./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-memory-alloca/b.04-alloca_true-termination_true-no-overflow.c.i --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-memory-alloca/b.04-alloca_true-termination_true-no-overflow.c.i -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 ccf04b55a9dc12e714cd9b0ac904f1f1cad109e6 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 23:19:39,464 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:19:39,466 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:19:39,478 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:19:39,478 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:19:39,480 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:19:39,481 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:19:39,483 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:19:39,485 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:19:39,486 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:19:39,487 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:19:39,488 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:19:39,489 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:19:39,490 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:19:39,491 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:19:39,492 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:19:39,493 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:19:39,496 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:19:39,498 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:19:39,500 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:19:39,501 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:19:39,502 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:19:39,505 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:19:39,505 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:19:39,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:19:39,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:19:39,508 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:19:39,509 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:19:39,510 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:19:39,512 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:19:39,518 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:19:39,519 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:19:39,519 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:19:39,519 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:19:39,521 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:19:39,521 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:19:39,524 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-28 23:19:39,552 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:19:39,553 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:19:39,554 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:19:39,556 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:19:39,556 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:19:39,557 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 23:19:39,557 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 23:19:39,558 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 23:19:39,558 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 23:19:39,558 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 23:19:39,558 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 23:19:39,559 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:19:39,559 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:19:39,559 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:19:39,559 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:19:39,560 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 23:19:39,560 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 23:19:39,560 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 23:19:39,561 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:19:39,561 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 23:19:39,561 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:19:39,561 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 23:19:39,561 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:19:39,561 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:19:39,562 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 23:19:39,564 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:19:39,564 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:19:39,565 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 23:19:39,566 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 23:19:39,566 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 -> ccf04b55a9dc12e714cd9b0ac904f1f1cad109e6 [2018-11-28 23:19:39,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:19:39,645 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:19:39,652 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:19:39,653 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:19:39,654 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:19:39,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-memory-alloca/b.04-alloca_true-termination_true-no-overflow.c.i [2018-11-28 23:19:39,716 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a65f86f6/b74b8845a8e5421fbbea90894a19e79d/FLAGfb9b4c5e1 [2018-11-28 23:19:40,342 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:19:40,344 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-memory-alloca/b.04-alloca_true-termination_true-no-overflow.c.i [2018-11-28 23:19:40,358 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a65f86f6/b74b8845a8e5421fbbea90894a19e79d/FLAGfb9b4c5e1 [2018-11-28 23:19:40,555 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4a65f86f6/b74b8845a8e5421fbbea90894a19e79d [2018-11-28 23:19:40,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:19:40,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:19:40,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:19:40,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:19:40,566 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:19:40,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:19:40" (1/1) ... [2018-11-28 23:19:40,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3926fb05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:40, skipping insertion in model container [2018-11-28 23:19:40,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:19:40" (1/1) ... [2018-11-28 23:19:40,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:19:40,644 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:19:41,014 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:19:41,033 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:19:41,103 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:19:41,159 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:19:41,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41 WrapperNode [2018-11-28 23:19:41,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:19:41,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:19:41,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:19:41,162 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:19:41,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,261 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:19:41,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:19:41,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:19:41,293 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:19:41,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,306 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (1/1) ... [2018-11-28 23:19:41,321 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:19:41,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:19:41,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:19:41,322 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:19:41,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (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 