443 INFO L82 PathProgramCache]: Analyzing trace with hash 963472, now seen corresponding path program 1 times [2018-11-28 23:15:24,443 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:24,443 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:24,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:24,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:24,614 WARN L180 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:24,681 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:24,682 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:24,682 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:24,682 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:24,683 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:24,683 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:24,684 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:24,684 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:24,684 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:24,684 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:24,684 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:24,710 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 23:15:24,743 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 23:15:24,757 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 23:15:24,953 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:24,953 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 23:15:24,967 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:24,967 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:25,000 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:25,000 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 23:15:25,007 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:25,007 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:25,026 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:25,027 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 23:15:25,035 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:25,035 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:25,064 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:25,064 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:25,094 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:25,096 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:25,096 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:25,096 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:25,096 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:25,096 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:25,096 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:25,097 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:25,097 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:25,097 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration1_Loop [2018-11-28 23:15:25,097 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:25,097 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:25,099 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:25,210 WARN L180 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-11-28 23:15:25,211 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 23:15:25,246 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:25,444 WARN L180 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-28 23:15:25,563 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:25,569 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:25,572 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 23:15:25,573 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:25,574 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:25,575 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:25,575 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:25,576 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:25,579 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:25,579 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:25,591 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:25,600 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:15:25,600 INFO L444 ModelExtractionUtils]: 1 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:15:25,603 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:25,603 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:25,604 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:25,605 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 2*ULTIMATE.start_main_~x~0 + 1 Supporting invariants [] [2018-11-28 23:15:25,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:25,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:25,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:25,786 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:25,798 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:25,910 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 23:15:25,926 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 23:15:25,928 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2018-11-28 23:15:25,990 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 23 states and 35 transitions. Complement of second has 7 states. [2018-11-28 23:15:25,991 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 23:15:25,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:15:25,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 21 transitions. [2018-11-28 23:15:25,995 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 3 letters. [2018-11-28 23:15:25,997 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:25,997 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 4 letters. Loop has 3 letters. [2018-11-28 23:15:25,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:25,998 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 21 transitions. Stem has 1 letters. Loop has 6 letters. [2018-11-28 23:15:25,998 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:26,000 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 35 transitions. [2018-11-28 23:15:26,003 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:26,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 7 states and 10 transitions. [2018-11-28 23:15:26,009 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 23:15:26,010 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 4 [2018-11-28 23:15:26,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 10 transitions. [2018-11-28 23:15:26,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:26,011 INFO L705 BuchiCegarLoop]: Abstraction has 7 states and 10 transitions. [2018-11-28 23:15:26,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states and 10 transitions. [2018-11-28 23:15:26,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6. [2018-11-28 23:15:26,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:26,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 9 transitions. [2018-11-28 23:15:26,040 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-28 23:15:26,040 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 9 transitions. [2018-11-28 23:15:26,040 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:15:26,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 9 transitions. [2018-11-28 23:15:26,042 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:26,042 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:26,042 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:26,042 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:15:26,042 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:26,043 INFO L794 eck$LassoCheckResult]: Stem: 74#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 70#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 72#L19-2 [2018-11-28 23:15:26,043 INFO L796 eck$LassoCheckResult]: Loop: 72#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 72#L19-2 [2018-11-28 23:15:26,043 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:26,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2018-11-28 23:15:26,043 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:26,043 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:26,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:26,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:26,056 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 1 times [2018-11-28 23:15:26,056 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:26,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:26,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:26,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,063 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:26,063 INFO L82 PathProgramCache]: Analyzing trace with hash 31081, now seen corresponding path program 1 times [2018-11-28 23:15:26,064 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:26,064 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:26,065 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,066 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:26,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:26,100 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:26,100 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:26,100 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:26,100 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:26,101 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:26,101 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,101 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:26,101 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:26,101 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:26,102 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:26,102 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:26,104 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 23:15:26,108 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 23:15:26,122 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:26,194 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:26,195 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,200 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:26,201 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:26,220 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:26,220 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:26,225 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,248 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:26,248 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:26,369 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:26,371 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:26,371 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:26,371 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:26,371 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:26,372 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:26,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:26,372 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:26,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:26,372 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration2_Loop [2018-11-28 23:15:26,372 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:26,372 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:26,375 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 23:15:26,382 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 23:15:26,391 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 23:15:26,582 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:26,582 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:26,583 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 23:15:26,583 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,585 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,586 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,586 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:26,591 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:26,591 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:26,601 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:26,602 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 23:15:26,603 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:26,603 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:26,603 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:26,603 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:26,603 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:26,606 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:26,607 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:26,617 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:26,634 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:26,638 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:26,638 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:26,639 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:26,639 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:26,639 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:26,643 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:26,931 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:26,954 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:26,978 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:26,979 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 23:15:26,979 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:26,980 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5 Second operand 2 states. [2018-11-28 23:15:27,008 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 9 transitions. cyclomatic complexity: 5. Second operand 2 states. Result 13 states and 18 transitions. Complement of second has 5 states. [2018-11-28 23:15:27,009 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 23:15:27,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:27,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:27,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 1 letters. [2018-11-28 23:15:27,010 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,010 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2018-11-28 23:15:27,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,011 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:15:27,011 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,011 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 13 states and 18 transitions. [2018-11-28 23:15:27,012 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:27,013 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 13 states to 9 states and 13 transitions. [2018-11-28 23:15:27,013 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2018-11-28 23:15:27,013 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2018-11-28 23:15:27,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 13 transitions. [2018-11-28 23:15:27,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 23:15:27,014 INFO L705 BuchiCegarLoop]: Abstraction has 9 states and 13 transitions. [2018-11-28 23:15:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 13 transitions. [2018-11-28 23:15:27,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 6. [2018-11-28 23:15:27,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2018-11-28 23:15:27,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 8 transitions. [2018-11-28 23:15:27,015 INFO L728 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:27,015 INFO L608 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2018-11-28 23:15:27,016 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 23:15:27,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 6 states and 8 transitions. [2018-11-28 23:15:27,016 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2018-11-28 23:15:27,016 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:15:27,016 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:15:27,018 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2018-11-28 23:15:27,018 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2018-11-28 23:15:27,018 INFO L794 eck$LassoCheckResult]: Stem: 122#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 118#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 119#L19-2 assume !(main_~y~0 < main_~x~0); 123#L19-3 main_~x~0 := main_~x~0 - 1; 120#L17-2 assume !!(main_~x~0 >= 0);main_~y~0 := 1; 121#L19-2 [2018-11-28 23:15:27,018 INFO L796 eck$LassoCheckResult]: Loop: 121#L19-2 assume !!(main_~y~0 < main_~x~0);main_~y~0 := 1 + main_~y~0; 121#L19-2 [2018-11-28 23:15:27,019 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 29867642, now seen corresponding path program 2 times [2018-11-28 23:15:27,019 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,019 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash 50, now seen corresponding path program 2 times [2018-11-28 23:15:27,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,035 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:27,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:15:27,042 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,042 INFO L82 PathProgramCache]: Analyzing trace with hash 925896921, now seen corresponding path program 1 times [2018-11-28 23:15:27,042 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:15:27,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:15:27,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,044 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:15:27,044 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:15:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,132 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:27,134 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:15:27,134 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:15:27,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:15:27,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,240 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:15:27,259 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:15:27,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 23:15:27,271 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:27,271 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:27,272 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:27,272 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:27,272 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 23:15:27,272 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,273 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:27,273 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:27,273 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:27,273 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:27,273 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:27,275 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 23:15:27,279 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 23:15:27,284 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 23:15:27,380 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:27,381 INFO L412 LassoAnalysis]: Checking for nontermination... 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 23:15:27,384 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:27,385 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:27,405 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:27,405 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 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 23:15:27,410 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:27,410 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:27,431 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 23:15:27,431 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_5=0} Honda state: {v_rep~unnamed0~0~false_5=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:15:27,438 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 23:15:27,438 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,463 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 23:15:27,463 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 23:15:27,599 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 23:15:27,600 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:15:27,601 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:15:27,601 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:15:27,601 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:15:27,601 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:15:27,601 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:15:27,601 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:15:27,601 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:15:27,602 INFO L131 ssoRankerPreferences]: Filename of dumped script: PodelskiRybalchenko-TACAS2011-Fig2_true-termination_true-no-overflow.c_Iteration3_Loop [2018-11-28 23:15:27,602 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:15:27,602 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:15:27,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,619 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:15:27,623 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 23:15:27,731 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:15:27,732 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:15:27,732 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 23:15:27,734 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:27,734 