23:19:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-28 23:19:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-28 23:19:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-28 23:19:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-28 23:19:41,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:19:41,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:19:41,736 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:19:41,737 INFO L280 CfgBuilder]: Removed 7 assue(true) statements. [2018-11-28 23:19:41,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:19:41 BoogieIcfgContainer [2018-11-28 23:19:41,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:19:41,738 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 23:19:41,738 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 23:19:41,742 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 23:19:41,743 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:19:41,743 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:19:40" (1/3) ... [2018-11-28 23:19:41,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ffdb9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:19:41, skipping insertion in model container [2018-11-28 23:19:41,745 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:19:41,745 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:19:41" (2/3) ... [2018-11-28 23:19:41,745 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7ffdb9f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:19:41, skipping insertion in model container [2018-11-28 23:19:41,745 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 23:19:41,746 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:19:41" (3/3) ... [2018-11-28 23:19:41,747 INFO L375 chiAutomizerObserver]: Analyzing ICFG b.04-alloca_true-termination_true-no-overflow.c.i [2018-11-28 23:19:41,809 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:19:41,809 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 23:19:41,810 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 23:19:41,810 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 23:19:41,810 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:19:41,810 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:19:41,810 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 23:19:41,810 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:19:41,811 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 23:19:41,829 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:19:41,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:19:41,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:19:41,858 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:19:41,865 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:19:41,865 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:19:41,866 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 23:19:41,866 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-11-28 23:19:41,867 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-11-28 23:19:41,867 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 23:19:41,867 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 23:19:41,868 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-11-28 23:19:41,868 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-11-28 23:19:41,877 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0]; 3#L-1true havoc main_#res;havoc main_#t~nondet11, main_#t~nondet12, main_#t~nondet13, main_#t~ret14;test_fun_#in~x, test_fun_#in~y, test_fun_#in~tmp := main_#t~nondet11, main_#t~nondet12, main_#t~nondet13;havoc test_fun_#res;havoc test_fun_#t~malloc2.base, test_fun_#t~malloc2.offset, test_fun_#t~malloc3.base, test_fun_#t~malloc3.offset, test_fun_#t~malloc4.base, test_fun_#t~malloc4.offset, test_fun_#t~mem7, test_fun_#t~mem8, test_fun_#t~mem9, test_fun_#t~mem5, test_fun_#t~mem6, test_fun_#t~mem10, test_fun_~x, test_fun_~y, test_fun_~tmp, test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset, test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset, test_fun_~tmp_ref~0.base, test_fun_~tmp_ref~0.offset;test_fun_~x := test_fun_#in~x;test_fun_~y := test_fun_#in~y;test_fun_~tmp := test_fun_#in~tmp;call test_fun_#t~malloc2.base, test_fun_#t~malloc2.offset := #Ultimate.alloc(4);test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset := test_fun_#t~malloc2.base, test_fun_#t~malloc2.offset;call test_fun_#t~malloc3.base, test_fun_#t~malloc3.offset := #Ultimate.alloc(4);test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset := test_fun_#t~malloc3.base, test_fun_#t~malloc3.offset;call test_fun_#t~malloc4.base, test_fun_#t~malloc4.offset := #Ultimate.alloc(4);test_fun_~tmp_ref~0.base, test_fun_~tmp_ref~0.offset := test_fun_#t~malloc4.base, test_fun_#t~malloc4.offset;call write~int(test_fun_~x, test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset, 4);call write~int(test_fun_~y, test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset, 4);call write~int(test_fun_~tmp, test_fun_~tmp_ref~0.base, test_fun_~tmp_ref~0.offset, 4); 6#L555-3true [2018-11-28 23:19:41,877 INFO L796 eck$LassoCheckResult]: Loop: 6#L555-3true call test_fun_#t~mem5 := read~int(test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset, 4);call test_fun_#t~mem6 := read~int(test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset, 4); 11#L555-1true assume !!(test_fun_#t~mem5 > test_fun_#t~mem6);havoc test_fun_#t~mem5;havoc test_fun_#t~mem6;call test_fun_#t~mem7 := read~int(test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset, 4);call write~int(test_fun_#t~mem7, test_fun_~tmp_ref~0.base, test_fun_~tmp_ref~0.offset, 4);havoc test_fun_#t~mem7;call test_fun_#t~mem8 := read~int(test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset, 4);call write~int(test_fun_#t~mem8, test_fun_~x_ref~0.base, test_fun_~x_ref~0.offset, 4);havoc test_fun_#t~mem8;call test_fun_#t~mem9 := read~int(test_fun_~tmp_ref~0.base, test_fun_~tmp_ref~0.offset, 4);call write~int(test_fun_#t~mem9, test_fun_~y_ref~0.base, test_fun_~y_ref~0.offset, 4);havoc test_fun_#t~mem9; 6#L555-3true [2018-11-28 23:19:41,884 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:19:41,884 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-11-28 23:19:41,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:19:41,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:19:41,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:41,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:19:41,955 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:19:42,098 INFO L82 PathProgramCache]: Analyzing trace with hash 1190, now seen corresponding path program 1 times [2018-11-28 23:19:42,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:19:42,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:19:42,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:42,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:19:42,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:42,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:19:42,147 INFO L82 PathProgramCache]: Analyzing trace with hash 925672, now seen corresponding path program 1 times [2018-11-28 23:19:42,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:19:42,148 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:19:42,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:42,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:19:42,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:19:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:19:42,488 WARN L180 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 55 [2018-11-28 23:19:42,611 WARN L180 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2018-11-28 23:19:43,348 WARN L180 SmtUtils]: Spent 733.