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:27,734 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:27,734 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:27,736 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:27,736 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:27,746 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:27,748 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 23:15:27,749 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:27,749 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:27,750 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:27,750 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:27,752 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:15:27,752 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:15:27,755 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:15:27,756 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 23:15:27,756 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:15:27,757 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:15:27,757 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:15:27,757 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:15:27,758 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:15:27,758 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:15:27,758 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:15:27,764 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:15:27,772 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2018-11-28 23:15:27,775 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. [2018-11-28 23:15:27,776 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:15:27,776 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 23:15:27,776 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:15:27,776 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2018-11-28 23:15:27,777 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 23:15:27,811 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,817 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,832 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 23:15:27,832 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:27,832 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:27,854 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2018-11-28 23:15:27,856 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 23:15:27,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:27,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:27,856 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 23:15:27,857 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,857 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:27,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,912 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:27,927 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:27,927 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 23:15:27,927 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:27,927 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:27,945 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 11 states and 15 transitions. Complement of second has 5 states. [2018-11-28 23:15:27,946 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 23:15:27,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:27,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 5 transitions. [2018-11-28 23:15:27,947 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 5 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 23:15:27,948 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:27,948 INFO L642 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2018-11-28 23:15:28,016 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:15:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,038 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:15:28,047 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:15:28,047 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 23:15:28,048 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 23:15:28,048 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4 Second operand 2 states. [2018-11-28 23:15:28,070 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 6 states and 8 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 9 states and 11 transitions. Complement of second has 4 states. [2018-11-28 23:15:28,071 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 23:15:28,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-28 23:15:28,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2018-11-28 23:15:28,072 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 1 letters. [2018-11-28 23:15:28,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 1 letters. [2018-11-28 23:15:28,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,073 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 5 letters. Loop has 2 letters. [2018-11-28 23:15:28,073 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:15:28,073 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 9 states and 11 transitions. [2018-11-28 23:15:28,074 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:28,074 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 9 states to 0 states and 0 transitions. [2018-11-28 23:15:28,074 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:28,074 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:28,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:28,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:28,077 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:28,077 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:28,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:15:28,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:15:28,083 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 7 states. [2018-11-28 23:15:28,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:15:28,087 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 23:15:28,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 23:15:28,088 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 23:15:28,088 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:28,089 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:15:28,089 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:15:28,089 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:15:28,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:15:28,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:15:28,089 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:28,089 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:28,089 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:15:28,090 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 23:15:28,092 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:15:28,092 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:15:28,092 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:15:28,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:15:28 BoogieIcfgContainer [2018-11-28 23:15:28,101 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:15:28,102 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:15:28,102 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:15:28,102 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:15:28,104 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:15:24" (3/4) ... [2018-11-28 23:15:28,108 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:15:28,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:15:28,109 INFO L168 Benchmark]: Toolchain (without parser) took 4662.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 954.0 MB in the beginning and 906.5 MB in the end (delta: 47.5 MB). Peak memory consumption was 167.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:28,111 INFO L168 Benchmark]: CDTParser took 0.16 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 23:15:28,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:28,113 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.52 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:28,113 INFO L168 Benchmark]: Boogie Preprocessor took 26.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:28,114 INFO L168 Benchmark]: RCFGBuilder took 319.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:28,116 INFO L168 Benchmark]: BuchiAutomizer took 3922.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 906.5 MB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:15:28,117 INFO L168 Benchmark]: Witness Printer took 6.77 ms. Allocated memory is still 1.1 GB. Free memory is still 906.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:15:28,122 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 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 338.11 ms. Allocated memory is still 1.0 GB. Free memory was 954.0 MB in the beginning and 942.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 44.52 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.00 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 319.54 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -162.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 3922.94 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 906.5 MB in the end (delta: 197.7 MB). Peak memory consumption was 197.7 MB. Max. memory is 11.5 GB. * Witness Printer took 6.77 ms. Allocated memory is still 1.1 GB. Free memory is still 906.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 4 terminating modules (1 trivial, 2 deterministic, 1 nondeterministic). One deterministic module has affine ranking function 2 * x + 1 and consists of 5 locations. One deterministic module has affine ranking function -1 * y + x and consists of 3 locations. One nondeterministic module has affine ranking function -1 * y + x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 7 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 3.8s and 4 iterations. TraceHistogramMax:2. Analysis of lassos took 2.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 2. Automata minimization 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 6 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 1, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 15 SDtfs, 21 SDslu, 6 SDs, 0 SdLazy, 39 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT2 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital12 mio100 ax203 hnf98 lsp49 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf111 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 19ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 3 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...