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 86 [2018-11-28 23:19:43,736 WARN L180 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2018-11-28 23:19:43,748 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 23:19:43,750 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 23:19:43,750 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 23:19:43,750 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 23:19:43,750 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 23:19:43,750 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 23:19:43,751 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 23:19:43,751 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 23:19:43,752 INFO L131 ssoRankerPreferences]: Filename of dumped script: b.04-alloca_true-termination_true-no-overflow.c.i_Iteration1_Lasso [2018-11-28 23:19:43,752 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 23:19:43,752 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 23:19:43,785 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:19:43,816 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 23:19:43,827 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 23:19:43,832 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 23:19:43,840 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 23:19:43,842 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:19:43,853 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 23:19:43,858 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 23:19:43,862 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 23:19:43,871 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 23:19:43,875 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:19:43,883 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 23:19:43,891 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 23:19:43,894 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 23:19:44,525 WARN L180 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2018-11-28 23:19:44,729 WARN L180 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2018-11-28 23:19:44,730 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 23:19:45,408 WARN L180 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2018-11-28 23:19:45,653 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 23:19:45,659 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 23:19:45,661 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 23:19:45,664 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,664 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,665 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,665 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,665 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,668 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,669 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,672 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,672 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 23:19:45,674 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,674 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,674 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,674 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,674 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,675 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,675 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,676 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,677 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 23:19:45,677 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,677 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,678 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,678 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,678 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,679 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,679 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,680 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,681 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 23:19:45,681 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,681 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,682 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,682 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,685 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,685 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,689 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,689 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 23:19:45,690 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,690 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,690 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,690 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,691 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,692 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,692 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,694 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,694 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 23:19:45,696 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,696 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,696 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,696 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,699 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,699 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,705 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,706 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 23:19:45,710 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,710 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,710 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,711 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,712 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,715 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,719 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,721 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 23:19:45,722 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,722 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,722 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,722 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,725 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,726 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,726 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,727 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,727 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 23:19:45,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,733 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,735 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,735 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,735 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,736 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,737 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,738 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,741 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 23:19:45,743 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,746 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,746 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,746 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,748 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,748 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,758 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,758 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 23:19:45,760 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,760 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,760 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,760 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,760 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,762 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,762 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,763 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,763 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 23:19:45,765 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,765 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 23:19:45,766 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,766 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,766 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,766 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 23:19:45,767 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 23:19:45,768 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,769 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 23:19:45,770 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,770 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,770 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,771 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,773 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,773 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,778 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 23:19:45,778 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 23:19:45,779 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 23:19:45,780 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 23:19:45,780 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 23:19:45,780 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 23:19:45,786 INFO L402 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2018-11-28 23:19:45,786 INFO L403 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2018-11-28 23:19:45,840 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 23:19:45,893 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 23:19:45,894 INFO L444 ModelExtractionUtils]: 37 out of 40 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 23:19:45,898 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 23:19:45,900 INFO L440 nArgumentSynthesizer]: Removed 2 redundant supporting invariants from a total of 2. [2018-11-28 23:19:45,900 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 23:19:45,901 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(v_rep(select (select #memory_int ULTIMATE.start_test_fun_~x_ref~0.base) ULTIMATE.start_test_fun_~x_ref~0.offset)_1, v_rep(select (select #memory_int ULTIMATE.start_test_fun_~y_ref~0.base) ULTIMATE.start_test_fun_~y_ref~0.offset)_1) = 1*v_rep(select (select #memory_int ULTIMATE.start_test_fun_~x_ref~0.base) ULTIMATE.start_test_fun_~x_ref~0.offset)_1 - 1*v_rep(select (select #memory_int ULTIMATE.start_test_fun_~y_ref~0.base) ULTIMATE.start_test_fun_~y_ref~0.offset)_1 Supporting invariants [] [2018-11-28 23:19:46,133 INFO L297 tatePredicateManager]: 24 out of 24 supporting invariants were superfluous and have been removed [2018-11-28 23:19:46,141 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 23:19:46,164 WARN L1298 BoogieBacktranslator]: unknown boogie variable #memory_int [2018-11-28 23:19:46,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:19:46,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:19:46,233 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:19:46,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:19:46,253 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:19:46,275 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 23:19:46,291 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 23:19:46,292 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2018-11-28 23:19:46,402 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 21 states and 23 transitions. Complement of second has 7 states. [2018-11-28 23:19:46,403 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 23:19:46,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 23:19:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 14 transitions. [2018-11-28 23:19:46,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 2 letters. [2018-11-28 23:19:46,408 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:19:46,408 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2018-11-28 23:19:46,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:19:46,409 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 14 transitions. Stem has 2 letters. Loop has 4 letters. [2018-11-28 23:19:46,409 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 23:19:46,411 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 23 transitions. [2018-11-28 23:19:46,413 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:19:46,416 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 0 states and 0 transitions. [2018-11-28 23:19:46,417 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 23:19:46,418 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 23:19:46,418 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 23:19:46,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 23:19:46,419 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:19:46,419 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:19:46,419 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:19:46,419 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 23:19:46,419 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:19:46,420 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 23:19:46,421 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 23:19:46,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:19:46 BoogieIcfgContainer [2018-11-28 23:19:46,428 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 23:19:46,428 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:19:46,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:19:46,429 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:19:46,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:19:41" (3/4) ... [2018-11-28 23:19:46,434 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 23:19:46,434 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:19:46,435 INFO L168 Benchmark]: Toolchain (without parser) took 5875.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.5 MB). Free memory was 946.0 MB in the beginning and 1.2 GB in the end (delta: -228.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:19:46,436 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:19:46,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 599.38 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:19:46,438 INFO L168 Benchmark]: Boogie Procedure Inliner took 131.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-28 23:19:46,439 INFO L168 Benchmark]: Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:19:46,440 INFO L168 Benchmark]: RCFGBuilder took 415.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:19:46,441 INFO L168 Benchmark]: BuchiAutomizer took 4689.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:19:46,442 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:19:46,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 599.38 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 924.5 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 131.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 924.5 MB in the beginning and 1.1 GB in the end (delta: -197.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.66 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 415.83 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 4689.86 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 71.8 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -78.5 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 5.79 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function unknown-#memory_int-unknown[x_ref][x_ref] + -1 * unknown-#memory_int-unknown[y_ref][y_ref] and consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.6s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 4.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 5 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso1 LassoPreprocessingBenchmarks: Lassos: inital406 mio100 ax104 hnf100 lsp94 ukn44 mio100 lsp39 div100 bol100 ite100 ukn100 eq195 hnf87 smp100 dnf100 smp100 tf100 neg100 sie100 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 8ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...